linux/generic: Add support for 3.0-rc3

Also make linux identify itself properly as 3.0, not 3.0.0.

Signed-off-by: Jonas Gorski <jonas.gorski+openwrt@gmail.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27191 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/generic/config-3.0 b/target/linux/generic/config-3.0
new file mode 100644 (file)
index 0000000..d0a40a1
--- /dev/null
+++ b/target/linux/generic/config-3.0
@@ -0,0 +1,3156 @@
+CONFIG_32BIT=y
+# CONFIG_6PACK is not set
+# CONFIG_8139CP is not set
+# CONFIG_8139TOO is not set
+# CONFIG_9P_FS is not set
+# CONFIG_AB3100_CORE is not set
+# CONFIG_AB8500_CORE is not set
+# CONFIG_ABX500_CORE is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_ACENIC is not set
+# CONFIG_ACORN_PARTITION is not set
+# CONFIG_ACPI_APEI is not set
+# CONFIG_ACPI_HED is not set
+# CONFIG_ACPI_POWER_METER is not set
+# CONFIG_AD525X_DPOT is not set
+# CONFIG_ADAPTEC_STARFIRE is not set
+# CONFIG_ADFS_FS is not set
+# CONFIG_ADIS16255 is not set
+# CONFIG_ADM6996_PHY is not set
+# CONFIG_ADM8211 is not set
+CONFIG_AEABI=y
+# CONFIG_AFFS_FS is not set
+# CONFIG_AFS_FS is not set
+# CONFIG_AF_RXRPC is not set
+# CONFIG_AGP is not set
+CONFIG_AIO=y
+# CONFIG_AIRO is not set
+# CONFIG_AIRO_CS is not set
+# CONFIG_ALCHEMY_GPIO_INDIRECT is not set
+# CONFIG_ALIM7101_WDT is not set
+# CONFIG_ALTERA_STAPL is not set
+# CONFIG_AMD8111_ETH is not set
+# CONFIG_AMIGA_PARTITION is not set
+CONFIG_ANON_INODES=y
+# CONFIG_APDS9802ALS is not set
+# CONFIG_APPLICOM is not set
+# CONFIG_AR7 is not set
+# CONFIG_AR8216_PHY is not set
+# CONFIG_AR9170_USB is not set
+# CONFIG_ARCH_AAEC2000 is not set
+# CONFIG_ARCH_AT91 is not set
+# CONFIG_ARCH_BCMRING is not set
+# CONFIG_ARCH_CLPS711X is not set
+# CONFIG_ARCH_CNS3XXX is not set
+# CONFIG_ARCH_DAVINCI is not set
+# CONFIG_ARCH_DOVE is not set
+# CONFIG_ARCH_EBSA110 is not set
+# CONFIG_ARCH_EP93XX is not set
+CONFIG_ARCH_FLATMEM_ENABLE=y
+# CONFIG_ARCH_FOOTBRIDGE is not set
+# CONFIG_ARCH_GEMINI is not set
+# CONFIG_ARCH_H720X is not set
+# CONFIG_ARCH_INTEGRATOR is not set
+# CONFIG_ARCH_IOP13XX is not set
+# CONFIG_ARCH_IOP32X is not set
+# CONFIG_ARCH_IOP33X is not set
+# CONFIG_ARCH_IXP2000 is not set
+# CONFIG_ARCH_IXP23XX is not set
+# CONFIG_ARCH_IXP4XX is not set
+# CONFIG_ARCH_KIRKWOOD is not set
+# CONFIG_ARCH_KS8695 is not set
+# CONFIG_ARCH_LH7A40X is not set
+# CONFIG_ARCH_LOKI is not set
+# CONFIG_ARCH_LPC32XX is not set
+# CONFIG_ARCH_MMP is not set
+# CONFIG_ARCH_MSM is not set
+# CONFIG_ARCH_MV78XX0 is not set
+# CONFIG_ARCH_MXC is not set
+# CONFIG_ARCH_MXS is not set
+# CONFIG_ARCH_NETX is not set
+# CONFIG_ARCH_NOMADIK is not set
+# CONFIG_ARCH_NS9XXX is not set
+# CONFIG_ARCH_NUC93X is not set
+# CONFIG_ARCH_OMAP is not set
+# CONFIG_ARCH_ORION5X is not set
+# CONFIG_ARCH_PNX4008 is not set
+# CONFIG_ARCH_PXA is not set
+# CONFIG_ARCH_REALVIEW is not set
+# CONFIG_ARCH_RPC is not set
+# CONFIG_ARCH_S3C2410 is not set
+# CONFIG_ARCH_S3C64XX is not set
+# CONFIG_ARCH_S5P6440 is not set
+# CONFIG_ARCH_S5P6442 is not set
+# CONFIG_ARCH_S5P64X0 is not set
+# CONFIG_ARCH_S5PC100 is not set
+# CONFIG_ARCH_S5PV210 is not set
+# CONFIG_ARCH_S5PV310 is not set
+# CONFIG_ARCH_SA1100 is not set
+# CONFIG_ARCH_SHARK is not set
+# CONFIG_ARCH_SHMOBILE is not set
+# CONFIG_ARCH_STMP3XXX is not set
+# CONFIG_ARCH_TCC_926 is not set
+# CONFIG_ARCH_TEGRA is not set
+# CONFIG_ARCH_U300 is not set
+# CONFIG_ARCH_U8500 is not set
+# CONFIG_ARCH_VERSATILE is not set
+# CONFIG_ARCH_VEXPRESS is not set
+# CONFIG_ARCH_W90X900 is not set
+# CONFIG_ARCNET is not set
+CONFIG_ARM_DMA_MEM_BUFFERABLE=y
+# CONFIG_ARM_ERRATA_411920 is not set
+# CONFIG_ARM_UNWIND is not set
+CONFIG_ARPD=y
+# CONFIG_ARTHUR is not set
+CONFIG_ASK_IP_FIB_HASH=y
+# CONFIG_ASUS_OLED is not set
+# CONFIG_ASYNC_RAID6_TEST is not set
+# CONFIG_ASYNC_TX_DMA is not set
+# CONFIG_AT76C50X_USB is not set
+# CONFIG_ATA is not set
+# CONFIG_ATALK is not set
+# CONFIG_ATARI_PARTITION is not set
+# CONFIG_ATA_ACPI is not set
+CONFIG_ATA_BMDMA=y
+# CONFIG_ATA_GENERIC is not set
+# CONFIG_ATA_NONSTANDARD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_ATA_PIIX is not set
+CONFIG_ATA_SFF=y
+# CONFIG_ATA_VERBOSE_ERROR is not set
+# CONFIG_ATH5K is not set
+# CONFIG_ATH6K_LEGACY is not set
+# CONFIG_ATH9K is not set
+# CONFIG_ATL1 is not set
+# CONFIG_ATL1C is not set
+# CONFIG_ATL1E is not set
+# CONFIG_ATL2 is not set
+# CONFIG_ATM is not set
+# CONFIG_ATMEL is not set
+# CONFIG_ATM_AMBASSADOR is not set
+# CONFIG_ATM_BR2684 is not set
+CONFIG_ATM_BR2684_IPFILTER=y
+# CONFIG_ATM_CLIP is not set
+CONFIG_ATM_CLIP_NO_ICMP=y
+# CONFIG_ATM_DRIVERS is not set
+# CONFIG_ATM_DUMMY is not set
+# CONFIG_ATM_ENI is not set
+# CONFIG_ATM_FIRESTREAM is not set
+# CONFIG_ATM_FORE200E is not set
+# CONFIG_ATM_HE is not set
+# CONFIG_ATM_HORIZON is not set
+# CONFIG_ATM_IA is not set
+# CONFIG_ATM_IDT77252 is not set
+# CONFIG_ATM_LANAI is not set
+# CONFIG_ATM_LANE is not set
+# CONFIG_ATM_MPOA is not set
+# CONFIG_ATM_NICSTAR is not set
+# CONFIG_ATM_SOLOS is not set
+# CONFIG_ATM_TCP is not set
+# CONFIG_ATM_ZATM is not set
+# CONFIG_ATOMIC64_SELFTEST is not set
+# CONFIG_AUDIT is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTO_ZRELADDR is not set
+# CONFIG_AUXDISPLAY is not set
+# CONFIG_AVERAGE is not set
+# CONFIG_AX25 is not set
+# CONFIG_AX25_DAMA_SLAVE is not set
+# CONFIG_AX88796 is not set
+# CONFIG_B43 is not set
+# CONFIG_B43LEGACY is not set
+# CONFIG_B44 is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+CONFIG_BASE_FULL=y
+CONFIG_BASE_SMALL=0
+# CONFIG_BATMAN_ADV is not set
+# CONFIG_BATTERY_BQ27x00 is not set
+# CONFIG_BATTERY_DS2760 is not set
+# CONFIG_BATTERY_DS2782 is not set
+# CONFIG_BATTERY_MAX17040 is not set
+# CONFIG_BATTERY_MAX17042 is not set
+# CONFIG_BAYCOM_EPP is not set
+# CONFIG_BAYCOM_PAR is not set
+# CONFIG_BAYCOM_SER_FDX is not set
+# CONFIG_BAYCOM_SER_HDX is not set
+# CONFIG_BCM47XX is not set
+# CONFIG_BCM63XX is not set
+# CONFIG_BCM63XX_PHY is not set
+# CONFIG_BCMA is not set
+# CONFIG_BCM_WIMAX is not set
+# CONFIG_BDI_SWITCH is not set
+# CONFIG_BE2ISCSI is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_BINARY_PRINTF is not set
+# CONFIG_BINFMT_AOUT is not set
+CONFIG_BINFMT_ELF=y
+# CONFIG_BINFMT_MISC is not set
+CONFIG_BITREVERSE=y
+CONFIG_BKL=y
+# CONFIG_BLK_CPQ_CISS_DA is not set
+# CONFIG_BLK_CPQ_DA is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_3W_XXXX_RAID is not set
+# CONFIG_BLK_DEV_4DRIVES is not set
+# CONFIG_BLK_DEV_AEC62XX is not set
+# CONFIG_BLK_DEV_ALI14XX is not set
+# CONFIG_BLK_DEV_ALI15X3 is not set
+# CONFIG_BLK_DEV_AMD74XX is not set
+# CONFIG_BLK_DEV_ATIIXP is not set
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_BLK_DEV_CMD640 is not set
+# CONFIG_BLK_DEV_CMD64X is not set
+# CONFIG_BLK_DEV_COW_COMMON is not set
+# CONFIG_BLK_DEV_CRYPTOLOOP is not set
+# CONFIG_BLK_DEV_CS5520 is not set
+# CONFIG_BLK_DEV_CS5530 is not set
+# CONFIG_BLK_DEV_CS5535 is not set
+# CONFIG_BLK_DEV_CS5536 is not set
+# CONFIG_BLK_DEV_CY82C693 is not set
+# CONFIG_BLK_DEV_DAC960 is not set
+# CONFIG_BLK_DEV_DELKIN is not set
+# CONFIG_BLK_DEV_DRBD is not set
+# CONFIG_BLK_DEV_DTC2278 is not set
+# CONFIG_BLK_DEV_FD is not set
+# CONFIG_BLK_DEV_GENERIC is not set
+# CONFIG_BLK_DEV_HD is not set
+# CONFIG_BLK_DEV_HPT366 is not set
+# CONFIG_BLK_DEV_HT6560B is not set
+# CONFIG_BLK_DEV_IDEACPI is not set
+# CONFIG_BLK_DEV_IDECD is not set
+# CONFIG_BLK_DEV_IDECS is not set
+# CONFIG_BLK_DEV_IDEPCI is not set
+# CONFIG_BLK_DEV_IDEPNP is not set
+# CONFIG_BLK_DEV_IDETAPE is not set
+# CONFIG_BLK_DEV_IDE_SATA is not set
+CONFIG_BLK_DEV_INITRD=y
+# CONFIG_BLK_DEV_INTEGRITY is not set
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_BLK_DEV_IT8172 is not set
+# CONFIG_BLK_DEV_IT8213 is not set
+# CONFIG_BLK_DEV_IT821X is not set
+# CONFIG_BLK_DEV_JMICRON is not set
+# CONFIG_BLK_DEV_LOOP is not set
+# CONFIG_BLK_DEV_NBD is not set
+# CONFIG_BLK_DEV_NS87415 is not set
+# CONFIG_BLK_DEV_OFFBOARD is not set
+# CONFIG_BLK_DEV_OPTI621 is not set
+# CONFIG_BLK_DEV_PDC202XX_NEW is not set
+# CONFIG_BLK_DEV_PDC202XX_OLD is not set
+# CONFIG_BLK_DEV_PIIX is not set
+# CONFIG_BLK_DEV_PLATFORM is not set
+# CONFIG_BLK_DEV_QD65XX is not set
+# CONFIG_BLK_DEV_RAM is not set
+# CONFIG_BLK_DEV_RBD is not set
+# CONFIG_BLK_DEV_RZ1000 is not set
+# CONFIG_BLK_DEV_SC1200 is not set
+# CONFIG_BLK_DEV_SD is not set
+# CONFIG_BLK_DEV_SIIMAGE is not set
+# CONFIG_BLK_DEV_SIS5513 is not set
+# CONFIG_BLK_DEV_SL82C105 is not set
+# CONFIG_BLK_DEV_SLC90E66 is not set
+# CONFIG_BLK_DEV_SR is not set
+# CONFIG_BLK_DEV_SVWKS is not set
+# CONFIG_BLK_DEV_SX8 is not set
+# CONFIG_BLK_DEV_TC86C001 is not set
+# CONFIG_BLK_DEV_TRIFLEX is not set
+# CONFIG_BLK_DEV_TRM290 is not set
+# CONFIG_BLK_DEV_UB is not set
+# CONFIG_BLK_DEV_UMC8672 is not set
+# CONFIG_BLK_DEV_UMEM is not set
+# CONFIG_BLK_DEV_VIA82CXXX is not set
+# CONFIG_BLK_DEV_XIP is not set
+CONFIG_BLOCK=y
+# CONFIG_BMP085 is not set
+# CONFIG_BNX2 is not set
+# CONFIG_BONDING is not set
+# CONFIG_BOOT_PRINTK_DELAY is not set
+CONFIG_BOOT_RAW=y
+# CONFIG_BPQETHER is not set
+# CONFIG_BRCM80211 is not set
+CONFIG_BRIDGE=y
+# CONFIG_BRIDGE_EBT_802_3 is not set
+# CONFIG_BRIDGE_EBT_AMONG is not set
+# CONFIG_BRIDGE_EBT_ARP is not set
+# CONFIG_BRIDGE_EBT_ARPREPLY is not set
+# CONFIG_BRIDGE_EBT_BROUTE is not set
+# CONFIG_BRIDGE_EBT_DNAT is not set
+# CONFIG_BRIDGE_EBT_IP is not set
+# CONFIG_BRIDGE_EBT_IP6 is not set
+# CONFIG_BRIDGE_EBT_LIMIT is not set
+# CONFIG_BRIDGE_EBT_LOG is not set
+# CONFIG_BRIDGE_EBT_MARK is not set
+# CONFIG_BRIDGE_EBT_MARK_T is not set
+# CONFIG_BRIDGE_EBT_NFLOG is not set
+# CONFIG_BRIDGE_EBT_PKTTYPE is not set
+# CONFIG_BRIDGE_EBT_REDIRECT is not set
+# CONFIG_BRIDGE_EBT_SNAT is not set
+# CONFIG_BRIDGE_EBT_STP is not set
+# CONFIG_BRIDGE_EBT_T_FILTER is not set
+# CONFIG_BRIDGE_EBT_T_NAT is not set
+# CONFIG_BRIDGE_EBT_ULOG is not set
+# CONFIG_BRIDGE_EBT_VLAN is not set
+CONFIG_BRIDGE_IGMP_SNOOPING=y
+# CONFIG_BRIDGE_NETFILTER is not set
+# CONFIG_BRIDGE_NF_EBTABLES is not set
+# CONFIG_BROADCOM_PHY is not set
+CONFIG_BROKEN_ON_SMP=y
+# CONFIG_BSD_DISKLABEL is not set
+CONFIG_BSD_PROCESS_ACCT=y
+# CONFIG_BSD_PROCESS_ACCT_V3 is not set
+# CONFIG_BT is not set
+# CONFIG_BTRFS_FS is not set
+# CONFIG_BT_ATH3K is not set
+# CONFIG_BT_BNEP is not set
+CONFIG_BT_BNEP_MC_FILTER=y
+CONFIG_BT_BNEP_PROTO_FILTER=y
+# CONFIG_BT_CMTP is not set
+# CONFIG_BT_HCIBCM203X is not set
+# CONFIG_BT_HCIBFUSB is not set
+# CONFIG_BT_HCIBLUECARD is not set
+# CONFIG_BT_HCIBPA10X is not set
+# CONFIG_BT_HCIBT3C is not set
+# CONFIG_BT_HCIBTSDIO is not set
+# CONFIG_BT_HCIBTUART is not set
+# CONFIG_BT_HCIBTUSB is not set
+# CONFIG_BT_HCIDTL1 is not set
+# CONFIG_BT_HCIUART is not set
+# CONFIG_BT_HCIUART_ATH3K is not set
+CONFIG_BT_HCIUART_BCSP=y
+CONFIG_BT_HCIUART_H4=y
+# CONFIG_BT_HCIUART_LL is not set
+# CONFIG_BT_HCIVHCI is not set
+# CONFIG_BT_HIDP is not set
+CONFIG_BT_L2CAP=y
+# CONFIG_BT_MRVL is not set
+# CONFIG_BT_RFCOMM is not set
+CONFIG_BT_RFCOMM_TTY=y
+CONFIG_BT_SCO=y
+CONFIG_BUG=y
+# CONFIG_C2PORT is not set
+# CONFIG_CAIF is not set
+# CONFIG_CAN is not set
+# CONFIG_CAPI_AVM is not set
+# CONFIG_CAPI_EICON is not set
+# CONFIG_CAPI_TRACE is not set
+CONFIG_CARDBUS=y
+# CONFIG_CARDMAN_4000 is not set
+# CONFIG_CARDMAN_4040 is not set
+# CONFIG_CASSINI is not set
+CONFIG_CAVIUM_OCTEON_HELPER=y
+# CONFIG_CAVIUM_OCTEON_REFERENCE_BOARD is not set
+# CONFIG_CAVIUM_OCTEON_SIMULATOR is not set
+# CONFIG_CB710_CORE is not set
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+# CONFIG_CC_STACKPROTECTOR is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_CEPH_FS is not set
+# CONFIG_CEPH_LIB is not set
+# CONFIG_CFG80211 is not set
+# CONFIG_CGROUPS is not set
+# CONFIG_CHARGER_GPIO is not set
+# CONFIG_CHELSIO_T1 is not set
+# CONFIG_CHELSIO_T3 is not set
+# CONFIG_CHELSIO_T4 is not set
+# CONFIG_CHR_DEV_OSST is not set
+# CONFIG_CHR_DEV_SCH is not set
+# CONFIG_CHR_DEV_SG is not set
+# CONFIG_CHR_DEV_ST is not set
+# CONFIG_CICADA_PHY is not set
+# CONFIG_CIFS is not set
+# CONFIG_CIFS_DEBUG2 is not set
+# CONFIG_CIFS_EXPERIMENTAL is not set
+# CONFIG_CIFS_NFSD_EXPORT is not set
+CONFIG_CIFS_POSIX=y
+CONFIG_CIFS_STATS=y
+# CONFIG_CIFS_STATS2 is not set
+# CONFIG_CIFS_WEAK_PW_HASH is not set
+# CONFIG_CIFS_XATTR is not set
+# CONFIG_CLEANCACHE is not set
+CONFIG_CLS_U32_MARK=y
+CONFIG_CLS_U32_PERF=y
+CONFIG_CMDLINE=""
+# CONFIG_CMDLINE_BOOL is not set
+# CONFIG_CMDLINE_FORCE is not set
+# CONFIG_CNIC is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_CODE_PATCHING_SELFTEST is not set
+# CONFIG_COMEDI is not set
+# CONFIG_COMPACTION is not set
+# CONFIG_COMPAT_BRK is not set
+# CONFIG_CONFIGFS_FS is not set
+# CONFIG_CONNECTOR is not set
+CONFIG_CONSTRUCTORS=y
+# CONFIG_CONTEXT_SWITCH_TRACER is not set
+# CONFIG_COPS is not set
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+# CONFIG_CPU_DCACHE_DISABLE is not set
+# CONFIG_CPU_FREQ is not set
+# CONFIG_CPU_IDLE is not set
+# CONFIG_CRAMFS is not set
+CONFIG_CRASHLOG=y
+# CONFIG_CRASH_DUMP is not set
+# CONFIG_CRC16 is not set
+CONFIG_CRC32=y
+# CONFIG_CRC7 is not set
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC_ITU_T is not set
+# CONFIG_CRC_T10DIF is not set
+CONFIG_CROSS_COMPILE=""
+CONFIG_CRYPTO=y
+# CONFIG_CRYPTO_AEAD is not set
+# CONFIG_CRYPTO_AES is not set
+# CONFIG_CRYPTO_AES_586 is not set
+# CONFIG_CRYPTO_AES_NI_INTEL is not set
+# CONFIG_CRYPTO_ALGAPI is not set
+# CONFIG_CRYPTO_ALGAPI2 is not set
+# CONFIG_CRYPTO_ANSI_CPRNG is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_AUTHENC is not set
+# CONFIG_CRYPTO_BLKCIPHER is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+# CONFIG_CRYPTO_CBC is not set
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_CRC32C is not set
+# CONFIG_CRYPTO_CRC32C_INTEL is not set
+# CONFIG_CRYPTO_CRYPTD is not set
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_DES is not set
+# CONFIG_CRYPTO_DEV_HIFN_795X is not set
+# CONFIG_CRYPTO_DEV_MV_CESA is not set
+# CONFIG_CRYPTO_DEV_TALITOS is not set
+# CONFIG_CRYPTO_ECB is not set
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_FIPS is not set
+# CONFIG_CRYPTO_GCM is not set
+# CONFIG_CRYPTO_GF128MUL is not set
+# CONFIG_CRYPTO_GHASH is not set
+# CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL is not set
+# CONFIG_CRYPTO_HASH is not set
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_HW is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_LRW is not set
+# CONFIG_CRYPTO_LZO is not set
+# CONFIG_CRYPTO_MANAGER is not set
+# CONFIG_CRYPTO_MANAGER2 is not set
+CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
+# CONFIG_CRYPTO_MD4 is not set
+# CONFIG_CRYPTO_MD5 is not set
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
+# CONFIG_CRYPTO_NULL is not set
+# CONFIG_CRYPTO_PCBC is not set
+# CONFIG_CRYPTO_PCOMP is not set
+# CONFIG_CRYPTO_PCOMP2 is not set
+# CONFIG_CRYPTO_PCRYPT is not set
+# CONFIG_CRYPTO_RMD128 is not set
+# CONFIG_CRYPTO_RMD160 is not set
+# CONFIG_CRYPTO_RMD256 is not set
+# CONFIG_CRYPTO_RMD320 is not set
+# CONFIG_CRYPTO_RNG is not set
+# CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SALSA20_586 is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_SEQIV is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_TEST is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+# CONFIG_CRYPTO_TWOFISH_586 is not set
+# CONFIG_CRYPTO_TWOFISH_COMMON is not set
+# CONFIG_CRYPTO_USER_API_HASH is not set
+# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
+# CONFIG_CRYPTO_VMAC is not set
+# CONFIG_CRYPTO_WP512 is not set
+# CONFIG_CRYPTO_XCBC is not set
+# CONFIG_CRYPTO_XTS is not set
+# CONFIG_CRYPTO_ZLIB is not set
+# CONFIG_CRYSTALHD is not set
+# CONFIG_CS5535_MFGPT is not set
+# CONFIG_CUSE is not set
+# CONFIG_CXT1E1 is not set
+# CONFIG_DAB is not set
+# CONFIG_DAVICOM_PHY is not set
+# CONFIG_DCB is not set
+# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
+# CONFIG_DEBUG_BUGVERBOSE is not set
+# CONFIG_DEBUG_CREDENTIALS is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_ERRORS is not set
+# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
+CONFIG_DEBUG_FS=y
+# CONFIG_DEBUG_GPIO is not set
+# CONFIG_DEBUG_ICEDCC is not set
+# CONFIG_DEBUG_INFO is not set
+CONFIG_DEBUG_INFO_REDUCED=y
+# CONFIG_DEBUG_KERNEL is not set
+# CONFIG_DEBUG_KMEMLEAK is not set
+# CONFIG_DEBUG_KOBJECT is not set
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_LL is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_DEBUG_LOCK_ALLOC is not set
+# CONFIG_DEBUG_MEMORY_INIT is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_NOTIFIERS is not set
+# CONFIG_DEBUG_OBJECTS is not set
+# CONFIG_DEBUG_PAGEALLOC is not set
+# CONFIG_DEBUG_PREEMPT is not set
+# CONFIG_DEBUG_RODATA is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_DEBUG_SECTION_MISMATCH is not set
+# CONFIG_DEBUG_SET_MODULE_RONX is not set
+# CONFIG_DEBUG_SG is not set
+# CONFIG_DEBUG_SHIRQ is not set
+# CONFIG_DEBUG_SLAB is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
+# CONFIG_DEBUG_STACKOVERFLOW is not set
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
+# CONFIG_DECNET is not set
+CONFIG_DECOMPRESS_LZMA_NEEDED=y
+CONFIG_DEFAULT_DEADLINE=y
+CONFIG_DEFAULT_IOSCHED="deadline"
+CONFIG_DEFAULT_MESSAGE_LOGLEVEL=4
+CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
+# CONFIG_DEFAULT_NOOP is not set
+# CONFIG_DEFAULT_RENO is not set
+CONFIG_DEFAULT_SECURITY=""
+CONFIG_DEFAULT_SECURITY_DAC=y
+CONFIG_DEFAULT_TCP_CONG="westwood"
+CONFIG_DEFAULT_WESTWOOD=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+# CONFIG_DEPRECATED_PARAM_STRUCT is not set
+# CONFIG_DETECT_HUNG_TASK is not set
+# CONFIG_DEVKMEM is not set
+CONFIG_DEVPORT=y
+# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
+# CONFIG_DEVTMPFS is not set
+# CONFIG_DEVTMPFS_MOUNT is not set
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_DISPLAY_SUPPORT is not set
+# CONFIG_DL2K is not set
+# CONFIG_DLM is not set
+# CONFIG_DM9000 is not set
+# CONFIG_DMADEVICES is not set
+# CONFIG_DMADEVICES_DEBUG is not set
+# CONFIG_DMASCC is not set
+# CONFIG_DMATEST is not set
+# CONFIG_DMA_API_DEBUG is not set
+# CONFIG_DMA_ENGINE is not set
+# CONFIG_DM_LOG_USERSPACE is not set
+# CONFIG_DM_RAID is not set
+# CONFIG_DM_FLAKEY is not set
+# CONFIG_DNET is not set
+# CONFIG_DNOTIFY is not set
+# CONFIG_DRAGONRISE_FF is not set
+# CONFIG_DRM is not set
+# CONFIG_DS1682 is not set
+# CONFIG_DTLK is not set
+# CONFIG_DUMMY is not set
+# CONFIG_DVB_CORE is not set
+# CONFIG_DX_SEP is not set
+# CONFIG_DYNAMIC_DEBUG is not set
+# CONFIG_E100 is not set
+# CONFIG_E1000 is not set
+# CONFIG_E1000E is not set
+# CONFIG_EASYCAP is not set
+# CONFIG_ECHO is not set
+# CONFIG_ECONET is not set
+# CONFIG_EDAC is not set
+# CONFIG_EEPROM_93CX6 is not set
+# CONFIG_EEPROM_AT24 is not set
+# CONFIG_EEPROM_AT25 is not set
+# CONFIG_EEPROM_LEGACY is not set
+# CONFIG_EEPROM_MAX6875 is not set
+# CONFIG_EFI_PARTITION is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_ELF_CORE is not set
+CONFIG_EMBEDDED=y
+# CONFIG_ENABLE_MUST_CHECK is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+# CONFIG_ENC28J60 is not set
+# CONFIG_ENCLOSURE_SERVICES is not set
+# CONFIG_EPIC100 is not set
+CONFIG_EPOLL=y
+# CONFIG_EQUALIZER is not set
+# CONFIG_ET131X is not set
+# CONFIG_ETHOC is not set
+CONFIG_EVENTFD=y
+CONFIG_EXPERIMENTAL=y
+CONFIG_EXPERT=y
+# CONFIG_EXPORTFS is not set
+# CONFIG_EXT2_FS is not set
+# CONFIG_EXT2_FS_XATTR is not set
+# CONFIG_EXT2_FS_XIP is not set
+# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
+# CONFIG_EXT3_FS is not set
+# CONFIG_EXT3_FS_XATTR is not set
+# CONFIG_EXT4_DEBUG is not set
+# CONFIG_EXT4_FS is not set
+# CONFIG_EXT4_FS_POSIX_ACL is not set
+# CONFIG_EXT4_FS_SECURITY is not set
+CONFIG_EXT4_FS_XATTR=y
+CONFIG_EXT4_USE_FOR_EXT23=y
+CONFIG_EXTRA_FIRMWARE=""
+CONFIG_EXTRA_TARGETS=""
+# CONFIG_EZX_PCAP is not set
+# CONFIG_FAIR_GROUP_SCHED is not set
+# CONFIG_FANOTIFY is not set
+CONFIG_FAT_DEFAULT_CODEPAGE=437
+CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
+# CONFIG_FAT_FS is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_FB is not set
+# CONFIG_FB_3DFX is not set
+# CONFIG_FB_ARC is not set
+# CONFIG_FB_ARK is not set
+# CONFIG_FB_ASILIANT is not set
+# CONFIG_FB_ATY is not set
+# CONFIG_FB_ATY128 is not set
+# CONFIG_FB_BACKLIGHT is not set
+# CONFIG_FB_BOOT_VESA_SUPPORT is not set
+# CONFIG_FB_BROADSHEET is not set
+# CONFIG_FB_CARMINE is not set
+# CONFIG_FB_CFB_COPYAREA is not set
+# CONFIG_FB_CFB_FILLRECT is not set
+# CONFIG_FB_CFB_IMAGEBLIT is not set
+# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
+# CONFIG_FB_CIRRUS is not set
+# CONFIG_FB_CYBER2000 is not set
+# CONFIG_FB_DDC is not set
+# CONFIG_FB_FOREIGN_ENDIAN is not set
+# CONFIG_FB_GEODE is not set
+# CONFIG_FB_HGA is not set
+# CONFIG_FB_IBM_GXT4500 is not set
+# CONFIG_FB_IMSTT is not set
+# CONFIG_FB_KYRO is not set
+# CONFIG_FB_LE80578 is not set
+# CONFIG_FB_MACMODES is not set
+# CONFIG_FB_MATROX is not set
+# CONFIG_FB_MB862XX is not set
+# CONFIG_FB_METRONOME is not set
+# CONFIG_FB_MODE_HELPERS is not set
+# CONFIG_FB_N411 is not set
+# CONFIG_FB_NEOMAGIC is not set
+# CONFIG_FB_NVIDIA is not set
+# CONFIG_FB_OF is not set
+# CONFIG_FB_PM2 is not set
+# CONFIG_FB_PM3 is not set
+# CONFIG_FB_PS3 is not set
+# CONFIG_FB_PXA is not set
+# CONFIG_FB_RADEON is not set
+# CONFIG_FB_RIVA is not set
+# CONFIG_FB_S1D13XXX is not set
+# CONFIG_FB_S3 is not set
+# CONFIG_FB_SAVAGE is not set
+# CONFIG_FB_SIS is not set
+# CONFIG_FB_SVGALIB is not set
+# CONFIG_FB_SYS_COPYAREA is not set
+# CONFIG_FB_SYS_FILLRECT is not set
+# CONFIG_FB_SYS_FOPS is not set
+# CONFIG_FB_SYS_IMAGEBLIT is not set
+# CONFIG_FB_TILEBLITTING is not set
+# CONFIG_FB_TRIDENT is not set
+# CONFIG_FB_UDL is not set
+# CONFIG_FB_VGA16 is not set
+# CONFIG_FB_VIA is not set
+# CONFIG_FB_VIRTUAL is not set
+# CONFIG_FB_VOODOO1 is not set
+# CONFIG_FB_VT8623 is not set
+# CONFIG_FCOE is not set
+# CONFIG_FCOE_FNIC is not set
+# CONFIG_FDDI is not set
+# CONFIG_FEALNX is not set
+# CONFIG_FHANDLE is not set
+CONFIG_FIB_RULES=y
+CONFIG_FILE_LOCKING=y
+# CONFIG_FIREWIRE is not set
+# CONFIG_FIREWIRE_NOSY is not set
+# CONFIG_FIRMWARE_IN_KERNEL is not set
+# CONFIG_FIXED_PHY is not set
+CONFIG_FLATMEM=y
+CONFIG_FLATMEM_MANUAL=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_FORCEDETH is not set
+CONFIG_FORCE_MAX_ZONEORDER=11
+# CONFIG_FRAMEBUFFER_CONSOLE is not set
+CONFIG_FRAME_WARN=1024
+# CONFIG_FREEZER is not set
+# CONFIG_FSCACHE is not set
+CONFIG_FSNOTIFY=y
+# CONFIG_FS_POSIX_ACL is not set
+# CONFIG_FT1000 is not set
+# CONFIG_FTL is not set
+# CONFIG_FTRACE is not set
+# CONFIG_FTRACE_STARTUP_TEST is not set
+# CONFIG_FTR_FIXUP_SELFTEST is not set
+# CONFIG_FUNCTION_TRACER is not set
+# CONFIG_FUSE_FS is not set
+# CONFIG_FUSION is not set
+# CONFIG_FUSION_FC is not set
+# CONFIG_FUSION_SAS is not set
+# CONFIG_FUSION_SPI is not set
+CONFIG_FUTEX=y
+CONFIG_FW_LOADER=y
+CONFIG_GACT_PROB=y
+# CONFIG_GAMEPORT is not set
+# CONFIG_GCOV_KERNEL is not set
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_FIND_BIT_LE=y
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_IRQ_PROBE=y
+CONFIG_GENERIC_TIME=y
+# CONFIG_GFS2_FS is not set
+# CONFIG_GIGASET_CAPI is not set
+# CONFIG_GIGASET_DEBUG is not set
+# CONFIG_GPIOLIB is not set
+# CONFIG_GPIO_74X164 is not set
+# CONFIG_GPIO_ADP5588 is not set
+# CONFIG_GPIO_BASIC_MMIO is not set
+# CONFIG_GPIO_BT8XX is not set
+# CONFIG_GPIO_CS5535 is not set
+# CONFIG_GPIO_DEVICE is not set
+# CONFIG_GPIO_IT8761E is not set
+# CONFIG_GPIO_LANGWELL is not set
+# CONFIG_GPIO_MAX7300 is not set
+# CONFIG_GPIO_MAX7301 is not set
+# CONFIG_GPIO_MAX732X is not set
+# CONFIG_GPIO_MC33880 is not set
+# CONFIG_GPIO_MCP23S08 is not set
+# CONFIG_GPIO_ML_IOH is not set
+# CONFIG_GPIO_PCA953X is not set
+# CONFIG_GPIO_PCF857X is not set
+# CONFIG_GPIO_PCH is not set
+# CONFIG_GPIO_RDC321X is not set
+# CONFIG_GPIO_SCH is not set
+# CONFIG_GPIO_SX150X is not set
+# CONFIG_GPIO_SYSFS is not set
+# CONFIG_GPIO_VX855 is not set
+# CONFIG_GPIO_XILINX is not set
+# CONFIG_GREENASIA_FF is not set
+# CONFIG_HAMACHI is not set
+CONFIG_HAMRADIO=y
+# CONFIG_HAPPYMEAL is not set
+# CONFIG_HARDLOCKUP_DETECTOR is not set
+# CONFIG_HAVE_AOUT is not set
+CONFIG_HAVE_KPROBES=y
+CONFIG_HAVE_KRETPROBES=y
+# CONFIG_HCALL_STATS is not set
+# CONFIG_HDLC is not set
+# CONFIG_HDLC_CISCO is not set
+# CONFIG_HDLC_FR is not set
+# CONFIG_HDLC_PPP is not set
+# CONFIG_HDLC_RAW is not set
+# CONFIG_HDLC_RAW_ETH is not set
+# CONFIG_HEADERS_CHECK is not set
+# CONFIG_HERMES is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HIBERNATION is not set
+# CONFIG_HID is not set
+# CONFIG_HIDRAW is not set
+# CONFIG_HID_3M_PCT is not set
+# CONFIG_HID_A4TECH is not set
+# CONFIG_HID_ACRUX_FF is not set
+# CONFIG_HID_APPLE is not set
+# CONFIG_HID_BELKIN is not set
+# CONFIG_HID_CANDO is not set
+# CONFIG_HID_CHERRY is not set
+# CONFIG_HID_CHICONY is not set
+# CONFIG_HID_CYPRESS is not set
+# CONFIG_HID_DRAGONRISE is not set
+# CONFIG_HID_EGALAX is not set
+# CONFIG_HID_ELECOM is not set
+# CONFIG_HID_EMS_FF is not set
+# CONFIG_HID_EZKEY is not set
+# CONFIG_HID_GREENASIA is not set
+# CONFIG_HID_GYRATION is not set
+# CONFIG_HID_KENSINGTON is not set
+# CONFIG_HID_KEYTOUCH is not set
+# CONFIG_HID_KYE is not set
+# CONFIG_HID_LCPOWER is not set
+# CONFIG_HID_LOGITECH is not set
+# CONFIG_HID_MAGICMOUSE is not set
+# CONFIG_HID_MICROSOFT is not set
+# CONFIG_HID_MONTEREY is not set
+# CONFIG_HID_MOSART is not set
+# CONFIG_HID_MULTITOUCH is not set
+# CONFIG_HID_NTRIG is not set
+# CONFIG_HID_ORTEK is not set
+# CONFIG_HID_PANTHERLORD is not set
+# CONFIG_HID_PETALYNX is not set
+# CONFIG_HID_PICOLCD is not set
+# CONFIG_HID_PID is not set
+# CONFIG_HID_PRODIKEYS is not set
+# CONFIG_HID_QUANTA is not set
+# CONFIG_HID_ROCCAT is not set
+# CONFIG_HID_ROCCAT_ARVO is not set
+# CONFIG_HID_ROCCAT_KONE is not set
+# CONFIG_HID_ROCCAT_KONEPLUS is not set
+# CONFIG_HID_ROCCAT_KOVAPLUS is not set
+# CONFIG_HID_ROCCAT_PYRA is not set
+# CONFIG_HID_SAMSUNG is not set
+# CONFIG_HID_SMARTJOYPLUS is not set
+# CONFIG_HID_SONY is not set
+# CONFIG_HID_STANTUM is not set
+# CONFIG_HID_SUNPLUS is not set
+# CONFIG_HID_SUPPORT is not set
+# CONFIG_HID_THRUSTMASTER is not set
+# CONFIG_HID_TOPSEED is not set
+# CONFIG_HID_TWINHAN is not set
+# CONFIG_HID_UCLOGIC is not set
+# CONFIG_HID_WACOM is not set
+# CONFIG_HID_WALTOP is not set
+# CONFIG_HID_ZEROPLUS is not set
+# CONFIG_HID_ZYDACRON is not set
+# CONFIG_HID_ACRUX is not set
+# CONFIG_HIGHMEM is not set
+CONFIG_HIGH_RES_TIMERS=y
+# CONFIG_HIPPI is not set
+# CONFIG_HMC6352 is not set
+# CONFIG_HOSTAP is not set
+# CONFIG_HOSTAP_CS is not set
+# CONFIG_HOSTAP_PCI is not set
+# CONFIG_HOSTAP_PLX is not set
+CONFIG_HOTPLUG=y
+# CONFIG_HOTPLUG_CPU is not set
+# CONFIG_HOTPLUG_PCI is not set
+# CONFIG_HP100 is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_HP_ILO is not set
+# CONFIG_HTC_EGPIO is not set
+# CONFIG_HTC_I2CPLD is not set
+# CONFIG_HTC_PASIC3 is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_HVC_DCC is not set
+# CONFIG_HVC_UDBG is not set
+# CONFIG_HWMON is not set
+# CONFIG_HWMON_VID is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_HW_RANDOM_AMD is not set
+# CONFIG_HW_RANDOM_GEODE is not set
+# CONFIG_HW_RANDOM_INTEL is not set
+# CONFIG_HW_RANDOM_TIMERIOMEM is not set
+# CONFIG_HW_RANDOM_VIA is not set
+# CONFIG_HYPERV is not set
+# CONFIG_HYSDN is not set
+CONFIG_HZ=100
+CONFIG_HZ_100=y
+# CONFIG_HZ_1000 is not set
+# CONFIG_HZ_1024 is not set
+# CONFIG_HZ_128 is not set
+# CONFIG_HZ_250 is not set
+# CONFIG_HZ_256 is not set
+# CONFIG_HZ_300 is not set
+# CONFIG_HZ_48 is not set
+# CONFIG_I2C is not set
+# CONFIG_I2C_ALGOBIT is not set
+# CONFIG_I2C_ALGOPCA is not set
+# CONFIG_I2C_ALGOPCF is not set
+# CONFIG_I2C_ALI1535 is not set
+# CONFIG_I2C_ALI1563 is not set
+# CONFIG_I2C_ALI15X3 is not set
+# CONFIG_I2C_AMD756 is not set
+# CONFIG_I2C_AMD8111 is not set
+# CONFIG_I2C_CHARDEV is not set
+# CONFIG_I2C_COMPAT is not set
+# CONFIG_I2C_DEBUG_ALGO is not set
+# CONFIG_I2C_DEBUG_BUS is not set
+# CONFIG_I2C_DEBUG_CORE is not set
+# CONFIG_I2C_DESIGNWARE is not set
+# CONFIG_I2C_DIOLAN_U2C is not set
+# CONFIG_I2C_EG20T is not set
+# CONFIG_I2C_ELEKTOR is not set
+# CONFIG_I2C_GPIO is not set
+# CONFIG_I2C_HELPER_AUTO is not set
+# CONFIG_I2C_I801 is not set
+# CONFIG_I2C_IBM_IIC is not set
+# CONFIG_I2C_INTEL_MID is not set
+# CONFIG_I2C_ISCH is not set
+# CONFIG_I2C_MPC is not set
+# CONFIG_I2C_MUX is not set
+# CONFIG_I2C_NFORCE2 is not set
+# CONFIG_I2C_OCORES is not set
+# CONFIG_I2C_PARPORT is not set
+# CONFIG_I2C_PARPORT_LIGHT is not set
+# CONFIG_I2C_PCA_ISA is not set
+# CONFIG_I2C_PCA_PLATFORM is not set
+# CONFIG_I2C_PIIX4 is not set
+# CONFIG_I2C_SIMTEC is not set
+# CONFIG_I2C_SCMI is not set
+# CONFIG_I2C_SIS5595 is not set
+# CONFIG_I2C_SIS630 is not set
+# CONFIG_I2C_SIS96X is not set
+# CONFIG_I2C_SMBUS is not set
+# CONFIG_I2C_STUB is not set
+# CONFIG_I2C_TAOS_EVM is not set
+# CONFIG_I2C_TINY_USB is not set
+# CONFIG_I2C_VIA is not set
+# CONFIG_I2C_VIAPRO is not set
+# CONFIG_I2C_XILINX is not set
+# CONFIG_I2O is not set
+# CONFIG_I82092 is not set
+# CONFIG_I82365 is not set
+# CONFIG_IBM_ASM is not set
+# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
+# CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
+# CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
+# CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
+# CONFIG_IBM_NEW_EMAC_RGMII is not set
+# CONFIG_IBM_NEW_EMAC_TAH is not set
+# CONFIG_IBM_NEW_EMAC_ZMII is not set
+# CONFIG_ICPLUS_PHY is not set
+# CONFIG_ICS932S401 is not set
+# CONFIG_IDE is not set
+# CONFIG_IDE_GD is not set
+# CONFIG_IDE_PHISON is not set
+CONFIG_IDE_PROC_FS=y
+# CONFIG_IDE_TASK_IOCTL is not set
+# CONFIG_IDEAPAD_LAPTOP is not set
+# CONFIG_IEEE1394 is not set
+# CONFIG_IEEE1394_DV1394 is not set
+# CONFIG_IEEE1394_ETH1394 is not set
+# CONFIG_IEEE1394_OHCI1394 is not set
+# CONFIG_IEEE1394_PCILYNX is not set
+# CONFIG_IEEE1394_RAWIO is not set
+# CONFIG_IEEE1394_VERBOSEDEBUG is not set
+# CONFIG_IEEE1394_VIDEO1394 is not set
+# CONFIG_IEEE802154 is not set
+# CONFIG_IFB is not set
+# CONFIG_IGB is not set
+# CONFIG_IGBVF is not set
+# CONFIG_IIO is not set
+# CONFIG_IKCONFIG is not set
+# CONFIG_IKCONFIG_PROC is not set
+# CONFIG_IMAGE_CMDLINE_HACK is not set
+CONFIG_INET=y
+# CONFIG_INET6_AH is not set
+# CONFIG_INET6_ESP is not set
+# CONFIG_INET6_IPCOMP is not set
+# CONFIG_INET6_TUNNEL is not set
+# CONFIG_INET6_XFRM_MODE_BEET is not set
+# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
+# CONFIG_INET6_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET6_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET6_XFRM_TUNNEL is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_DIAG is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_LRO is not set
+# CONFIG_INET_TCP_DIAG is not set
+# CONFIG_INET_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INFINIBAND is not set
+# CONFIG_INFTL is not set
+# CONFIG_INITRAMFS_COMPRESSION_BZIP2 is not set
+# CONFIG_INITRAMFS_COMPRESSION_GZIP is not set
+# CONFIG_INITRAMFS_COMPRESSION_LZMA is not set
+CONFIG_INITRAMFS_COMPRESSION_NONE=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+# CONFIG_INLINE_READ_LOCK is not set
+# CONFIG_INLINE_READ_LOCK_BH is not set
+# CONFIG_INLINE_READ_LOCK_IRQ is not set
+# CONFIG_INLINE_READ_LOCK_IRQSAVE is not set
+# CONFIG_INLINE_READ_TRYLOCK is not set
+CONFIG_INLINE_READ_UNLOCK=y
+# CONFIG_INLINE_READ_UNLOCK_BH is not set
+CONFIG_INLINE_READ_UNLOCK_IRQ=y
+# CONFIG_INLINE_READ_UNLOCK_IRQRESTORE is not set
+# CONFIG_INLINE_SPIN_LOCK is not set
+# CONFIG_INLINE_SPIN_LOCK_BH is not set
+# CONFIG_INLINE_SPIN_LOCK_IRQ is not set
+# CONFIG_INLINE_SPIN_LOCK_IRQSAVE is not set
+# CONFIG_INLINE_SPIN_TRYLOCK is not set
+# CONFIG_INLINE_SPIN_TRYLOCK_BH is not set
+CONFIG_INLINE_SPIN_UNLOCK=y
+# CONFIG_INLINE_SPIN_UNLOCK_BH is not set
+CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
+# CONFIG_INLINE_SPIN_UNLOCK_IRQRESTORE is not set
+# CONFIG_INLINE_WRITE_LOCK is not set
+# CONFIG_INLINE_WRITE_LOCK_BH is not set
+# CONFIG_INLINE_WRITE_LOCK_IRQ is not set
+# CONFIG_INLINE_WRITE_LOCK_IRQSAVE is not set
+# CONFIG_INLINE_WRITE_TRYLOCK is not set
+CONFIG_INLINE_WRITE_UNLOCK=y
+# CONFIG_INLINE_WRITE_UNLOCK_BH is not set
+CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
+# CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE is not set
+# CONFIG_INOTIFY_USER is not set
+# CONFIG_INPUT is not set
+# CONFIG_INPUT_AD714X is not set
+# CONFIG_INPUT_ADXL34X is not set
+# CONFIG_INPUT_APANEL is not set
+# CONFIG_INPUT_ATI_REMOTE is not set
+# CONFIG_INPUT_ATI_REMOTE2 is not set
+# CONFIG_INPUT_ATLAS_BTNS is not set
+# CONFIG_INPUT_CMA3000 is not set
+# CONFIG_INPUT_CM109 is not set
+# CONFIG_INPUT_EVBUG is not set
+# CONFIG_INPUT_EVDEV is not set
+# CONFIG_INPUT_FF_MEMLESS is not set
+# CONFIG_INPUT_GPIO is not set
+# CONFIG_INPUT_GPIO_ROTARY_ENCODER is not set
+# CONFIG_INPUT_JOYDEV is not set
+# CONFIG_INPUT_JOYSTICK is not set
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_KEYSPAN_REMOTE is not set
+CONFIG_INPUT_MISC=y
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_INPUT_MOUSEDEV is not set
+# CONFIG_INPUT_PCF8574 is not set
+# CONFIG_INPUT_PCSPKR is not set
+# CONFIG_INPUT_POLLDEV is not set
+# CONFIG_INPUT_POWERMATE is not set
+# CONFIG_INPUT_SPARSEKMAP is not set
+# CONFIG_INPUT_TABLET is not set
+# CONFIG_INPUT_TOUCHSCREEN is not set
+# CONFIG_INPUT_UINPUT is not set
+# CONFIG_INPUT_WINBOND_CIR is not set
+# CONFIG_INPUT_WISTRON_BTNS is not set
+# CONFIG_INTEL_MID_PTI is not set
+# CONFIG_INPUT_YEALINK is not set
+# CONFIG_INTEL_IDLE is not set
+# CONFIG_INTEL_MID_PTI is not set
+# CONFIG_IOSCHED_CFQ is not set
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_NOOP=y
+# CONFIG_IP_FIB_TRIE_STATS is not set
+# CONFIG_IP_SET is not set
+# CONFIG_IP1000 is not set
+# CONFIG_IP17XX_PHY is not set
+# CONFIG_IP6_NF_FILTER is not set
+# CONFIG_IP6_NF_IPTABLES is not set
+# CONFIG_IP6_NF_MANGLE is not set
+# CONFIG_IP6_NF_MATCH_AH is not set
+# CONFIG_IP6_NF_MATCH_EUI64 is not set
+# CONFIG_IP6_NF_MATCH_FRAG is not set
+# CONFIG_IP6_NF_MATCH_HL is not set
+# CONFIG_IP6_NF_MATCH_IPV6HEADER is not set
+# CONFIG_IP6_NF_MATCH_MH is not set
+# CONFIG_IP6_NF_MATCH_OPTS is not set
+# CONFIG_IP6_NF_MATCH_RT is not set
+# CONFIG_IP6_NF_QUEUE is not set
+# CONFIG_IP6_NF_RAW is not set
+# CONFIG_IP6_NF_TARGET_HL is not set
+# CONFIG_IP6_NF_TARGET_LOG is not set
+# CONFIG_IP6_NF_TARGET_REJECT is not set
+# CONFIG_IPC_NS is not set
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_IPV6 is not set
+# CONFIG_IPV6_MIP6 is not set
+# CONFIG_IPV6_MROUTE is not set
+# CONFIG_IPV6_MROUTE_MULTIPLE_TABLES is not set
+# CONFIG_IPV6_MULTIPLE_TABLES is not set
+CONFIG_IPV6_NDISC_NODETYPE=y
+# CONFIG_IPV6_OPTIMISTIC_DAD is not set
+# CONFIG_IPV6_PRIVACY is not set
+# CONFIG_IPV6_ROUTER_PREF is not set
+# CONFIG_IPV6_ROUTE_INFO is not set
+# CONFIG_IPV6_SIT is not set
+# CONFIG_IPV6_SIT_6RD is not set
+# CONFIG_IPV6_TUNNEL is not set
+# CONFIG_IPW2100 is not set
+# CONFIG_IPW2100_DEBUG is not set
+CONFIG_IPW2100_MONITOR=y
+# CONFIG_IPW2200 is not set
+# CONFIG_IPW2200_DEBUG is not set
+CONFIG_IPW2200_MONITOR=y
+# CONFIG_IPW2200_PROMISCUOUS is not set
+# CONFIG_IPW2200_QOS is not set
+# CONFIG_IPW2200_RADIOTAP is not set
+# CONFIG_IPWIRELESS is not set
+# CONFIG_IPX is not set
+CONFIG_IP_ADVANCED_ROUTER=y
+# CONFIG_IP_DCCP is not set
+CONFIG_IP_FIB_HASH=y
+# CONFIG_IP_FIB_TRIE is not set
+CONFIG_IP_MROUTE=y
+CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_MULTIPLE_TABLES=y
+# CONFIG_IP_NF_ARPFILTER is not set
+# CONFIG_IP_NF_ARPTABLES is not set
+# CONFIG_IP_NF_ARP_MANGLE is not set
+# CONFIG_IP_NF_FILTER is not set
+# CONFIG_IP_NF_IPTABLES is not set
+# CONFIG_IP_NF_MANGLE is not set
+# CONFIG_IP_NF_MATCH_ADDRTYPE is not set
+# CONFIG_IP_NF_MATCH_AH is not set
+# CONFIG_IP_NF_MATCH_ECN is not set
+# CONFIG_IP_NF_MATCH_TTL is not set
+# CONFIG_IP_NF_QUEUE is not set
+# CONFIG_IP_NF_RAW is not set
+# CONFIG_IP_NF_SECURITY is not set
+# CONFIG_IP_NF_TARGET_CLUSTERIP is not set
+# CONFIG_IP_NF_TARGET_ECN is not set
+# CONFIG_IP_NF_TARGET_LOG is not set
+# CONFIG_IP_NF_TARGET_MASQUERADE is not set
+# CONFIG_IP_NF_TARGET_NETMAP is not set
+# CONFIG_IP_NF_TARGET_REDIRECT is not set
+# CONFIG_IP_NF_TARGET_REJECT is not set
+# CONFIG_IP_NF_TARGET_TTL is not set
+# CONFIG_IP_NF_TARGET_ULOG is not set
+# CONFIG_IP_PIMSM_V1 is not set
+# CONFIG_IP_PIMSM_V2 is not set
+# CONFIG_IP_PNP is not set
+CONFIG_IP_ROUTE_MULTIPATH=y
+CONFIG_IP_ROUTE_VERBOSE=y
+# CONFIG_IP_SCTP is not set
+# CONFIG_IP_VS is not set
+# CONFIG_IRDA is not set
+# CONFIG_IRQSOFF_TRACER is not set
+# CONFIG_IR_CORE is not set
+# CONFIG_IR_IMON is not set
+# CONFIG_IR_JVC_DECODER is not set
+# CONFIG_IR_LIRC_CODEC is not set
+# CONFIG_IR_MCEUSB is not set
+# CONFIG_IR_NEC_DECODER is not set
+# CONFIG_IR_RC5_DECODER is not set
+# CONFIG_IR_RC5_SZ_DECODER is not set
+# CONFIG_IR_RC6_DECODER is not set
+# CONFIG_IR_SONY_DECODER is not set
+# CONFIG_IR_STREAMZAP is not set
+# CONFIG_ISCSI_BOOT_SYSFS is not set
+# CONFIG_SCSI_CXGB3_ISCSI is not set
+# CONFIG_SCSI_CXGB4_ISCSI is not set
+# CONFIG_ISCSI_TCP is not set
+CONFIG_ISDN=y
+# CONFIG_ISDN_AUDIO is not set
+# CONFIG_ISDN_CAPI is not set
+# CONFIG_ISDN_CAPI_CAPIDRV is not set
+# CONFIG_ISDN_DIVERSION is not set
+# CONFIG_ISDN_DRV_ACT2000 is not set
+# CONFIG_ISDN_DRV_AVMB1_VERBOSE_REASON is not set
+# CONFIG_ISDN_DRV_GIGASET is not set
+# CONFIG_ISDN_DRV_HISAX is not set
+# CONFIG_ISDN_DRV_ICN is not set
+# CONFIG_ISDN_DRV_LOOP is not set
+# CONFIG_ISDN_DRV_PCBIT is not set
+# CONFIG_ISDN_DRV_SC is not set
+# CONFIG_ISDN_I4L is not set
+# CONFIG_ISL29003 is not set
+# CONFIG_ISL29020 is not set
+# CONFIG_ISO9660_FS is not set
+# CONFIG_ISS4xx is not set
+# CONFIG_IWL3945 is not set
+# CONFIG_IWLAGN is not set
+# CONFIG_IWLWIFI is not set
+# CONFIG_IWMC3200TOP is not set
+# CONFIG_IXGB is not set
+# CONFIG_JBD is not set
+# CONFIG_JBD2_DEBUG is not set
+# CONFIG_JBD_DEBUG is not set
+# CONFIG_JFFS2_CMODE_FAVOURLZO is not set
+# CONFIG_JFFS2_CMODE_NONE is not set
+CONFIG_JFFS2_CMODE_PRIORITY=y
+# CONFIG_JFFS2_CMODE_SIZE is not set
+CONFIG_JFFS2_COMPRESSION_OPTIONS=y
+CONFIG_JFFS2_FS=y
+CONFIG_JFFS2_FS_DEBUG=0
+# CONFIG_JFFS2_FS_POSIX_ACL is not set
+# CONFIG_JFFS2_FS_SECURITY is not set
+# CONFIG_JFFS2_FS_WBUF_VERIFY is not set
+CONFIG_JFFS2_FS_WRITEBUFFER=y
+CONFIG_JFFS2_FS_XATTR=y
+CONFIG_JFFS2_LZMA=y
+# CONFIG_JFFS2_LZO is not set
+CONFIG_JFFS2_RTIME=y
+# CONFIG_JFFS2_RUBIN is not set
+CONFIG_JFFS2_SUMMARY=y
+# CONFIG_JFFS2_ZLIB is not set
+# CONFIG_JFS_DEBUG is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_JFS_POSIX_ACL is not set
+# CONFIG_JFS_SECURITY is not set
+# CONFIG_JFS_STATISTICS is not set
+# CONFIG_JME is not set
+CONFIG_JOLIET=y
+# CONFIG_JUMP_LABEL is not set
+# CONFIG_KALLSYMS is not set
+# CONFIG_KALLSYMS_ALL is not set
+# CONFIG_KALLSYMS_EXTRA_PASS is not set
+# CONFIG_KARMA_PARTITION is not set
+# CONFIG_KERNEL_BZIP2 is not set
+# CONFIG_KERNEL_GZIP is not set
+CONFIG_KERNEL_LZMA=y
+# CONFIG_KERNEL_LZO is not set
+# CONFIG_KERNEL_XZ is not set
+# CONFIG_KEXEC is not set
+# CONFIG_KEYBOARD_ADP5588 is not set
+# CONFIG_KEYBOARD_ADP5589 is not set
+# CONFIG_KEYBOARD_ATKBD is not set
+# CONFIG_KEYBOARD_GPIO_POLLED is not set
+# CONFIG_KEYBOARD_LKKBD is not set
+# CONFIG_KEYBOARD_LM8323 is not set
+# CONFIG_KEYBOARD_MATRIX is not set
+# CONFIG_KEYBOARD_MAX7359 is not set
+# CONFIG_KEYBOARD_MCS is not set
+# CONFIG_KEYBOARD_MPR121 is not set
+# CONFIG_KEYBOARD_NEWTON is not set
+# CONFIG_KEYBOARD_OPENCORES is not set
+# CONFIG_KEYBOARD_QT1070 is not set
+# CONFIG_KEYBOARD_QT2160 is not set
+# CONFIG_KEYBOARD_STOWAWAY is not set
+# CONFIG_KEYBOARD_SUNKBD is not set
+# CONFIG_KEYBOARD_TCA6416 is not set
+# CONFIG_KEYBOARD_XTKBD is not set
+# CONFIG_KEYS is not set
+# CONFIG_KGDB is not set
+# CONFIG_KMEMCHECK is not set
+# CONFIG_KPROBES is not set
+# CONFIG_KS8842 is not set
+# CONFIG_KS8851 is not set
+# CONFIG_KS8851_MLL is not set
+# CONFIG_KSM is not set
+# CONFIG_KSZ884X_PCI is not set
+# CONFIG_KVM_GUEST is not set
+# CONFIG_L2TP is not set
+# CONFIG_L2TP_ETH is not set
+# CONFIG_L2TP_IP is not set
+# CONFIG_L2TP_V3 is not set
+# CONFIG_LANMEDIA is not set
+# CONFIG_LAPB is not set
+# CONFIG_LASAT is not set
+# CONFIG_LATENCYTOP is not set
+CONFIG_LBDAF=y
+# CONFIG_LDM_PARTITION is not set
+# CONFIG_LEDS_BD2802 is not set
+CONFIG_LEDS_CLASS=y
+# CONFIG_LEDS_DAC124S085 is not set
+CONFIG_LEDS_GPIO_PLATFORM=y
+# CONFIG_LEDS_INTEL_SS4200 is not set
+# CONFIG_LEDS_LM3530 is not set
+# CONFIG_LEDS_LP3944 is not set
+# CONFIG_LEDS_LP5521 is not set
+# CONFIG_LEDS_LP5523 is not set
+# CONFIG_LEDS_LT3593 is not set
+# CONFIG_LEDS_PCA9532 is not set
+# CONFIG_LEDS_PCA955X is not set
+CONFIG_LEDS_TRIGGERS=y
+# CONFIG_LEDS_TRIGGER_BACKLIGHT is not set
+CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
+# CONFIG_LEDS_TRIGGER_GPIO is not set
+# CONFIG_LEDS_TRIGGER_HEARTBEAT is not set
+# CONFIG_LEDS_TRIGGER_IDE_DISK is not set
+# CONFIG_LEDS_TRIGGER_MORSE is not set
+CONFIG_LEDS_TRIGGER_NETDEV=y
+CONFIG_LEDS_TRIGGER_TIMER=y
+# CONFIG_LEDS_TRIGGER_USBDEV is not set
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_LIB80211 is not set
+# CONFIG_LIB80211_CRYPT_CCMP is not set
+# CONFIG_LIB80211_CRYPT_TKIP is not set
+# CONFIG_LIB80211_CRYPT_WEP is not set
+# CONFIG_LIB80211_DEBUG is not set
+# CONFIG_LIBCRC32C is not set
+# CONFIG_LIBERTAS is not set
+# CONFIG_LIBERTAS_THINFIRM is not set
+# CONFIG_LIBERTAS_USB is not set
+# CONFIG_LIBFC is not set
+# CONFIG_LIBFCOE is not set
+# CONFIG_LIBIPW_DEBUG is not set
+# CONFIG_LINE6_USB is not set
+# CONFIG_LIRC_STAGING is not set
+# CONFIG_LKDTM is not set
+CONFIG_LLC=y
+# CONFIG_LLC2 is not set
+CONFIG_LOCALVERSION=""
+# CONFIG_LOCALVERSION_AUTO is not set
+# CONFIG_LOCKD is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_LOCKD_V4=y
+# CONFIG_LOCKUP_DETECTOR is not set
+# CONFIG_LOCK_STAT is not set
+# CONFIG_LOGFS is not set
+# CONFIG_LOGIRUMBLEPAD2_FF is not set
+# CONFIG_LOGITECH_FF is not set
+# CONFIG_LOGO is not set
+CONFIG_LOG_BUF_SHIFT=14
+# CONFIG_LOONGSON_MC146818 is not set
+# CONFIG_LPC_SCH is not set
+# CONFIG_LP_CONSOLE is not set
+# CONFIG_LSI_ET1011C_PHY is not set
+# CONFIG_LTPC is not set
+# CONFIG_LXT_PHY is not set
+CONFIG_LZMA_COMPRESS=y
+CONFIG_LZMA_DECOMPRESS=y
+# CONFIG_MAC80211 is not set
+# CONFIG_MACH_DECSTATION is not set
+# CONFIG_MACH_JAZZ is not set
+# CONFIG_MACH_JZ4740 is not set
+# CONFIG_MACH_LOONGSON is not set
+# CONFIG_MACH_NO_WESTBRIDGE is not set
+# CONFIG_MACH_TX39XX is not set
+# CONFIG_MACH_TX49XX is not set
+# CONFIG_MACH_VR41XX is not set
+# CONFIG_MACINTOSH_DRIVERS is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_MACVTAP is not set
+# CONFIG_MAC_EMUMOUSEBTN is not set
+# CONFIG_MAC_PARTITION is not set
+# CONFIG_MAGIC_SYSRQ is not set
+# CONFIG_MARVELL_PHY is not set
+# CONFIG_MAX63XX_WATCHDOG is not set
+# CONFIG_MD is not set
+# CONFIG_MDIO_BITBANG is not set
+# CONFIG_MEDIA_ATTACH is not set
+# CONFIG_MEDIA_CONTROLLER is not set
+# CONFIG_MEDIA_SUPPORT is not set
+# CONFIG_MEDIA_TUNER_CUSTOMISE is not set
+# CONFIG_MEGARAID_LEGACY is not set
+# CONFIG_MEGARAID_NEWGEN is not set
+# CONFIG_MEGARAID_SAS is not set
+# CONFIG_MEMORY_FAILURE is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_MFD_88PM860X is not set
+# CONFIG_MFD_ASIC3 is not set
+# CONFIG_MFD_CORE is not set
+# CONFIG_MFD_CS5535 is not set
+# CONFIG_MFD_JANZ_CMODIO is not set
+# CONFIG_MFD_MAX8925 is not set
+# CONFIG_MFD_MAX8998 is not set
+# CONFIG_MFD_MC13783 is not set
+# CONFIG_MFD_MC13XXX is not set
+# CONFIG_MFD_PCF50633 is not set
+# CONFIG_MFD_RDC321X is not set
+# CONFIG_MFD_SM501 is not set
+# CONFIG_MFD_STMPE is not set
+CONFIG_MFD_SUPPORT=y
+# CONFIG_MFD_TC35892 is not set
+# CONFIG_MFD_TC3589X is not set
+# CONFIG_MFD_TC6387XB is not set
+# CONFIG_MFD_TC6393XB is not set
+# CONFIG_MFD_TIMBERDALE is not set
+# CONFIG_MFD_TMIO is not set
+# CONFIG_MFD_TPS6586X is not set
+# CONFIG_MFD_VX855 is not set
+# CONFIG_MFD_WM831X is not set
+# CONFIG_MFD_WM831X_I2C is not set
+# CONFIG_MFD_WM831X_SPI is not set
+# CONFIG_MFD_WM8350_I2C is not set
+# CONFIG_MFD_WM8400 is not set
+# CONFIG_MFD_WM8994 is not set
+# CONFIG_MFD_WL1273_CORE is not set
+# CONFIG_MG_DISK is not set
+# CONFIG_MICREL_PHY is not set
+# CONFIG_MIGRATION is not set
+CONFIG_MII=y
+# CONFIG_MIKROTIK_RB532 is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_MINIX_SUBPARTITION is not set
+# CONFIG_MIPS_ALCHEMY is not set
+# CONFIG_MIPS_COBALT is not set
+# CONFIG_MIPS_FPU_EMU is not set
+# CONFIG_MIPS_MALTA is not set
+# CONFIG_MIPS_SIM is not set
+CONFIG_MISC_DEVICES=y
+CONFIG_MISC_FILESYSTEMS=y
+# CONFIG_MISDN is not set
+# CONFIG_MISDN_AVMFRITZ is not set
+# CONFIG_MISDN_HFCPCI is not set
+# CONFIG_MISDN_HFCUSB is not set
+# CONFIG_MISDN_INFINEON is not set
+# CONFIG_MISDN_NETJET is not set
+# CONFIG_MISDN_SPEEDFAX is not set
+# CONFIG_MISDN_W6692 is not set
+# CONFIG_MKISS is not set
+# CONFIG_MMC is not set
+# CONFIG_MMC_ARMMMCI is not set
+# CONFIG_MMC_BLOCK is not set
+CONFIG_MMC_BLOCK_BOUNCE=y
+CONFIG_MMC_BLOCK_MINORS=8
+# CONFIG_MMC_CB710 is not set
+# CONFIG_MMC_CLKGATE is not set
+# CONFIG_MMC_DEBUG is not set
+# CONFIG_MMC_DW is not set
+# CONFIG_MMC_MVSDIO is not set
+# CONFIG_MMC_S3C is not set
+# CONFIG_MMC_SDHCI is not set
+# CONFIG_MMC_SDRICOH_CS is not set
+# CONFIG_MMC_SPI is not set
+# CONFIG_MMC_TEST is not set
+# CONFIG_MMC_UNSAFE_RESUME is not set
+# CONFIG_MMC_USHC is not set
+# CONFIG_MMC_VIA_SDMMC is not set
+# CONFIG_MMC_VUB300 is not set
+CONFIG_MMU=y
+CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MOUSE_APPLETOUCH is not set
+# CONFIG_MOUSE_GPIO is not set
+# CONFIG_MOUSE_INPORT is not set
+# CONFIG_MOUSE_LOGIBM is not set
+# CONFIG_MOUSE_PC110PAD is not set
+# CONFIG_MOUSE_PS2_SENTELIC is not set
+# CONFIG_MOUSE_SYNAPTICS_I2C is not set
+# CONFIG_MSDOS_FS is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_MSI_BITMAP_SELFTEST is not set
+CONFIG_MTD=y
+# CONFIG_MTD_ABSENT is not set
+# CONFIG_MTD_AFS_PARTS is not set
+# CONFIG_MTD_ALAUDA is not set
+# CONFIG_MTD_AR7_PARTS is not set
+# CONFIG_MTD_ARM_INTEGRATOR is not set
+CONFIG_MTD_BLKDEVS=y
+CONFIG_MTD_BLOCK=y
+# CONFIG_MTD_BLOCK2MTD is not set
+CONFIG_MTD_CFI=y
+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
+CONFIG_MTD_CFI_AMDSTD=y
+# CONFIG_MTD_CFI_BE_BYTE_SWAP is not set
+CONFIG_MTD_CFI_I1=y
+CONFIG_MTD_CFI_I2=y
+# CONFIG_MTD_CFI_I4 is not set
+# CONFIG_MTD_CFI_I8 is not set
+CONFIG_MTD_CFI_INTELEXT=y
+# CONFIG_MTD_CFI_LE_BYTE_SWAP is not set
+CONFIG_MTD_CFI_NOSWAP=y
+# CONFIG_MTD_CFI_STAA is not set
+CONFIG_MTD_CFI_UTIL=y
+CONFIG_MTD_CHAR=y
+# CONFIG_MTD_CMDLINE_PARTS is not set
+CONFIG_MTD_COMPLEX_MAPPINGS=y
+# CONFIG_MTD_CONCAT is not set
+# CONFIG_MTD_DATAFLASH is not set
+# CONFIG_MTD_DEBUG is not set
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOC2001PLUS is not set
+CONFIG_MTD_GEN_PROBE=y
+# CONFIG_MTD_GPIO_ADDR is not set
+# CONFIG_MTD_INTEL_VR_NOR is not set
+# CONFIG_MTD_JEDECPROBE is not set
+# CONFIG_MTD_LPDDR is not set
+# CONFIG_MTD_M25P80 is not set
+CONFIG_MTD_MAP_BANK_WIDTH_1=y
+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
+CONFIG_MTD_MAP_BANK_WIDTH_2=y
+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
+CONFIG_MTD_MAP_BANK_WIDTH_4=y
+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
+# CONFIG_MTD_MTDRAM is not set
+# CONFIG_MTD_MYLOADER_PARTS is not set
+# CONFIG_MTD_NAND is not set
+# CONFIG_MTD_NAND_CAFE is not set
+# CONFIG_MTD_NAND_DENALI is not set
+CONFIG_MTD_NAND_DENALI_SCRATCH_REG_ADDR=0xff108018
+# CONFIG_MTD_NAND_DISKONCHIP is not set
+# CONFIG_MTD_NAND_ECC_SMC is not set
+# CONFIG_MTD_NAND_GPIO is not set
+CONFIG_MTD_NAND_IDS=y
+# CONFIG_MTD_NAND_MUSEUM_IDS is not set
+# CONFIG_MTD_NAND_NANDSIM is not set
+# CONFIG_MTD_NAND_PLATFORM is not set
+# CONFIG_MTD_NAND_RICOH is not set
+# CONFIG_MTD_NAND_VERIFY_WRITE is not set
+# CONFIG_MTD_ONENAND is not set
+# CONFIG_MTD_OOPS is not set
+# CONFIG_MTD_OTP is not set
+CONFIG_MTD_PARTITIONS=y
+# CONFIG_MTD_PCI is not set
+# CONFIG_MTD_PCMCIA is not set
+# CONFIG_MTD_PHRAM is not set
+# CONFIG_MTD_PHYSMAP is not set
+# CONFIG_MTD_PHYSMAP_COMPAT is not set
+# CONFIG_MTD_PLATRAM is not set
+# CONFIG_MTD_LATCH_ADDR is not set
+# CONFIG_MTD_PMC551 is not set
+# CONFIG_MTD_RAM is not set
+CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK=-1
+# CONFIG_MTD_REDBOOT_PARTS is not set
+# CONFIG_MTD_REDBOOT_PARTS_READONLY is not set
+# CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED is not set
+# CONFIG_MTD_ROM is not set
+CONFIG_MTD_ROOTFS_ROOT_DEV=y
+CONFIG_MTD_ROOTFS_SPLIT=y
+# CONFIG_MTD_SLRAM is not set
+# CONFIG_MTD_SST25L is not set
+# CONFIG_MTD_SWAP is not set
+# CONFIG_MTD_TESTS is not set
+# CONFIG_MTD_UBI is not set
+# CONFIG_MUTEX_SPIN_ON_OWNER is not set
+# CONFIG_MV643XX_ETH is not set
+# CONFIG_MVSWITCH_PHY is not set
+# CONFIG_MWAVE is not set
+# CONFIG_MWL8K is not set
+# CONFIG_MYRI10GE is not set
+# CONFIG_NAMESPACES is not set
+# CONFIG_NATIONAL_PHY is not set
+# CONFIG_NATSEMI is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_NE2K_PCI is not set
+# CONFIG_NEC_MARKEINS is not set
+CONFIG_NET=y
+# CONFIG_NETCONSOLE is not set
+CONFIG_NETDEVICES=y
+CONFIG_NETDEV_1000=y
+# CONFIG_NETDEV_10000 is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_NETFILTER_ADVANCED is not set
+# CONFIG_NETFILTER_DEBUG is not set
+# CONFIG_NETFILTER_NETLINK is not set
+# CONFIG_NETFILTER_NETLINK_LOG is not set
+# CONFIG_NETFILTER_NETLINK_QUEUE is not set
+# CONFIG_NETFILTER_XT_TARGET_AUDIT is not set
+# CONFIG_NETFILTER_TPROXY is not set
+# CONFIG_NETFILTER_XTABLES is not set
+# CONFIG_NETFILTER_XT_CONNMARK is not set
+# CONFIG_NETFILTER_XT_MARK is not set
+# CONFIG_NETFILTER_XT_MATCH_ADDRTYPE is not set
+# CONFIG_NETFILTER_XT_MATCH_CLUSTER is not set
+# CONFIG_NETFILTER_XT_MATCH_COMMENT is not set
+# CONFIG_NETFILTER_XT_MATCH_CONNBYTES is not set
+# CONFIG_NETFILTER_XT_MATCH_CONNLIMIT is not set
+# CONFIG_NETFILTER_XT_MATCH_CONNMARK is not set
+# CONFIG_NETFILTER_XT_MATCH_CONNTRACK is not set
+# CONFIG_NETFILTER_XT_MATCH_CPU is not set
+# CONFIG_NETFILTER_XT_MATCH_DEVGROUP is not set
+# CONFIG_NETFILTER_XT_MATCH_DCCP is not set
+# CONFIG_NETFILTER_XT_MATCH_DSCP is not set
+# CONFIG_NETFILTER_XT_MATCH_ESP is not set
+# CONFIG_NETFILTER_XT_MATCH_HASHLIMIT is not set
+# CONFIG_NETFILTER_XT_MATCH_HELPER is not set
+# CONFIG_NETFILTER_XT_MATCH_HL is not set
+# CONFIG_NETFILTER_XT_MATCH_IPRANGE is not set
+# CONFIG_NETFILTER_XT_MATCH_LAYER7 is not set
+# CONFIG_NETFILTER_XT_MATCH_LAYER7_DEBUG is not set
+# CONFIG_NETFILTER_XT_MATCH_LENGTH is not set
+# CONFIG_NETFILTER_XT_MATCH_LIMIT is not set
+# CONFIG_NETFILTER_XT_MATCH_MAC is not set
+# CONFIG_NETFILTER_XT_MATCH_MARK is not set
+# CONFIG_NETFILTER_XT_MATCH_MULTIPORT is not set
+# CONFIG_NETFILTER_XT_MATCH_OSF is not set
+# CONFIG_NETFILTER_XT_MATCH_OWNER is not set
+# CONFIG_NETFILTER_XT_MATCH_PHYSDEV is not set
+# CONFIG_NETFILTER_XT_MATCH_PKTTYPE is not set
+# CONFIG_NETFILTER_XT_MATCH_POLICY is not set
+# CONFIG_NETFILTER_XT_MATCH_QUOTA is not set
+# CONFIG_NETFILTER_XT_MATCH_RATEEST is not set
+# CONFIG_NETFILTER_XT_MATCH_REALM is not set
+# CONFIG_NETFILTER_XT_MATCH_RECENT is not set
+# CONFIG_NETFILTER_XT_MATCH_SCTP is not set
+# CONFIG_NETFILTER_XT_MATCH_SOCKET is not set
+# CONFIG_NETFILTER_XT_MATCH_STATE is not set
+# CONFIG_NETFILTER_XT_MATCH_STATISTIC is not set
+# CONFIG_NETFILTER_XT_MATCH_STRING is not set
+# CONFIG_NETFILTER_XT_MATCH_TCPMSS is not set
+# CONFIG_NETFILTER_XT_MATCH_TIME is not set
+# CONFIG_NETFILTER_XT_MATCH_U32 is not set
+# CONFIG_NETFILTER_XT_TARGET_CHECKSUM is not set
+# CONFIG_NETFILTER_XT_TARGET_CLASSIFY is not set
+# CONFIG_NETFILTER_XT_TARGET_CONNMARK is not set
+# CONFIG_NETFILTER_XT_TARGET_CT is not set
+# CONFIG_NETFILTER_XT_TARGET_DSCP is not set
+# CONFIG_NETFILTER_XT_TARGET_HL is not set
+# CONFIG_NETFILTER_XT_TARGET_IDLETIMER is not set
+# CONFIG_NETFILTER_XT_TARGET_LED is not set
+# CONFIG_NETFILTER_XT_TARGET_MARK is not set
+# CONFIG_NETFILTER_XT_TARGET_NFLOG is not set
+# CONFIG_NETFILTER_XT_TARGET_NFQUEUE is not set
+# CONFIG_NETFILTER_XT_TARGET_NOTRACK is not set
+# CONFIG_NETFILTER_XT_TARGET_RATEEST is not set
+# CONFIG_NETFILTER_XT_TARGET_TCPMSS is not set
+# CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP is not set
+# CONFIG_NETFILTER_XT_TARGET_TEE is not set
+# CONFIG_NETFILTER_XT_TARGET_TPROXY is not set
+# CONFIG_NETFILTER_XT_TARGET_TRACE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NETROM is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETXEN_NIC is not set
+# CONFIG_NET_9P is not set
+# CONFIG_NET_ACT_CSUM is not set
+# CONFIG_NET_ACT_GACT is not set
+# CONFIG_NET_ACT_IPT is not set
+# CONFIG_NET_ACT_MIRRED is not set
+# CONFIG_NET_ACT_NAT is not set
+# CONFIG_NET_ACT_PEDIT is not set
+# CONFIG_NET_ACT_POLICE is not set
+# CONFIG_NET_ACT_SIMP is not set
+# CONFIG_NET_ACT_SKBEDIT is not set
+CONFIG_NET_CLS=y
+# CONFIG_NET_CLS_ACT is not set
+# CONFIG_NET_CLS_BASIC is not set
+# CONFIG_NET_CLS_FLOW is not set
+# CONFIG_NET_CLS_FW is not set
+CONFIG_NET_CLS_IND=y
+# CONFIG_NET_CLS_ROUTE4 is not set
+# CONFIG_NET_CLS_RSVP is not set
+# CONFIG_NET_CLS_RSVP6 is not set
+# CONFIG_NET_CLS_TCINDEX is not set
+# CONFIG_NET_CLS_U32 is not set
+# CONFIG_NET_DROP_MONITOR is not set
+# CONFIG_NET_DSA is not set
+# CONFIG_NET_DSA_MV88E6123_61_65 is not set
+# CONFIG_NET_DSA_MV88E6131 is not set
+# CONFIG_NET_DSA_MV88E6XXX is not set
+# CONFIG_NET_DSA_MV88E6XXX_NEED_PPU is not set
+# CONFIG_NET_DSA_TAG_DSA is not set
+# CONFIG_NET_DSA_TAG_EDSA is not set
+# CONFIG_NET_EMATCH is not set
+# CONFIG_NET_EMATCH_CMP is not set
+# CONFIG_NET_EMATCH_META is not set
+# CONFIG_NET_EMATCH_NBYTE is not set
+CONFIG_NET_EMATCH_STACK=32
+# CONFIG_NET_EMATCH_TEXT is not set
+# CONFIG_NET_EMATCH_U32 is not set
+CONFIG_NET_ETHERNET=y
+# CONFIG_NET_FC is not set
+# CONFIG_NET_IPGRE is not set
+CONFIG_NET_IPGRE_BROADCAST=y
+# CONFIG_NET_IPGRE_DEMUX is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_ISA is not set
+# CONFIG_NET_KEY is not set
+# CONFIG_NET_KEY_MIGRATE is not set
+CONFIG_NET_PCI=y
+# CONFIG_NET_PCMCIA is not set
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_NET_POCKET is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+# CONFIG_NET_SB1000 is not set
+CONFIG_NET_SCHED=y
+# CONFIG_NET_SCH_ATM is not set
+# CONFIG_NET_SCH_CBQ is not set
+# CONFIG_NET_SCH_CHOKE is not set
+# CONFIG_NET_SCH_DRR is not set
+# CONFIG_NET_SCH_DSMARK is not set
+# CONFIG_NET_SCH_ESFQ is not set
+CONFIG_NET_SCH_ESFQ_NFCT=y
+CONFIG_NET_SCH_FIFO=y
+# CONFIG_NET_SCH_GRED is not set
+# CONFIG_NET_SCH_HFSC is not set
+# CONFIG_NET_SCH_HTB is not set
+# CONFIG_NET_SCH_INGRESS is not set
+# CONFIG_NET_SCH_MULTIQ is not set
+# CONFIG_NET_SCH_MQPRIO is not set
+# CONFIG_NET_SCH_NETEM is not set
+# CONFIG_NET_SCH_PRIO is not set
+# CONFIG_NET_SCH_QFQ is not set
+# CONFIG_NET_SCH_RED is not set
+# CONFIG_NET_SCH_SFB is not set
+# CONFIG_NET_SCH_SFQ is not set
+# CONFIG_NET_SCH_TBF is not set
+# CONFIG_NET_SCH_TEQL is not set
+# CONFIG_NET_TULIP is not set
+# CONFIG_NET_VENDOR_3COM is not set
+CONFIG_NEW_LEDS=y
+# CONFIG_NFC_DEVICES is not set
+# CONFIG_NFSD is not set
+# CONFIG_NFSD_DEPRECATED is not set
+# CONFIG_NFSD_V2_ACL is not set
+CONFIG_NFSD_V3=y
+# CONFIG_NFSD_V3_ACL is not set
+# CONFIG_NFSD_V4 is not set
+# CONFIG_NFS_ACL_SUPPORT is not set
+CONFIG_NFS_COMMON=y
+# CONFIG_NFS_FS is not set
+CONFIG_NFS_V3=y
+# CONFIG_NFS_V3_ACL is not set
+# CONFIG_NFS_V4 is not set
+# CONFIG_NFS_V4_1 is not set
+# CONFIG_NFTL is not set
+# CONFIG_NF_CONNTRACK is not set
+# CONFIG_NF_CONNTRACK_AMANDA is not set
+# CONFIG_NF_CONNTRACK_EVENTS is not set
+# CONFIG_NF_CONNTRACK_FTP is not set
+# CONFIG_NF_CONNTRACK_H323 is not set
+# CONFIG_NF_CONNTRACK_IPV4 is not set
+# CONFIG_NF_CONNTRACK_IPV6 is not set
+# CONFIG_NF_CONNTRACK_IRC is not set
+# CONFIG_NF_CONNTRACK_MARK is not set
+# CONFIG_NF_CONNTRACK_NETBIOS_NS is not set
+# CONFIG_NF_CONNTRACK_PPTP is not set
+# CONFIG_NF_CONNTRACK_PROC_COMPAT is not set
+# CONFIG_NF_CONNTRACK_RTSP is not set
+# CONFIG_NF_CONNTRACK_SANE is not set
+# CONFIG_NF_CONNTRACK_SIP is not set
+# CONFIG_NF_CONNTRACK_TFTP is not set
+# CONFIG_NF_CONNTRACK_TIMESTAMP is not set
+# CONFIG_NF_CONNTRACK_SNMP is not set
+# CONFIG_NF_CT_NETLINK is not set
+# CONFIG_NF_CT_PROTO_DCCP is not set
+# CONFIG_NF_CT_PROTO_GRE is not set
+# CONFIG_NF_CT_PROTO_SCTP is not set
+# CONFIG_NF_CT_PROTO_UDPLITE is not set
+# CONFIG_NF_DEFRAG_IPV4 is not set
+# CONFIG_NF_NAT is not set
+# CONFIG_NF_NAT_AMANDA is not set
+# CONFIG_NF_NAT_FTP is not set
+# CONFIG_NF_NAT_H323 is not set
+# CONFIG_NF_NAT_IRC is not set
+# CONFIG_NF_NAT_NEEDED is not set
+# CONFIG_NF_NAT_PPTP is not set
+# CONFIG_NF_NAT_PROTO_GRE is not set
+# CONFIG_NF_NAT_RTSP is not set
+# CONFIG_NF_NAT_SIP is not set
+# CONFIG_NF_NAT_SNMP_BASIC is not set
+# CONFIG_NF_NAT_TFTP is not set
+# CONFIG_NILFS2_FS is not set
+CONFIG_NLATTR=y
+# CONFIG_NLM_XLR_BOARD is not set
+# CONFIG_NLS is not set
+# CONFIG_NLS_ASCII is not set
+# CONFIG_NLS_CODEPAGE_1250 is not set
+# CONFIG_NLS_CODEPAGE_1251 is not set
+# CONFIG_NLS_CODEPAGE_437 is not set
+# CONFIG_NLS_CODEPAGE_737 is not set
+# CONFIG_NLS_CODEPAGE_775 is not set
+# CONFIG_NLS_CODEPAGE_850 is not set
+# CONFIG_NLS_CODEPAGE_852 is not set
+# CONFIG_NLS_CODEPAGE_855 is not set
+# CONFIG_NLS_CODEPAGE_857 is not set
+# CONFIG_NLS_CODEPAGE_860 is not set
+# CONFIG_NLS_CODEPAGE_861 is not set
+# CONFIG_NLS_CODEPAGE_862 is not set
+# CONFIG_NLS_CODEPAGE_863 is not set
+# CONFIG_NLS_CODEPAGE_864 is not set
+# CONFIG_NLS_CODEPAGE_865 is not set
+# CONFIG_NLS_CODEPAGE_866 is not set
+# CONFIG_NLS_CODEPAGE_869 is not set
+# CONFIG_NLS_CODEPAGE_874 is not set
+# CONFIG_NLS_CODEPAGE_932 is not set
+# CONFIG_NLS_CODEPAGE_936 is not set
+# CONFIG_NLS_CODEPAGE_949 is not set
+# CONFIG_NLS_CODEPAGE_950 is not set
+CONFIG_NLS_DEFAULT="iso8859-1"
+# CONFIG_NLS_ISO8859_1 is not set
+# CONFIG_NLS_ISO8859_13 is not set
+# CONFIG_NLS_ISO8859_14 is not set
+# CONFIG_NLS_ISO8859_15 is not set
+# CONFIG_NLS_ISO8859_2 is not set
+# CONFIG_NLS_ISO8859_3 is not set
+# CONFIG_NLS_ISO8859_4 is not set
+# CONFIG_NLS_ISO8859_5 is not set
+# CONFIG_NLS_ISO8859_6 is not set
+# CONFIG_NLS_ISO8859_7 is not set
+# CONFIG_NLS_ISO8859_8 is not set
+# CONFIG_NLS_ISO8859_9 is not set
+# CONFIG_NLS_KOI8_R is not set
+# CONFIG_NLS_KOI8_U is not set
+# CONFIG_NLS_UTF8 is not set
+# CONFIG_NOP_USB_XCEIV is not set
+# CONFIG_NORTEL_HERMES is not set
+# CONFIG_NOZOMI is not set
+# CONFIG_NO_BOOTMEM is not set
+# CONFIG_NO_HZ is not set
+# CONFIG_NO_IOPORT is not set
+# CONFIG_NS83820 is not set
+# CONFIG_NTFS_DEBUG is not set
+# CONFIG_NTFS_FS is not set
+# CONFIG_NTFS_RW is not set
+# CONFIG_NVRAM is not set
+# CONFIG_NV_TCO is not set
+# CONFIG_NXP_STB220 is not set
+# CONFIG_NXP_STB225 is not set
+# CONFIG_N_GSM is not set
+# CONFIG_OABI_COMPAT is not set
+# CONFIG_OCFS2_FS is not set
+# CONFIG_OCF_BENCH is not set
+# CONFIG_OCF_C7108 is not set
+# CONFIG_OCF_CRYPTOCTEON is not set
+# CONFIG_OCF_EP80579 is not set
+# CONFIG_OCF_HIFN is not set
+# CONFIG_OCF_HIFNHIPP is not set
+# CONFIG_OCF_IXP4XX is not set
+# CONFIG_OCF_KIRKWOOD is not set
+# CONFIG_OCF_OCF is not set
+# CONFIG_OCF_OCFNULL is not set
+# CONFIG_OCF_SAFE is not set
+# CONFIG_OCF_TALITOS is not set
+# CONFIG_OC_ETM is not set
+# CONFIG_OMFS_FS is not set
+# CONFIG_ORION_WATCHDOG is not set
+# CONFIG_OSF_PARTITION is not set
+CONFIG_OVERLAYFS_FS=y
+# CONFIG_P54_COMMON is not set
+CONFIG_PACKET=y
+# CONFIG_PAGE_POISONING is not set
+# CONFIG_PAGE_SIZE_16KB is not set
+# CONFIG_PAGE_SIZE_32KB is not set
+CONFIG_PAGE_SIZE_4KB=y
+# CONFIG_PAGE_SIZE_64KB is not set
+# CONFIG_PAGE_SIZE_8KB is not set
+# CONFIG_PANEL is not set
+# CONFIG_PANTHERLORD_FF is not set
+# CONFIG_PARPORT is not set
+# CONFIG_PARPORT_1284 is not set
+# CONFIG_PARPORT_AX88796 is not set
+# CONFIG_PARPORT_PC is not set
+CONFIG_PARTITION_ADVANCED=y
+# CONFIG_PATA_ALI is not set
+# CONFIG_PATA_AMD is not set
+# CONFIG_PATA_ARASAN_CF is not set
+# CONFIG_PATA_ARTOP is not set
+# CONFIG_PATA_ATIIXP is not set
+# CONFIG_PATA_ATP867X is not set
+# CONFIG_PATA_CMD640_PCI is not set
+# CONFIG_PATA_CMD64X is not set
+# CONFIG_PATA_CS5520 is not set
+# CONFIG_PATA_CS5530 is not set
+# CONFIG_PATA_CS5535 is not set
+# CONFIG_PATA_CS5536 is not set
+# CONFIG_PATA_CYPRESS is not set
+# CONFIG_PATA_EFAR is not set
+# CONFIG_PATA_HPT366 is not set
+# CONFIG_PATA_HPT37X is not set
+# CONFIG_PATA_HPT3X2N is not set
+# CONFIG_PATA_HPT3X3 is not set
+# CONFIG_PATA_ISAPNP is not set
+# CONFIG_PATA_IT8213 is not set
+# CONFIG_PATA_IT821X is not set
+# CONFIG_PATA_JMICRON is not set
+# CONFIG_PATA_LEGACY is not set
+# CONFIG_PATA_MARVELL is not set
+# CONFIG_PATA_MPIIX is not set
+# CONFIG_PATA_NETCELL is not set
+# CONFIG_PATA_NINJA32 is not set
+# CONFIG_PATA_NS87410 is not set
+# CONFIG_PATA_NS87415 is not set
+# CONFIG_PATA_OLDPIIX is not set
+# CONFIG_PATA_OPTI is not set
+# CONFIG_PATA_OPTIDMA is not set
+# CONFIG_PATA_PCMCIA is not set
+# CONFIG_PATA_PDC2027X is not set
+# CONFIG_PATA_PDC_OLD is not set
+# CONFIG_PATA_PLATFORM is not set
+# CONFIG_PATA_QDI is not set
+# CONFIG_PATA_RADISYS is not set
+# CONFIG_PATA_RDC is not set
+# CONFIG_PATA_RZ1000 is not set
+# CONFIG_PATA_SC1200 is not set
+# CONFIG_PATA_SCH is not set
+# CONFIG_PATA_SERVERWORKS is not set
+# CONFIG_PATA_SIL680 is not set
+# CONFIG_PATA_SIS is not set
+# CONFIG_PATA_TOSHIBA is not set
+# CONFIG_PATA_TRIFLEX is not set
+# CONFIG_PATA_VIA is not set
+# CONFIG_PATA_WINBOND is not set
+# CONFIG_PATA_WINBOND_VLB is not set
+# CONFIG_PC300TOO is not set
+# CONFIG_PCCARD is not set
+# CONFIG_PCH_GBE is not set
+# CONFIG_PCH_PHUB is not set
+# CONFIG_PCI200SYN is not set
+# CONFIG_PCIEAER_INJECT is not set
+# CONFIG_PCIEASPM is not set
+# CONFIG_PCIE_ECRC is not set
+# CONFIG_PCIPCWATCHDOG is not set
+# CONFIG_PCI_ATMEL is not set
+# CONFIG_PCI_CNB20LE_QUIRK is not set
+# CONFIG_PCI_DEBUG is not set
+# CONFIG_PCI_DISABLE_COMMON_QUIRKS is not set
+# CONFIG_PCI_HERMES is not set
+# CONFIG_PCI_IOV is not set
+# CONFIG_PCI_MSI is not set
+CONFIG_PCI_QUIRKS=y
+# CONFIG_PCI_STUB is not set
+CONFIG_PCI_SYSCALL=y
+# CONFIG_PCMCIA is not set
+# CONFIG_PCMCIA_AHA152X is not set
+# CONFIG_PCMCIA_ATMEL is not set
+# CONFIG_PCMCIA_DEBUG is not set
+# CONFIG_PCMCIA_FDOMAIN is not set
+# CONFIG_PCMCIA_HERMES is not set
+# CONFIG_PCMCIA_LOAD_CIS is not set
+# CONFIG_PCMCIA_NINJA_SCSI is not set
+# CONFIG_PCMCIA_QLOGIC is not set
+# CONFIG_PCMCIA_RAYCS is not set
+# CONFIG_PCMCIA_SPECTRUM is not set
+# CONFIG_PCMCIA_SYM53C500 is not set
+# CONFIG_PCMCIA_WL3501 is not set
+# CONFIG_PCMCIA_XIRCOM is not set
+# CONFIG_PCNET32 is not set
+# CONFIG_PCSPKR_PLATFORM is not set
+# CONFIG_PD6729 is not set
+# CONFIG_PDC_ADMA is not set
+# CONFIG_PERF_COUNTERS is not set
+# CONFIG_PERF_EVENTS is not set
+# CONFIG_PHANTOM is not set
+# CONFIG_PHONE is not set
+# CONFIG_PHONET is not set
+# CONFIG_PHYLIB is not set
+# CONFIG_PHYS_ADDR_T_64BIT is not set
+# CONFIG_PID_NS is not set
+# CONFIG_PLAT_SPEAR is not set
+# CONFIG_PLIP is not set
+# CONFIG_PLX_HERMES is not set
+# CONFIG_PM is not set
+# CONFIG_PM_RUNTIME is not set
+# CONFIG_PMBUS is not set
+# CONFIG_PMC_MSP is not set
+# CONFIG_PMC_YOSEMITE is not set
+# CONFIG_PMIC_ADP5520 is not set
+# CONFIG_PMIC_DA903X is not set
+# CONFIG_PNX8550_JBS is not set
+# CONFIG_PNX8550_STB810 is not set
+# CONFIG_POHMELFS is not set
+# CONFIG_POSIX_MQUEUE is not set
+# CONFIG_POWERTV is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_PPC4xx_GPIO is not set
+# CONFIG_PPC_16K_PAGES is not set
+# CONFIG_PPC_256K_PAGES is not set
+CONFIG_PPC_4K_PAGES=y
+# CONFIG_PPC_64K_PAGES is not set
+# CONFIG_PPC_DISABLE_WERROR is not set
+# CONFIG_PPC_EMULATED_STATS is not set
+# CONFIG_PPP is not set
+# CONFIG_PPPOATM is not set
+# CONFIG_PPPOE is not set
+# CONFIG_PPPOL2TP is not set
+# CONFIG_PPP_ASYNC is not set
+# CONFIG_PPP_BSDCOMP is not set
+# CONFIG_PPP_DEFLATE is not set
+CONFIG_PPP_FILTER=y
+# CONFIG_PPP_MPPE is not set
+CONFIG_PPP_MULTILINK=y
+# CONFIG_PPP_SYNC_TTY is not set
+# CONFIG_PPS is not set
+# CONFIG_PPTP is not set
+# CONFIG_PREEMPT is not set
+CONFIG_PREEMPT_NONE=y
+# CONFIG_PREEMPT_VOLUNTARY is not set
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_PRINTK=y
+# CONFIG_PRINTK_TIME is not set
+# CONFIG_PRISM2_USB is not set
+# CONFIG_PRISM54 is not set
+# CONFIG_PROBE_INITRD_HEADER is not set
+CONFIG_PROC_FS=y
+# CONFIG_PROC_KCORE is not set
+# CONFIG_PROC_PAGE_MONITOR is not set
+CONFIG_PROC_SYSCTL=y
+# CONFIG_PROFILING is not set
+# CONFIG_PROVE_LOCKING is not set
+# CONFIG_PSTORE is not set
+# CONFIG_QLA3XXX is not set
+# CONFIG_QLCNIC is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_QSEMI_PHY is not set
+# CONFIG_QUOTA is not set
+# CONFIG_QUOTA_DEBUG is not set
+# CONFIG_R3964 is not set
+# CONFIG_R6040 is not set
+# CONFIG_R8169 is not set
+# CONFIG_R8187SE is not set
+# CONFIG_R8712U is not set
+# CONFIG_RTS_PSTOR is not set
+# CONFIG_RADIO_ADAPTERS is not set
+# CONFIG_RADIO_AZTECH is not set
+# CONFIG_RADIO_CADET is not set
+# CONFIG_RADIO_GEMTEK is not set
+# CONFIG_RADIO_GEMTEK_PCI is not set
+# CONFIG_RADIO_MAESTRO is not set
+# CONFIG_RADIO_MAXIRADIO is not set
+# CONFIG_RADIO_RTRACK is not set
+# CONFIG_RADIO_RTRACK2 is not set
+# CONFIG_RADIO_SF16FMI is not set
+# CONFIG_RADIO_SF16FMR2 is not set
+# CONFIG_RADIO_TERRATEC is not set
+# CONFIG_RADIO_TRUST is not set
+# CONFIG_RADIO_TYPHOON is not set
+# CONFIG_RADIO_ZOLTRIX is not set
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_RAMOOPS is not set
+# CONFIG_RAPIDIO is not set
+# CONFIG_RAR_REGISTER is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_RC_CORE is not set
+# CONFIG_RCU_CPU_STALL_DETECTOR is not set
+CONFIG_RCU_FANOUT=32
+# CONFIG_RCU_FANOUT_EXACT is not set
+# CONFIG_RCU_FAST_NO_HZ is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_RCU_TRACE is not set
+# CONFIG_RC_MAP is not set
+# CONFIG_RDS is not set
+# CONFIG_RD_BZIP2 is not set
+# CONFIG_RD_GZIP is not set
+CONFIG_RD_LZMA=y
+# CONFIG_RD_LZO is not set
+# CONFIG_RD_XZ is not set
+# CONFIG_REALTEK_PHY is not set
+# CONFIG_REDWOOD is not set
+# CONFIG_REGULATOR is not set
+# CONFIG_REGULATOR_BQ24022 is not set
+# CONFIG_REGULATOR_FIXED_VOLTAGE is not set
+# CONFIG_REGULATOR_VIRTUAL_CONSUMER is not set
+# CONFIG_REISERFS_CHECK is not set
+# CONFIG_REISERFS_FS is not set
+# CONFIG_REISERFS_FS_XATTR is not set
+# CONFIG_REISERFS_PROC_INFO is not set
+# CONFIG_RELAY is not set
+# CONFIG_RFD_FTL is not set
+# CONFIG_RFKILL is not set
+# CONFIG_RFKILL_INPUT is not set
+# CONFIG_ROMFS_FS is not set
+# CONFIG_ROSE is not set
+# CONFIG_RPCSEC_GSS_KRB5 is not set
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_RT2860 is not set
+# CONFIG_RT2870 is not set
+# CONFIG_RT2X00 is not set
+# ONFIG_RTC_CLASS is not set
+# CONFIG_RTC_DEBUG is not set
+# CONFIG_RTC_DRV_BQ32K is not set
+# CONFIG_RTC_DRV_BQ4802 is not set
+CONFIG_RTC_DRV_CMOS=y
+# CONFIG_RTC_DRV_DS1286 is not set
+# CONFIG_RTC_DRV_DS1305 is not set
+# CONFIG_RTC_DRV_DS1307 is not set
+# CONFIG_RTC_DRV_DS1374 is not set
+# CONFIG_RTC_DRV_DS1390 is not set
+# CONFIG_RTC_DRV_DS1511 is not set
+# CONFIG_RTC_DRV_DS1553 is not set
+# CONFIG_RTC_DRV_DS1672 is not set
+# CONFIG_RTC_DRV_DS1742 is not set
+# CONFIG_RTC_DRV_DS3232 is not set
+# CONFIG_RTC_DRV_DS3234 is not set
+# CONFIG_RTC_DRV_EM3027 is not set
+# CONFIG_RTC_DRV_EP93XX is not set
+# CONFIG_RTC_DRV_FM3130 is not set
+# CONFIG_RTC_DRV_GENERIC is not set
+# CONFIG_RTC_DRV_ISL12022 is not set
+# CONFIG_RTC_DRV_ISL1208 is not set
+# CONFIG_RTC_DRV_M41T80 is not set
+# CONFIG_RTC_DRV_M41T93 is not set
+# CONFIG_RTC_DRV_M41T94 is not set
+# CONFIG_RTC_DRV_M48T35 is not set
+# CONFIG_RTC_DRV_M48T59 is not set
+# CONFIG_RTC_DRV_M48T86 is not set
+# CONFIG_RTC_DRV_MAX6900 is not set
+# CONFIG_RTC_DRV_MAX6902 is not set
+# CONFIG_RTC_DRV_MSM6242 is not set
+# CONFIG_RTC_DRV_PCF2123 is not set
+# CONFIG_RTC_DRV_PCF8563 is not set
+# CONFIG_RTC_DRV_PCF8583 is not set
+# CONFIG_RTC_DRV_PL030 is not set
+# CONFIG_RTC_DRV_PL031 is not set
+# CONFIG_RTC_DRV_R9701 is not set
+# CONFIG_RTC_DRV_RP5C01 is not set
+# CONFIG_RTC_DRV_RS5C348 is not set
+# CONFIG_RTC_DRV_RS5C372 is not set
+# CONFIG_RTC_DRV_RTC7301 is not set
+# CONFIG_RTC_DRV_RV3029C2 is not set
+# CONFIG_RTC_DRV_RX8025 is not set
+# CONFIG_RTC_DRV_RX8581 is not set
+# CONFIG_RTC_DRV_S35390A is not set
+# CONFIG_RTC_DRV_STK17TA8 is not set
+# CONFIG_RTC_DRV_TEST is not set
+# CONFIG_RTC_DRV_V3020 is not set
+# CONFIG_RTC_DRV_X1205 is not set
+CONFIG_RTC_HCTOSYS=y
+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
+CONFIG_RTC_INTF_DEV=y
+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
+CONFIG_RTC_INTF_PROC=y
+CONFIG_RTC_INTF_SYSFS=y
+CONFIG_RTC_LIB=y
+# CONFIG_RTL8180 is not set
+# CONFIG_RTL8187 is not set
+# CONFIG_RTL8192E is not set
+# CONFIG_RTL8192SU is not set
+# CONFIG_RTL8192U is not set
+# CONFIG_RTL8306_PHY is not set
+# CONFIG_RTL8366RB_PHY is not set
+# CONFIG_RTL8366S_PHY is not set
+# CONFIG_RTL8366S_PHY_DEBUG_FS is not set
+# CONFIG_RTL8366_SMI is not set
+# CONFIG_RTS_PSTOR is not set
+CONFIG_RT_MUTEXES=y
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_RUNTIME_DEBUG is not set
+CONFIG_RWSEM_GENERIC_SPINLOCK=y
+# CONFIG_S2IO is not set
+# CONFIG_SAMPLES is not set
+# CONFIG_SATA_ACARD_AHCI is not set
+# CONFIG_SATA_AHCI is not set
+# CONFIG_SATA_AHCI_PLATFORM is not set
+# CONFIG_SATA_INIC162X is not set
+# CONFIG_SATA_MV is not set
+# CONFIG_SATA_NV is not set
+# CONFIG_SATA_PMP is not set
+# CONFIG_SATA_PROMISE is not set
+# CONFIG_SATA_QSTOR is not set
+# CONFIG_SATA_SIL is not set
+# CONFIG_SATA_SIL24 is not set
+# CONFIG_SATA_SIS is not set
+# CONFIG_SATA_SVW is not set
+# CONFIG_SATA_SX4 is not set
+# CONFIG_SATA_ULI is not set
+# CONFIG_SATA_VIA is not set
+# CONFIG_SATA_VITESSE is not set
+# CONFIG_SBC_FITPC2_WATCHDOG is not set
+# CONFIG_SBE_2T3E3 is not set
+# CONFIG_SC92031 is not set
+# CONFIG_SCC is not set
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_SCHED_AUTOGROUP is not set
+# CONFIG_SCHED_DEBUG is not set
+CONFIG_SCHED_OMIT_FRAME_POINTER=y
+# CONFIG_SCHED_TRACER is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_3W_9XXX is not set
+# CONFIG_SCSI_3W_SAS is not set
+# CONFIG_SCSI_7000FASST is not set
+# CONFIG_SCSI_AACRAID is not set
+# CONFIG_SCSI_ACARD is not set
+# CONFIG_SCSI_ADVANSYS is not set
+# CONFIG_SCSI_AHA152X is not set
+# CONFIG_SCSI_AHA1542 is not set
+# CONFIG_SCSI_AIC79XX is not set
+# CONFIG_SCSI_AIC7XXX is not set
+# CONFIG_SCSI_AIC7XXX_OLD is not set
+# CONFIG_SCSI_AIC94XX is not set
+# CONFIG_SCSI_ARCMSR is not set
+# CONFIG_SCSI_BFA_FC is not set
+# CONFIG_SCSI_BNX2_ISCSI is not set
+# CONFIG_SCSI_BNX2X_FCOE is not set
+# CONFIG_SCSI_BUSLOGIC is not set
+# CONFIG_SCSI_CONSTANTS is not set
+# CONFIG_SCSI_DC390T is not set
+# CONFIG_SCSI_DC395x is not set
+# CONFIG_SCSI_DEBUG is not set
+# CONFIG_SCSI_DH is not set
+CONFIG_SCSI_DMA=y
+# CONFIG_SCSI_DMX3191D is not set
+# CONFIG_SCSI_DPT_I2O is not set
+# CONFIG_SCSI_DTC3280 is not set
+# CONFIG_SCSI_EATA is not set
+# CONFIG_SCSI_FC_ATTRS is not set
+# CONFIG_SCSI_FUTURE_DOMAIN is not set
+# CONFIG_SCSI_GDTH is not set
+# CONFIG_SCSI_GENERIC_NCR5380 is not set
+# CONFIG_SCSI_GENERIC_NCR5380_MMIO is not set
+# CONFIG_SCSI_HPSA is not set
+# CONFIG_SCSI_HPTIOP is not set
+# CONFIG_SCSI_IN2000 is not set
+# CONFIG_SCSI_INIA100 is not set
+# CONFIG_SCSI_INITIO is not set
+# CONFIG_SCSI_IPR is not set
+# CONFIG_SCSI_IPS is not set
+# CONFIG_SCSI_ISCSI_ATTRS is not set
+# CONFIG_SCSI_LOGGING is not set
+CONFIG_SCSI_LOWLEVEL=y
+# CONFIG_SCSI_LOWLEVEL_PCMCIA is not set
+# CONFIG_SCSI_LPFC is not set
+CONFIG_SCSI_MOD=y
+# CONFIG_SCSI_MPT2SAS is not set
+CONFIG_SCSI_MULTI_LUN=y
+# CONFIG_SCSI_MVSAS is not set
+# CONFIG_SCSI_MVSAS_DEBUG is not set
+# CONFIG_SCSI_NCR53C406A is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_SCSI_NSP32 is not set
+# CONFIG_SCSI_OSD_INITIATOR is not set
+# CONFIG_SCSI_PAS16 is not set
+# CONFIG_SCSI_PM8001 is not set
+# CONFIG_SCSI_PMCRAID is not set
+CONFIG_SCSI_PROC_FS=y
+# CONFIG_SCSI_QLA_FC is not set
+# CONFIG_SCSI_QLA_ISCSI is not set
+# CONFIG_SCSI_QLOGIC_1280 is not set
+# CONFIG_SCSI_QLOGIC_FAS is not set
+# CONFIG_SCSI_SAS_ATTRS is not set
+# CONFIG_SCSI_SAS_LIBSAS is not set
+# CONFIG_SCSI_SCAN_ASYNC is not set
+# CONFIG_SCSI_SPI_ATTRS is not set
+# CONFIG_SCSI_SRP is not set
+# CONFIG_SCSI_SRP_ATTRS is not set
+# CONFIG_SCSI_STEX is not set
+# CONFIG_SCSI_SYM53C416 is not set
+# CONFIG_SCSI_SYM53C8XX_2 is not set
+# CONFIG_SCSI_T128 is not set
+# CONFIG_SCSI_TGT is not set
+# CONFIG_SCSI_U14_34F is not set
+# CONFIG_SCSI_ULTRASTOR is not set
+CONFIG_SCSI_WAIT_SCAN=m
+# CONFIG_SECCOMP is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITYFS is not set
+# CONFIG_SECURITY_DMESG_RESTRICT is not set
+CONFIG_SELECT_MEMORY_MODEL=y
+# CONFIG_SENSORS_ABITUGURU is not set
+# CONFIG_SENSORS_ABITUGURU3 is not set
+# CONFIG_SENSORS_AD7414 is not set
+# CONFIG_SENSORS_AD7418 is not set
+# CONFIG_SENSORS_ADCXX is not set
+# CONFIG_SENSORS_ADM1021 is not set
+# CONFIG_SENSORS_ADM1025 is not set
+# CONFIG_SENSORS_ADM1026 is not set
+# CONFIG_SENSORS_ADM1029 is not set
+# CONFIG_SENSORS_ADM1031 is not set
+# CONFIG_SENSORS_ADM9240 is not set
+# CONFIG_SENSORS_ADS1015 is not set
+# CONFIG_SENSORS_ADS7828 is not set
+# CONFIG_SENSORS_ADS7871 is not set
+# CONFIG_SENSORS_ADT7411 is not set
+# CONFIG_SENSORS_ADT7462 is not set
+# CONFIG_SENSORS_ADT7470 is not set
+# CONFIG_SENSORS_ADT7475 is not set
+# CONFIG_SENSORS_AMC6821 is not set
+# CONFIG_SENSORS_APDS990X is not set
+# CONFIG_SENSORS_APPLESMC is not set
+# CONFIG_SENSORS_ASB100 is not set
+# CONFIG_SENSORS_ASC7621 is not set
+# CONFIG_SENSORS_ATK0110 is not set
+# CONFIG_SENSORS_ATXP1 is not set
+# CONFIG_SENSORS_BH1770 is not set
+# CONFIG_SENSORS_BH1780 is not set
+# CONFIG_SENSORS_CORETEMP is not set
+# CONFIG_SENSORS_DME1737 is not set
+# CONFIG_SENSORS_DS1621 is not set
+# CONFIG_SENSORS_DS620 is not set
+# CONFIG_SENSORS_EMC1403 is not set
+# CONFIG_SENSORS_EMC2103 is not set
+# CONFIG_SENSORS_EMC6W201 is not set
+# CONFIG_SENSORS_F71805F is not set
+# CONFIG_SENSORS_F71882FG is not set
+# CONFIG_SENSORS_F75375S is not set
+# CONFIG_SENSORS_FSCHMD is not set
+# CONFIG_SENSORS_G760A is not set
+# CONFIG_SENSORS_GL518SM is not set
+# CONFIG_SENSORS_GL520SM is not set
+# CONFIG_SENSORS_GPIO_FAN is not set
+# CONFIG_SENSORS_HDAPS is not set
+# CONFIG_SENSORS_I5K_AMB is not set
+# CONFIG_SENSORS_IT87 is not set
+# CONFIG_SENSORS_JC42 is not set
+# CONFIG_SENSORS_K8TEMP is not set
+# CONFIG_SENSORS_LINEAGE is not set
+# CONFIG_SENSORS_LIS3LV02D is not set
+# CONFIG_SENSORS_LIS3_I2C is not set
+# CONFIG_SENSORS_LIS3_SPI is not set
+# CONFIG_SENSORS_LM63 is not set
+# CONFIG_SENSORS_LM70 is not set
+# CONFIG_SENSORS_LM73 is not set
+# CONFIG_SENSORS_LM75 is not set
+# CONFIG_SENSORS_LM77 is not set
+# CONFIG_SENSORS_LM78 is not set
+# CONFIG_SENSORS_LM80 is not set
+# CONFIG_SENSORS_LM83 is not set
+# CONFIG_SENSORS_LM85 is not set
+# CONFIG_SENSORS_LM87 is not set
+# CONFIG_SENSORS_LM90 is not set
+# CONFIG_SENSORS_LM92 is not set
+# CONFIG_SENSORS_LM93 is not set
+# CONFIG_SENSORS_LM95241 is not set
+# CONFIG_SENSORS_LTC4151 is not set
+# CONFIG_SENSORS_LTC4215 is not set
+# CONFIG_SENSORS_LTC4245 is not set
+# CONFIG_SENSORS_LTC4261 is not set
+# CONFIG_SENSORS_MAX1111 is not set
+# CONFIG_SENSORS_MAX16065 is not set
+# CONFIG_SENSORS_MAX1619 is not set
+# CONFIG_SENSORS_MAX6639 is not set
+# CONFIG_SENSORS_MAX6642 is not set
+# CONFIG_SENSORS_MAX6650 is not set
+# CONFIG_SENSORS_PC87360 is not set
+# CONFIG_SENSORS_PC87427 is not set
+# CONFIG_SENSORS_PCF8591 is not set
+# CONFIG_SENSORS_SCH5627 is not set
+# CONFIG_SENSORS_SHT15 is not set
+# CONFIG_SENSORS_SHT21 is not set
+# CONFIG_SENSORS_SIS5595 is not set
+# CONFIG_SENSORS_SMM665 is not set
+# CONFIG_SENSORS_SMSC47B397 is not set
+# CONFIG_SENSORS_SMSC47M1 is not set
+# CONFIG_SENSORS_SMSC47M192 is not set
+# CONFIG_SENSORS_THMC50 is not set
+# CONFIG_SENSORS_TMP102 is not set
+# CONFIG_SENSORS_TMP401 is not set
+# CONFIG_SENSORS_TMP421 is not set
+# CONFIG_SENSORS_TSL2550 is not set
+# CONFIG_SENSORS_VIA686A is not set
+# CONFIG_SENSORS_VT1211 is not set
+# CONFIG_SENSORS_VT8231 is not set
+# CONFIG_SENSORS_W83627EHF is not set
+# CONFIG_SENSORS_W83627HF is not set
+# CONFIG_SENSORS_W83781D is not set
+# CONFIG_SENSORS_W83791D is not set
+# CONFIG_SENSORS_W83792D is not set
+# CONFIG_SENSORS_W83793 is not set
+# CONFIG_SENSORS_W83795 is not set
+# CONFIG_SENSORS_W83L785TS is not set
+# CONFIG_SENSORS_W83L786NG is not set
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+# CONFIG_SERIAL_8250_CS is not set
+# CONFIG_SERIAL_8250_EXTENDED is not set
+CONFIG_SERIAL_8250_NR_UARTS=2
+# CONFIG_SERIAL_8250_PCI is not set
+CONFIG_SERIAL_8250_RUNTIME_UARTS=2
+# CONFIG_SERIAL_ALTERA_JTAGUART is not set
+# CONFIG_SERIAL_ALTERA_UART is not set
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+# CONFIG_SERIAL_GRLIB_GAISLER_APBUART is not set
+# CONFIG_SERIAL_IFX6X60 is not set
+# CONFIG_SERIAL_JSM is not set
+# CONFIG_SERIAL_MAX3100 is not set
+# CONFIG_SERIAL_MAX3107 is not set
+# CONFIG_SERIAL_MFD_HSU is not set
+# CONFIG_SERIAL_NONSTANDARD is not set
+# CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL is not set
+# CONFIG_SERIAL_PCH_UART is not set
+# CONFIG_SERIAL_TIMBERDALE is not set
+# CONFIG_SERIAL_UARTLITE is not set
+# CONFIG_SERIAL_XILINX_PS_UART is not set
+# CONFIG_SERIO is not set
+# CONFIG_SERIO_ALTERA_PS2 is not set
+# CONFIG_SFI is not set
+# CONFIG_SGI_IOC4 is not set
+# CONFIG_SGI_IP22 is not set
+# CONFIG_SGI_IP27 is not set
+# CONFIG_SGI_IP28 is not set
+# CONFIG_SGI_IP32 is not set
+# CONFIG_SGI_PARTITION is not set
+CONFIG_SHMEM=y
+# CONFIG_SIBYTE_BIGSUR is not set
+# CONFIG_SIBYTE_CARMEL is not set
+# CONFIG_SIBYTE_CRHINE is not set
+# CONFIG_SIBYTE_CRHONE is not set
+# CONFIG_SIBYTE_LITTLESUR is not set
+# CONFIG_SIBYTE_RHONE is not set
+# CONFIG_SIBYTE_SENTOSA is not set
+# CONFIG_SIBYTE_SWARM is not set
+CONFIG_SIGNALFD=y
+# CONFIG_SIMPLE_GPIO is not set
+# CONFIG_SIS190 is not set
+# CONFIG_SIS900 is not set
+# CONFIG_SKGE is not set
+# CONFIG_SKY2 is not set
+# CONFIG_SKY2_DEBUG is not set
+CONFIG_SLAB=y
+CONFIG_SLABINFO=y
+# CONFIG_SLHC is not set
+# CONFIG_SLICOSS is not set
+# CONFIG_SLIP is not set
+# CONFIG_SLOB is not set
+# CONFIG_SLUB is not set
+# CONFIG_SLUB_DEBUG is not set
+# CONFIG_SLUB_STATS is not set
+# CONFIG_SMARTJOYPLUS_FF is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_SMB_NLS_DEFAULT is not set
+# CONFIG_SMC911X is not set
+# CONFIG_SMC91X is not set
+# CONFIG_SMP is not set
+# CONFIG_SMSC911X is not set
+# CONFIG_SMSC9420 is not set
+# CONFIG_SMSC_PHY is not set
+# CONFIG_SM_FTL is not set
+# CONFIG_SND is not set
+# CONFIG_SND_AC97_POWER_SAVE is not set
+# CONFIG_SND_AD1816A is not set
+# CONFIG_SND_AD1848 is not set
+# CONFIG_SND_AD1889 is not set
+# CONFIG_SND_ADLIB is not set
+# CONFIG_SND_ALI5451 is not set
+# CONFIG_SND_ALOOP is not set
+# CONFIG_SND_ALS100 is not set
+# CONFIG_SND_ALS300 is not set
+# CONFIG_SND_ALS4000 is not set
+# CONFIG_SND_ARM is not set
+# CONFIG_SND_ASIHPI is not set
+# CONFIG_SND_ATIIXP is not set
+# CONFIG_SND_ATIIXP_MODEM is not set
+# CONFIG_SND_ATMEL_AC97C is not set
+# CONFIG_SND_ATMEL_SOC is not set
+# CONFIG_SND_AU8810 is not set
+# CONFIG_SND_AU8820 is not set
+# CONFIG_SND_AU8830 is not set
+# CONFIG_SND_AW2 is not set
+# CONFIG_SND_AZT2320 is not set
+# CONFIG_SND_AZT3328 is not set
+# CONFIG_SND_BT87X is not set
+# CONFIG_SND_CA0106 is not set
+# CONFIG_SND_CMI8330 is not set
+# CONFIG_SND_CMIPCI is not set
+# CONFIG_SND_CS4231 is not set
+# CONFIG_SND_CS4236 is not set
+# CONFIG_SND_CS4281 is not set
+# CONFIG_SND_CS46XX is not set
+# CONFIG_SND_CS5530 is not set
+# CONFIG_SND_CS5535AUDIO is not set
+# CONFIG_SND_CTXFI is not set
+# CONFIG_SND_DARLA20 is not set
+# CONFIG_SND_DARLA24 is not set
+# CONFIG_SND_DEBUG is not set
+CONFIG_SND_DRIVERS=y
+# CONFIG_SND_DUMMY is not set
+# CONFIG_SND_DYNAMIC_MINORS is not set
+# CONFIG_SND_ECHO3G is not set
+# CONFIG_SND_EMU10K1 is not set
+# CONFIG_SND_EMU10K1X is not set
+# CONFIG_SND_ENS1370 is not set
+# CONFIG_SND_ENS1371 is not set
+# CONFIG_SND_ES1688 is not set
+# CONFIG_SND_ES18XX is not set
+# CONFIG_SND_ES1938 is not set
+# CONFIG_SND_ES1968 is not set
+# CONFIG_SND_FM801 is not set
+# CONFIG_SND_GINA20 is not set
+# CONFIG_SND_GINA24 is not set
+# CONFIG_SND_GUSCLASSIC is not set
+# CONFIG_SND_GUSEXTREME is not set
+# CONFIG_SND_GUSMAX is not set
+# CONFIG_SND_HDA_INTEL is not set
+# CONFIG_SND_HDSP is not set
+# CONFIG_SND_HDSPM is not set
+# CONFIG_SND_HIFIER is not set
+# CONFIG_SND_HRTIMER is not set
+# CONFIG_SND_HWDEP is not set
+# CONFIG_SND_ICE1712 is not set
+# CONFIG_SND_ICE1724 is not set
+# CONFIG_SND_INDIGO is not set
+# CONFIG_SND_INDIGODJ is not set
+# CONFIG_SND_INDIGODJX is not set
+# CONFIG_SND_INDIGOIO is not set
+# CONFIG_SND_INDIGOIOX is not set
+# CONFIG_SND_INTEL8X0 is not set
+# CONFIG_SND_INTEL8X0M is not set
+# CONFIG_SND_INTERWAVE is not set
+# CONFIG_SND_INTERWAVE_STB is not set
+# CONFIG_SND_ISA is not set
+# CONFIG_SND_KIRKWOOD_SOC is not set
+# CONFIG_SND_KORG1212 is not set
+# CONFIG_SND_LAYLA20 is not set
+# CONFIG_SND_LAYLA24 is not set
+# CONFIG_SND_LOLA is not set
+# CONFIG_SND_LX6464ES is not set
+# CONFIG_SND_MAESTRO3 is not set
+# CONFIG_SND_MIA is not set
+# CONFIG_SND_MIPS is not set
+# CONFIG_SND_MIRO is not set
+# CONFIG_SND_MIXART is not set
+# CONFIG_SND_MIXER_OSS is not set
+# CONFIG_SND_MONA is not set
+# CONFIG_SND_MPU401 is not set
+# CONFIG_SND_MTPAV is not set
+# CONFIG_SND_MTS64 is not set
+# CONFIG_SND_NM256 is not set
+# CONFIG_SND_OPL3SA2 is not set
+# CONFIG_SND_OPTI92X_AD1848 is not set
+# CONFIG_SND_OPTI92X_CS4231 is not set
+# CONFIG_SND_OPTI93X is not set
+CONFIG_SND_OSSEMUL=y
+# CONFIG_SND_OXYGEN is not set
+CONFIG_SND_PCI=y
+# CONFIG_SND_PCM is not set
+# CONFIG_SND_PCMCIA is not set
+# CONFIG_SND_PCM_OSS is not set
+CONFIG_SND_PCM_OSS_PLUGINS=y
+# CONFIG_SND_PCXHR is not set
+# CONFIG_SND_PDAUDIOCF is not set
+# CONFIG_SND_PORTMAN2X4 is not set
+# CONFIG_SND_RAWMIDI is not set
+# CONFIG_SND_RIPTIDE is not set
+# CONFIG_SND_RME32 is not set
+# CONFIG_SND_RME96 is not set
+# CONFIG_SND_RME9652 is not set
+# CONFIG_SND_RTCTIMER is not set
+# CONFIG_SND_SB16 is not set
+# CONFIG_SND_SB8 is not set
+# CONFIG_SND_SBAWE is not set
+# CONFIG_SND_SEQUENCER is not set
+# CONFIG_SND_SERIAL_U16550 is not set
+# CONFIG_SND_SGALAXY is not set
+# CONFIG_SND_SIS7019 is not set
+# CONFIG_SND_SOC is not set
+# CONFIG_SND_SOC_CACHE_LZO is not set
+# CONFIG_SND_SONICVIBES is not set
+# CONFIG_SND_SPI is not set
+# CONFIG_SND_SSCAPE is not set
+# CONFIG_SND_SUPPORT_OLD_API is not set
+# CONFIG_SND_TIMER is not set
+# CONFIG_SND_TRIDENT is not set
+CONFIG_SND_USB=y
+# CONFIG_SND_USB_6FIRE is not set
+# CONFIG_SND_USB_AUDIO is not set
+# CONFIG_SND_USB_CAIAQ is not set
+# CONFIG_SND_USB_UA101 is not set
+# CONFIG_SND_USB_US122L is not set
+# CONFIG_SND_USB_USX2Y is not set
+# CONFIG_SND_VERBOSE_PRINTK is not set
+CONFIG_SND_VERBOSE_PROCFS=y
+# CONFIG_SND_VIA82XX is not set
+# CONFIG_SND_VIA82XX_MODEM is not set
+# CONFIG_SND_VIRTUOSO is not set
+# CONFIG_SND_VX222 is not set
+# CONFIG_SND_VXPOCKET is not set
+# CONFIG_SND_WAVEFRONT is not set
+# CONFIG_SND_YMFPCI is not set
+# CONFIG_SNI_RM is not set
+# CONFIG_SOC_CAMERA is not set
+# CONFIG_SOFT_WATCHDOG is not set
+# CONFIG_SOLARIS_X86_PARTITION is not set
+# CONFIG_SOLO6X10 is not set
+# CONFIG_SONYPI is not set
+# CONFIG_SONY_LAPTOP is not set
+# CONFIG_SOUND is not set
+# CONFIG_SOUND_PRIME is not set
+# CONFIG_SP5100_TCO is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_STATIC is not set
+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
+# CONFIG_SPARSE_IRQ is not set
+# CONFIG_SPARSE_RCU_POINTER is not set
+# CONFIG_SPEAKUP is not set
+# CONFIG_SPI is not set
+# CONFIG_SPINLOCK_TEST is not set
+# CONFIG_SPI_ALTERA is not set
+# CONFIG_SPI_BUTTERFLY is not set
+# CONFIG_SPI_DEBUG is not set
+# CONFIG_SPI_DESIGNWARE is not set
+# CONFIG_SPI_GPIO_OLD is not set
+# CONFIG_SPI_LM70_LLP is not set
+# CONFIG_SPI_MASTER is not set
+# CONFIG_SPI_OC_TINY is not set
+# CONFIG_SPI_ORION is not set
+# CONFIG_SPI_PXA2XX is not set
+# CONFIG_SPI_PXA2XX_PCI is not set
+# CONFIG_SPI_RB4XX is not set
+# CONFIG_SPI_RB4XX_CPLD is not set
+# CONFIG_SPI_SPIDEV is not set
+# CONFIG_SPI_TLE62X0 is not set
+# CONFIG_SPI_TOPCLIFF_PCH is not set
+# CONFIG_SPI_VSC7385 is not set
+# CONFIG_SPI_XILINX is not set
+CONFIG_SPLIT_PTLOCK_CPUS=4
+CONFIG_SQUASHFS=y
+# CONFIG_SQUASHFS_EMBEDDED is not set
+CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE=3
+CONFIG_SQUASHFS_LZMA=y
+# CONFIG_SQUASHFS_LZO is not set
+# CONFIG_SQUASHFS_XATTR is not set
+# CONFIG_SQUASHFS_XATTRS is not set
+CONFIG_SQUASHFS_XZ=y
+# CONFIG_SSB is not set
+# CONFIG_SSB_DEBUG is not set
+# CONFIG_SSB_PCMCIAHOST is not set
+CONFIG_SSB_POSSIBLE=y
+# CONFIG_SSB_SDIOHOST is not set
+# CONFIG_SSB_SILENT is not set
+# CONFIG_SSFDC is not set
+CONFIG_STACKTRACE_SUPPORT=y
+# CONFIG_STACK_TRACER is not set
+CONFIG_STAGING=y
+# CONFIG_STAGING_EXCLUDE_BUILD is not set
+CONFIG_STANDALONE=y
+CONFIG_STDBINUTILS=y
+# CONFIG_STE10XP is not set
+# CONFIG_STMMAC_ETH is not set
+CONFIG_STP=y
+# CONFIG_STRICT_DEVMEM is not set
+CONFIG_STRIP_ASM_SYMS=y
+# CONFIG_STUB_POULSBO is not set
+# CONFIG_ST_BT is not set
+# CONFIG_SUNDANCE is not set
+# CONFIG_SUNGEM is not set
+# CONFIG_SUNRPC is not set
+# CONFIG_SUNRPC_GSS is not set
+# CONFIG_SUN_PARTITION is not set
+# CONFIG_SUSPEND is not set
+CONFIG_SWAP=y
+# CONFIG_SWCONFIG is not set
+# CONFIG_SYNCLINK_CS is not set
+CONFIG_SYN_COOKIES=y
+CONFIG_SYSCTL=y
+# CONFIG_SYSCTL_SYSCALL is not set
+# CONFIG_SYSCTL_SYSCALL_CHECK is not set
+CONFIG_SYSFS=y
+# CONFIG_SYSFS_DEPRECATED is not set
+# CONFIG_SYSFS_DEPRECATED_V2 is not set
+# CONFIG_SYSV68_PARTITION is not set
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+# CONFIG_SYSV_FS is not set
+# CONFIG_SYS_HYPERVISOR is not set
+# CONFIG_TARGET_CORE is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_TC35815 is not set
+# CONFIG_TCG_TPM is not set
+# CONFIG_TCIC is not set
+CONFIG_TCP_CONG_ADVANCED=y
+# CONFIG_TCP_CONG_BIC is not set
+# CONFIG_TCP_CONG_CUBIC is not set
+# CONFIG_TCP_CONG_HSTCP is not set
+# CONFIG_TCP_CONG_HTCP is not set
+# CONFIG_TCP_CONG_HYBLA is not set
+# CONFIG_TCP_CONG_ILLINOIS is not set
+# CONFIG_TCP_CONG_LP is not set
+# CONFIG_TCP_CONG_SCALABLE is not set
+# CONFIG_TCP_CONG_VEGAS is not set
+# CONFIG_TCP_CONG_VENO is not set
+CONFIG_TCP_CONG_WESTWOOD=y
+# CONFIG_TCP_CONG_YEAH is not set
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_TEST_KSTRTOX is not set
+# CONFIG_TEST_LIST_SORT is not set
+# CONFIG_TEST_POWER is not set
+CONFIG_TEXTSEARCH=y
+# CONFIG_TEXTSEARCH_BM is not set
+# CONFIG_TEXTSEARCH_FSM is not set
+# CONFIG_TEXTSEARCH_KMP is not set
+# CONFIG_THERMAL is not set
+# CONFIG_THERMAL_HWMON is not set
+# CONFIG_THRUSTMASTER_FF is not set
+CONFIG_TICK_ONESHOT=y
+# CONFIG_TIFM_CORE is not set
+# CONFIG_TIGON3 is not set
+# CONFIG_TIMB_DMA is not set
+CONFIG_TIMERFD=y
+# CONFIG_TIMER_STATS is not set
+CONFIG_TINY_RCU=y
+# CONFIG_TIPC is not set
+# CONFIG_TI_DAC7512 is not set
+# CONFIG_TI_ST is not set
+# CONFIG_TLAN is not set
+# CONFIG_TMD_HERMES is not set
+CONFIG_TMPFS=y
+CONFIG_TMPFS_XATTR=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_TOUCHSCREEN_AD7877 is not set
+# CONFIG_TOUCHSCREEN_AD7879 is not set
+# CONFIG_TOUCHSCREEN_AD7879_I2C is not set
+# CONFIG_TOUCHSCREEN_AD7879_SPI is not set
+# CONFIG_TOUCHSCREEN_ADS7846 is not set
+# CONFIG_TOUCHSCREEN_CLEARPAD_TM1217 is not set
+# CONFIG_TOUCHSCREEN_CY8CTMG110 is not set
+# CONFIG_TOUCHSCREEN_EETI is not set
+# CONFIG_TOUCHSCREEN_ELO is not set
+# CONFIG_TOUCHSCREEN_FUJITSU is not set
+# CONFIG_TOUCHSCREEN_GUNZE is not set
+# CONFIG_TOUCHSCREEN_INEXIO is not set
+# CONFIG_TOUCHSCREEN_MCS5000 is not set
+# CONFIG_TOUCHSCREEN_MK712 is not set
+# CONFIG_TOUCHSCREEN_MTOUCH is not set
+# CONFIG_TOUCHSCREEN_PENMOUNT is not set
+# CONFIG_TOUCHSCREEN_QT602240 is not set
+# CONFIG_TOUCHSCREEN_S3C2410 is not set
+# CONFIG_TOUCHSCREEN_SYNAPTICS_I2C_RMI4 is not set
+# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
+# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
+# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
+# CONFIG_TOUCHSCREEN_TPS6507X is not set
+# CONFIG_TOUCHSCREEN_TSC2007 is not set
+# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
+# CONFIG_TOUCHSCREEN_W90X900 is not set
+# CONFIG_TOUCHSCREEN_WACOM_W8001 is not set
+# CONFIG_TPS6105X is not set
+# CONFIG_TPS65010 is not set
+# CONFIG_TPS6507X is not set
+# CONFIG_TR is not set
+# CONFIG_TRACE_BRANCH_PROFILING is not set
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
+# CONFIG_TRACE_SINK is not set
+CONFIG_TRACING_SUPPORT=y
+CONFIG_TRAD_SIGNALS=y
+# CONFIG_TRANZPORT is not set
+# CONFIG_TREE_PREEMPT_RCU is not set
+# CONFIG_TREE_RCU is not set
+# CONFIG_TREE_RCU_TRACE is not set
+# CONFIG_TTY_PRINTK is not set
+# CONFIG_TUN is not set
+# CONFIG_TWL4030_CORE is not set
+# CONFIG_UACCESS_WITH_MEMCPY is not set
+# CONFIG_UCB1400_CORE is not set
+# CONFIG_UDF_FS is not set
+CONFIG_UDF_NLS=y
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+# CONFIG_UFS_FS is not set
+# CONFIG_UIO is not set
+# CONFIG_ULTRIX_PARTITION is not set
+CONFIG_UNIX=y
+CONFIG_UNIX98_PTYS=y
+# CONFIG_UNIXWARE_DISKLABEL is not set
+# CONFIG_UNUSED_SYMBOLS is not set
+# CONFIG_USB is not set
+# CONFIG_USBPCWATCHDOG is not set
+# CONFIG_USB_ACM is not set
+# CONFIG_USB_ADUTUX is not set
+CONFIG_USB_ALI_M5632=y
+CONFIG_USB_AN2720=y
+# CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set
+# CONFIG_USB_APPLEDISPLAY is not set
+CONFIG_USB_ARCH_HAS_EHCI=y
+CONFIG_USB_ARCH_HAS_HCD=y
+CONFIG_USB_ARCH_HAS_OHCI=y
+CONFIG_USB_ARMLINUX=y
+# CONFIG_USB_ATM is not set
+CONFIG_USB_BELKIN=y
+# CONFIG_USB_C67X00_HCD is not set
+# CONFIG_USB_CATC is not set
+# CONFIG_USB_CXACRU is not set
+# CONFIG_USB_CYPRESS_CY7C63 is not set
+# CONFIG_USB_CYTHERM is not set
+# CONFIG_USB_DABUSB is not set
+# CONFIG_USB_DEBUG is not set
+CONFIG_USB_DEVICEFS=y
+# CONFIG_USB_DEVICE_CLASS is not set
+# CONFIG_USB_DSBR is not set
+# CONFIG_USB_DYNAMIC_MINORS is not set
+# CONFIG_USB_EHCI_HCD_PPC_OF is not set
+CONFIG_USB_EHCI_ROOT_HUB_TT=y
+# CONFIG_USB_EHCI_TT_NEWSCHED is not set
+# CONFIG_USB_EMI26 is not set
+# CONFIG_USB_EMI62 is not set
+# CONFIG_USB_ENESTORAGE is not set
+# CONFIG_USB_EPSON2888 is not set
+# CONFIG_USB_ET61X251 is not set
+CONFIG_USB_EZUSB=y
+# CONFIG_USB_FTDI_ELAN is not set
+# CONFIG_USB_GADGET is not set
+# CONFIG_USB_GADGET_DEBUG is not set
+# CONFIG_USB_GL860 is not set
+# CONFIG_USB_GPIO_VBUS is not set
+# CONFIG_USB_GSPCA is not set
+# CONFIG_USB_GSPCA_BENQ is not set
+# CONFIG_USB_GSPCA_CONEX is not set
+# CONFIG_USB_GSPCA_CPIA1 is not set
+# CONFIG_USB_GSPCA_ETOMS is not set
+# CONFIG_USB_GSPCA_FINEPIX is not set
+# CONFIG_USB_GSPCA_JEILINJ is not set
+# CONFIG_USB_GSPCA_KINECT is not set
+# CONFIG_USB_GSPCA_KONICA is not set
+# CONFIG_USB_GSPCA_MARS is not set
+# CONFIG_USB_GSPCA_MR97310A is not set
+# CONFIG_USB_GSPCA_NW80X is not set
+# CONFIG_USB_GSPCA_OV519 is not set
+# CONFIG_USB_GSPCA_OV534 is not set
+# CONFIG_USB_GSPCA_OV534_9 is not set
+# CONFIG_USB_GSPCA_PAC207 is not set
+# CONFIG_USB_GSPCA_PAC7302 is not set
+# CONFIG_USB_GSPCA_PAC7311 is not set
+# CONFIG_USB_GSPCA_SN9C2028 is not set
+# CONFIG_USB_GSPCA_SN9C20X is not set
+# CONFIG_USB_GSPCA_SONIXB is not set
+# CONFIG_USB_GSPCA_SONIXJ is not set
+# CONFIG_USB_GSPCA_SPCA1528 is not set
+# CONFIG_USB_GSPCA_SPCA500 is not set
+# CONFIG_USB_GSPCA_SPCA501 is not set
+# CONFIG_USB_GSPCA_SPCA505 is not set
+# CONFIG_USB_GSPCA_SPCA506 is not set
+# CONFIG_USB_GSPCA_SPCA508 is not set
+# CONFIG_USB_GSPCA_SPCA561 is not set
+# CONFIG_USB_GSPCA_SQ905 is not set
+# CONFIG_USB_GSPCA_SQ905C is not set
+# CONFIG_USB_GSPCA_SQ930X is not set
+# CONFIG_USB_GSPCA_STK014 is not set
+# CONFIG_USB_GSPCA_STV0680 is not set
+# CONFIG_USB_GSPCA_SUNPLUS is not set
+# CONFIG_USB_GSPCA_T613 is not set
+# CONFIG_USB_GSPCA_TV8532 is not set
+# CONFIG_USB_GSPCA_VC032X is not set
+# CONFIG_USB_GSPCA_VICAM is not set
+# CONFIG_USB_GSPCA_XIRLINK_CIT is not set
+# CONFIG_USB_GSPCA_ZC3XX is not set
+# CONFIG_USB_G_MULTI is not set
+# CONFIG_USB_G_NOKIA is not set
+# CONFIG_USB_HID is not set
+# CONFIG_USB_HIDDEV is not set
+# CONFIG_USB_HSO is not set
+# CONFIG_USB_HWA_HCD is not set
+# CONFIG_USB_IBMCAM is not set
+# CONFIG_USB_IDMOUSE is not set
+# CONFIG_USB_IOWARRIOR is not set
+# CONFIG_USB_IPHETH is not set
+# CONFIG_USB_IP_COMMON is not set
+# CONFIG_USB_ISIGHTFW is not set
+# CONFIG_USB_ISP116X_HCD is not set
+# CONFIG_USB_ISP1362_HCD is not set
+# CONFIG_USB_ISP1760_HCD is not set
+# CONFIG_USB_KAWETH is not set
+# CONFIG_USB_KBD is not set
+# CONFIG_USB_KC2190 is not set
+# CONFIG_USB_KONICAWC is not set
+# CONFIG_USB_LCD is not set
+# CONFIG_USB_LD is not set
+# CONFIG_USB_LED is not set
+# CONFIG_USB_LEGOTOWER is not set
+# CONFIG_USB_LIBUSUAL is not set
+# CONFIG_USB_M5602 is not set
+# CONFIG_USB_MASS_STORAGE is not set
+# CONFIG_USB_MDC800 is not set
+# CONFIG_USB_MICROTEK is not set
+# CONFIG_USB_MON is not set
+# CONFIG_USB_MOUSE is not set
+# CONFIG_USB_MUSB_HDRC is not set
+# CONFIG_USB_NET_AX8817X is not set
+# CONFIG_USB_NET_CDCETHER is not set
+# CONFIG_USB_NET_CDC_EEM is not set
+# CONFIG_USB_NET_CDC_NCM is not set
+# CONFIG_USB_NET_CDC_SUBSET is not set
+# CONFIG_USB_NET_CX82310_ETH is not set
+# CONFIG_USB_NET_DM9601 is not set
+# CONFIG_USB_NET_GL620A is not set
+# CONFIG_USB_NET_INT51X1 is not set
+# CONFIG_USB_NET_MCS7830 is not set
+# CONFIG_USB_NET_NET1080 is not set
+# CONFIG_USB_NET_PLUSB is not set
+# CONFIG_USB_NET_RNDIS_HOST is not set
+# CONFIG_USB_NET_RNDIS_WLAN is not set
+# CONFIG_USB_NET_SMSC75XX is not set
+# CONFIG_USB_NET_SMSC95XX is not set
+# CONFIG_USB_NET_ZAURUS is not set
+# CONFIG_USB_OHCI_HCD is not set
+# CONFIG_USB_OHCI_HCD_PCI is not set
+# CONFIG_USB_OHCI_HCD_PPC_OF is not set
+# CONFIG_USB_OHCI_HCD_PPC_OF_BE is not set
+# CONFIG_USB_OHCI_HCD_PPC_OF_LE is not set
+# CONFIG_USB_OHCI_HCD_PPC_SOC is not set
+# CONFIG_USB_OHCI_HCD_SSB is not set
+CONFIG_USB_OHCI_LITTLE_ENDIAN=y
+# CONFIG_USB_OTG is not set
+# CONFIG_USB_OTG_BLACKLIST_HUB is not set
+# CONFIG_USB_OTG_WHITELIST is not set
+# CONFIG_USB_OXU210HP_HCD is not set
+# CONFIG_USB_PEGASUS is not set
+# CONFIG_USB_PRINTER is not set
+# CONFIG_USB_PWC_INPUT_EVDEV is not set
+# CONFIG_USB_R8A66597_HCD is not set
+# CONFIG_USB_RIO500 is not set
+# CONFIG_USB_RTL8150 is not set
+# CONFIG_USB_S2255 is not set
+# CONFIG_USB_SE401 is not set
+# CONFIG_USB_SERIAL is not set
+# CONFIG_USB_SERIAL_AIRCABLE is not set
+# CONFIG_USB_SERIAL_ARK3116 is not set
+# CONFIG_USB_SERIAL_BELKIN is not set
+# CONFIG_USB_SERIAL_CH341 is not set
+# CONFIG_USB_SERIAL_CP210X is not set
+# CONFIG_USB_SERIAL_CYBERJACK is not set
+# CONFIG_USB_SERIAL_CYPRESS_M8 is not set
+# CONFIG_USB_SERIAL_DEBUG is not set
+# CONFIG_USB_SERIAL_DIGI_ACCELEPORT is not set
+# CONFIG_USB_SERIAL_EDGEPORT is not set
+# CONFIG_USB_SERIAL_EDGEPORT_TI is not set
+# CONFIG_USB_SERIAL_EMPEG is not set
+# CONFIG_USB_SERIAL_FTDI_SIO is not set
+# CONFIG_USB_SERIAL_FUNSOFT is not set
+# CONFIG_USB_SERIAL_GARMIN is not set
+CONFIG_USB_SERIAL_GENERIC=y
+# CONFIG_USB_SERIAL_HP4X is not set
+# CONFIG_USB_SERIAL_IPAQ is not set
+# CONFIG_USB_SERIAL_IPW is not set
+# CONFIG_USB_SERIAL_IR is not set
+# CONFIG_USB_SERIAL_IUU is not set
+# CONFIG_USB_SERIAL_KEYSPAN is not set
+CONFIG_USB_SERIAL_KEYSPAN_MPR=y
+# CONFIG_USB_SERIAL_KEYSPAN_PDA is not set
+CONFIG_USB_SERIAL_KEYSPAN_USA18X=y
+CONFIG_USB_SERIAL_KEYSPAN_USA19=y
+CONFIG_USB_SERIAL_KEYSPAN_USA19QI=y
+CONFIG_USB_SERIAL_KEYSPAN_USA19QW=y
+CONFIG_USB_SERIAL_KEYSPAN_USA19W=y
+CONFIG_USB_SERIAL_KEYSPAN_USA28=y
+CONFIG_USB_SERIAL_KEYSPAN_USA28X=y
+CONFIG_USB_SERIAL_KEYSPAN_USA28XA=y
+CONFIG_USB_SERIAL_KEYSPAN_USA28XB=y
+CONFIG_USB_SERIAL_KEYSPAN_USA49W=y
+CONFIG_USB_SERIAL_KEYSPAN_USA49WLC=y
+# CONFIG_USB_SERIAL_KLSI is not set
+# CONFIG_USB_SERIAL_KOBIL_SCT is not set
+# CONFIG_USB_SERIAL_MCT_U232 is not set
+# CONFIG_USB_SERIAL_MOS7720 is not set
+# CONFIG_USB_SERIAL_MOS7840 is not set
+# CONFIG_USB_SERIAL_MOTOROLA is not set
+# CONFIG_USB_SERIAL_NAVMAN is not set
+# CONFIG_USB_SERIAL_OMNINET is not set
+# CONFIG_USB_SERIAL_OPTICON is not set
+# CONFIG_USB_SERIAL_OPTION is not set
+# CONFIG_USB_SERIAL_OTI6858 is not set
+# CONFIG_USB_SERIAL_PL2303 is not set
+# CONFIG_USB_SERIAL_QCAUX is not set
+# CONFIG_USB_SERIAL_QUALCOMM is not set
+# CONFIG_USB_SERIAL_QUATECH2 is not set
+# CONFIG_USB_SERIAL_QUATECH_USB2 is not set
+# CONFIG_USB_SERIAL_SAFE is not set
+CONFIG_USB_SERIAL_SAFE_PADDED=y
+# CONFIG_USB_SERIAL_SAMBA is not set
+# CONFIG_USB_SERIAL_SIEMENS_MPI is not set
+# CONFIG_USB_SERIAL_SIERRAWIRELESS is not set
+# CONFIG_USB_SERIAL_SPCP8X5 is not set
+# CONFIG_USB_SERIAL_SSU100 is not set
+# CONFIG_USB_SERIAL_SYMBOL is not set
+# CONFIG_USB_SERIAL_TI is not set
+# CONFIG_USB_SERIAL_VISOR is not set
+# CONFIG_USB_SERIAL_VIVOPAY_SERIAL is not set
+# CONFIG_USB_SERIAL_WHITEHEAT is not set
+# CONFIG_USB_SERIAL_XIRCOM is not set
+# CONFIG_USB_SERIAL_ZIO is not set
+# CONFIG_USB_SEVSEG is not set
+# CONFIG_USB_SIERRA_NET is not set
+# CONFIG_USB_SISUSBVGA is not set
+# CONFIG_USB_SL811_HCD is not set
+# CONFIG_USB_SN9C102 is not set
+# CONFIG_USB_SPEEDTOUCH is not set
+# CONFIG_USB_STKWEBCAM is not set
+# CONFIG_USB_STORAGE is not set
+CONFIG_USB_STORAGE_ALAUDA=y
+# CONFIG_USB_STORAGE_CYPRESS_ATACB is not set
+# CONFIG_USB_STORAGE_ENE_UB6250 is not set
+CONFIG_USB_STORAGE_DATAFAB=y
+# CONFIG_USB_STORAGE_DEBUG is not set
+# CONFIG_USB_STORAGE_REALTEK is not set
+CONFIG_USB_STORAGE_FREECOM=y
+# CONFIG_USB_STORAGE_ISD200 is not set
+CONFIG_USB_STORAGE_JUMPSHOT=y
+CONFIG_USB_STORAGE_KARMA=y
+# CONFIG_USB_STORAGE_ONETOUCH is not set
+CONFIG_USB_STORAGE_SDDR09=y
+CONFIG_USB_STORAGE_SDDR55=y
+CONFIG_USB_STORAGE_USBAT=y
+# CONFIG_USB_STV06XX is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_USB_SUSPEND is not set
+# CONFIG_USB_TEST is not set
+# CONFIG_USB_TMC is not set
+# CONFIG_USB_TRANCEVIBRATOR is not set
+# CONFIG_USB_UAS is not set
+# CONFIG_USB_UEAGLEATM is not set
+# CONFIG_USB_ULPI is not set
+# CONFIG_USB_USBNET is not set
+# CONFIG_USB_USS720 is not set
+# CONFIG_USB_VICAM is not set
+# CONFIG_USB_VIDEO_CLASS is not set
+CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y
+# CONFIG_USB_VL600 is not set
+# CONFIG_USB_WDM is not set
+# CONFIG_USB_WHCI_HCD is not set
+# CONFIG_USB_WUSB is not set
+# CONFIG_USB_WUSB_CBAF is not set
+# CONFIG_USB_XHCI_HCD is not set
+# CONFIG_USB_XUSBATM is not set
+# CONFIG_USB_YUREX is not set
+# CONFIG_USB_ZD1201 is not set
+# CONFIG_USB_ZR364XX is not set
+# CONFIG_USE_GENERIC_SMP_HELPERS is not set
+# CONFIG_USE_OF is not set
+# CONFIG_UTS_NS is not set
+# CONFIG_UWB is not set
+# CONFIG_V4L_MEM2MEM_DRIVERS is not set
+# CONFIG_VETH is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_VGASTATE is not set
+# CONFIG_VGA_ARB is not set
+# CONFIG_VGA_SWITCHEROO is not set
+# CONFIG_VIA_RHINE is not set
+# CONFIG_VIA_VELOCITY is not set
+# CONFIG_VIDEO_ADV7170 is not set
+# CONFIG_VIDEO_ADV7175 is not set
+# CONFIG_VIDEO_ADV7180 is not set
+# CONFIG_VIDEO_ADV7343 is not set
+# CONFIG_VIDEO_ADV_DEBUG is not set
+# CONFIG_VIDEO_AK881X is not set
+# CONFIG_VIDEO_ALLOW_V4L1 is not set
+# CONFIG_VIDEO_BT819 is not set
+# CONFIG_VIDEO_BT848 is not set
+# CONFIG_VIDEO_BT856 is not set
+# CONFIG_VIDEO_BT866 is not set
+# CONFIG_VIDEO_BWQCAM is not set
+# CONFIG_VIDEO_CAFE_CCIC is not set
+# CONFIG_VIDEO_CAPTURE_DRIVERS is not set
+# CONFIG_VIDEO_CPIA is not set
+# CONFIG_VIDEO_CQCAM is not set
+# CONFIG_VIDEO_CS5345 is not set
+# CONFIG_VIDEO_CS53L32A is not set
+# CONFIG_VIDEO_CX231XX is not set
+# CONFIG_VIDEO_CX2341X is not set
+# CONFIG_VIDEO_CX25840 is not set
+# CONFIG_VIDEO_CX88 is not set
+# CONFIG_VIDEO_DEV is not set
+# CONFIG_VIDEO_DT3155 is not set
+# CONFIG_VIDEO_EM28XX is not set
+# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set
+# CONFIG_VIDEO_GO7007 is not set
+# CONFIG_VIDEO_HDPVR is not set
+# CONFIG_VIDEO_HELPER_CHIPS_AUTO is not set
+# CONFIG_VIDEO_HEXIUM_GEMINI is not set
+# CONFIG_VIDEO_HEXIUM_ORION is not set
+# CONFIG_VIDEO_IR_I2C is not set
+# CONFIG_VIDEO_IVTV is not set
+# CONFIG_VIDEO_KS0127 is not set
+# CONFIG_VIDEO_M52790 is not set
+# CONFIG_VIDEO_MEDIA is not set
+# CONFIG_VIDEO_MSP3400 is not set
+# CONFIG_VIDEO_MT9V011 is not set
+# CONFIG_VIDEO_MXB is not set
+# CONFIG_VIDEO_NOON010PC30 is not set
+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
+# CONFIG_VIDEO_OV7670 is not set
+# CONFIG_VIDEO_PMS is not set
+# CONFIG_VIDEO_PVRUSB2 is not set
+# CONFIG_VIDEO_SAA5246A is not set
+# CONFIG_VIDEO_SAA5249 is not set
+# CONFIG_VIDEO_SAA6588 is not set
+# CONFIG_VIDEO_SAA7110 is not set
+# CONFIG_VIDEO_SAA711X is not set
+# CONFIG_VIDEO_SAA7127 is not set
+# CONFIG_VIDEO_SAA7134 is not set
+# CONFIG_VIDEO_SAA717X is not set
+# CONFIG_VIDEO_SAA7185 is not set
+# CONFIG_VIDEO_SAA7191 is not set
+# CONFIG_VIDEO_SH_MOBILE_CEU is not set
+# CONFIG_VIDEO_SR030PC30 is not set
+# CONFIG_VIDEO_STRADIS is not set
+# CONFIG_VIDEO_TCM825X is not set
+# CONFIG_VIDEO_TDA7432 is not set
+# CONFIG_VIDEO_TDA9840 is not set
+# CONFIG_VIDEO_TDA9875 is not set
+# CONFIG_VIDEO_TEA6415C is not set
+# CONFIG_VIDEO_TEA6420 is not set
+# CONFIG_VIDEO_THS7303 is not set
+# CONFIG_VIDEO_TIMBERDALE is not set
+# CONFIG_VIDEO_TLV320AIC23B is not set
+# CONFIG_VIDEO_TM6000 is not set
+# CONFIG_VIDEO_TVAUDIO is not set
+# CONFIG_VIDEO_TVP514X is not set
+# CONFIG_VIDEO_TVP5150 is not set
+# CONFIG_VIDEO_TVP7002 is not set
+# CONFIG_VIDEO_UPD64031A is not set
+# CONFIG_VIDEO_UPD64083 is not set
+# CONFIG_VIDEO_USBVISION is not set
+# CONFIG_VIDEO_V4L1 is not set
+CONFIG_VIDEO_V4L1_COMPAT=y
+# CONFIG_VIDEO_V4L2 is not set
+# CONFIG_VIDEO_V4L2_COMMON is not set
+# CONFIG_VIDEO_VIVI is not set
+# CONFIG_VIDEO_VP27SMPX is not set
+# CONFIG_VIDEO_VPX3220 is not set
+# CONFIG_VIDEO_WM8739 is not set
+# CONFIG_VIDEO_WM8775 is not set
+# CONFIG_VIDEO_ZORAN is not set
+# CONFIG_VIRQ_DEBUG is not set
+# CONFIG_VIRTUALIZATION is not set
+CONFIG_VIRT_TO_BUS=y
+# CONFIG_VITESSE_PHY is not set
+CONFIG_VLAN_8021Q=y
+# CONFIG_VLAN_8021Q_GVRP is not set
+# CONFIG_VME_BUS is not set
+# CONFIG_VMSPLIT_1G is not set
+# CONFIG_VMSPLIT_2G is not set
+# CONFIG_VMSPLIT_2G_OPT is not set
+CONFIG_VMSPLIT_3G=y
+# CONFIG_VMSPLIT_3G_OPT is not set
+# CONFIG_VMXNET3 is not set
+# CONFIG_VM_EVENT_COUNTERS is not set
+# CONFIG_VT is not set
+# CONFIG_VT6655 is not set
+# CONFIG_VT6656 is not set
+# CONFIG_VXFS_FS is not set
+# CONFIG_W1 is not set
+# CONFIG_W1_CON is not set
+# CONFIG_W1_MASTER_DS1WM is not set
+# CONFIG_W1_MASTER_DS2482 is not set
+# CONFIG_W1_MASTER_DS2490 is not set
+# CONFIG_W1_MASTER_GPIO is not set
+# CONFIG_W1_MASTER_MATROX is not set
+# CONFIG_W1_SLAVE_BQ27000 is not set
+# CONFIG_W1_SLAVE_DS2408 is not set
+# CONFIG_W1_SLAVE_DS2423 is not set
+# CONFIG_W1_SLAVE_DS2431 is not set
+# CONFIG_W1_SLAVE_DS2433 is not set
+# CONFIG_W1_SLAVE_DS2760 is not set
+# CONFIG_W1_SLAVE_DS2780 is not set
+# CONFIG_W1_SLAVE_SMEM is not set
+# CONFIG_W1_SLAVE_THERM is not set
+# CONFIG_W83627HF_WDT is not set
+# CONFIG_W83697HF_WDT is not set
+# CONFIG_W83877F_WDT is not set
+# CONFIG_W83977F_WDT is not set
+# CONFIG_WAN is not set
+# CONFIG_WANXL is not set
+# CONFIG_WAN_ROUTER is not set
+CONFIG_WATCHDOG=y
+# CONFIG_WATCHDOG_NOWAYOUT is not set
+# CONFIG_WDTPCI is not set
+CONFIG_WEXT_CORE=y
+CONFIG_WEXT_PRIV=y
+CONFIG_WEXT_PROC=y
+CONFIG_WEXT_SPY=y
+# CONFIG_WIMAX is not set
+CONFIG_WIRELESS=y
+CONFIG_WIRELESS_EXT=y
+# CONFIG_WIRELESS_EXT_SYSFS is not set
+# CONFIG_WLAGS49_H2 is not set
+# CONFIG_WLAGS49_H25 is not set
+CONFIG_WLAN=y
+# CONFIG_WORKQUEUE_TRACER is not set
+# CONFIG_WR_PPMC is not set
+# CONFIG_X25 is not set
+CONFIG_XFRM=y
+# CONFIG_XFRM_IPCOMP is not set
+# CONFIG_XFRM_MIGRATE is not set
+# CONFIG_XFRM_STATISTICS is not set
+# CONFIG_XFRM_SUB_POLICY is not set
+# CONFIG_XFRM_USER is not set
+# CONFIG_XFS_DEBUG is not set
+# CONFIG_XFS_FS is not set
+# CONFIG_XFS_POSIX_ACL is not set
+# CONFIG_XFS_QUOTA is not set
+# CONFIG_XFS_RT is not set
+# CONFIG_XILINX_EMACLITE is not set
+# CONFIG_XILINX_LL_TEMAC is not set
+# CONFIG_XIP_KERNEL is not set
+# CONFIG_XMON is not set
+# CONFIG_XVMALLOC is not set
+# CONFIG_XZ_DEC is not set
+# CONFIG_XZ_DEC_ARM is not set
+# CONFIG_XZ_DEC_ARMTHUMB is not set
+# CONFIG_XZ_DEC_BCJ is not set
+# CONFIG_XZ_DEC_IA64 is not set
+# CONFIG_XZ_DEC_POWERPC is not set
+# CONFIG_XZ_DEC_SPARC is not set
+# CONFIG_XZ_DEC_TEST is not set
+# CONFIG_XZ_DEC_X86 is not set
+# CONFIG_YAFFS_FS is not set
+# CONFIG_YAM is not set
+# CONFIG_YELLOWFIN is not set
+# CONFIG_YENTA is not set
+# CONFIG_YENTA_O2 is not set
+# CONFIG_YENTA_RICOH is not set
+# CONFIG_YENTA_TI is not set
+# CONFIG_YENTA_TOSHIBA is not set
+# CONFIG_ZD1211RW is not set
+# CONFIG_ZD1211RW_DEBUG is not set
+# CONFIG_ZEROPLUS_FF is not set
+CONFIG_ZISOFS=y
+CONFIG_ZLIB_DEFLATE=y
+CONFIG_ZLIB_INFLATE=y
+CONFIG_ZONE_DMA=y
+CONFIG_ZONE_DMA_FLAG=1
+# CONFIG_ZRAM is not set
+# CONFIG_SIGMA is not set

diff --git a/target/linux/generic/patches-3.0/010-mips_wire_up_new_sendmmsg_syscall.patch b/target/linux/generic/patches-3.0/010-mips_wire_up_new_sendmmsg_syscall.patch
new file mode 100644 (file)
index 0000000..ae9117a
--- /dev/null
+++ b/target/linux/generic/patches-3.0/010-mips_wire_up_new_sendmmsg_syscall.patch
@@ -0,0 +1,61 @@
+--- a/arch/mips/include/asm/unistd.h
++++ b/arch/mips/include/asm/unistd.h
+@@ -363,17 +363,18 @@
+ #define __NR_open_by_handle_at                (__NR_Linux + 340)
+ #define __NR_clock_adjtime            (__NR_Linux + 341)
+ #define __NR_syncfs                   (__NR_Linux + 342)
+-#define __NR_setns                    (__NR_Linux + 343)
++#define __NR_sendmmsg                 (__NR_Linux + 343)
++#define __NR_setns                    (__NR_Linux + 344)
+ 
+ /*
+  * Offset of the last Linux o32 flavoured syscall
+  */
+-#define __NR_Linux_syscalls           343
++#define __NR_Linux_syscalls           344
+ 
+ #endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
+ 
+ #define __NR_O32_Linux                        4000
+-#define __NR_O32_Linux_syscalls               343
++#define __NR_O32_Linux_syscalls               344
+ 
+ #if _MIPS_SIM == _MIPS_SIM_ABI64
+ 
+--- a/arch/mips/kernel/scall32-o32.S
++++ b/arch/mips/kernel/scall32-o32.S
+@@ -589,6 +589,7 @@ einval:    li      v0, -ENOSYS
+       sys     sys_open_by_handle_at   3       /* 4340 */
+       sys     sys_clock_adjtime       2
+       sys     sys_syncfs              1
++      sys     sys_sendmmsg            4
+       sys     sys_setns               2
+       .endm
+ 
+--- a/arch/mips/kernel/scall64-64.S
++++ b/arch/mips/kernel/scall64-64.S
+@@ -428,5 +428,6 @@ sys_call_table:
+       PTR     sys_open_by_handle_at
+       PTR     sys_clock_adjtime               /* 5300 */
+       PTR     sys_syncfs
++      PTR     sys_sendmmsg
+       PTR     sys_setns
+       .size   sys_call_table,.-sys_call_table
+--- a/arch/mips/kernel/scall64-n32.S
++++ b/arch/mips/kernel/scall64-n32.S
+@@ -428,5 +428,6 @@ EXPORT(sysn32_call_table)
+       PTR     sys_open_by_handle_at
+       PTR     compat_sys_clock_adjtime        /* 6305 */
+       PTR     sys_syncfs
++      PTR     compat_sys_sendmmsg
+       PTR     sys_setns
+       .size   sysn32_call_table,.-sysn32_call_table
+--- a/arch/mips/kernel/scall64-o32.S
++++ b/arch/mips/kernel/scall64-o32.S
+@@ -546,5 +546,6 @@ sys_call_table:
+       PTR     compat_sys_open_by_handle_at    /* 4340 */
+       PTR     compat_sys_clock_adjtime
+       PTR     sys_syncfs
++      PTR     compat_sys_sendmmsg
+       PTR     sys_setns
+       .size   sys_call_table,.-sys_call_table

diff --git a/target/linux/generic/patches-3.0/100-overlayfs_v10.patch b/target/linux/generic/patches-3.0/100-overlayfs_v10.patch
new file mode 100644 (file)
index 0000000..32a628f
--- /dev/null
+++ b/target/linux/generic/patches-3.0/100-overlayfs_v10.patch
@@ -0,0 +1,3073 @@
+--- a/fs/open.c
++++ b/fs/open.c
+@@ -666,8 +666,7 @@ static inline int __get_file_write_acces
+       return error;
+ }
+ 
+-static struct file *__dentry_open(struct dentry *dentry, struct vfsmount *mnt,
+-                                      struct file *f,
++static struct file *__dentry_open(struct path *path, struct file *f,
+                                       int (*open)(struct inode *, struct file *),
+                                       const struct cred *cred)
+ {
+@@ -675,15 +674,16 @@ static struct file *__dentry_open(struct
+       struct inode *inode;
+       int error;
+ 
++      path_get(path);
+       f->f_mode = OPEN_FMODE(f->f_flags) | FMODE_LSEEK |
+                               FMODE_PREAD | FMODE_PWRITE;
+ 
+       if (unlikely(f->f_flags & O_PATH))
+               f->f_mode = FMODE_PATH;
+ 
+-      inode = dentry->d_inode;
++      inode = path->dentry->d_inode;
+       if (f->f_mode & FMODE_WRITE) {
+-              error = __get_file_write_access(inode, mnt);
++              error = __get_file_write_access(inode, path->mnt);
+               if (error)
+                       goto cleanup_file;
+               if (!special_file(inode->i_mode))
+@@ -691,8 +691,7 @@ static struct file *__dentry_open(struct
+       }
+ 
+       f->f_mapping = inode->i_mapping;
+-      f->f_path.dentry = dentry;
+-      f->f_path.mnt = mnt;
++      f->f_path = *path;
+       f->f_pos = 0;
+       file_sb_list_add(f, inode->i_sb);
+ 
+@@ -745,7 +744,7 @@ cleanup_all:
+                        * here, so just reset the state.
+                        */
+                       file_reset_write(f);
+-                      mnt_drop_write(mnt);
++                      mnt_drop_write(path->mnt);
+               }
+       }
+       file_sb_list_del(f);
+@@ -753,8 +752,7 @@ cleanup_all:
+       f->f_path.mnt = NULL;
+ cleanup_file:
+       put_filp(f);
+-      dput(dentry);
+-      mntput(mnt);
++      path_put(path);
+       return ERR_PTR(error);
+ }
+ 
+@@ -780,14 +778,14 @@ cleanup_file:
+ struct file *lookup_instantiate_filp(struct nameidata *nd, struct dentry *dentry,
+               int (*open)(struct inode *, struct file *))
+ {
++      struct path path = { .dentry = dentry, .mnt = nd->path.mnt };
+       const struct cred *cred = current_cred();
+ 
+       if (IS_ERR(nd->intent.open.file))
+               goto out;
+       if (IS_ERR(dentry))
+               goto out_err;
+-      nd->intent.open.file = __dentry_open(dget(dentry), mntget(nd->path.mnt),
+-                                           nd->intent.open.file,
++      nd->intent.open.file = __dentry_open(&path, nd->intent.open.file,
+                                            open, cred);
+ out:
+       return nd->intent.open.file;
+@@ -816,10 +814,17 @@ struct file *nameidata_to_filp(struct na
+ 
+       /* Has the filesystem initialised the file for us? */
+       if (filp->f_path.dentry == NULL) {
+-              path_get(&nd->path);
+-              filp = __dentry_open(nd->path.dentry, nd->path.mnt, filp,
+-                                   NULL, cred);
++              struct inode *inode = nd->path.dentry->d_inode;
++
++              if (inode->i_op->open) {
++                      int flags = filp->f_flags;
++                      put_filp(filp);
++                      filp = inode->i_op->open(nd->path.dentry, flags, cred);
++              } else {
++                      filp = __dentry_open(&nd->path, filp, NULL, cred);
++              }
+       }
++
+       return filp;
+ }
+ 
+@@ -830,26 +835,45 @@ struct file *nameidata_to_filp(struct na
+ struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags,
+                        const struct cred *cred)
+ {
+-      int error;
+-      struct file *f;
+-
+-      validate_creds(cred);
++      struct path path = { .dentry = dentry, .mnt = mnt };
++      struct file *ret;
+ 
+       /* We must always pass in a valid mount pointer. */
+       BUG_ON(!mnt);
+ 
+-      error = -ENFILE;
++      ret = vfs_open(&path, flags, cred);
++      path_put(&path);
++
++      return ret;
++}
++EXPORT_SYMBOL(dentry_open);
++
++/**
++ * vfs_open - open the file at the given path
++ * @path: path to open
++ * @flags: open flags
++ * @cred: credentials to use
++ *
++ * Open the file.  If successful, the returned file will have acquired
++ * an additional reference for path.
++ */
++struct file *vfs_open(struct path *path, int flags, const struct cred *cred)
++{
++      struct file *f;
++      struct inode *inode = path->dentry->d_inode;
++
++      validate_creds(cred);
++
++      if (inode->i_op->open)
++              return inode->i_op->open(path->dentry, flags, cred);
+       f = get_empty_filp();
+-      if (f == NULL) {
+-              dput(dentry);
+-              mntput(mnt);
+-              return ERR_PTR(error);
+-      }
++      if (f == NULL)
++              return ERR_PTR(-ENFILE);
+ 
+       f->f_flags = flags;
+-      return __dentry_open(dentry, mnt, f, NULL, cred);
++      return __dentry_open(path, f, NULL, cred);
+ }
+-EXPORT_SYMBOL(dentry_open);
++EXPORT_SYMBOL(vfs_open);
+ 
+ static void __put_unused_fd(struct files_struct *files, unsigned int fd)
+ {
+--- a/include/linux/fs.h
++++ b/include/linux/fs.h
+@@ -1602,6 +1602,7 @@ struct inode_operations {
+       void (*truncate_range)(struct inode *, loff_t, loff_t);
+       int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start,
+                     u64 len);
++      struct file *(*open)(struct dentry *, int flags, const struct cred *);
+ } ____cacheline_aligned;
+ 
+ struct seq_file;
+@@ -1996,6 +1997,7 @@ extern long do_sys_open(int dfd, const c
+ extern struct file *filp_open(const char *, int, int);
+ extern struct file *file_open_root(struct dentry *, struct vfsmount *,
+                                  const char *, int);
++extern struct file *vfs_open(struct path *, int flags, const struct cred *);
+ extern struct file * dentry_open(struct dentry *, struct vfsmount *, int,
+                                const struct cred *);
+ extern int filp_close(struct file *, fl_owner_t id);
+--- a/fs/splice.c
++++ b/fs/splice.c
+@@ -1300,6 +1300,7 @@ long do_splice_direct(struct file *in, l
+ 
+       return ret;
+ }
++EXPORT_SYMBOL(do_splice_direct);
+ 
+ static int splice_pipe_to_pipe(struct pipe_inode_info *ipipe,
+                              struct pipe_inode_info *opipe,
+--- a/fs/namespace.c
++++ b/fs/namespace.c
+@@ -1494,6 +1494,23 @@ void drop_collected_mounts(struct vfsmou
+       release_mounts(&umount_list);
+ }
+ 
++struct vfsmount *clone_private_mount(struct path *path)
++{
++      struct vfsmount *mnt;
++
++      if (IS_MNT_UNBINDABLE(path->mnt))
++              return ERR_PTR(-EINVAL);
++
++      down_read(&namespace_sem);
++      mnt = clone_mnt(path->mnt, path->dentry, CL_PRIVATE);
++      up_read(&namespace_sem);
++      if (!mnt)
++              return ERR_PTR(-ENOMEM);
++
++      return mnt;
++}
++EXPORT_SYMBOL_GPL(clone_private_mount);
++
+ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg,
+                  struct vfsmount *root)
+ {
+--- a/include/linux/mount.h
++++ b/include/linux/mount.h
+@@ -100,6 +100,9 @@ extern void mnt_pin(struct vfsmount *mnt
+ extern void mnt_unpin(struct vfsmount *mnt);
+ extern int __mnt_is_readonly(struct vfsmount *mnt);
+ 
++struct path;
++extern struct vfsmount *clone_private_mount(struct path *path);
++
+ extern struct vfsmount *do_kern_mount(const char *fstype, int flags,
+                                     const char *name, void *data);
+ 
+--- a/fs/Kconfig
++++ b/fs/Kconfig
+@@ -63,6 +63,7 @@ source "fs/quota/Kconfig"
+ 
+ source "fs/autofs4/Kconfig"
+ source "fs/fuse/Kconfig"
++source "fs/overlayfs/Kconfig"
+ 
+ config CUSE
+       tristate "Character device in Userspace support"
+--- a/fs/Makefile
++++ b/fs/Makefile
+@@ -105,6 +105,7 @@ obj-$(CONFIG_QNX4FS_FS)            += qnx4/
+ obj-$(CONFIG_AUTOFS4_FS)      += autofs4/
+ obj-$(CONFIG_ADFS_FS)         += adfs/
+ obj-$(CONFIG_FUSE_FS)         += fuse/
++obj-$(CONFIG_OVERLAYFS_FS)    += overlayfs/
+ obj-$(CONFIG_UDF_FS)          += udf/
+ obj-$(CONFIG_SUN_OPENPROMFS)  += openpromfs/
+ obj-$(CONFIG_OMFS_FS)         += omfs/
+--- /dev/null
++++ b/fs/overlayfs/Kconfig
+@@ -0,0 +1,4 @@
++config OVERLAYFS_FS
++      tristate "Overlay filesystem support"
++      help
++        Add support for overlay filesystem.
+--- /dev/null
++++ b/fs/overlayfs/Makefile
+@@ -0,0 +1,7 @@
++#
++# Makefile for the overlay filesystem.
++#
++
++obj-$(CONFIG_OVERLAYFS_FS) += overlayfs.o
++
++overlayfs-objs := super.o inode.o dir.o readdir.o copy_up.o
+--- /dev/null
++++ b/fs/overlayfs/copy_up.c
+@@ -0,0 +1,383 @@
++/*
++ *
++ * Copyright (C) 2011 Novell Inc.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ */
++
++#include <linux/fs.h>
++#include <linux/slab.h>
++#include <linux/file.h>
++#include <linux/splice.h>
++#include <linux/xattr.h>
++#include <linux/security.h>
++#include <linux/uaccess.h>
++#include "overlayfs.h"
++
++#define OVL_COPY_UP_CHUNK_SIZE (1 << 20)
++
++static int ovl_copy_up_xattr(struct dentry *old, struct dentry *new)
++{
++      ssize_t list_size, size;
++      char *buf, *name, *value;
++      int error;
++
++      if (!old->d_inode->i_op->getxattr ||
++          !new->d_inode->i_op->getxattr)
++              return 0;
++
++      list_size = vfs_listxattr(old, NULL, 0);
++      if (list_size <= 0) {
++              if (list_size == -EOPNOTSUPP)
++                      return 0;
++              return list_size;
++      }
++
++      buf = kzalloc(list_size, GFP_KERNEL);
++      if (!buf)
++              return -ENOMEM;
++
++      error = -ENOMEM;
++      value = kmalloc(XATTR_SIZE_MAX, GFP_KERNEL);
++      if (!value)
++              goto out;
++
++      list_size = vfs_listxattr(old, buf, list_size);
++      if (list_size <= 0) {
++              error = list_size;
++              goto out_free_value;
++      }
++
++      for (name = buf; name < (buf + list_size); name += strlen(name) + 1) {
++              size = vfs_getxattr(old, name, value, XATTR_SIZE_MAX);
++              if (size <= 0) {
++                      error = size;
++                      goto out_free_value;
++              }
++              error = vfs_setxattr(new, name, value, size, 0);
++              if (error)
++                      goto out_free_value;
++      }
++
++out_free_value:
++      kfree(value);
++out:
++      kfree(buf);
++      return error;
++}
++
++static int ovl_copy_up_data(struct path *old, struct path *new, loff_t len)
++{
++      struct file *old_file;
++      struct file *new_file;
++      int error = 0;
++
++      if (len == 0)
++              return 0;
++
++      old_file = vfs_open(old, O_RDONLY, current_cred());
++      if (IS_ERR(old_file))
++              return PTR_ERR(old_file);
++
++      new_file = vfs_open(new, O_WRONLY, current_cred());
++      if (IS_ERR(new_file)) {
++              error = PTR_ERR(new_file);
++              goto out_fput;
++      }
++
++      /* FIXME: copy up sparse files efficiently */
++      while (len) {
++              loff_t offset = new_file->f_pos;
++              size_t this_len = OVL_COPY_UP_CHUNK_SIZE;
++              long bytes;
++
++              if (len < this_len)
++                      this_len = len;
++
++              if (signal_pending_state(TASK_KILLABLE, current)) {
++                      error = -EINTR;
++                      break;
++              }
++
++              bytes = do_splice_direct(old_file, &offset, new_file, this_len,
++                               SPLICE_F_MOVE);
++              if (bytes <= 0) {
++                      error = bytes;
++                      break;
++              }
++
++              len -= bytes;
++      }
++
++      fput(new_file);
++out_fput:
++      fput(old_file);
++      return error;
++}
++
++static char *ovl_read_symlink(struct dentry *realdentry)
++{
++      int res;
++      char *buf;
++      struct inode *inode = realdentry->d_inode;
++      mm_segment_t old_fs;
++
++      res = -EINVAL;
++      if (!inode->i_op->readlink)
++              goto err;
++
++      res = -ENOMEM;
++      buf = (char *) __get_free_page(GFP_KERNEL);
++      if (!buf)
++              goto err;
++
++      old_fs = get_fs();
++      set_fs(get_ds());
++      /* The cast to a user pointer is valid due to the set_fs() */
++      res = inode->i_op->readlink(realdentry,
++                                  (char __user *)buf, PAGE_SIZE - 1);
++      set_fs(old_fs);
++      if (res < 0) {
++              free_page((unsigned long) buf);
++              goto err;
++      }
++      buf[res] = '\0';
++
++      return buf;
++
++err:
++      return ERR_PTR(res);
++}
++
++static int ovl_set_timestamps(struct dentry *upperdentry, struct kstat *stat)
++{
++      struct iattr attr = {
++              .ia_valid = ATTR_ATIME | ATTR_MTIME | ATTR_ATIME_SET | ATTR_MTIME_SET,
++              .ia_atime = stat->atime,
++              .ia_mtime = stat->mtime,
++      };
++
++      return notify_change(upperdentry, &attr);
++}
++
++static int ovl_set_mode(struct dentry *upperdentry, umode_t mode)
++{
++      struct iattr attr = {
++              .ia_valid = ATTR_MODE,
++              .ia_mode = mode,
++      };
++
++      return notify_change(upperdentry, &attr);
++}
++
++static int ovl_copy_up_locked(struct dentry *upperdir, struct dentry *dentry,
++                            struct path *lowerpath, struct kstat *stat,
++                            const char *link)
++{
++      int err;
++      struct path newpath;
++      umode_t mode = stat->mode;
++
++      /* Can't properly set mode on creation because of the umask */
++      stat->mode &= S_IFMT;
++
++      ovl_path_upper(dentry, &newpath);
++      WARN_ON(newpath.dentry);
++      newpath.dentry = ovl_upper_create(upperdir, dentry, stat, link);
++      if (IS_ERR(newpath.dentry))
++              return PTR_ERR(newpath.dentry);
++
++      if (S_ISREG(stat->mode)) {
++              err = ovl_copy_up_data(lowerpath, &newpath, stat->size);
++              if (err)
++                      goto err_remove;
++      }
++
++      err = ovl_copy_up_xattr(lowerpath->dentry, newpath.dentry);
++      if (err)
++              goto err_remove;
++
++      mutex_lock(&newpath.dentry->d_inode->i_mutex);
++      if (!S_ISLNK(stat->mode))
++              err = ovl_set_mode(newpath.dentry, mode);
++      if (!err)
++              err = ovl_set_timestamps(newpath.dentry, stat);
++      mutex_unlock(&newpath.dentry->d_inode->i_mutex);
++      if (err)
++              goto err_remove;
++
++      ovl_dentry_update(dentry, newpath.dentry);
++
++      /*
++       * Easiest way to get rid of the lower dentry reference is to
++       * drop this dentry.  This is neither needed nor possible for
++       * directories.
++       */
++      if (!S_ISDIR(stat->mode))
++              d_drop(dentry);
++
++      return 0;
++
++err_remove:
++      if (S_ISDIR(stat->mode))
++              vfs_rmdir(upperdir->d_inode, newpath.dentry);
++      else
++              vfs_unlink(upperdir->d_inode, newpath.dentry);
++
++      dput(newpath.dentry);
++
++      return err;
++}
++
++/*
++ * Copy up a single dentry
++ *
++ * Directory renames only allowed on "pure upper" (already created on
++ * upper filesystem, never copied up).  Directories which are on lower or
++ * are merged may not be renamed.  For these -EXDEV is returned and
++ * userspace has to deal with it.  This means, when copying up a
++ * directory we can rely on it and ancestors being stable.
++ *
++ * Non-directory renames start with copy up of source if necessary.  The
++ * actual rename will only proceed once the copy up was successful.  Copy
++ * up uses upper parent i_mutex for exclusion.  Since rename can change
++ * d_parent it is possible that the copy up will lock the old parent.  At
++ * that point the file will have already been copied up anyway.
++ */
++static int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry,
++                         struct path *lowerpath, struct kstat *stat)
++{
++      int err;
++      struct kstat pstat;
++      struct path parentpath;
++      struct dentry *upperdir;
++      const struct cred *old_cred;
++      struct cred *override_cred;
++      char *link = NULL;
++
++      ovl_path_upper(parent, &parentpath);
++      upperdir = parentpath.dentry;
++
++      err = vfs_getattr(parentpath.mnt, parentpath.dentry, &pstat);
++      if (err)
++              return err;
++
++      if (S_ISLNK(stat->mode)) {
++              link = ovl_read_symlink(lowerpath->dentry);
++              if (IS_ERR(link))
++                      return PTR_ERR(link);
++      }
++
++      err = -ENOMEM;
++      override_cred = prepare_creds();
++      if (!override_cred)
++              goto out_free_link;
++
++      override_cred->fsuid = stat->uid;
++      override_cred->fsgid = stat->gid;
++      /*
++       * CAP_SYS_ADMIN for copying up extended attributes
++       * CAP_DAC_OVERRIDE for create
++       * CAP_FOWNER for chmod, timestamp update
++       * CAP_FSETID for chmod
++       * CAP_MKNOD for mknod
++       */
++      cap_raise(override_cred->cap_effective, CAP_SYS_ADMIN);
++      cap_raise(override_cred->cap_effective, CAP_DAC_OVERRIDE);
++      cap_raise(override_cred->cap_effective, CAP_FOWNER);
++      cap_raise(override_cred->cap_effective, CAP_FSETID);
++      cap_raise(override_cred->cap_effective, CAP_MKNOD);
++      old_cred = override_creds(override_cred);
++
++      mutex_lock_nested(&upperdir->d_inode->i_mutex, I_MUTEX_PARENT);
++      if (ovl_path_type(dentry) != OVL_PATH_LOWER) {
++              err = 0;
++      } else {
++              err = ovl_copy_up_locked(upperdir, dentry, lowerpath,
++                                       stat, link);
++              if (!err) {
++                      /* Restore timestamps on parent (best effort) */
++                      ovl_set_timestamps(upperdir, &pstat);
++              }
++      }
++
++      mutex_unlock(&upperdir->d_inode->i_mutex);
++
++      revert_creds(old_cred);
++      put_cred(override_cred);
++
++out_free_link:
++      if (link)
++              free_page((unsigned long) link);
++
++      return err;
++}
++
++int ovl_copy_up(struct dentry *dentry)
++{
++      int err;
++
++      err = 0;
++      while (!err) {
++              struct dentry *next;
++              struct dentry *parent;
++              struct path lowerpath;
++              struct kstat stat;
++              enum ovl_path_type type = ovl_path_type(dentry);
++
++              if (type != OVL_PATH_LOWER)
++                      break;
++
++              next = dget(dentry);
++              /* find the topmost dentry not yet copied up */
++              for (;;) {
++                      parent = dget_parent(next);
++
++                      type = ovl_path_type(parent);
++                      if (type != OVL_PATH_LOWER)
++                              break;
++
++                      dput(next);
++                      next = parent;
++              }
++
++              ovl_path_lower(next, &lowerpath);
++              err = vfs_getattr(lowerpath.mnt, lowerpath.dentry, &stat);
++              if (!err)
++                      err = ovl_copy_up_one(parent, next, &lowerpath, &stat);
++
++              dput(parent);
++              dput(next);
++      }
++
++      return err;
++}
++
++/* Optimize by not copying up the file first and truncating later */
++int ovl_copy_up_truncate(struct dentry *dentry, loff_t size)
++{
++      int err;
++      struct kstat stat;
++      struct path lowerpath;
++      struct dentry *parent = dget_parent(dentry);
++
++      err = ovl_copy_up(parent);
++      if (err)
++              goto out_dput_parent;
++
++      ovl_path_lower(dentry, &lowerpath);
++      err = vfs_getattr(lowerpath.mnt, lowerpath.dentry, &stat);
++      if (err)
++              goto out_dput_parent;
++
++      if (size < stat.size)
++              stat.size = size;
++
++      err = ovl_copy_up_one(parent, dentry, &lowerpath, &stat);
++
++out_dput_parent:
++      dput(parent);
++      return err;
++}
+--- /dev/null
++++ b/fs/overlayfs/dir.c
+@@ -0,0 +1,607 @@
++/*
++ *
++ * Copyright (C) 2011 Novell Inc.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ */
++
++#include <linux/fs.h>
++#include <linux/namei.h>
++#include <linux/xattr.h>
++#include <linux/security.h>
++#include "overlayfs.h"
++
++static const char *ovl_whiteout_symlink = "(overlay-whiteout)";
++
++static struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
++                               struct nameidata *nd)
++{
++      int err = ovl_do_lookup(dentry);
++
++      if (err)
++              return ERR_PTR(err);
++
++      return NULL;
++}
++
++static int ovl_whiteout(struct dentry *upperdir, struct dentry *dentry)
++{
++      int err;
++      struct dentry *newdentry;
++      const struct cred *old_cred;
++      struct cred *override_cred;
++
++      /* FIXME: recheck lower dentry to see if whiteout is really needed */
++
++      err = -ENOMEM;
++      override_cred = prepare_creds();
++      if (!override_cred)
++              goto out;
++
++      /*
++       * CAP_SYS_ADMIN for setxattr
++       * CAP_DAC_OVERRIDE for symlink creation
++       * CAP_FOWNER for unlink in sticky directory
++       */
++      cap_raise(override_cred->cap_effective, CAP_SYS_ADMIN);
++      cap_raise(override_cred->cap_effective, CAP_DAC_OVERRIDE);
++      cap_raise(override_cred->cap_effective, CAP_FOWNER);
++      override_cred->fsuid = 0;
++      override_cred->fsgid = 0;
++      old_cred = override_creds(override_cred);
++
++      newdentry = lookup_one_len(dentry->d_name.name, upperdir,
++                                 dentry->d_name.len);
++      err = PTR_ERR(newdentry);
++      if (IS_ERR(newdentry))
++              goto out_put_cred;
++
++      /* Just been removed within the same locked region */
++      WARN_ON(newdentry->d_inode);
++
++      err = vfs_symlink(upperdir->d_inode, newdentry, ovl_whiteout_symlink);
++      if (err)
++              goto out_dput;
++
++      ovl_dentry_version_inc(dentry->d_parent);
++
++      err = vfs_setxattr(newdentry, ovl_whiteout_xattr, "y", 1, 0);
++      if (err)
++              vfs_unlink(upperdir->d_inode, newdentry);
++
++out_dput:
++      dput(newdentry);
++out_put_cred:
++      revert_creds(old_cred);
++      put_cred(override_cred);
++out:
++      if (err) {
++              /*
++               * There's no way to recover from failure to whiteout.
++               * What should we do?  Log a big fat error and... ?
++               */
++              printk(KERN_ERR "overlayfs: ERROR - failed to whiteout '%s'\n",
++                     dentry->d_name.name);
++      }
++
++      return err;
++}
++
++static struct dentry *ovl_lookup_create(struct dentry *upperdir,
++                                      struct dentry *template)
++{
++      int err;
++      struct dentry *newdentry;
++      struct qstr *name = &template->d_name;
++
++      newdentry = lookup_one_len(name->name, upperdir, name->len);
++      if (IS_ERR(newdentry))
++              return newdentry;
++
++      if (newdentry->d_inode) {
++              const struct cred *old_cred;
++              struct cred *override_cred;
++
++              /* No need to check whiteout if lower parent is non-existent */
++              err = -EEXIST;
++              if (!ovl_dentry_lower(template->d_parent))
++                      goto out_dput;
++
++              if (!S_ISLNK(newdentry->d_inode->i_mode))
++                      goto out_dput;
++
++              err = -ENOMEM;
++              override_cred = prepare_creds();
++              if (!override_cred)
++                      goto out_dput;
++
++              /*
++               * CAP_SYS_ADMIN for getxattr
++               * CAP_FOWNER for unlink in sticky directory
++               */
++              cap_raise(override_cred->cap_effective, CAP_SYS_ADMIN);
++              cap_raise(override_cred->cap_effective, CAP_FOWNER);
++              old_cred = override_creds(override_cred);
++
++              err = -EEXIST;
++              if (ovl_is_whiteout(newdentry))
++                      err = vfs_unlink(upperdir->d_inode, newdentry);
++
++              revert_creds(old_cred);
++              put_cred(override_cred);
++              if (err)
++                      goto out_dput;
++
++              dput(newdentry);
++              newdentry = lookup_one_len(name->name, upperdir, name->len);
++              if (IS_ERR(newdentry)) {
++                      ovl_whiteout(upperdir, template);
++                      return newdentry;
++              }
++
++              /*
++               * Whiteout just been successfully removed, parent
++               * i_mutex is still held, there's no way the lookup
++               * could return positive.
++               */
++              WARN_ON(newdentry->d_inode);
++      }
++
++      return newdentry;
++
++out_dput:
++      dput(newdentry);
++      return ERR_PTR(err);
++}
++
++struct dentry *ovl_upper_create(struct dentry *upperdir, struct dentry *dentry,
++                              struct kstat *stat, const char *link)
++{
++      int err;
++      struct dentry *newdentry;
++      struct inode *dir = upperdir->d_inode;
++
++      newdentry = ovl_lookup_create(upperdir, dentry);
++      if (IS_ERR(newdentry))
++              goto out;
++
++      switch (stat->mode & S_IFMT) {
++      case S_IFREG:
++              err = vfs_create(dir, newdentry, stat->mode, NULL);
++              break;
++
++      case S_IFDIR:
++              err = vfs_mkdir(dir, newdentry, stat->mode);
++              break;
++
++      case S_IFCHR:
++      case S_IFBLK:
++      case S_IFIFO:
++      case S_IFSOCK:
++              err = vfs_mknod(dir, newdentry, stat->mode, stat->rdev);
++              break;
++
++      case S_IFLNK:
++              err = vfs_symlink(dir, newdentry, link);
++              break;
++
++      default:
++              err = -EPERM;
++      }
++      if (err) {
++              if (ovl_dentry_is_opaque(dentry))
++                      ovl_whiteout(upperdir, dentry);
++              dput(newdentry);
++              newdentry = ERR_PTR(err);
++      } else if (WARN_ON(!newdentry->d_inode)) {
++              /*
++               * Not quite sure if non-instantiated dentry is legal or not.
++               * VFS doesn't seem to care so check and warn here.
++               */
++              dput(newdentry);
++              newdentry = ERR_PTR(-ENOENT);
++      }
++
++out:
++      return newdentry;
++
++}
++
++static int ovl_set_opaque(struct dentry *upperdentry)
++{
++      int err;
++      const struct cred *old_cred;
++      struct cred *override_cred;
++
++      override_cred = prepare_creds();
++      if (!override_cred)
++              return -ENOMEM;
++
++      /* CAP_SYS_ADMIN for setxattr of "trusted" namespace */
++      cap_raise(override_cred->cap_effective, CAP_SYS_ADMIN);
++      old_cred = override_creds(override_cred);
++      err = vfs_setxattr(upperdentry, ovl_opaque_xattr, "y", 1, 0);
++      revert_creds(old_cred);
++      put_cred(override_cred);
++
++      return err;
++}
++
++static int ovl_remove_opaque(struct dentry *upperdentry)
++{
++      int err;
++      const struct cred *old_cred;
++      struct cred *override_cred;
++
++      override_cred = prepare_creds();
++      if (!override_cred)
++              return -ENOMEM;
++
++      /* CAP_SYS_ADMIN for removexattr of "trusted" namespace */
++      cap_raise(override_cred->cap_effective, CAP_SYS_ADMIN);
++      old_cred = override_creds(override_cred);
++      err = vfs_removexattr(upperdentry, ovl_opaque_xattr);
++      revert_creds(old_cred);
++      put_cred(override_cred);
++
++      return err;
++}
++
++static int ovl_dir_getattr(struct vfsmount *mnt, struct dentry *dentry,
++                       struct kstat *stat)
++{
++      int err;
++      enum ovl_path_type type;
++      struct path realpath;
++
++      type = ovl_path_real(dentry, &realpath);
++      err = vfs_getattr(realpath.mnt, realpath.dentry, stat);
++      if (err)
++              return err;
++
++      stat->dev = dentry->d_sb->s_dev;
++      stat->ino = dentry->d_inode->i_ino;
++
++      /*
++       * It's probably not worth it to count subdirs to get the
++       * correct link count.  nlink=1 seems to pacify 'find' and
++       * other utilities.
++       */
++      if (type == OVL_PATH_MERGE)
++              stat->nlink = 1;
++
++      return 0;
++}
++
++static int ovl_create_object(struct dentry *dentry, int mode, dev_t rdev,
++                           const char *link)
++{
++      int err;
++      struct dentry *newdentry;
++      struct dentry *upperdir;
++      struct inode *inode;
++      struct kstat stat = {
++              .mode = mode,
++              .rdev = rdev,
++      };
++
++      err = -ENOMEM;
++      inode = ovl_new_inode(dentry->d_sb, mode, dentry->d_fsdata);
++      if (!inode)
++              goto out;
++
++      err = ovl_copy_up(dentry->d_parent);
++      if (err)
++              goto out_iput;
++
++      upperdir = ovl_dentry_upper(dentry->d_parent);
++      mutex_lock_nested(&upperdir->d_inode->i_mutex, I_MUTEX_PARENT);
++
++      newdentry = ovl_upper_create(upperdir, dentry, &stat, link);
++      err = PTR_ERR(newdentry);
++      if (IS_ERR(newdentry))
++              goto out_unlock;
++
++      ovl_dentry_version_inc(dentry->d_parent);
++      if (ovl_dentry_is_opaque(dentry) && S_ISDIR(mode)) {
++              err = ovl_set_opaque(newdentry);
++              if (err) {
++                      vfs_rmdir(upperdir->d_inode, newdentry);
++                      ovl_whiteout(upperdir, dentry);
++                      goto out_dput;
++              }
++      }
++      ovl_dentry_update(dentry, newdentry);
++      d_instantiate(dentry, inode);
++      inode = NULL;
++      newdentry = NULL;
++      err = 0;
++
++out_dput:
++      dput(newdentry);
++out_unlock:
++      mutex_unlock(&upperdir->d_inode->i_mutex);
++out_iput:
++      iput(inode);
++out:
++      return err;
++}
++
++static int ovl_create(struct inode *dir, struct dentry *dentry, int mode,
++                      struct nameidata *nd)
++{
++      return ovl_create_object(dentry, (mode & 07777) | S_IFREG, 0, NULL);
++}
++
++static int ovl_mkdir(struct inode *dir, struct dentry *dentry, int mode)
++{
++      return ovl_create_object(dentry, (mode & 07777) | S_IFDIR, 0, NULL);
++}
++
++static int ovl_mknod(struct inode *dir, struct dentry *dentry, int mode,
++                     dev_t rdev)
++{
++      return ovl_create_object(dentry, mode, rdev, NULL);
++}
++
++static int ovl_symlink(struct inode *dir, struct dentry *dentry,
++                       const char *link)
++{
++      return ovl_create_object(dentry, S_IFLNK, 0, link);
++}
++
++static int ovl_do_remove(struct dentry *dentry, bool is_dir)
++{
++      int err;
++      enum ovl_path_type type;
++      struct path realpath;
++      struct dentry *upperdir;
++
++      err = ovl_copy_up(dentry->d_parent);
++      if (err)
++              return err;
++
++      upperdir = ovl_dentry_upper(dentry->d_parent);
++      mutex_lock_nested(&upperdir->d_inode->i_mutex, I_MUTEX_PARENT);
++      type = ovl_path_real(dentry, &realpath);
++      if (type != OVL_PATH_LOWER) {
++              err = -ESTALE;
++              if (realpath.dentry->d_parent != upperdir)
++                      goto out_d_drop;
++
++              /* FIXME: create whiteout up front and rename to target */
++
++              if (is_dir)
++                      err = vfs_rmdir(upperdir->d_inode, realpath.dentry);
++              else
++                      err = vfs_unlink(upperdir->d_inode, realpath.dentry);
++              if (err)
++                      goto out_d_drop;
++
++              ovl_dentry_version_inc(dentry->d_parent);
++      }
++
++      if (type != OVL_PATH_UPPER || ovl_dentry_is_opaque(dentry))
++              err = ovl_whiteout(upperdir, dentry);
++
++      /*
++       * Keeping this dentry hashed would mean having to release
++       * upperpath/lowerpath, which could only be done if we are the
++       * sole user of this dentry.  Too tricky...  Just unhash for
++       * now.
++       */
++out_d_drop:
++      d_drop(dentry);
++      mutex_unlock(&upperdir->d_inode->i_mutex);
++
++      return err;
++}
++
++static int ovl_unlink(struct inode *dir, struct dentry *dentry)
++{
++      return ovl_do_remove(dentry, false);
++}
++
++
++static int ovl_rmdir(struct inode *dir, struct dentry *dentry)
++{
++      int err;
++      enum ovl_path_type type;
++
++      type = ovl_path_type(dentry);
++      if (type != OVL_PATH_UPPER) {
++              err = ovl_check_empty_and_clear(dentry, type);
++              if (err)
++                      return err;
++      }
++
++      return ovl_do_remove(dentry, true);
++}
++
++static int ovl_link(struct dentry *old, struct inode *newdir,
++                  struct dentry *new)
++{
++      int err;
++      struct dentry *olddentry;
++      struct dentry *newdentry;
++      struct dentry *upperdir;
++
++      err = ovl_copy_up(old);
++      if (err)
++              goto out;
++
++      err = ovl_copy_up(new->d_parent);
++      if (err)
++              goto out;
++
++      upperdir = ovl_dentry_upper(new->d_parent);
++      mutex_lock_nested(&upperdir->d_inode->i_mutex, I_MUTEX_PARENT);
++      newdentry = ovl_lookup_create(upperdir, new);
++      err = PTR_ERR(newdentry);
++      if (IS_ERR(newdentry))
++              goto out_unlock;
++
++      olddentry = ovl_dentry_upper(old);
++      err = vfs_link(olddentry, upperdir->d_inode, newdentry);
++      if (!err) {
++              if (WARN_ON(!newdentry->d_inode)) {
++                      dput(newdentry);
++                      err = -ENOENT;
++                      goto out_unlock;
++              }
++
++              ovl_dentry_version_inc(new->d_parent);
++              ovl_dentry_update(new, newdentry);
++
++              ihold(old->d_inode);
++              d_instantiate(new, old->d_inode);
++      } else {
++              if (ovl_dentry_is_opaque(new))
++                      ovl_whiteout(upperdir, new);
++              dput(newdentry);
++      }
++out_unlock:
++      mutex_unlock(&upperdir->d_inode->i_mutex);
++out:
++      return err;
++
++}
++
++static int ovl_rename(struct inode *olddir, struct dentry *old,
++                      struct inode *newdir, struct dentry *new)
++{
++      int err;
++      enum ovl_path_type old_type;
++      enum ovl_path_type new_type;
++      struct dentry *old_upperdir;
++      struct dentry *new_upperdir;
++      struct dentry *olddentry;
++      struct dentry *newdentry;
++      struct dentry *trap;
++      bool old_opaque;
++      bool new_opaque;
++      bool new_create = false;
++      bool is_dir = S_ISDIR(old->d_inode->i_mode);
++
++      /* Don't copy up directory trees */
++      old_type = ovl_path_type(old);
++      if (old_type != OVL_PATH_UPPER && is_dir)
++              return -EXDEV;
++
++      if (new->d_inode) {
++              new_type = ovl_path_type(new);
++
++              if (new_type == OVL_PATH_LOWER && old_type == OVL_PATH_LOWER) {
++                      if (ovl_dentry_lower(old)->d_inode ==
++                          ovl_dentry_lower(new)->d_inode)
++                              return 0;
++              }
++              if (new_type != OVL_PATH_LOWER && old_type != OVL_PATH_LOWER) {
++                      if (ovl_dentry_upper(old)->d_inode ==
++                          ovl_dentry_upper(new)->d_inode)
++                              return 0;
++              }
++
++              if (new_type != OVL_PATH_UPPER &&
++                  S_ISDIR(new->d_inode->i_mode)) {
++                      err = ovl_check_empty_and_clear(new, new_type);
++                      if (err)
++                              return err;
++              }
++      } else {
++              new_type = OVL_PATH_UPPER;
++      }
++
++      err = ovl_copy_up(old);
++      if (err)
++              return err;
++
++      err = ovl_copy_up(new->d_parent);
++      if (err)
++              return err;
++
++      old_upperdir = ovl_dentry_upper(old->d_parent);
++      new_upperdir = ovl_dentry_upper(new->d_parent);
++
++      trap = lock_rename(new_upperdir, old_upperdir);
++
++      olddentry = ovl_dentry_upper(old);
++      newdentry = ovl_dentry_upper(new);
++      if (newdentry) {
++              dget(newdentry);
++      } else {
++              new_create = true;
++              newdentry = ovl_lookup_create(new_upperdir, new);
++              err = PTR_ERR(newdentry);
++              if (IS_ERR(newdentry))
++                      goto out_unlock;
++      }
++
++      err = -ESTALE;
++      if (olddentry->d_parent != old_upperdir)
++              goto out_dput;
++      if (newdentry->d_parent != new_upperdir)
++              goto out_dput;
++      if (olddentry == trap)
++              goto out_dput;
++      if (newdentry == trap)
++              goto out_dput;
++
++      old_opaque = ovl_dentry_is_opaque(old);
++      new_opaque = ovl_dentry_is_opaque(new) || new_type != OVL_PATH_UPPER;
++
++      if (is_dir && !old_opaque && new_opaque) {
++              err = ovl_set_opaque(olddentry);
++              if (err)
++                      goto out_dput;
++      }
++
++      err = vfs_rename(old_upperdir->d_inode, olddentry,
++                       new_upperdir->d_inode, newdentry);
++
++      if (err) {
++              if (new_create && ovl_dentry_is_opaque(new))
++                      ovl_whiteout(new_upperdir, new);
++              if (is_dir && !old_opaque && new_opaque)
++                      ovl_remove_opaque(olddentry);
++              goto out_dput;
++      }
++
++      if (old_type != OVL_PATH_UPPER || old_opaque)
++              err = ovl_whiteout(old_upperdir, old);
++      if (is_dir && old_opaque && !new_opaque)
++              ovl_remove_opaque(olddentry);
++
++      if (old_opaque != new_opaque)
++              ovl_dentry_set_opaque(old, new_opaque);
++
++      ovl_dentry_version_inc(old->d_parent);
++      ovl_dentry_version_inc(new->d_parent);
++
++out_dput:
++      dput(newdentry);
++out_unlock:
++      unlock_rename(new_upperdir, old_upperdir);
++      return err;
++}
++
++const struct inode_operations ovl_dir_inode_operations = {
++      .lookup         = ovl_lookup,
++      .mkdir          = ovl_mkdir,
++      .symlink        = ovl_symlink,
++      .unlink         = ovl_unlink,
++      .rmdir          = ovl_rmdir,
++      .rename         = ovl_rename,
++      .link           = ovl_link,
++      .setattr        = ovl_setattr,
++      .create         = ovl_create,
++      .mknod          = ovl_mknod,
++      .permission     = ovl_permission,
++      .getattr        = ovl_dir_getattr,
++      .setxattr       = ovl_setxattr,
++      .getxattr       = ovl_getxattr,
++      .listxattr      = ovl_listxattr,
++      .removexattr    = ovl_removexattr,
++};
+--- /dev/null
++++ b/fs/overlayfs/inode.c
+@@ -0,0 +1,375 @@
++/*
++ *
++ * Copyright (C) 2011 Novell Inc.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ */
++
++#include <linux/fs.h>
++#include <linux/slab.h>
++#include <linux/xattr.h>
++#include "overlayfs.h"
++
++int ovl_setattr(struct dentry *dentry, struct iattr *attr)
++{
++      struct dentry *upperdentry;
++      int err;
++
++      if ((attr->ia_valid & ATTR_SIZE) && !ovl_dentry_upper(dentry))
++              err = ovl_copy_up_truncate(dentry, attr->ia_size);
++      else
++              err = ovl_copy_up(dentry);
++      if (err)
++              return err;
++
++      upperdentry = ovl_dentry_upper(dentry);
++
++      if (attr->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
++              attr->ia_valid &= ~ATTR_MODE;
++
++      mutex_lock(&upperdentry->d_inode->i_mutex);
++      err = notify_change(upperdentry, attr);
++      mutex_unlock(&upperdentry->d_inode->i_mutex);
++
++      return err;
++}
++
++static int ovl_getattr(struct vfsmount *mnt, struct dentry *dentry,
++                       struct kstat *stat)
++{
++      struct path realpath;
++
++      ovl_path_real(dentry, &realpath);
++      return vfs_getattr(realpath.mnt, realpath.dentry, stat);
++}
++
++int ovl_permission(struct inode *inode, int mask, unsigned int flags)
++{
++      struct ovl_entry *oe;
++      struct dentry *alias = NULL;
++      struct inode *realinode;
++      struct dentry *realdentry;
++      bool is_upper;
++      int err;
++
++      if (S_ISDIR(inode->i_mode)) {
++              oe = inode->i_private;
++      } else if (flags & IPERM_FLAG_RCU) {
++              return -ECHILD;
++      } else {
++              /*
++               * For non-directories find an alias and get the info
++               * from there.
++               */
++              spin_lock(&inode->i_lock);
++              if (WARN_ON(list_empty(&inode->i_dentry))) {
++                      spin_unlock(&inode->i_lock);
++                      return -ENOENT;
++              }
++              alias = list_entry(inode->i_dentry.next, struct dentry, d_alias);
++              dget(alias);
++              spin_unlock(&inode->i_lock);
++              oe = alias->d_fsdata;
++      }
++
++      realdentry = ovl_entry_real(oe, &is_upper);
++
++      /* Careful in RCU walk mode */
++      realinode = ACCESS_ONCE(realdentry->d_inode);
++      if (!realinode) {
++              WARN_ON(!(flags & IPERM_FLAG_RCU));
++              err = -ENOENT;
++              goto out_dput;
++      }
++
++      if (mask & MAY_WRITE) {
++              umode_t mode = realinode->i_mode;
++
++              /*
++               * Writes will always be redirected to upper layer, so
++               * ignore lower layer being read-only.
++               */
++              err = -EROFS;
++              if (is_upper && IS_RDONLY(realinode) &&
++                  (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)))
++                      goto out_dput;
++
++              /*
++               * Nobody gets write access to an immutable file.
++               */
++              err = -EACCES;
++              if (IS_IMMUTABLE(realinode))
++                      goto out_dput;
++      }
++
++      if (realinode->i_op->permission)
++              err = realinode->i_op->permission(realinode, mask, flags);
++      else
++              err = generic_permission(realinode, mask, flags,
++                                       realinode->i_op->check_acl);
++out_dput:
++      dput(alias);
++      return err;
++}
++
++
++struct ovl_link_data {
++      struct dentry *realdentry;
++      void *cookie;
++};
++
++static void *ovl_follow_link(struct dentry *dentry, struct nameidata *nd)
++{
++      void *ret;
++      struct dentry *realdentry;
++      struct inode *realinode;
++
++      realdentry = ovl_dentry_real(dentry);
++      realinode = realdentry->d_inode;
++
++      if (WARN_ON(!realinode->i_op->follow_link))
++              return ERR_PTR(-EPERM);
++
++      ret = realinode->i_op->follow_link(realdentry, nd);
++      if (IS_ERR(ret))
++              return ret;
++
++      if (realinode->i_op->put_link) {
++              struct ovl_link_data *data;
++
++              data = kmalloc(sizeof(struct ovl_link_data), GFP_KERNEL);
++              if (!data) {
++                      realinode->i_op->put_link(realdentry, nd, ret);
++                      return ERR_PTR(-ENOMEM);
++              }
++              data->realdentry = realdentry;
++              data->cookie = ret;
++
++              return data;
++      } else {
++              return NULL;
++      }
++}
++
++static void ovl_put_link(struct dentry *dentry, struct nameidata *nd, void *c)
++{
++      struct inode *realinode;
++      struct ovl_link_data *data = c;
++
++      if (!data)
++              return;
++
++      realinode = data->realdentry->d_inode;
++      realinode->i_op->put_link(data->realdentry, nd, data->cookie);
++      kfree(data);
++}
++
++static int ovl_readlink(struct dentry *dentry, char __user *buf, int bufsiz)
++{
++      struct path realpath;
++      struct inode *realinode;
++
++      ovl_path_real(dentry, &realpath);
++      realinode = realpath.dentry->d_inode;
++
++      if (!realinode->i_op->readlink)
++              return -EINVAL;
++
++      touch_atime(realpath.mnt, realpath.dentry);
++
++      return realinode->i_op->readlink(realpath.dentry, buf, bufsiz);
++}
++
++
++static bool ovl_is_private_xattr(const char *name)
++{
++      return strncmp(name, "trusted.overlay.", 14) == 0;
++}
++
++int ovl_setxattr(struct dentry *dentry, const char *name,
++               const void *value, size_t size, int flags)
++{
++      int err;
++      struct dentry *upperdentry;
++
++      if (ovl_is_private_xattr(name))
++              return -EPERM;
++
++      err = ovl_copy_up(dentry);
++      if (err)
++              return err;
++
++      upperdentry = ovl_dentry_upper(dentry);
++      return  vfs_setxattr(upperdentry, name, value, size, flags);
++}
++
++ssize_t ovl_getxattr(struct dentry *dentry, const char *name,
++                   void *value, size_t size)
++{
++      if (ovl_path_type(dentry->d_parent) == OVL_PATH_MERGE &&
++          ovl_is_private_xattr(name))
++              return -ENODATA;
++
++      return vfs_getxattr(ovl_dentry_real(dentry), name, value, size);
++}
++
++ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size)
++{
++      ssize_t res;
++      int off;
++
++      res = vfs_listxattr(ovl_dentry_real(dentry), list, size);
++      if (res <= 0 || size == 0)
++              return res;
++
++      if (ovl_path_type(dentry->d_parent) != OVL_PATH_MERGE)
++              return res;
++
++      /* filter out private xattrs */
++      for (off = 0; off < res;) {
++              char *s = list + off;
++              size_t slen = strlen(s) + 1;
++
++              BUG_ON(off + slen > res);
++
++              if (ovl_is_private_xattr(s)) {
++                      res -= slen;
++                      memmove(s, s + slen, res - off);
++              } else {
++                      off += slen;
++              }
++      }
++
++      return res;
++}
++
++int ovl_removexattr(struct dentry *dentry, const char *name)
++{
++      int err;
++      struct path realpath;
++      enum ovl_path_type type;
++
++      if (ovl_path_type(dentry->d_parent) == OVL_PATH_MERGE &&
++          ovl_is_private_xattr(name))
++              return -ENODATA;
++
++      type = ovl_path_real(dentry, &realpath);
++      if (type == OVL_PATH_LOWER) {
++              err = vfs_getxattr(realpath.dentry, name, NULL, 0);
++              if (err < 0)
++                      return err;
++
++              err = ovl_copy_up(dentry);
++              if (err)
++                      return err;
++
++              ovl_path_upper(dentry, &realpath);
++      }
++
++      return vfs_removexattr(realpath.dentry, name);
++}
++
++static bool ovl_open_need_copy_up(int flags, enum ovl_path_type type,
++                                struct dentry *realdentry)
++{
++      if (type != OVL_PATH_LOWER)
++              return false;
++
++      if (special_file(realdentry->d_inode->i_mode))
++              return false;
++
++      if (!(OPEN_FMODE(flags) & FMODE_WRITE) && !(flags & O_TRUNC))
++              return false;
++
++      return true;
++}
++
++static struct file *ovl_open(struct dentry *dentry, int flags,
++                           const struct cred *cred)
++{
++      int err;
++      struct path realpath;
++      enum ovl_path_type type;
++
++      type = ovl_path_real(dentry, &realpath);
++      if (ovl_open_need_copy_up(flags, type, realpath.dentry)) {
++              if (flags & O_TRUNC)
++                      err = ovl_copy_up_truncate(dentry, 0);
++              else
++                      err = ovl_copy_up(dentry);
++              if (err)
++                      return ERR_PTR(err);
++
++              ovl_path_upper(dentry, &realpath);
++      }
++
++      return vfs_open(&realpath, flags, cred);
++}
++
++static const struct inode_operations ovl_file_inode_operations = {
++      .setattr        = ovl_setattr,
++      .permission     = ovl_permission,
++      .getattr        = ovl_getattr,
++      .setxattr       = ovl_setxattr,
++      .getxattr       = ovl_getxattr,
++      .listxattr      = ovl_listxattr,
++      .removexattr    = ovl_removexattr,
++      .open           = ovl_open,
++};
++
++static const struct inode_operations ovl_symlink_inode_operations = {
++      .setattr        = ovl_setattr,
++      .follow_link    = ovl_follow_link,
++      .put_link       = ovl_put_link,
++      .readlink       = ovl_readlink,
++      .getattr        = ovl_getattr,
++      .setxattr       = ovl_setxattr,
++      .getxattr       = ovl_getxattr,
++      .listxattr      = ovl_listxattr,
++      .removexattr    = ovl_removexattr,
++};
++
++struct inode *ovl_new_inode(struct super_block *sb, umode_t mode,
++                          struct ovl_entry *oe)
++{
++      struct inode *inode;
++
++      inode = new_inode(sb);
++      if (!inode)
++              return NULL;
++
++      mode &= S_IFMT;
++
++      inode->i_ino = get_next_ino();
++      inode->i_mode = mode;
++      inode->i_flags |= S_NOATIME | S_NOCMTIME;
++
++      switch (mode) {
++      case S_IFDIR:
++              inode->i_private = oe;
++              inode->i_op = &ovl_dir_inode_operations;
++              inode->i_fop = &ovl_dir_operations;
++              break;
++
++      case S_IFLNK:
++              inode->i_op = &ovl_symlink_inode_operations;
++              break;
++
++      case S_IFREG:
++      case S_IFSOCK:
++      case S_IFBLK:
++      case S_IFCHR:
++      case S_IFIFO:
++              inode->i_op = &ovl_file_inode_operations;
++              break;
++
++      default:
++              WARN(1, "illegal file type: %i\n", mode);
++              inode = NULL;
++      }
++
++      return inode;
++
++}
+--- /dev/null
++++ b/fs/overlayfs/overlayfs.h
+@@ -0,0 +1,62 @@
++/*
++ *
++ * Copyright (C) 2011 Novell Inc.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ */
++
++struct ovl_entry;
++
++enum ovl_path_type {
++      OVL_PATH_UPPER,
++      OVL_PATH_MERGE,
++      OVL_PATH_LOWER,
++};
++
++extern const char *ovl_opaque_xattr;
++extern const char *ovl_whiteout_xattr;
++extern const struct dentry_operations ovl_dentry_operations;
++
++enum ovl_path_type ovl_path_type(struct dentry *dentry);
++u64 ovl_dentry_version_get(struct dentry *dentry);
++void ovl_dentry_version_inc(struct dentry *dentry);
++void ovl_path_upper(struct dentry *dentry, struct path *path);
++void ovl_path_lower(struct dentry *dentry, struct path *path);
++enum ovl_path_type ovl_path_real(struct dentry *dentry, struct path *path);
++struct dentry *ovl_dentry_upper(struct dentry *dentry);
++struct dentry *ovl_dentry_lower(struct dentry *dentry);
++struct dentry *ovl_dentry_real(struct dentry *dentry);
++struct dentry *ovl_entry_real(struct ovl_entry *oe, bool *is_upper);
++bool ovl_dentry_is_opaque(struct dentry *dentry);
++void ovl_dentry_set_opaque(struct dentry *dentry, bool opaque);
++bool ovl_is_whiteout(struct dentry *dentry);
++void ovl_dentry_update(struct dentry *dentry, struct dentry *upperdentry);
++int ovl_do_lookup(struct dentry *dentry);
++
++struct dentry *ovl_upper_create(struct dentry *upperdir, struct dentry *dentry,
++                              struct kstat *stat, const char *link);
++
++/* readdir.c */
++extern const struct file_operations ovl_dir_operations;
++int ovl_check_empty_and_clear(struct dentry *dentry, enum ovl_path_type type);
++
++/* inode.c */
++int ovl_setattr(struct dentry *dentry, struct iattr *attr);
++int ovl_permission(struct inode *inode, int mask, unsigned int flags);
++int ovl_setxattr(struct dentry *dentry, const char *name,
++               const void *value, size_t size, int flags);
++ssize_t ovl_getxattr(struct dentry *dentry, const char *name,
++                   void *value, size_t size);
++ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size);
++int ovl_removexattr(struct dentry *dentry, const char *name);
++
++struct inode *ovl_new_inode(struct super_block *sb, umode_t mode,
++                          struct ovl_entry *oe);
++/* dir.c */
++extern const struct inode_operations ovl_dir_inode_operations;
++
++/* copy_up.c */
++int ovl_copy_up(struct dentry *dentry);
++int ovl_copy_up_truncate(struct dentry *dentry, loff_t size);
+--- /dev/null
++++ b/fs/overlayfs/readdir.c
+@@ -0,0 +1,558 @@
++/*
++ *
++ * Copyright (C) 2011 Novell Inc.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ */
++
++#include <linux/fs.h>
++#include <linux/slab.h>
++#include <linux/namei.h>
++#include <linux/file.h>
++#include <linux/xattr.h>
++#include <linux/rbtree.h>
++#include <linux/security.h>
++#include "overlayfs.h"
++
++struct ovl_cache_entry {
++      const char *name;
++      unsigned int len;
++      unsigned int type;
++      u64 ino;
++      bool is_whiteout;
++      struct list_head l_node;
++      struct rb_node node;
++};
++
++struct ovl_readdir_data {
++      struct rb_root *root;
++      struct list_head *list;
++      struct list_head *middle;
++      struct dentry *dir;
++      int count;
++      int err;
++};
++
++struct ovl_dir_file {
++      bool is_real;
++      bool is_cached;
++      struct list_head cursor;
++      u64 cache_version;
++      struct list_head cache;
++      struct file *realfile;
++};
++
++static struct ovl_cache_entry *ovl_cache_entry_from_node(struct rb_node *n)
++{
++      return container_of(n, struct ovl_cache_entry, node);
++}
++
++static struct ovl_cache_entry *ovl_cache_entry_find(struct rb_root *root,
++                                                  const char *name, int len)
++{
++      struct rb_node *node = root->rb_node;
++      int cmp;
++
++      while (node) {
++              struct ovl_cache_entry *p = ovl_cache_entry_from_node(node);
++
++              cmp = strncmp(name, p->name, len);
++              if (cmp > 0)
++                      node = p->node.rb_right;
++              else if (cmp < 0 || len < p->len)
++                      node = p->node.rb_left;
++              else
++                      return p;
++      }
++
++      return NULL;
++}
++
++static struct ovl_cache_entry *ovl_cache_entry_new(const char *name, int len,
++                                                 u64 ino, unsigned int d_type)
++{
++      struct ovl_cache_entry *p;
++
++      p = kmalloc(sizeof(*p) + len + 1, GFP_KERNEL);
++      if (p) {
++              char *name_copy = (char *) (p + 1);
++              memcpy(name_copy, name, len);
++              name_copy[len] = '\0';
++              p->name = name_copy;
++              p->len = len;
++              p->type = d_type;
++              p->ino = ino;
++              p->is_whiteout = false;
++      }
++
++      return p;
++}
++
++static int ovl_cache_entry_add_rb(struct ovl_readdir_data *rdd,
++                                const char *name, int len, u64 ino,
++                                unsigned int d_type)
++{
++      struct rb_node **newp = &rdd->root->rb_node;
++      struct rb_node *parent = NULL;
++      struct ovl_cache_entry *p;
++
++      while (*newp) {
++              int cmp;
++              struct ovl_cache_entry *tmp;
++
++              parent = *newp;
++              tmp = ovl_cache_entry_from_node(*newp);
++              cmp = strncmp(name, tmp->name, len);
++              if (cmp > 0)
++                      newp = &tmp->node.rb_right;
++              else if (cmp < 0 || len < tmp->len)
++                      newp = &tmp->node.rb_left;
++              else
++                      return 0;
++      }
++
++      p = ovl_cache_entry_new(name, len, ino, d_type);
++      if (p == NULL)
++              return -ENOMEM;
++
++      list_add_tail(&p->l_node, rdd->list);
++      rb_link_node(&p->node, parent, newp);
++      rb_insert_color(&p->node, rdd->root);
++
++      return 0;
++}
++
++static int ovl_fill_lower(void *buf, const char *name, int namelen,
++                          loff_t offset, u64 ino, unsigned int d_type)
++{
++      struct ovl_readdir_data *rdd = buf;
++      struct ovl_cache_entry *p;
++
++      rdd->count++;
++      p = ovl_cache_entry_find(rdd->root, name, namelen);
++      if (p) {
++              list_move_tail(&p->l_node, rdd->middle);
++      } else {
++              p = ovl_cache_entry_new(name, namelen, ino, d_type);
++              if (p == NULL)
++                      rdd->err = -ENOMEM;
++              else
++                      list_add_tail(&p->l_node, rdd->middle);
++      }
++
++      return rdd->err;
++}
++
++static void ovl_cache_free(struct list_head *list)
++{
++      struct ovl_cache_entry *p;
++      struct ovl_cache_entry *n;
++
++      list_for_each_entry_safe(p, n, list, l_node)
++              kfree(p);
++
++      INIT_LIST_HEAD(list);
++}
++
++static int ovl_fill_upper(void *buf, const char *name, int namelen,
++                        loff_t offset, u64 ino, unsigned int d_type)
++{
++      struct ovl_readdir_data *rdd = buf;
++
++      rdd->count++;
++      return ovl_cache_entry_add_rb(rdd, name, namelen, ino, d_type);
++}
++
++static int ovl_dir_read(struct path *realpath, struct ovl_readdir_data *rdd,
++                        filldir_t filler)
++{
++      struct file *realfile;
++      int err;
++
++      realfile = vfs_open(realpath, O_RDONLY | O_DIRECTORY, current_cred());
++      if (IS_ERR(realfile))
++              return PTR_ERR(realfile);
++
++      do {
++              rdd->count = 0;
++              rdd->err = 0;
++              err = vfs_readdir(realfile, filler, rdd);
++              if (err >= 0)
++                      err = rdd->err;
++      } while (!err && rdd->count);
++      fput(realfile);
++
++      return 0;
++}
++
++static void ovl_dir_reset(struct file *file)
++{
++      struct ovl_dir_file *od = file->private_data;
++      enum ovl_path_type type = ovl_path_type(file->f_path.dentry);
++
++      if (ovl_dentry_version_get(file->f_path.dentry) != od->cache_version) {
++              list_del_init(&od->cursor);
++              ovl_cache_free(&od->cache);
++              od->is_cached = false;
++      }
++      WARN_ON(!od->is_real && type != OVL_PATH_MERGE);
++      if (od->is_real && type == OVL_PATH_MERGE) {
++              fput(od->realfile);
++              od->realfile = NULL;
++              od->is_real = false;
++      }
++}
++
++static int ovl_dir_mark_whiteouts(struct ovl_readdir_data *rdd)
++{
++      struct ovl_cache_entry *p;
++      struct dentry *dentry;
++      const struct cred *old_cred;
++      struct cred *override_cred;
++
++      override_cred = prepare_creds();
++      if (!override_cred) {
++              ovl_cache_free(rdd->list);
++              return -ENOMEM;
++      }
++
++      /*
++       * CAP_SYS_ADMIN for getxattr
++       * CAP_DAC_OVERRIDE for lookup
++       */
++      cap_raise(override_cred->cap_effective, CAP_SYS_ADMIN);
++      cap_raise(override_cred->cap_effective, CAP_DAC_OVERRIDE);
++      old_cred = override_creds(override_cred);
++
++      mutex_lock(&rdd->dir->d_inode->i_mutex);
++      list_for_each_entry(p, rdd->list, l_node) {
++              if (p->type != DT_LNK)
++                      continue;
++
++              dentry = lookup_one_len(p->name, rdd->dir, p->len);
++              if (IS_ERR(dentry))
++                      continue;
++
++              p->is_whiteout = ovl_is_whiteout(dentry);
++              dput(dentry);
++      }
++      mutex_unlock(&rdd->dir->d_inode->i_mutex);
++
++      revert_creds(old_cred);
++      put_cred(override_cred);
++
++      return 0;
++}
++
++static int ovl_dir_read_merged(struct path *upperpath, struct path *lowerpath,
++                             struct ovl_readdir_data *rdd)
++{
++      int err;
++      struct rb_root root = RB_ROOT;
++      struct list_head middle;
++
++      rdd->root = &root;
++      if (upperpath->dentry) {
++              rdd->dir = upperpath->dentry;
++              err = ovl_dir_read(upperpath, rdd, ovl_fill_upper);
++              if (err)
++                      goto out;
++
++              err = ovl_dir_mark_whiteouts(rdd);
++              if (err)
++                      goto out;
++      }
++      /*
++       * Insert lowerpath entries before upperpath ones, this allows
++       * offsets to be reasonably constant
++       */
++      list_add(&middle, rdd->list);
++      rdd->middle = &middle;
++      err = ovl_dir_read(lowerpath, rdd, ovl_fill_lower);
++      list_del(&middle);
++out:
++      rdd->root = NULL;
++
++      return err;
++}
++
++static void ovl_seek_cursor(struct ovl_dir_file *od, loff_t pos)
++{
++      struct list_head *l;
++      loff_t off;
++
++      l = od->cache.next;
++      for (off = 0; off < pos; off++) {
++              if (l == &od->cache)
++                      break;
++              l = l->next;
++      }
++      list_move_tail(&od->cursor, l);
++}
++
++static int ovl_readdir(struct file *file, void *buf, filldir_t filler)
++{
++      struct ovl_dir_file *od = file->private_data;
++      int res;
++
++      if (!file->f_pos)
++              ovl_dir_reset(file);
++
++      if (od->is_real) {
++              res = vfs_readdir(od->realfile, filler, buf);
++              file->f_pos = od->realfile->f_pos;
++
++              return res;
++      }
++
++      if (!od->is_cached) {
++              struct path lowerpath;
++              struct path upperpath;
++              struct ovl_readdir_data rdd = { .list = &od->cache };
++
++              ovl_path_lower(file->f_path.dentry, &lowerpath);
++              ovl_path_upper(file->f_path.dentry, &upperpath);
++
++              res = ovl_dir_read_merged(&upperpath, &lowerpath, &rdd);
++              if (res) {
++                      ovl_cache_free(rdd.list);
++                      return res;
++              }
++
++              od->cache_version = ovl_dentry_version_get(file->f_path.dentry);
++              od->is_cached = true;
++
++              ovl_seek_cursor(od, file->f_pos);
++      }
++
++      while (od->cursor.next != &od->cache) {
++              int over;
++              loff_t off;
++              struct ovl_cache_entry *p;
++
++              p = list_entry(od->cursor.next, struct ovl_cache_entry, l_node);
++              off = file->f_pos;
++              if (!p->is_whiteout) {
++                      over = filler(buf, p->name, p->len, off, p->ino, p->type);
++                      if (over)
++                              break;
++              }
++              file->f_pos++;
++              list_move(&od->cursor, &p->l_node);
++      }
++
++      return 0;
++}
++
++static loff_t ovl_dir_llseek(struct file *file, loff_t offset, int origin)
++{
++      loff_t res;
++      struct ovl_dir_file *od = file->private_data;
++
++      mutex_lock(&file->f_dentry->d_inode->i_mutex);
++      if (!file->f_pos)
++              ovl_dir_reset(file);
++
++      if (od->is_real) {
++              res = vfs_llseek(od->realfile, offset, origin);
++              file->f_pos = od->realfile->f_pos;
++      } else {
++              res = -EINVAL;
++
++              switch (origin) {
++              case SEEK_CUR:
++                      offset += file->f_pos;
++                      break;
++              case SEEK_SET:
++                      break;
++              default:
++                      goto out_unlock;
++              }
++              if (offset < 0)
++                      goto out_unlock;
++
++              if (offset != file->f_pos) {
++                      file->f_pos = offset;
++                      if (od->is_cached)
++                              ovl_seek_cursor(od, offset);
++              }
++              res = offset;
++      }
++out_unlock:
++      mutex_unlock(&file->f_dentry->d_inode->i_mutex);
++
++      return res;
++}
++
++static int ovl_dir_fsync(struct file *file, int datasync)
++{
++      struct ovl_dir_file *od = file->private_data;
++
++      /* May need to reopen directory if it got copied up */
++      if (!od->realfile) {
++              struct path upperpath;
++
++              ovl_path_upper(file->f_path.dentry, &upperpath);
++              od->realfile = vfs_open(&upperpath, O_RDONLY, current_cred());
++              if (IS_ERR(od->realfile))
++                      return PTR_ERR(od->realfile);
++      }
++
++      return vfs_fsync(od->realfile, datasync);
++}
++
++static int ovl_dir_release(struct inode *inode, struct file *file)
++{
++      struct ovl_dir_file *od = file->private_data;
++
++      list_del(&od->cursor);
++      ovl_cache_free(&od->cache);
++      if (od->realfile)
++              fput(od->realfile);
++      kfree(od);
++
++      return 0;
++}
++
++static int ovl_dir_open(struct inode *inode, struct file *file)
++{
++      struct path realpath;
++      struct file *realfile;
++      struct ovl_dir_file *od;
++      enum ovl_path_type type;
++
++      od = kzalloc(sizeof(struct ovl_dir_file), GFP_KERNEL);
++      if (!od)
++              return -ENOMEM;
++
++      type = ovl_path_real(file->f_path.dentry, &realpath);
++      realfile = vfs_open(&realpath, file->f_flags, current_cred());
++      if (IS_ERR(realfile)) {
++              kfree(od);
++              return PTR_ERR(realfile);
++      }
++      INIT_LIST_HEAD(&od->cache);
++      INIT_LIST_HEAD(&od->cursor);
++      od->is_cached = false;
++      od->realfile = realfile;
++      od->is_real = (type != OVL_PATH_MERGE);
++      file->private_data = od;
++
++      return 0;
++}
++
++const struct file_operations ovl_dir_operations = {
++      .read           = generic_read_dir,
++      .open           = ovl_dir_open,
++      .readdir        = ovl_readdir,
++      .llseek         = ovl_dir_llseek,
++      .fsync          = ovl_dir_fsync,
++      .release        = ovl_dir_release,
++};
++
++static int ovl_check_empty_dir(struct dentry *dentry, struct list_head *list)
++{
++      int err;
++      struct path lowerpath;
++      struct path upperpath;
++      struct ovl_cache_entry *p;
++      struct ovl_readdir_data rdd = { .list = list };
++
++      ovl_path_upper(dentry, &upperpath);
++      ovl_path_lower(dentry, &lowerpath);
++
++      err = ovl_dir_read_merged(&upperpath, &lowerpath, &rdd);
++      if (err)
++              return err;
++
++      err = 0;
++
++      list_for_each_entry(p, list, l_node) {
++              if (p->is_whiteout)
++                      continue;
++
++              if (p->name[0] == '.') {
++                      if (p->len == 1)
++                              continue;
++                      if (p->len == 2 && p->name[1] == '.')
++                              continue;
++              }
++              err = -ENOTEMPTY;
++              break;
++      }
++
++      return err;
++}
++
++static int ovl_remove_whiteouts(struct dentry *dir, struct list_head *list)
++{
++      struct path upperpath;
++      struct dentry *upperdir;
++      struct ovl_cache_entry *p;
++      const struct cred *old_cred;
++      struct cred *override_cred;
++      int err;
++
++      ovl_path_upper(dir, &upperpath);
++      upperdir = upperpath.dentry;
++
++      override_cred = prepare_creds();
++      if (!override_cred)
++              return -ENOMEM;
++
++      /*
++       * CAP_DAC_OVERRIDE for lookup and unlink
++       * CAP_SYS_ADMIN for setxattr of "trusted" namespace
++       * CAP_FOWNER for unlink in sticky directory
++       */
++      cap_raise(override_cred->cap_effective, CAP_DAC_OVERRIDE);
++      cap_raise(override_cred->cap_effective, CAP_SYS_ADMIN);
++      cap_raise(override_cred->cap_effective, CAP_FOWNER);
++      old_cred = override_creds(override_cred);
++
++      err = vfs_setxattr(upperdir, ovl_opaque_xattr, "y", 1, 0);
++      if (err)
++              goto out_revert_creds;
++
++      mutex_lock_nested(&upperdir->d_inode->i_mutex, I_MUTEX_PARENT);
++      list_for_each_entry(p, list, l_node) {
++              struct dentry *dentry;
++              int ret;
++
++              if (!p->is_whiteout)
++                      continue;
++
++              dentry = lookup_one_len(p->name, upperdir, p->len);
++              if (IS_ERR(dentry)) {
++                      printk(KERN_WARNING "overlayfs: failed to lookup whiteout %.*s: %li\n", p->len, p->name, PTR_ERR(dentry));
++                      continue;
++              }
++              ret = vfs_unlink(upperdir->d_inode, dentry);
++              dput(dentry);
++              if (ret)
++                      printk(KERN_WARNING "overlayfs: failed to unlink whiteout %.*s: %i\n", p->len, p->name, ret);
++      }
++      mutex_unlock(&upperdir->d_inode->i_mutex);
++
++out_revert_creds:
++      revert_creds(old_cred);
++      put_cred(override_cred);
++
++      return err;
++}
++
++int ovl_check_empty_and_clear(struct dentry *dentry, enum ovl_path_type type)
++{
++      int err;
++      LIST_HEAD(list);
++
++      err = ovl_check_empty_dir(dentry, &list);
++      if (!err && type == OVL_PATH_MERGE)
++              err = ovl_remove_whiteouts(dentry, &list);
++
++      ovl_cache_free(&list);
++
++      return err;
++}
+--- /dev/null
++++ b/fs/overlayfs/super.c
+@@ -0,0 +1,625 @@
++/*
++ *
++ * Copyright (C) 2011 Novell Inc.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ */
++
++#include <linux/fs.h>
++#include <linux/namei.h>
++#include <linux/xattr.h>
++#include <linux/security.h>
++#include <linux/mount.h>
++#include <linux/slab.h>
++#include <linux/parser.h>
++#include <linux/module.h>
++#include <linux/seq_file.h>
++#include "overlayfs.h"
++
++MODULE_AUTHOR("Miklos Szeredi <miklos@szeredi.hu>");
++MODULE_DESCRIPTION("Overlay filesystem");
++MODULE_LICENSE("GPL");
++
++struct ovl_config {
++      char *lowerdir;
++      char *upperdir;
++};
++
++/* private information held for overlayfs's superblock */
++struct ovl_fs {
++      struct vfsmount *upper_mnt;
++      struct vfsmount *lower_mnt;
++      /* pathnames of lower and upper dirs, for show_options */
++      struct ovl_config config;
++};
++
++/* private information held for every overlayfs dentry */
++struct ovl_entry {
++      /*
++       * Keep "double reference" on upper dentries, so that
++       * d_delete() doesn't think it's OK to reset d_inode to NULL.
++       */
++      struct dentry *__upperdentry;
++      struct dentry *lowerdentry;
++      union {
++              struct {
++                      u64 version;
++                      bool opaque;
++              };
++              struct rcu_head rcu;
++      };
++};
++
++const char *ovl_whiteout_xattr = "trusted.overlay.whiteout";
++const char *ovl_opaque_xattr = "trusted.overlay.opaque";
++
++
++enum ovl_path_type ovl_path_type(struct dentry *dentry)
++{
++      struct ovl_entry *oe = dentry->d_fsdata;
++
++      if (oe->__upperdentry) {
++              if (oe->lowerdentry && S_ISDIR(dentry->d_inode->i_mode))
++                      return OVL_PATH_MERGE;
++              else
++                      return OVL_PATH_UPPER;
++      } else {
++              return OVL_PATH_LOWER;
++      }
++}
++
++static struct dentry *ovl_upperdentry_dereference(struct ovl_entry *oe)
++{
++      struct dentry *upperdentry = ACCESS_ONCE(oe->__upperdentry);
++      smp_read_barrier_depends();
++      return upperdentry;
++}
++
++void ovl_path_upper(struct dentry *dentry, struct path *path)
++{
++      struct ovl_fs *ofs = dentry->d_sb->s_fs_info;
++      struct ovl_entry *oe = dentry->d_fsdata;
++
++      path->mnt = ofs->upper_mnt;
++      path->dentry = ovl_upperdentry_dereference(oe);
++}
++
++void ovl_path_lower(struct dentry *dentry, struct path *path)
++{
++      struct ovl_fs *ofs = dentry->d_sb->s_fs_info;
++      struct ovl_entry *oe = dentry->d_fsdata;
++
++      path->mnt = ofs->lower_mnt;
++      path->dentry = oe->lowerdentry;
++}
++
++enum ovl_path_type ovl_path_real(struct dentry *dentry, struct path *path)
++{
++
++      enum ovl_path_type type = ovl_path_type(dentry);
++
++      if (type == OVL_PATH_LOWER)
++              ovl_path_lower(dentry, path);
++      else
++              ovl_path_upper(dentry, path);
++
++      return type;
++}
++
++struct dentry *ovl_dentry_upper(struct dentry *dentry)
++{
++      struct ovl_entry *oe = dentry->d_fsdata;
++
++      return ovl_upperdentry_dereference(oe);
++}
++
++struct dentry *ovl_dentry_lower(struct dentry *dentry)
++{
++      struct ovl_entry *oe = dentry->d_fsdata;
++
++      return oe->lowerdentry;
++}
++
++struct dentry *ovl_dentry_real(struct dentry *dentry)
++{
++      struct ovl_entry *oe = dentry->d_fsdata;
++      struct dentry *realdentry;
++
++      realdentry = ovl_upperdentry_dereference(oe);
++      if (!realdentry)
++              realdentry = oe->lowerdentry;
++
++      return realdentry;
++}
++
++struct dentry *ovl_entry_real(struct ovl_entry *oe, bool *is_upper)
++{
++      struct dentry *realdentry;
++
++      realdentry = ovl_upperdentry_dereference(oe);
++      if (realdentry) {
++              *is_upper = true;
++      } else {
++              realdentry = oe->lowerdentry;
++              *is_upper = false;
++      }
++      return realdentry;
++}
++
++bool ovl_dentry_is_opaque(struct dentry *dentry)
++{
++      struct ovl_entry *oe = dentry->d_fsdata;
++      return oe->opaque;
++}
++
++void ovl_dentry_set_opaque(struct dentry *dentry, bool opaque)
++{
++      struct ovl_entry *oe = dentry->d_fsdata;
++      oe->opaque = opaque;
++}
++
++void ovl_dentry_update(struct dentry *dentry, struct dentry *upperdentry)
++{
++      struct ovl_entry *oe = dentry->d_fsdata;
++
++      WARN_ON(!mutex_is_locked(&upperdentry->d_parent->d_inode->i_mutex));
++      WARN_ON(oe->__upperdentry);
++      BUG_ON(!upperdentry->d_inode);
++      smp_wmb();
++      oe->__upperdentry = dget(upperdentry);
++}
++
++void ovl_dentry_version_inc(struct dentry *dentry)
++{
++      struct ovl_entry *oe = dentry->d_fsdata;
++
++      WARN_ON(!mutex_is_locked(&dentry->d_inode->i_mutex));
++      oe->version++;
++}
++
++u64 ovl_dentry_version_get(struct dentry *dentry)
++{
++      struct ovl_entry *oe = dentry->d_fsdata;
++
++      WARN_ON(!mutex_is_locked(&dentry->d_inode->i_mutex));
++      return oe->version;
++}
++
++bool ovl_is_whiteout(struct dentry *dentry)
++{
++      int res;
++      char val;
++
++      if (!dentry)
++              return false;
++      if (!dentry->d_inode)
++              return false;
++      if (!S_ISLNK(dentry->d_inode->i_mode))
++              return false;
++
++      res = vfs_getxattr(dentry, ovl_whiteout_xattr, &val, 1);
++      if (res == 1 && val == 'y')
++              return true;
++
++      return false;
++}
++
++static bool ovl_is_opaquedir(struct dentry *dentry)
++{
++      int res;
++      char val;
++
++      if (!S_ISDIR(dentry->d_inode->i_mode))
++              return false;
++
++      res = vfs_getxattr(dentry, ovl_opaque_xattr, &val, 1);
++      if (res == 1 && val == 'y')
++              return true;
++
++      return false;
++}
++
++static void ovl_entry_free(struct rcu_head *head)
++{
++      struct ovl_entry *oe = container_of(head, struct ovl_entry, rcu);
++      kfree(oe);
++}
++
++static void ovl_dentry_release(struct dentry *dentry)
++{
++      struct ovl_entry *oe = dentry->d_fsdata;
++
++      if (oe) {
++              dput(oe->__upperdentry);
++              dput(oe->__upperdentry);
++              dput(oe->lowerdentry);
++              call_rcu(&oe->rcu, ovl_entry_free);
++      }
++}
++
++const struct dentry_operations ovl_dentry_operations = {
++      .d_release = ovl_dentry_release,
++};
++
++static struct ovl_entry *ovl_alloc_entry(void)
++{
++      return kzalloc(sizeof(struct ovl_entry), GFP_KERNEL);
++}
++
++static struct dentry *ovl_lookup_real(struct dentry *dir, struct qstr *name)
++{
++      struct dentry *dentry;
++
++      mutex_lock(&dir->d_inode->i_mutex);
++      dentry = lookup_one_len(name->name, dir, name->len);
++      mutex_unlock(&dir->d_inode->i_mutex);
++
++      if (IS_ERR(dentry)) {
++              if (PTR_ERR(dentry) == -ENOENT)
++                      dentry = NULL;
++      } else if (!dentry->d_inode) {
++              dput(dentry);
++              dentry = NULL;
++      }
++      return dentry;
++}
++
++int ovl_do_lookup(struct dentry *dentry)
++{
++      struct ovl_entry *oe;
++      struct dentry *upperdir;
++      struct dentry *lowerdir;
++      struct dentry *upperdentry = NULL;
++      struct dentry *lowerdentry = NULL;
++      struct inode *inode = NULL;
++      int err;
++
++      err = -ENOMEM;
++      oe = ovl_alloc_entry();
++      if (!oe)
++              goto out;
++
++      upperdir = ovl_dentry_upper(dentry->d_parent);
++      lowerdir = ovl_dentry_lower(dentry->d_parent);
++
++      if (upperdir) {
++              upperdentry = ovl_lookup_real(upperdir, &dentry->d_name);
++              err = PTR_ERR(upperdentry);
++              if (IS_ERR(upperdentry))
++                      goto out_put_dir;
++
++              if (lowerdir && upperdentry &&
++                  (S_ISLNK(upperdentry->d_inode->i_mode) ||
++                   S_ISDIR(upperdentry->d_inode->i_mode))) {
++                      const struct cred *old_cred;
++                      struct cred *override_cred;
++
++                      err = -ENOMEM;
++                      override_cred = prepare_creds();
++                      if (!override_cred)
++                              goto out_dput_upper;
++
++                      /* CAP_SYS_ADMIN needed for getxattr */
++                      cap_raise(override_cred->cap_effective, CAP_SYS_ADMIN);
++                      old_cred = override_creds(override_cred);
++
++                      if (ovl_is_opaquedir(upperdentry)) {
++                              oe->opaque = true;
++                      } else if (ovl_is_whiteout(upperdentry)) {
++                              dput(upperdentry);
++                              upperdentry = NULL;
++                              oe->opaque = true;
++                      }
++                      revert_creds(old_cred);
++                      put_cred(override_cred);
++              }
++      }
++      if (lowerdir && !oe->opaque) {
++              lowerdentry = ovl_lookup_real(lowerdir, &dentry->d_name);
++              err = PTR_ERR(lowerdentry);
++              if (IS_ERR(lowerdentry))
++                      goto out_dput_upper;
++      }
++
++      if (lowerdentry && upperdentry &&
++          (!S_ISDIR(upperdentry->d_inode->i_mode) ||
++           !S_ISDIR(lowerdentry->d_inode->i_mode))) {
++              dput(lowerdentry);
++              lowerdentry = NULL;
++              oe->opaque = true;
++      }
++
++      if (lowerdentry || upperdentry) {
++              struct dentry *realdentry;
++
++              realdentry = upperdentry ? upperdentry : lowerdentry;
++              err = -ENOMEM;
++              inode = ovl_new_inode(dentry->d_sb, realdentry->d_inode->i_mode, oe);
++              if (!inode)
++                      goto out_dput;
++      }
++
++      if (upperdentry)
++              oe->__upperdentry = dget(upperdentry);
++
++      if (lowerdentry)
++              oe->lowerdentry = lowerdentry;
++
++      dentry->d_fsdata = oe;
++      dentry->d_op = &ovl_dentry_operations;
++      d_add(dentry, inode);
++
++      return 0;
++
++out_dput:
++      dput(lowerdentry);
++out_dput_upper:
++      dput(upperdentry);
++out_put_dir:
++      kfree(oe);
++out:
++      return err;
++}
++
++static void ovl_put_super(struct super_block *sb)
++{
++      struct ovl_fs *ufs = sb->s_fs_info;
++
++      if (!(sb->s_flags & MS_RDONLY))
++              mnt_drop_write(ufs->upper_mnt);
++
++      mntput(ufs->upper_mnt);
++      mntput(ufs->lower_mnt);
++
++      kfree(ufs->config.lowerdir);
++      kfree(ufs->config.upperdir);
++      kfree(ufs);
++}
++
++static int ovl_remount_fs(struct super_block *sb, int *flagsp, char *data)
++{
++      int flags = *flagsp;
++      struct ovl_fs *ufs = sb->s_fs_info;
++
++      /* When remounting rw or ro, we need to adjust the write access to the
++       * upper fs.
++       */
++      if (((flags ^ sb->s_flags) & MS_RDONLY) == 0)
++              /* No change to readonly status */
++              return 0;
++
++      if (flags & MS_RDONLY) {
++              mnt_drop_write(ufs->upper_mnt);
++              return 0;
++      } else
++              return mnt_want_write(ufs->upper_mnt);
++}
++
++/**
++ * ovl_statfs
++ * @sb: The overlayfs super block
++ * @buf: The struct kstatfs to fill in with stats
++ *
++ * Get the filesystem statistics.  As writes always target the upper layer
++ * filesystem pass the statfs to the same filesystem.
++ */
++static int ovl_statfs(struct dentry *dentry, struct kstatfs *buf)
++{
++      struct dentry *root_dentry = dentry->d_sb->s_root;
++      struct path path;
++      ovl_path_upper(root_dentry, &path);
++
++      if (!path.dentry->d_sb->s_op->statfs)
++              return -ENOSYS;
++      return path.dentry->d_sb->s_op->statfs(path.dentry, buf);
++}
++
++/**
++ * ovl_show_options
++ *
++ * Prints the mount options for a given superblock.
++ * Returns zero; does not fail.
++ */
++static int ovl_show_options(struct seq_file *m, struct vfsmount *mnt)
++{
++      struct super_block *sb = mnt->mnt_sb;
++      struct ovl_fs *ufs = sb->s_fs_info;
++
++      seq_printf(m, ",lowerdir=%s", ufs->config.lowerdir);
++      seq_printf(m, ",upperdir=%s", ufs->config.upperdir);
++      return 0;
++}
++
++static const struct super_operations ovl_super_operations = {
++      .put_super      = ovl_put_super,
++      .remount_fs     = ovl_remount_fs,
++      .statfs         = ovl_statfs,
++      .show_options   = ovl_show_options,
++};
++
++enum {
++      Opt_lowerdir,
++      Opt_upperdir,
++      Opt_err,
++};
++
++static const match_table_t ovl_tokens = {
++      {Opt_lowerdir,                  "lowerdir=%s"},
++      {Opt_upperdir,                  "upperdir=%s"},
++      {Opt_err,                       NULL}
++};
++
++static int ovl_parse_opt(char *opt, struct ovl_config *config)
++{
++      char *p;
++
++      config->upperdir = NULL;
++      config->lowerdir = NULL;
++
++      while ((p = strsep(&opt, ",")) != NULL) {
++              int token;
++              substring_t args[MAX_OPT_ARGS];
++
++              if (!*p)
++                      continue;
++
++              token = match_token(p, ovl_tokens, args);
++              switch (token) {
++              case Opt_upperdir:
++                      kfree(config->upperdir);
++                      config->upperdir = match_strdup(&args[0]);
++                      if (!config->upperdir)
++                              return -ENOMEM;
++                      break;
++
++              case Opt_lowerdir:
++                      kfree(config->lowerdir);
++                      config->lowerdir = match_strdup(&args[0]);
++                      if (!config->lowerdir)
++                              return -ENOMEM;
++                      break;
++
++              default:
++                      return -EINVAL;
++              }
++      }
++      return 0;
++}
++
++static int ovl_fill_super(struct super_block *sb, void *data, int silent)
++{
++      struct path lowerpath;
++      struct path upperpath;
++      struct inode *root_inode;
++      struct dentry *root_dentry;
++      struct ovl_entry *oe;
++      struct ovl_fs *ufs;
++      int err;
++
++      err = -ENOMEM;
++      ufs = kmalloc(sizeof(struct ovl_fs), GFP_KERNEL);
++      if (!ufs)
++              goto out;
++
++      err = ovl_parse_opt((char *) data, &ufs->config);
++      if (err)
++              goto out_free_ufs;
++
++      err = -EINVAL;
++      if (!ufs->config.upperdir || !ufs->config.lowerdir) {
++              printk(KERN_ERR "overlayfs: missing upperdir or lowerdir\n");
++              goto out_free_config;
++      }
++
++      oe = ovl_alloc_entry();
++      if (oe == NULL)
++              goto out_free_config;
++
++      root_inode = ovl_new_inode(sb, S_IFDIR, oe);
++      if (!root_inode)
++              goto out_free_oe;
++
++      err = kern_path(ufs->config.upperdir, LOOKUP_FOLLOW, &upperpath);
++      if (err)
++              goto out_put_root;
++
++      err = kern_path(ufs->config.lowerdir, LOOKUP_FOLLOW, &lowerpath);
++      if (err)
++              goto out_put_upperpath;
++
++      err = -ENOTDIR;
++      if (!S_ISDIR(upperpath.dentry->d_inode->i_mode) ||
++          !S_ISDIR(lowerpath.dentry->d_inode->i_mode))
++              goto out_put_lowerpath;
++
++      ufs->upper_mnt = clone_private_mount(&upperpath);
++      err = PTR_ERR(ufs->upper_mnt);
++      if (IS_ERR(ufs->upper_mnt)) {
++              printk(KERN_ERR "overlayfs: failed to clone upperpath\n");
++              goto out_put_lowerpath;
++      }
++
++      ufs->lower_mnt = clone_private_mount(&lowerpath);
++      err = PTR_ERR(ufs->lower_mnt);
++      if (IS_ERR(ufs->lower_mnt)) {
++              printk(KERN_ERR "overlayfs: failed to clone lowerpath\n");
++              goto out_put_upper_mnt;
++      }
++
++      if (!(sb->s_flags & MS_RDONLY)) {
++              err = mnt_want_write(ufs->upper_mnt);
++              if (err)
++                      goto out_put_lower_mnt;
++      }
++
++      err = -ENOMEM;
++      root_dentry = d_alloc_root(root_inode);
++      if (!root_dentry)
++              goto out_drop_write;
++
++      mntput(upperpath.mnt);
++      mntput(lowerpath.mnt);
++
++      oe->__upperdentry = dget(upperpath.dentry);
++      oe->lowerdentry = lowerpath.dentry;
++
++      root_dentry->d_fsdata = oe;
++      root_dentry->d_op = &ovl_dentry_operations;
++
++      sb->s_op = &ovl_super_operations;
++      sb->s_root = root_dentry;
++      sb->s_fs_info = ufs;
++
++      return 0;
++
++out_drop_write:
++      if (!(sb->s_flags & MS_RDONLY))
++              mnt_drop_write(ufs->upper_mnt);
++out_put_lower_mnt:
++      mntput(ufs->lower_mnt);
++out_put_upper_mnt:
++      mntput(ufs->upper_mnt);
++out_put_lowerpath:
++      path_put(&lowerpath);
++out_put_upperpath:
++      path_put(&upperpath);
++out_put_root:
++      iput(root_inode);
++out_free_oe:
++      kfree(oe);
++out_free_config:
++      kfree(ufs->config.lowerdir);
++      kfree(ufs->config.upperdir);
++out_free_ufs:
++      kfree(ufs);
++out:
++      return err;
++}
++
++static struct dentry *ovl_mount(struct file_system_type *fs_type, int flags,
++                              const char *dev_name, void *raw_data)
++{
++      return mount_nodev(fs_type, flags, raw_data, ovl_fill_super);
++}
++
++static struct file_system_type ovl_fs_type = {
++      .owner          = THIS_MODULE,
++      .name           = "overlayfs",
++      .mount          = ovl_mount,
++      .kill_sb        = kill_anon_super,
++};
++
++static int __init ovl_init(void)
++{
++      return register_filesystem(&ovl_fs_type);
++}
++
++static void __exit ovl_exit(void)
++{
++      unregister_filesystem(&ovl_fs_type);
++}
++
++module_init(ovl_init);
++module_exit(ovl_exit);
+--- /dev/null
++++ b/Documentation/filesystems/overlayfs.txt
+@@ -0,0 +1,167 @@
++Written by: Neil Brown <neilb@suse.de>
++
++Overlay Filesystem
++==================
++
++This document describes a prototype for a new approach to providing
++overlay-filesystem functionality in Linux (sometimes referred to as
++union-filesystems).  An overlay-filesystem tries to present a
++filesystem which is the result over overlaying one filesystem on top
++of the other.
++
++The result will inevitably fail to look exactly like a normal
++filesystem for various technical reasons.  The expectation is that
++many use cases will be able to ignore these differences.
++
++This approach is 'hybrid' because the objects that appear in the
++filesystem do not all appear to belong to that filesystem.  In many
++cases an object accessed in the union will be indistinguishable
++from accessing the corresponding object from the original filesystem.
++This is most obvious from the 'st_dev' field returned by stat(2).
++
++While directories will report an st_dev from the overlay-filesystem,
++all non-directory objects will report an st_dev from the lower or
++upper filesystem that is providing the object.  Similarly st_ino will
++only be unique when combined with st_dev, and both of these can change
++over the lifetime of a non-directory object.  Many applications and
++tools ignore these values and will not be affected.
++
++Upper and Lower
++---------------
++
++An overlay filesystem combines two filesystems - an 'upper' filesystem
++and a 'lower' filesystem.  When a name exists in both filesystems, the
++object in the 'upper' filesystem is visible while the object in the
++'lower' filesystem is either hidden or, in the case of directories,
++merged with the 'upper' object.
++
++It would be more correct to refer to an upper and lower 'directory
++tree' rather than 'filesystem' as it is quite possible for both
++directory trees to be in the same filesystem and there is no
++requirement that the root of a filesystem be given for either upper or
++lower.
++
++The lower filesystem can be any filesystem supported by Linux and does
++not need to be writable.  The lower filesystem can even be another
++overlayfs.  The upper filesystem will normally be writable and if it
++is it must support the creation of trusted.* extended attributes, and
++must provide valid d_type in readdir responses, at least for symbolic
++links - so NFS is not suitable.
++
++A read-only overlay of two read-only filesystems may use any
++filesystem type.
++
++Directories
++-----------
++
++Overlaying mainly involved directories.  If a given name appears in both
++upper and lower filesystems and refers to a non-directory in either,
++then the lower object is hidden - the name refers only to the upper
++object.
++
++Where both upper and lower objects are directories, a merged directory
++is formed.
++
++At mount time, the two directories given as mount options are combined
++into a merged directory:
++
++  mount -t overlayfs overlayfs -olowerdir=/lower,upperdir=/upper /overlay
++
++Then whenever a lookup is requested in such a merged directory, the
++lookup is performed in each actual directory and the combined result
++is cached in the dentry belonging to the overlay filesystem.  If both
++actual lookups find directories, both are stored and a merged
++directory is created, otherwise only one is stored: the upper if it
++exists, else the lower.
++
++Only the lists of names from directories are merged.  Other content
++such as metadata and extended attributes are reported for the upper
++directory only.  These attributes of the lower directory are hidden.
++
++whiteouts and opaque directories
++--------------------------------
++
++In order to support rm and rmdir without changing the lower
++filesystem, an overlay filesystem needs to record in the upper filesystem
++that files have been removed.  This is done using whiteouts and opaque
++directories (non-directories are always opaque).
++
++The overlay filesystem uses extended attributes with a
++"trusted.overlay."  prefix to record these details.
++
++A whiteout is created as a symbolic link with target
++"(overlay-whiteout)" and with xattr "trusted.overlay.whiteout" set to "y".
++When a whiteout is found in the upper level of a merged directory, any
++matching name in the lower level is ignored, and the whiteout itself
++is also hidden.
++
++A directory is made opaque by setting the xattr "trusted.overlay.opaque"
++to "y".  Where the upper filesystem contains an opaque directory, any
++directory in the lower filesystem with the same name is ignored.
++
++readdir
++-------
++
++When a 'readdir' request is made on a merged directory, the upper and
++lower directories are each read and the name lists merged in the
++obvious way (upper is read first, then lower - entries that already
++exist are not re-added).  This merged name list is cached in the
++'struct file' and so remains as long as the file is kept open.  If the
++directory is opened and read by two processes at the same time, they
++will each have separate caches.  A seekdir to the start of the
++directory (offset 0) followed by a readdir will cause the cache to be
++discarded and rebuilt.
++
++This means that changes to the merged directory do not appear while a
++directory is being read.  This is unlikely to be noticed by many
++programs.
++
++seek offsets are assigned sequentially when the directories are read.
++Thus if
++  - read part of a directory
++  - remember an offset, and close the directory
++  - re-open the directory some time later
++  - seek to the remembered offset
++
++there may be little correlation between the old and new locations in
++the list of filenames, particularly if anything has changed in the
++directory.
++
++Readdir on directories that are not merged is simply handled by the
++underlying directory (upper or lower).
++
++
++Non-directories
++---------------
++
++Objects that are not directories (files, symlinks, device-special
++files etc.) are presented either from the upper or lower filesystem as
++appropriate.  When a file in the lower filesystem is accessed in a way
++the requires write-access, such as opening for write access, changing
++some metadata etc., the file is first copied from the lower filesystem
++to the upper filesystem (copy_up).  Note that creating a hard-link
++also requires copy_up, though of course creation of a symlink does
++not.
++
++The copy_up process first makes sure that the containing directory
++exists in the upper filesystem - creating it and any parents as
++necessary.  It then creates the object with the same metadata (owner,
++mode, mtime, symlink-target etc.) and then if the object is a file, the
++data is copied from the lower to the upper filesystem.  Finally any
++extended attributes are copied up.
++
++Once the copy_up is complete, the overlay filesystem simply
++provides direct access to the newly created file in the upper
++filesystem - future operations on the file are barely noticed by the
++overlay filesystem (though an operation on the name of the file such as
++rename or unlink will of course be noticed and handled).
++
++Changes to underlying filesystems
++---------------------------------
++
++Offline changes, when the overlay is not mounted, are allowed to either
++the upper or the lower trees.
++
++Changes to the underlying filesystems while part of a mounted overlay
++filesystem are not allowed.  This is not yet enforced, but will be in
++the future.
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -4713,6 +4713,13 @@ F:      drivers/scsi/osd/
+ F:    include/scsi/osd_*
+ F:    fs/exofs/
+ 
++OVERLAYFS FILESYSTEM
++M:    Miklos Szeredi <miklos@szeredi.hu>
++L:    linux-fsdevel@vger.kernel.org
++S:    Supported
++F:    fs/overlayfs/*
++F:    Documentation/filesystems/overlayfs.txt
++
+ P54 WIRELESS DRIVER
+ M:    Christian Lamparter <chunkeey@googlemail.com>
+ L:    linux-wireless@vger.kernel.org

diff --git a/target/linux/generic/patches-3.0/110-fix_mtd_include.patch b/target/linux/generic/patches-3.0/110-fix_mtd_include.patch
new file mode 100644 (file)
index 0000000..c63dbc0
--- /dev/null
+++ b/target/linux/generic/patches-3.0/110-fix_mtd_include.patch
@@ -0,0 +1,10 @@
+--- a/include/linux/mtd/physmap.h
++++ b/include/linux/mtd/physmap.h
+@@ -17,6 +17,7 @@
+ 
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
++#include <linux/platform_device.h>
+ 
+ struct map_info;
+ struct platform_device;

diff --git a/target/linux/generic/patches-3.0/200-fix_localversion.patch b/target/linux/generic/patches-3.0/200-fix_localversion.patch
new file mode 100644 (file)
index 0000000..0d1bae8
--- /dev/null
+++ b/target/linux/generic/patches-3.0/200-fix_localversion.patch
@@ -0,0 +1,11 @@
+--- a/scripts/setlocalversion
++++ b/scripts/setlocalversion
+@@ -168,7 +168,7 @@ else
+       # annotated or signed tagged state (as git describe only
+       # looks at signed or annotated tags - git tag -a/-s) and
+       # LOCALVERSION= is not specified
+-      if test "${LOCALVERSION+set}" != "set"; then
++      if test "${CONFIG_LOCALVERSION+set}" != "set"; then
+               scm=$(scm_version --short)
+               res="$res${scm:++}"
+       fi

diff --git a/target/linux/generic/patches-3.0/201-extra_optimization.patch b/target/linux/generic/patches-3.0/201-extra_optimization.patch
new file mode 100644 (file)
index 0000000..6fe8b09
--- /dev/null
+++ b/target/linux/generic/patches-3.0/201-extra_optimization.patch
@@ -0,0 +1,24 @@
+--- a/Makefile
++++ b/Makefile
+@@ -559,9 +559,9 @@ endif # $(dot-config)
+ all: vmlinux
+ 
+ ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
+-KBUILD_CFLAGS += -Os
++KBUILD_CFLAGS += -Os -fno-caller-saves
+ else
+-KBUILD_CFLAGS += -O2
++KBUILD_CFLAGS += -O2 -fno-reorder-blocks -fno-tree-ch -fno-caller-saves
+ endif
+ 
+ include $(srctree)/arch/$(SRCARCH)/Makefile
+@@ -620,6 +620,9 @@ endif
+ NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
+ CHECKFLAGS     += $(NOSTDINC_FLAGS)
+ 
++# improve gcc optimization
++CFLAGS += $(call cc-option,-funit-at-a-time,)
++
+ # warn about C99 declaration after statement
+ KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
+ 

diff --git a/target/linux/generic/patches-3.0/210-darwin_scripts_include.patch b/target/linux/generic/patches-3.0/210-darwin_scripts_include.patch
new file mode 100644 (file)
index 0000000..d959566
--- /dev/null
+++ b/target/linux/generic/patches-3.0/210-darwin_scripts_include.patch
@@ -0,0 +1,78 @@
+--- a/scripts/kallsyms.c
++++ b/scripts/kallsyms.c
+@@ -22,6 +22,35 @@
+ #include <stdlib.h>
+ #include <string.h>
+ #include <ctype.h>
++#ifdef __APPLE__
++/* Darwin has no memmem implementation, this one is ripped of the uClibc-0.9.28 source */
++void *memmem (const void *haystack, size_t haystack_len,
++                          const void *needle,  size_t needle_len)
++{
++  const char *begin;
++  const char *const last_possible
++    = (const char *) haystack + haystack_len - needle_len;
++
++  if (needle_len == 0)
++    /* The first occurrence of the empty string is deemed to occur at
++       the beginning of the string.  */
++    return (void *) haystack;
++
++  /* Sanity check, otherwise the loop might search through the whole
++     memory.  */
++  if (__builtin_expect (haystack_len < needle_len, 0))
++    return NULL;
++
++  for (begin = (const char *) haystack; begin <= last_possible; ++begin)
++    if (begin[0] == ((const char *) needle)[0] &&
++        !memcmp ((const void *) &begin[1],
++                 (const void *) ((const char *) needle + 1),
++                 needle_len - 1))
++      return (void *) begin;
++
++  return NULL;
++}
++#endif
+ 
+ #ifndef ARRAY_SIZE
+ #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
+--- a/scripts/kconfig/Makefile
++++ b/scripts/kconfig/Makefile
+@@ -148,6 +148,9 @@ check-lxdialog  := $(srctree)/$(src)/lxd
+ # we really need to do so. (Do not call gcc as part of make mrproper)
+ HOST_EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags) \
+                     -DLOCALE
++ifeq ($(shell uname -s),Darwin)
++HOST_LOADLIBES  += -lncurses
++endif
+ 
+ # ===========================================================================
+ # Shared Makefile for the various kconfig executables:
+--- a/scripts/mod/mk_elfconfig.c
++++ b/scripts/mod/mk_elfconfig.c
+@@ -1,7 +1,11 @@
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
++#ifndef __APPLE__
+ #include <elf.h>
++#else
++#include "../../../../../tools/sstrip/include/elf.h"
++#endif
+ 
+ int
+ main(int argc, char **argv)
+--- a/scripts/mod/modpost.h
++++ b/scripts/mod/modpost.h
+@@ -7,7 +7,11 @@
+ #include <sys/mman.h>
+ #include <fcntl.h>
+ #include <unistd.h>
++#if !(defined(__APPLE__) || defined(__CYGWIN__))
+ #include <elf.h>
++#else
++#include "../../../../../tools/sstrip/include/elf.h"
++#endif
+ 
+ #include "elfconfig.h"
+ 

diff --git a/target/linux/generic/patches-3.0/211-stddef_include.patch b/target/linux/generic/patches-3.0/211-stddef_include.patch
new file mode 100644 (file)
index 0000000..7fe248d
--- /dev/null
+++ b/target/linux/generic/patches-3.0/211-stddef_include.patch
@@ -0,0 +1,17 @@
+--- a/include/linux/stddef.h
++++ b/include/linux/stddef.h
+@@ -16,6 +16,7 @@ enum {
+       false   = 0,
+       true    = 1
+ };
++#endif /* __KERNEL__ */
+ 
+ #undef offsetof
+ #ifdef __compiler_offsetof
+@@ -23,6 +24,5 @@ enum {
+ #else
+ #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+ #endif
+-#endif /* __KERNEL__ */
+ 
+ #endif

diff --git a/target/linux/generic/patches-3.0/220-module_exports.patch b/target/linux/generic/patches-3.0/220-module_exports.patch
new file mode 100644 (file)
index 0000000..322fe85
--- /dev/null
+++ b/target/linux/generic/patches-3.0/220-module_exports.patch
@@ -0,0 +1,89 @@
+--- a/include/asm-generic/vmlinux.lds.h
++++ b/include/asm-generic/vmlinux.lds.h
+@@ -52,6 +52,27 @@
+ #define LOAD_OFFSET 0
+ #endif
+ 
++#ifndef SYMTAB_KEEP_STR
++#define SYMTAB_KEEP_STR *(__ksymtab_strings+*)
++#define SYMTAB_DISCARD_STR
++#else
++#define SYMTAB_DISCARD_STR *(__ksymtab_strings+*)
++#endif
++
++#ifndef SYMTAB_KEEP
++#define SYMTAB_KEEP *(SORT(___ksymtab+*))
++#define SYMTAB_DISCARD
++#else
++#define SYMTAB_DISCARD *(SORT(___ksymtab+*))
++#endif
++
++#ifndef SYMTAB_KEEP_GPL
++#define SYMTAB_KEEP_GPL *(SORT(___ksymtab_gpl+*))
++#define SYMTAB_DISCARD_GPL
++#else
++#define SYMTAB_DISCARD_GPL *(SORT(___ksymtab_gpl+*))
++#endif
++
+ #ifndef SYMBOL_PREFIX
+ #define VMLINUX_SYMBOL(sym) sym
+ #else
+@@ -276,14 +297,14 @@
+       /* Kernel symbol table: Normal symbols */                       \
+       __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
+               VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
+-              *(SORT(___ksymtab+*))                                   \
++              SYMTAB_KEEP                                             \
+               VMLINUX_SYMBOL(__stop___ksymtab) = .;                   \
+       }                                                               \
+                                                                       \
+       /* Kernel symbol table: GPL-only symbols */                     \
+       __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
+               VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;              \
+-              *(SORT(___ksymtab_gpl+*))                               \
++              SYMTAB_KEEP_GPL                                         \
+               VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
+       }                                                               \
+                                                                       \
+@@ -345,7 +366,7 @@
+                                                                       \
+       /* Kernel symbol table: strings */                              \
+         __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) {       \
+-              *(__ksymtab_strings)                                    \
++              SYMTAB_KEEP_STR                                         \
+       }                                                               \
+                                                                       \
+       /* __*init sections */                                          \
+@@ -677,6 +698,9 @@
+       EXIT_TEXT                                                       \
+       EXIT_DATA                                                       \
+       EXIT_CALL                                                       \
++      SYMTAB_DISCARD                                                  \
++      SYMTAB_DISCARD_GPL                                              \
++      SYMTAB_DISCARD_STR                                              \
+       *(.discard)                                                     \
+       *(.discard.*)                                                   \
+       }
+--- a/include/linux/module.h
++++ b/include/linux/module.h
+@@ -230,12 +230,19 @@ struct module_use {
+ #define __CRC_SYMBOL(sym, sec)
+ #endif
+ 
++#ifdef MODULE
++#define __EXPORT_SUFFIX(sym)
++#else
++#define __EXPORT_SUFFIX(sym) "+" #sym
++#endif
++
+ /* For every exported symbol, place a struct in the __ksymtab section */
+ #define __EXPORT_SYMBOL(sym, sec)                             \
+       extern typeof(sym) sym;                                 \
+       __CRC_SYMBOL(sym, sec)                                  \
+       static const char __kstrtab_##sym[]                     \
+-      __attribute__((section("__ksymtab_strings"), aligned(1))) \
++      __attribute__((section("__ksymtab_strings"              \
++        __EXPORT_SUFFIX(sym)), aligned(1)))                   \
+       = MODULE_SYMBOL_PREFIX #sym;                            \
+       static const struct kernel_symbol __ksymtab_##sym       \
+       __used                                                  \

diff --git a/target/linux/generic/patches-3.0/230-openwrt_lzma_options.patch b/target/linux/generic/patches-3.0/230-openwrt_lzma_options.patch
new file mode 100644 (file)
index 0000000..4bdef40
--- /dev/null
+++ b/target/linux/generic/patches-3.0/230-openwrt_lzma_options.patch
@@ -0,0 +1,54 @@
+--- a/scripts/Makefile.lib
++++ b/scripts/Makefile.lib
+@@ -254,7 +254,7 @@ cmd_bzip2 = (cat $(filter-out FORCE,$^)
+ 
+ quiet_cmd_lzma = LZMA    $@
+ cmd_lzma = (cat $(filter-out FORCE,$^) | \
+-      lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
++      lzma e -d20 -lc1 -lp2 -pb2 -eos -si -so && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
+       (rm -f $@ ; false)
+ 
+ quiet_cmd_lzo = LZO     $@
+--- a/scripts/gen_initramfs_list.sh
++++ b/scripts/gen_initramfs_list.sh
+@@ -226,7 +226,7 @@ cpio_list=
+ output="/dev/stdout"
+ output_file=""
+ is_cpio_compressed=
+-compr="gzip -n -9 -f"
++compr="gzip -n -9 -f -"
+ 
+ arg="$1"
+ case "$arg" in
+@@ -240,9 +240,9 @@ case "$arg" in
+               output_file="$1"
+               cpio_list="$(mktemp ${TMPDIR:-/tmp}/cpiolist.XXXXXX)"
+               output=${cpio_list}
+-              echo "$output_file" | grep -q "\.gz$" && compr="gzip -n -9 -f"
+-              echo "$output_file" | grep -q "\.bz2$" && compr="bzip2 -9 -f"
+-              echo "$output_file" | grep -q "\.lzma$" && compr="lzma -9 -f"
++              echo "$output_file" | grep -q "\.gz$" && compr="gzip -n -9 -f -"
++              echo "$output_file" | grep -q "\.bz2$" && compr="bzip2 -9 -f -"
++              echo "$output_file" | grep -q "\.lzma$" && compr="lzma e -d20 -lc1 -lp2 -pb2 -eos -si -so"
+               echo "$output_file" | grep -q "\.xz$" && \
+                               compr="xz --check=crc32 --lzma2=dict=1MiB"
+               echo "$output_file" | grep -q "\.lzo$" && compr="lzop -9 -f"
+@@ -303,7 +303,7 @@ if [ ! -z ${output_file} ]; then
+       if [ "${is_cpio_compressed}" = "compressed" ]; then
+               cat ${cpio_tfile} > ${output_file}
+       else
+-              (cat ${cpio_tfile} | ${compr}  - > ${output_file}) \
++              (cat ${cpio_tfile} | ${compr} > ${output_file}) \
+               || (rm -f ${output_file} ; false)
+       fi
+       [ -z ${cpio_file} ] && rm ${cpio_tfile}
+--- a/lib/decompress.c
++++ b/lib/decompress.c
+@@ -40,6 +40,7 @@ static const struct compress_format {
+       { {037, 0236}, "gzip", gunzip },
+       { {0x42, 0x5a}, "bzip2", bunzip2 },
+       { {0x5d, 0x00}, "lzma", unlzma },
++      { {0x6d, 0x00}, "lzma-openwrt", unlzma },
+       { {0xfd, 0x37}, "xz", unxz },
+       { {0x89, 0x4c}, "lzo", unlzo },
+       { {0, 0}, NULL, NULL }

diff --git a/target/linux/generic/patches-3.0/250-netfilter_depends.patch b/target/linux/generic/patches-3.0/250-netfilter_depends.patch
new file mode 100644 (file)
index 0000000..6560460
--- /dev/null
+++ b/target/linux/generic/patches-3.0/250-netfilter_depends.patch
@@ -0,0 +1,18 @@
+--- a/net/netfilter/Kconfig
++++ b/net/netfilter/Kconfig
+@@ -163,7 +163,6 @@ config NF_CONNTRACK_FTP
+ 
+ config NF_CONNTRACK_H323
+       tristate "H.323 protocol support"
+-      depends on (IPV6 || IPV6=n)
+       depends on NETFILTER_ADVANCED
+       help
+         H.323 is a VoIP signalling protocol from ITU-T. As one of the most
+@@ -611,7 +610,6 @@ config NETFILTER_XT_TARGET_SECMARK
+ 
+ config NETFILTER_XT_TARGET_TCPMSS
+       tristate '"TCPMSS" target support'
+-      depends on (IPV6 || IPV6=n)
+       default m if NETFILTER_ADVANCED=n
+       ---help---
+         This option adds a `TCPMSS' target, which allows you to alter the

diff --git a/target/linux/generic/patches-3.0/251-sound_kconfig.patch b/target/linux/generic/patches-3.0/251-sound_kconfig.patch
new file mode 100644 (file)
index 0000000..fb3df25
--- /dev/null
+++ b/target/linux/generic/patches-3.0/251-sound_kconfig.patch
@@ -0,0 +1,11 @@
+--- a/sound/core/Kconfig
++++ b/sound/core/Kconfig
+@@ -8,7 +8,7 @@ config SND_PCM
+       select GCD
+ 
+ config SND_HWDEP
+-      tristate
++      tristate "Sound hardware support"
+ 
+ config SND_RAWMIDI
+       tristate

diff --git a/target/linux/generic/patches-3.0/252-mv_cesa_depends.patch b/target/linux/generic/patches-3.0/252-mv_cesa_depends.patch
new file mode 100644 (file)
index 0000000..b43d29c
--- /dev/null
+++ b/target/linux/generic/patches-3.0/252-mv_cesa_depends.patch
@@ -0,0 +1,10 @@
+--- a/drivers/crypto/Kconfig
++++ b/drivers/crypto/Kconfig
+@@ -172,6 +172,7 @@ config CRYPTO_DEV_MV_CESA
+       depends on PLAT_ORION
+       select CRYPTO_ALGAPI
+       select CRYPTO_AES
++      select CRYPTO_HASH2
+       select CRYPTO_BLKCIPHER2
+       help
+         This driver allows you to utilize the Cryptographic Engines and

diff --git a/target/linux/generic/patches-3.0/253-ssb_b43_default_on.patch b/target/linux/generic/patches-3.0/253-ssb_b43_default_on.patch
new file mode 100644 (file)
index 0000000..3176dcb
--- /dev/null
+++ b/target/linux/generic/patches-3.0/253-ssb_b43_default_on.patch
@@ -0,0 +1,19 @@
+--- a/drivers/ssb/Kconfig
++++ b/drivers/ssb/Kconfig
+@@ -29,6 +29,7 @@ config SSB_SPROM
+ config SSB_BLOCKIO
+       bool
+       depends on SSB
++      default y
+ 
+ config SSB_PCIHOST_POSSIBLE
+       bool
+@@ -49,7 +50,7 @@ config SSB_PCIHOST
+ config SSB_B43_PCI_BRIDGE
+       bool
+       depends on SSB_PCIHOST
+-      default n
++      default y
+ 
+ config SSB_PCMCIAHOST_POSSIBLE
+       bool

diff --git a/target/linux/generic/patches-3.0/254-textsearch_kconfig_hacks.patch b/target/linux/generic/patches-3.0/254-textsearch_kconfig_hacks.patch
new file mode 100644 (file)
index 0000000..8655803
--- /dev/null
+++ b/target/linux/generic/patches-3.0/254-textsearch_kconfig_hacks.patch
@@ -0,0 +1,23 @@
+--- a/lib/Kconfig
++++ b/lib/Kconfig
+@@ -190,16 +190,16 @@ config BCH_CONST_T
+ # Textsearch support is select'ed if needed
+ #
+ config TEXTSEARCH
+-      boolean
++      boolean "Textsearch support"
+ 
+ config TEXTSEARCH_KMP
+-      tristate
++      tristate "Textsearch KMP"
+ 
+ config TEXTSEARCH_BM
+-      tristate
++      tristate "Textsearch BM"
+ 
+ config TEXTSEARCH_FSM
+-      tristate
++      tristate "Textsearch FSM"
+ 
+ config BTREE
+       boolean

diff --git a/target/linux/generic/patches-3.0/255-lib80211_kconfig_hacks.patch b/target/linux/generic/patches-3.0/255-lib80211_kconfig_hacks.patch
new file mode 100644 (file)
index 0000000..c044dea
--- /dev/null
+++ b/target/linux/generic/patches-3.0/255-lib80211_kconfig_hacks.patch
@@ -0,0 +1,19 @@
+--- a/net/wireless/Kconfig
++++ b/net/wireless/Kconfig
+@@ -142,13 +142,13 @@ config LIB80211
+         you want this built into your kernel.
+ 
+ config LIB80211_CRYPT_WEP
+-      tristate
++      tristate "LIB80211_CRYPT_WEP"
+ 
+ config LIB80211_CRYPT_CCMP
+-      tristate
++      tristate "LIB80211_CRYPT_CCMP"
+ 
+ config LIB80211_CRYPT_TKIP
+-      tristate
++      tristate "LIB80211_CRYPT_TKIP"
+ 
+ config LIB80211_DEBUG
+       bool "lib80211 debugging messages"

diff --git a/target/linux/generic/patches-3.0/256-crypto_add_kconfig_prompts.patch b/target/linux/generic/patches-3.0/256-crypto_add_kconfig_prompts.patch
new file mode 100644 (file)
index 0000000..8462c71
--- /dev/null
+++ b/target/linux/generic/patches-3.0/256-crypto_add_kconfig_prompts.patch
@@ -0,0 +1,47 @@
+--- a/crypto/Kconfig
++++ b/crypto/Kconfig
+@@ -31,7 +31,7 @@ config CRYPTO_FIPS
+         this is.
+ 
+ config CRYPTO_ALGAPI
+-      tristate
++      tristate "ALGAPI"
+       select CRYPTO_ALGAPI2
+       help
+         This option provides the API for cryptographic algorithms.
+@@ -40,7 +40,7 @@ config CRYPTO_ALGAPI2
+       tristate
+ 
+ config CRYPTO_AEAD
+-      tristate
++      tristate "AEAD"
+       select CRYPTO_AEAD2
+       select CRYPTO_ALGAPI
+ 
+@@ -49,7 +49,7 @@ config CRYPTO_AEAD2
+       select CRYPTO_ALGAPI2
+ 
+ config CRYPTO_BLKCIPHER
+-      tristate
++      tristate "BLKCIPHER"
+       select CRYPTO_BLKCIPHER2
+       select CRYPTO_ALGAPI
+ 
+@@ -60,7 +60,7 @@ config CRYPTO_BLKCIPHER2
+       select CRYPTO_WORKQUEUE
+ 
+ config CRYPTO_HASH
+-      tristate
++      tristate "HASH"
+       select CRYPTO_HASH2
+       select CRYPTO_ALGAPI
+ 
+@@ -69,7 +69,7 @@ config CRYPTO_HASH2
+       select CRYPTO_ALGAPI2
+ 
+ config CRYPTO_RNG
+-      tristate
++      tristate "RNG"
+       select CRYPTO_RNG2
+       select CRYPTO_ALGAPI
+ 

diff --git a/target/linux/generic/patches-3.0/257-wireless_ext_kconfig_hack.patch b/target/linux/generic/patches-3.0/257-wireless_ext_kconfig_hack.patch
new file mode 100644 (file)
index 0000000..daac589
--- /dev/null
+++ b/target/linux/generic/patches-3.0/257-wireless_ext_kconfig_hack.patch
@@ -0,0 +1,22 @@
+--- a/net/wireless/Kconfig
++++ b/net/wireless/Kconfig
+@@ -1,5 +1,5 @@
+ config WIRELESS_EXT
+-      bool
++      bool "Wireless extensions"
+ 
+ config WEXT_CORE
+       def_bool y
+@@ -11,10 +11,10 @@ config WEXT_PROC
+       depends on WEXT_CORE
+ 
+ config WEXT_SPY
+-      bool
++      bool "WEXT_SPY"
+ 
+ config WEXT_PRIV
+-      bool
++      bool "WEXT_PRIV"
+ 
+ config CFG80211
+       tristate "cfg80211 - wireless configuration API"

diff --git a/target/linux/generic/patches-3.0/300-mips_expose_boot_raw.patch b/target/linux/generic/patches-3.0/300-mips_expose_boot_raw.patch
new file mode 100644 (file)
index 0000000..20f534e
--- /dev/null
+++ b/target/linux/generic/patches-3.0/300-mips_expose_boot_raw.patch
@@ -0,0 +1,39 @@
+From: Mark Miller <mark@mirell.org>
+
+This exposes the CONFIG_BOOT_RAW symbol in Kconfig. This is needed on
+certain Broadcom chipsets running CFE in order to load the kernel.
+
+Signed-off-by: Mark Miller <mark@mirell.org>
+Acked-by: Rob Landley <rob@landley.net>
+---
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -850,9 +850,6 @@ config ARC
+ config ARCH_MAY_HAVE_PC_FDC
+       bool
+ 
+-config BOOT_RAW
+-      bool
+-
+ config CEVT_BCM1480
+       bool
+ 
+@@ -2300,6 +2297,18 @@ config USE_OF
+       help
+         Include support for flattened device tree machine descriptions.
+ 
++config BOOT_RAW
++      bool "Enable the kernel to be executed from the load address"
++      default n
++      help
++       Allow the kernel to be executed from the load address for
++       bootloaders which cannot read the ELF format. This places
++       a jump to start_kernel at the load address.
++
++       If unsure, say N.
++
++
++
+ endmenu
+ 
+ config LOCKDEP_SUPPORT

diff --git a/target/linux/generic/patches-3.0/301-mips_image_cmdline_hack.patch b/target/linux/generic/patches-3.0/301-mips_image_cmdline_hack.patch
new file mode 100644 (file)
index 0000000..b87fb34
--- /dev/null
+++ b/target/linux/generic/patches-3.0/301-mips_image_cmdline_hack.patch
@@ -0,0 +1,28 @@
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -949,6 +949,10 @@ config SYNC_R4K
+ config MIPS_MACHINE
+       def_bool n
+ 
++config IMAGE_CMDLINE_HACK
++      bool "OpenWrt specific image command line hack"
++      default n
++
+ config NO_IOPORT
+       def_bool n
+ 
+--- a/arch/mips/kernel/head.S
++++ b/arch/mips/kernel/head.S
+@@ -141,6 +141,12 @@ FEXPORT(__kernel_entry)
+       j       kernel_entry
+ #endif
+ 
++#ifdef CONFIG_IMAGE_CMDLINE_HACK
++      .ascii  "CMDLINE:"
++EXPORT(__image_cmdline)
++      .fill   0x400
++#endif /* CONFIG_IMAGE_CMDLINE_HACK */
++
+       __REF
+ 
+ NESTED(kernel_entry, 16, sp)                  # kernel entry point

diff --git a/target/linux/generic/patches-3.0/302-mips_use_generic_thread_info_allocator.patch b/target/linux/generic/patches-3.0/302-mips_use_generic_thread_info_allocator.patch
new file mode 100644 (file)
index 0000000..1bcc74b
--- /dev/null
+++ b/target/linux/generic/patches-3.0/302-mips_use_generic_thread_info_allocator.patch
@@ -0,0 +1,18 @@
+--- a/arch/mips/include/asm/thread_info.h
++++ b/arch/mips/include/asm/thread_info.h
+@@ -85,6 +85,7 @@ register struct thread_info *__current_t
+ 
+ #define STACK_WARN    (THREAD_SIZE / 8)
+ 
++#if 0
+ #define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
+ 
+ #ifdef CONFIG_DEBUG_STACK_USAGE
+@@ -96,6 +97,7 @@ register struct thread_info *__current_t
+ #endif
+ 
+ #define free_thread_info(info) kfree(info)
++#endif
+ 
+ #endif /* !__ASSEMBLY__ */
+ 

diff --git a/target/linux/generic/patches-3.0/303-mips_fix_kexec.patch b/target/linux/generic/patches-3.0/303-mips_fix_kexec.patch
new file mode 100644 (file)
index 0000000..e6928dd
--- /dev/null
+++ b/target/linux/generic/patches-3.0/303-mips_fix_kexec.patch
@@ -0,0 +1,11 @@
+--- a/arch/mips/kernel/machine_kexec.c
++++ b/arch/mips/kernel/machine_kexec.c
+@@ -52,7 +52,7 @@ machine_kexec(struct kimage *image)
+       reboot_code_buffer =
+         (unsigned long)page_address(image->control_code_page);
+ 
+-      kexec_start_address = image->start;
++      kexec_start_address = (unsigned long) phys_to_virt(image->start);
+       kexec_indirection_page =
+               (unsigned long) phys_to_virt(image->head & PAGE_MASK);
+ 

diff --git a/target/linux/generic/patches-3.0/304-mips_disable_fpu.patch b/target/linux/generic/patches-3.0/304-mips_disable_fpu.patch
new file mode 100644 (file)
index 0000000..a33885a
--- /dev/null
+++ b/target/linux/generic/patches-3.0/304-mips_disable_fpu.patch
@@ -0,0 +1,160 @@
+MIPS: allow disabling the kernel FPU emulator
+
+This patch allows turning off the in-kernel Algorithmics
+FPU emulator support, which allows one to save a couple of
+precious blocks on an embedded system.
+
+Signed-off-by: Florian Fainelli <florian@openwrt.org>
+--
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -934,6 +934,17 @@ config I8259
+ config MIPS_BONITO64
+       bool
+ 
++config MIPS_FPU_EMU
++      bool "Enable FPU emulation"
++      default y
++      help
++         This option allows building a kernel with or without the Algorithmics
++         FPU emulator enabled. Turning off this option results in a kernel which
++         does not catch floating operations exceptions. Make sure that your toolchain
++         is configured to enable software floating point emulation in that case.
++              
++         If unsure say Y here.
++
+ config MIPS_MSC
+       bool
+ 
+--- a/arch/mips/math-emu/Makefile
++++ b/arch/mips/math-emu/Makefile
+@@ -2,11 +2,13 @@
+ # Makefile for the Linux/MIPS kernel FPU emulation.
+ #
+ 
+-obj-y := cp1emu.o ieee754m.o ieee754d.o ieee754dp.o ieee754sp.o ieee754.o \
++obj-y :=      kernel_linkage.o dsemul.o cp1emu.o
++
++obj-$(CONFIG_MIPS_FPU_EMU)    += ieee754m.o ieee754d.o ieee754dp.o ieee754sp.o ieee754.o \
+          ieee754xcpt.o dp_frexp.o dp_modf.o dp_div.o dp_mul.o dp_sub.o \
+          dp_add.o dp_fsp.o dp_cmp.o dp_logb.o dp_scalb.o dp_simple.o \
+          dp_tint.o dp_fint.o dp_tlong.o dp_flong.o sp_frexp.o sp_modf.o \
+          sp_div.o sp_mul.o sp_sub.o sp_add.o sp_fdp.o sp_cmp.o sp_logb.o \
+          sp_scalb.o sp_simple.o sp_tint.o sp_fint.o sp_tlong.o sp_flong.o \
+-         dp_sqrt.o sp_sqrt.o kernel_linkage.o dsemul.o
++         dp_sqrt.o sp_sqrt.o
+ 
+--- a/arch/mips/math-emu/cp1emu.c
++++ b/arch/mips/math-emu/cp1emu.c
+@@ -58,7 +58,11 @@
+ #define __mips 4
+ 
+ /* Function which emulates a floating point instruction. */
++#ifdef CONFIG_DEBUG_FS
++DEFINE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
++#endif
+ 
++#ifdef CONFIG_MIPS_FPU_EMU
+ static int fpu_emu(struct pt_regs *, struct mips_fpu_struct *,
+       mips_instruction);
+ 
+@@ -69,10 +73,6 @@ static int fpux_emu(struct pt_regs *,
+ 
+ /* Further private data for which no space exists in mips_fpu_struct */
+ 
+-#ifdef CONFIG_DEBUG_FS
+-DEFINE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
+-#endif
+-
+ /* Control registers */
+ 
+ #define FPCREG_RID    0       /* $0  = revision id */
+@@ -1361,7 +1361,6 @@ int fpu_emulator_cop1Handler(struct pt_r
+ 
+       return sig;
+ }
+-
+ #ifdef CONFIG_DEBUG_FS
+ 
+ static int fpuemu_stat_get(void *data, u64 *val)
+@@ -1410,4 +1409,11 @@ static int __init debugfs_fpuemu(void)
+       return 0;
+ }
+ __initcall(debugfs_fpuemu);
+-#endif
++#endif /* CONFIG_DEBUGFS */
++#else
++int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
++        int has_fpu)
++{
++      return 0;
++}
++#endif /* CONFIG_MIPS_FPU_EMU */
+--- a/arch/mips/math-emu/dsemul.c
++++ b/arch/mips/math-emu/dsemul.c
+@@ -109,6 +109,7 @@ int mips_dsemul(struct pt_regs *regs, mi
+       return SIGILL;          /* force out of emulation loop */
+ }
+ 
++#ifdef CONFIG_MIPS_FPU_EMU
+ int do_dsemulret(struct pt_regs *xcp)
+ {
+       struct emuframe __user *fr;
+@@ -165,3 +166,9 @@ int do_dsemulret(struct pt_regs *xcp)
+ 
+       return 1;
+ }
++#else
++int do_dsemulret(struct pt_regs *xcp)
++{
++      return 0;
++}
++#endif /* CONFIG_MIPS_FPU_EMU */
+--- a/arch/mips/math-emu/kernel_linkage.c
++++ b/arch/mips/math-emu/kernel_linkage.c
+@@ -29,6 +29,7 @@
+ 
+ #define SIGNALLING_NAN 0x7ff800007ff80000LL
+ 
++#ifdef CONFIG_MIPS_FPU_EMU
+ void fpu_emulator_init_fpu(void)
+ {
+       static int first = 1;
+@@ -112,4 +113,36 @@ int fpu_emulator_restore_context32(struc
+ 
+       return err;
+ }
+-#endif
++#endif        /* CONFIG_64BIT */
++#else
++
++void fpu_emulator_init_fpu(void)
++{
++      printk(KERN_INFO "FPU emulator disabled, make sure your toolchain"
++              "was compiled with software floating point support (soft-float)\n");
++      return;
++}
++
++int fpu_emulator_save_context(struct sigcontext __user *sc)
++{
++      return 0;
++}
++
++int fpu_emulator_restore_context(struct sigcontext __user *sc)
++{
++      return 0;
++}
++
++int fpu_emulator_save_context32(struct sigcontext32 __user *sc)
++{
++      return 0;
++}
++
++int fpu_emulator_restore_context32(struct sigcontext32 __user *sc)
++{
++      return 0;
++}
++
++#ifdef CONFIG_64BIT
++#endif        /* CONFIG_64BIT */
++#endif /* CONFIG_MIPS_FPU_EMU */

diff --git a/target/linux/generic/patches-3.0/305-mips_module_reloc.patch b/target/linux/generic/patches-3.0/305-mips_module_reloc.patch
new file mode 100644 (file)
index 0000000..5513962
--- /dev/null
+++ b/target/linux/generic/patches-3.0/305-mips_module_reloc.patch
@@ -0,0 +1,370 @@
+--- a/arch/mips/Makefile
++++ b/arch/mips/Makefile
+@@ -90,8 +90,8 @@ all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlin
+ cflags-y                      += -G 0 -mno-abicalls -fno-pic -pipe
+ cflags-y                      += -msoft-float
+ LDFLAGS_vmlinux                       += -G 0 -static -n -nostdlib
+-KBUILD_AFLAGS_MODULE          += -mlong-calls
+-KBUILD_CFLAGS_MODULE          += -mlong-calls
++KBUILD_AFLAGS_MODULE          += -mno-long-calls
++KBUILD_CFLAGS_MODULE          += -mno-long-calls
+ 
+ cflags-y += -ffreestanding
+ 
+--- a/arch/mips/include/asm/module.h
++++ b/arch/mips/include/asm/module.h
+@@ -9,6 +9,11 @@ struct mod_arch_specific {
+       struct list_head dbe_list;
+       const struct exception_table_entry *dbe_start;
+       const struct exception_table_entry *dbe_end;
++
++      void *phys_plt_tbl;
++      void *virt_plt_tbl;
++      unsigned int phys_plt_offset;
++      unsigned int virt_plt_offset;
+ };
+ 
+ typedef uint8_t Elf64_Byte;           /* Type for a 8-bit quantity.  */
+--- a/arch/mips/kernel/module.c
++++ b/arch/mips/kernel/module.c
+@@ -45,6 +45,117 @@ static struct mips_hi16 *mips_hi16_list;
+ static LIST_HEAD(dbe_list);
+ static DEFINE_SPINLOCK(dbe_lock);
+ 
++/*
++ * Get the potential max trampolines size required of the init and
++ * non-init sections. Only used if we cannot find enough contiguous
++ * physically mapped memory to put the module into.
++ */
++static unsigned int
++get_plt_size(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs,
++             const char *secstrings, unsigned int symindex, bool is_init)
++{
++      unsigned long ret = 0;
++      unsigned int i, j;
++      Elf_Sym *syms;
++
++      /* Everything marked ALLOC (this includes the exported symbols) */
++      for (i = 1; i < hdr->e_shnum; ++i) {
++              unsigned int info = sechdrs[i].sh_info;
++
++              if (sechdrs[i].sh_type != SHT_REL
++                  && sechdrs[i].sh_type != SHT_RELA)
++                      continue;
++
++              /* Not a valid relocation section? */
++              if (info >= hdr->e_shnum)
++                      continue;
++
++              /* Don't bother with non-allocated sections */
++              if (!(sechdrs[info].sh_flags & SHF_ALLOC))
++                      continue;
++
++              /* If it's called *.init*, and we're not init, we're
++                   not interested */
++              if ((strstr(secstrings + sechdrs[i].sh_name, ".init") != 0)
++                  != is_init)
++                      continue;
++
++              syms = (Elf_Sym *) sechdrs[symindex].sh_addr;
++              if (sechdrs[i].sh_type == SHT_REL) {
++                      Elf_Mips_Rel *rel = (void *) sechdrs[i].sh_addr;
++                      unsigned int size = sechdrs[i].sh_size / sizeof(*rel);
++
++                      for (j = 0; j < size; ++j) {
++                              Elf_Sym *sym;
++
++                              if (ELF_MIPS_R_TYPE(rel[j]) != R_MIPS_26)
++                                      continue;
++
++                              sym = syms + ELF_MIPS_R_SYM(rel[j]);
++                              if (!is_init && sym->st_shndx != SHN_UNDEF)
++                                      continue;
++
++                              ret += 4 * sizeof(int);
++                      }
++              } else {
++                      Elf_Mips_Rela *rela = (void *) sechdrs[i].sh_addr;
++                      unsigned int size = sechdrs[i].sh_size / sizeof(*rela);
++
++                      for (j = 0; j < size; ++j) {
++                              Elf_Sym *sym;
++
++                              if (ELF_MIPS_R_TYPE(rela[j]) != R_MIPS_26)
++                                      continue;
++
++                              sym = syms + ELF_MIPS_R_SYM(rela[j]);
++                              if (!is_init && sym->st_shndx != SHN_UNDEF)
++                                      continue;
++
++                              ret += 4 * sizeof(int);
++                      }
++              }
++      }
++
++      return ret;
++}
++
++#ifndef MODULE_START
++static void *alloc_phys(unsigned long size)
++{
++      unsigned order;
++      struct page *page;
++      struct page *p;
++
++      size = PAGE_ALIGN(size);
++      order = get_order(size);
++
++      page = alloc_pages(GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN |
++                      __GFP_THISNODE, order);
++      if (!page)
++              return NULL;
++
++      split_page(page, order);
++
++      for (p = page + (size >> PAGE_SHIFT); p < page + (1 << order); ++p)
++              __free_page(p);
++
++      return page_address(page);
++}
++#endif
++
++static void free_phys(void *ptr, unsigned long size)
++{
++      struct page *page;
++      struct page *end;
++
++      page = virt_to_page(ptr);
++      end = page + (PAGE_ALIGN(size) >> PAGE_SHIFT);
++
++      for (; page < end; ++page)
++              __free_page(page);
++}
++
++
+ void *module_alloc(unsigned long size)
+ {
+ #ifdef MODULE_START
+@@ -52,21 +163,99 @@ void *module_alloc(unsigned long size)
+                               GFP_KERNEL, PAGE_KERNEL, -1,
+                               __builtin_return_address(0));
+ #else
++      void *ptr;
++
+       if (size == 0)
+               return NULL;
+-      return vmalloc(size);
++
++      ptr = alloc_phys(size);
++
++      /* If we failed to allocate physically contiguous memory,
++       * fall back to regular vmalloc. The module loader code will
++       * create jump tables to handle long jumps */
++      if (!ptr)
++              return vmalloc(size);
++
++      return ptr;
++#endif
++}
++
++static inline bool is_phys_addr(void *ptr)
++{
++#ifdef CONFIG_64BIT
++      return (KSEGX((unsigned long)ptr) == CKSEG0);
++#else
++      return (KSEGX(ptr) == KSEG0);
+ #endif
+ }
+ 
+ /* Free memory returned from module_alloc */
+ void module_free(struct module *mod, void *module_region)
+ {
+-      vfree(module_region);
++      if (is_phys_addr(module_region)) {
++              if (mod->module_init == module_region)
++                      free_phys(module_region, mod->init_size);
++              else if (mod->module_core == module_region)
++                      free_phys(module_region, mod->core_size);
++              else
++                      BUG();
++      } else {
++              vfree(module_region);
++      }
++}
++
++static void *__module_alloc(int size, bool phys)
++{
++      void *ptr;
++
++      if (phys)
++              ptr = kmalloc(size, GFP_KERNEL);
++      else
++              ptr = vmalloc(size);
++      return ptr;
++}
++
++static void __module_free(void *ptr)
++{
++      if (is_phys_addr(ptr))
++              kfree(ptr);
++      else
++              vfree(ptr);
+ }
+ 
+ int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
+                             char *secstrings, struct module *mod)
+ {
++      unsigned int symindex = 0;
++      unsigned int core_size, init_size;
++      int i;
++
++      for (i = 1; i < hdr->e_shnum; i++)
++              if (sechdrs[i].sh_type == SHT_SYMTAB)
++                      symindex = i;
++
++      core_size = get_plt_size(hdr, sechdrs, secstrings, symindex, false);
++      init_size = get_plt_size(hdr, sechdrs, secstrings, symindex, true);
++
++      mod->arch.phys_plt_offset = 0;
++      mod->arch.virt_plt_offset = 0;
++      mod->arch.phys_plt_tbl = NULL;
++      mod->arch.virt_plt_tbl = NULL;
++
++      if ((core_size + init_size) == 0)
++              return 0;
++
++      mod->arch.phys_plt_tbl = __module_alloc(core_size + init_size, 1);
++      if (!mod->arch.phys_plt_tbl)
++              return -ENOMEM;
++
++      mod->arch.virt_plt_tbl = __module_alloc(core_size + init_size, 0);
++      if (!mod->arch.virt_plt_tbl) {
++              __module_free(mod->arch.phys_plt_tbl);
++              mod->arch.phys_plt_tbl = NULL;
++              return -ENOMEM;
++      }
++
+       return 0;
+ }
+ 
+@@ -89,28 +278,36 @@ static int apply_r_mips_32_rela(struct m
+       return 0;
+ }
+ 
+-static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v)
++static Elf_Addr add_plt_entry_to(unsigned *plt_offset,
++                               void *start, Elf_Addr v)
+ {
+-      if (v % 4) {
+-              pr_err("module %s: dangerous R_MIPS_26 REL relocation\n",
+-                     me->name);
+-              return -ENOEXEC;
+-      }
++      unsigned *tramp = start + *plt_offset;
++      *plt_offset += 4 * sizeof(int);
+ 
+-      if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) {
+-              printk(KERN_ERR
+-                     "module %s: relocation overflow\n",
+-                     me->name);
+-              return -ENOEXEC;
+-      }
++      /* adjust carry for addiu */
++      if (v & 0x00008000)
++              v += 0x10000;
+ 
+-      *location = (*location & ~0x03ffffff) |
+-                  ((*location + (v >> 2)) & 0x03ffffff);
++      tramp[0] = 0x3c190000 | (v >> 16);      /* lui t9, hi16 */
++      tramp[1] = 0x27390000 | (v & 0xffff);   /* addiu t9, t9, lo16 */
++      tramp[2] = 0x03200008;                  /* jr t9 */
++      tramp[3] = 0x00000000;                  /* nop */
+ 
+-      return 0;
++      return (Elf_Addr) tramp;
+ }
+ 
+-static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr v)
++static Elf_Addr add_plt_entry(struct module *me, void *location, Elf_Addr v)
++{
++      if (is_phys_addr(location))
++              return add_plt_entry_to(&me->arch.phys_plt_offset,
++                              me->arch.phys_plt_tbl, v);
++      else
++              return add_plt_entry_to(&me->arch.virt_plt_offset,
++                              me->arch.virt_plt_tbl, v);
++
++}
++
++static int set_r_mips_26(struct module *me, u32 *location, u32 ofs, Elf_Addr v)
+ {
+       if (v % 4) {
+               pr_err("module %s: dangerous R_MIPS_26 RELArelocation\n",
+@@ -119,17 +316,31 @@ static int apply_r_mips_26_rela(struct m
+       }
+ 
+       if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) {
+-              printk(KERN_ERR
++          v = add_plt_entry(me, location, v + (ofs << 2));
++              if (!v) {
++                      printk(KERN_ERR
+                      "module %s: relocation overflow\n",
+                      me->name);
+-              return -ENOEXEC;
++                      return -ENOEXEC;
++              }
++              ofs = 0;
+       }
+ 
+-      *location = (*location & ~0x03ffffff) | ((v >> 2) & 0x03ffffff);
++      *location = (*location & ~0x03ffffff) | ((ofs + (v >> 2)) & 0x03ffffff);
+ 
+       return 0;
+ }
+ 
++static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v)
++{
++      return set_r_mips_26(me, location, *location & 0x03ffffff, v);
++}
++
++static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr v)
++{
++      return set_r_mips_26(me, location, 0, v);
++}
++
+ static int apply_r_mips_hi16_rel(struct module *me, u32 *location, Elf_Addr v)
+ {
+       struct mips_hi16 *n;
+@@ -397,11 +608,32 @@ int module_finalize(const Elf_Ehdr *hdr,
+               list_add(&me->arch.dbe_list, &dbe_list);
+               spin_unlock_irq(&dbe_lock);
+       }
++
++      /* Get rid of the fixup trampoline if we're running the module
++       * from physically mapped address space */
++      if (me->arch.phys_plt_offset == 0) {
++              __module_free(me->arch.phys_plt_tbl);
++              me->arch.phys_plt_tbl = NULL;
++      }
++      if (me->arch.virt_plt_offset == 0) {
++              __module_free(me->arch.virt_plt_tbl);
++              me->arch.virt_plt_tbl = NULL;
++      }
++
+       return 0;
+ }
+ 
+ void module_arch_cleanup(struct module *mod)
+ {
++      if (mod->arch.phys_plt_tbl) {
++              __module_free(mod->arch.phys_plt_tbl);
++              mod->arch.phys_plt_tbl = NULL;
++      }
++      if (mod->arch.virt_plt_tbl) {
++              __module_free(mod->arch.virt_plt_tbl);
++              mod->arch.virt_plt_tbl = NULL;
++      }
++
+       spin_lock_irq(&dbe_lock);
+       list_del(&mod->arch.dbe_list);
+       spin_unlock_irq(&dbe_lock);

diff --git a/target/linux/generic/patches-3.0/306-mips_mem_functions_performance.patch b/target/linux/generic/patches-3.0/306-mips_mem_functions_performance.patch
new file mode 100644 (file)
index 0000000..e432471
--- /dev/null
+++ b/target/linux/generic/patches-3.0/306-mips_mem_functions_performance.patch
@@ -0,0 +1,83 @@
+--- a/arch/mips/include/asm/string.h
++++ b/arch/mips/include/asm/string.h
+@@ -133,11 +133,44 @@ strncmp(__const__ char *__cs, __const__
+ 
+ #define __HAVE_ARCH_MEMSET
+ extern void *memset(void *__s, int __c, size_t __count);
++#define memset(__s, __c, len)                                 \
++({                                                            \
++      size_t __len = (len);                                   \
++      void *__ret;                                            \
++      if (__builtin_constant_p(len) && __len >= 64)           \
++              __ret = memset((__s), (__c), __len);            \
++      else                                                    \
++              __ret = __builtin_memset((__s), (__c), __len);  \
++      __ret;                                                  \
++})
+ 
+ #define __HAVE_ARCH_MEMCPY
+ extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
++#define memcpy(dst, src, len)                                 \
++({                                                            \
++      size_t __len = (len);                                   \
++      void *__ret;                                            \
++      if (__builtin_constant_p(len) && __len >= 64)           \
++              __ret = memcpy((dst), (src), __len);            \
++      else                                                    \
++              __ret = __builtin_memcpy((dst), (src), __len);  \
++      __ret;                                                  \
++})
+ 
+ #define __HAVE_ARCH_MEMMOVE
+ extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
++#define memmove(dst, src, len)                                        \
++({                                                            \
++      size_t __len = (len);                                   \
++      void *__ret;                                            \
++      if (__builtin_constant_p(len) && __len >= 64)           \
++              __ret = memmove((dst), (src), __len);           \
++      else                                                    \
++              __ret = __builtin_memmove((dst), (src), __len); \
++      __ret;                                                  \
++})
++
++#define __HAVE_ARCH_MEMCMP
++#define memcmp(src1, src2, len) __builtin_memcmp((src1), (src2), (len))
+ 
+ #endif /* _ASM_STRING_H */
+--- a/arch/mips/lib/Makefile
++++ b/arch/mips/lib/Makefile
+@@ -3,7 +3,7 @@
+ #
+ 
+ lib-y += csum_partial.o delay.o memcpy.o memcpy-inatomic.o memset.o \
+-         strlen_user.o strncpy_user.o strnlen_user.o uncached.o
++         strlen_user.o strncpy_user.o strnlen_user.o uncached.o memcmp.o
+ 
+ obj-y                 += iomap.o
+ obj-$(CONFIG_PCI)     += iomap-pci.o
+--- /dev/null
++++ b/arch/mips/lib/memcmp.c
+@@ -0,0 +1,22 @@
++/*
++ *  copied from linux/lib/string.c
++ *
++ *  Copyright (C) 1991, 1992  Linus Torvalds
++ */
++
++#include <linux/module.h>
++#include <linux/string.h>
++
++#undef memcmp
++int memcmp(const void *cs, const void *ct, size_t count)
++{
++      const unsigned char *su1, *su2;
++      int res = 0;
++
++      for (su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
++              if ((res = *su1 - *su2) != 0)
++                      break;
++      return res;
++}
++EXPORT_SYMBOL(memcmp);
++

diff --git a/target/linux/generic/patches-3.0/307-mips_oprofile_fix.patch b/target/linux/generic/patches-3.0/307-mips_oprofile_fix.patch
new file mode 100644 (file)
index 0000000..f83c96b
--- /dev/null
+++ b/target/linux/generic/patches-3.0/307-mips_oprofile_fix.patch
@@ -0,0 +1,35 @@
+--- a/arch/mips/oprofile/op_model_mipsxx.c
++++ b/arch/mips/oprofile/op_model_mipsxx.c
+@@ -298,6 +298,11 @@ static void reset_counters(void *arg)
+       }
+ }
+ 
++static irqreturn_t mipsxx_perfcount_int(int irq, void *dev_id)
++{
++      return mipsxx_perfcount_handler();
++}
++
+ static int __init mipsxx_init(void)
+ {
+       int counters;
+@@ -374,6 +379,10 @@ static int __init mipsxx_init(void)
+       save_perf_irq = perf_irq;
+       perf_irq = mipsxx_perfcount_handler;
+ 
++      if (cp0_perfcount_irq >= 0)
++              return request_irq(cp0_perfcount_irq, mipsxx_perfcount_int,
++                      IRQF_SHARED, "Perfcounter", save_perf_irq);
++
+       return 0;
+ }
+ 
+@@ -381,6 +390,9 @@ static void mipsxx_exit(void)
+ {
+       int counters = op_model_mipsxx_ops.num_counters;
+ 
++      if (cp0_perfcount_irq >= 0)
++              free_irq(cp0_perfcount_irq, save_perf_irq);
++
+       counters = counters_per_cpu_to_total(counters);
+       on_each_cpu(reset_counters, (void *)(long)counters, 1);
+ 

diff --git a/target/linux/generic/patches-3.0/310-arm_module_unresolved_weak_sym.patch b/target/linux/generic/patches-3.0/310-arm_module_unresolved_weak_sym.patch
new file mode 100644 (file)
index 0000000..c63ff67
--- /dev/null
+++ b/target/linux/generic/patches-3.0/310-arm_module_unresolved_weak_sym.patch
@@ -0,0 +1,13 @@
+--- a/arch/arm/kernel/module.c
++++ b/arch/arm/kernel/module.c
+@@ -99,6 +99,10 @@ apply_relocate(Elf32_Shdr *sechdrs, cons
+                       return -ENOEXEC;
+               }
+ 
++              if ((IS_ERR_VALUE(sym->st_value) || !sym->st_value) &&
++                  ELF_ST_BIND(sym->st_info) == STB_WEAK)
++                      continue;
++
+               loc = dstsec->sh_addr + rel->r_offset;
+ 
+               switch (ELF32_R_TYPE(rel->r_info)) {

diff --git a/target/linux/generic/patches-3.0/320-ppc4xx_optimization.patch b/target/linux/generic/patches-3.0/320-ppc4xx_optimization.patch
new file mode 100644 (file)
index 0000000..49d3659
--- /dev/null
+++ b/target/linux/generic/patches-3.0/320-ppc4xx_optimization.patch
@@ -0,0 +1,31 @@
+Upstream doesn't optimize the kernel and bootwrappers for ppc44x because
+they still want to support gcc 3.3 -- well, we don't.
+
+--- a/arch/powerpc/Makefile
++++ b/arch/powerpc/Makefile
+@@ -130,7 +130,8 @@ ifeq ($(CONFIG_FUNCTION_TRACER),y)
+ KBUILD_CFLAGS         += -mno-sched-epilog
+ endif
+ 
+-cpu-as-$(CONFIG_4xx)          += -Wa,-m405
++cpu-as-$(CONFIG_40x)          += -Wa,-m405
++cpu-as-$(CONFIG_44x)          += -Wa,-m440
+ cpu-as-$(CONFIG_6xx)          += -Wa,-maltivec
+ cpu-as-$(CONFIG_POWER4)               += -Wa,-maltivec
+ cpu-as-$(CONFIG_E500)         += -Wa,-me500
+--- a/arch/powerpc/boot/Makefile
++++ b/arch/powerpc/boot/Makefile
+@@ -38,10 +38,10 @@ BOOTCFLAGS += -I$(obj) -I$(srctree)/$(ob
+ DTC_FLAGS     ?= -p 1024
+ 
+ $(obj)/4xx.o: BOOTCFLAGS += -mcpu=405
+-$(obj)/ebony.o: BOOTCFLAGS += -mcpu=405
++$(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
+ $(obj)/cuboot-hotfoot.o: BOOTCFLAGS += -mcpu=405
+-$(obj)/cuboot-taishan.o: BOOTCFLAGS += -mcpu=405
+-$(obj)/cuboot-katmai.o: BOOTCFLAGS += -mcpu=405
++$(obj)/cuboot-taishan.o: BOOTCFLAGS += -mcpu=440
++$(obj)/cuboot-katmai.o: BOOTCFLAGS += -mcpu=440
+ $(obj)/cuboot-acadia.o: BOOTCFLAGS += -mcpu=405
+ $(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405
+ $(obj)/treeboot-iss4xx.o: BOOTCFLAGS += -mcpu=405

diff --git a/target/linux/generic/patches-3.0/321-powerpc_crtsavres_prereq.patch b/target/linux/generic/patches-3.0/321-powerpc_crtsavres_prereq.patch
new file mode 100644 (file)
index 0000000..e5d383c
--- /dev/null
+++ b/target/linux/generic/patches-3.0/321-powerpc_crtsavres_prereq.patch
@@ -0,0 +1,56 @@
+--- a/Makefile
++++ b/Makefile
+@@ -375,6 +375,7 @@ KBUILD_AFLAGS   := -D__ASSEMBLY__
+ KBUILD_AFLAGS_MODULE  := -DMODULE
+ KBUILD_CFLAGS_MODULE  := -DMODULE
+ KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
++KBUILD_LDFLAGS_MODULE_PREREQ  := 
+ 
+ # Read KERNELRELEASE from include/config/kernel.release (if it exists)
+ KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
+@@ -384,7 +385,7 @@ export VERSION PATCHLEVEL SUBLEVEL KERNE
+ export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
+ export CPP AR NM STRIP OBJCOPY OBJDUMP
+ export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE
+-export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
++export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE KBUILD_LDFLAGS_MODULE_PREREQ CHECK CHECKFLAGS
+ 
+ export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
+ export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
+--- a/arch/powerpc/Makefile
++++ b/arch/powerpc/Makefile
+@@ -94,7 +94,7 @@ else
+ endif
+ endif
+ 
+-KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
++KBUILD_LDFLAGS_MODULE_PREREQ += arch/powerpc/lib/crtsavres.o
+ 
+ ifeq ($(CONFIG_TUNE_CELL),y)
+       KBUILD_CFLAGS += $(call cc-option,-mtune=cell)
+--- a/scripts/Makefile.modpost
++++ b/scripts/Makefile.modpost
+@@ -110,7 +110,14 @@ quiet_cmd_cc_o_c = CC      $@
+       cmd_cc_o_c = $(CC) $(c_flags) $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE) \
+                  -c -o $@ $<
+ 
+-$(modules:.ko=.mod.o): %.mod.o: %.mod.c FORCE
++quiet_cmd_as_o_S      = AS $(quiet_modtag)  $@
++cmd_as_o_S            = $(CC) $(a_flags) $(AFLAGS_MODULE) -c -o $@ $<
++
++$(KBUILD_LDFLAGS_MODULE_PREREQ): %.o: %.S FORCE
++      $(Q)mkdir -p $(dir $@)
++      $(call if_changed_dep,as_o_S)
++
++$(modules:.ko=.mod.o): %.mod.o: %.mod.c $(KBUILD_LDFLAGS_MODULE_PREREQ) FORCE
+       $(call if_changed_dep,cc_o_c)
+ 
+ targets += $(modules:.ko=.mod.o)
+@@ -119,6 +126,7 @@ targets += $(modules:.ko=.mod.o)
+ quiet_cmd_ld_ko_o = LD [M]  $@
+       cmd_ld_ko_o = $(LD) -r $(LDFLAGS)                                 \
+                              $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \
++                           $(KBUILD_LDFLAGS_MODULE_PREREQ)            \
+                              -o $@ $(filter-out FORCE,$^)
+ 
+ $(modules): %.ko :%.o %.mod.o FORCE

diff --git a/target/linux/generic/patches-3.0/400-rootfs_split.patch b/target/linux/generic/patches-3.0/400-rootfs_split.patch
new file mode 100644 (file)
index 0000000..d623bfd
--- /dev/null
+++ b/target/linux/generic/patches-3.0/400-rootfs_split.patch
@@ -0,0 +1,316 @@
+--- a/drivers/mtd/Kconfig
++++ b/drivers/mtd/Kconfig
+@@ -33,6 +33,14 @@ config MTD_TESTS
+         should normally be compiled as kernel modules. The modules perform
+         various checks and verifications when loaded.
+ 
++config MTD_ROOTFS_ROOT_DEV
++      bool "Automatically set 'rootfs' partition to be root filesystem"
++      default y
++
++config MTD_ROOTFS_SPLIT
++      bool "Automatically split 'rootfs' partition for squashfs"
++      default y
++
+ config MTD_REDBOOT_PARTS
+       tristate "RedBoot partition table parsing"
+       ---help---
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -29,6 +29,8 @@
+ #include <linux/kmod.h>
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
++#include <linux/root_dev.h>
++#include <linux/magic.h>
+ #include <linux/err.h>
+ 
+ #include "mtdcore.h"
+@@ -50,7 +52,7 @@ struct mtd_part {
+  * the pointer to that structure with this macro.
+  */
+ #define PART(x)  ((struct mtd_part *)(x))
+-
++#define IS_PART(mtd) (mtd->read == part_read)
+ 
+ /*
+  * MTD methods which simply translate the effective address and pass through
+@@ -637,6 +639,155 @@ int mtd_del_partition(struct mtd_info *m
+ }
+ EXPORT_SYMBOL_GPL(mtd_del_partition);
+ 
++#ifdef CONFIG_MTD_ROOTFS_SPLIT
++#define ROOTFS_SPLIT_NAME "rootfs_data"
++#define ROOTFS_REMOVED_NAME "<removed>"
++
++struct squashfs_super_block {
++      __le32 s_magic;
++      __le32 pad0[9];
++      __le64 bytes_used;
++};
++
++
++static int split_squashfs(struct mtd_info *master, int offset, int *split_offset)
++{
++      struct squashfs_super_block sb;
++      int len, ret;
++
++      ret = master->read(master, offset, sizeof(sb), &len, (void *) &sb);
++      if (ret || (len != sizeof(sb))) {
++              printk(KERN_ALERT "split_squashfs: error occured while reading "
++                      "from \"%s\"\n", master->name);
++              return -EINVAL;
++      }
++
++      if (SQUASHFS_MAGIC != le32_to_cpu(sb.s_magic) ) {
++              printk(KERN_ALERT "split_squashfs: no squashfs found in \"%s\"\n",
++                      master->name);
++              *split_offset = 0;
++              return 0;
++      }
++
++      if (le64_to_cpu((sb.bytes_used)) <= 0) {
++              printk(KERN_ALERT "split_squashfs: squashfs is empty in \"%s\"\n",
++                      master->name);
++              *split_offset = 0;
++              return 0;
++      }
++
++      len = (u32) le64_to_cpu(sb.bytes_used);
++      len += (offset & 0x000fffff);
++      len +=  (master->erasesize - 1);
++      len &= ~(master->erasesize - 1);
++      len -= (offset & 0x000fffff);
++      *split_offset = offset + len;
++
++      return 0;
++}
++
++static int split_rootfs_data(struct mtd_info *master, struct mtd_info *rpart, const struct mtd_partition *part)
++{
++      struct mtd_partition *dpart;
++      struct mtd_part *slave = NULL;
++      struct mtd_part *spart;
++      int ret, split_offset = 0;
++
++      spart = PART(rpart);
++      ret = split_squashfs(master, spart->offset, &split_offset);
++      if (ret)
++              return ret;
++
++      if (split_offset <= 0)
++              return 0;
++
++      dpart = kmalloc(sizeof(*part)+sizeof(ROOTFS_SPLIT_NAME)+1, GFP_KERNEL);
++      if (dpart == NULL) {
++              printk(KERN_INFO "split_squashfs: no memory for partition \"%s\"\n",
++                      ROOTFS_SPLIT_NAME);
++              return -ENOMEM;
++      }
++
++      memcpy(dpart, part, sizeof(*part));
++      dpart->name = (unsigned char *)&dpart[1];
++      strcpy(dpart->name, ROOTFS_SPLIT_NAME);
++
++      dpart->size = rpart->size - (split_offset - spart->offset);
++      dpart->offset = split_offset;
++
++      if (dpart == NULL)
++              return 1;
++
++      printk(KERN_INFO "mtd: partition \"%s\" created automatically, ofs=%llX, len=%llX \n",
++              ROOTFS_SPLIT_NAME, dpart->offset, dpart->size);
++
++      slave = allocate_partition(master, dpart, 0, split_offset);
++      if (IS_ERR(slave))
++              return PTR_ERR(slave);
++      mutex_lock(&mtd_partitions_mutex);
++      list_add(&slave->list, &mtd_partitions);
++      mutex_unlock(&mtd_partitions_mutex);
++
++      add_mtd_device(&slave->mtd);
++
++      rpart->split = &slave->mtd;
++
++      return 0;
++}
++
++static int refresh_rootfs_split(struct mtd_info *mtd)
++{
++      struct mtd_partition tpart;
++      struct mtd_part *part;
++      char *name;
++      //int index = 0;
++      int offset, size;
++      int ret;
++
++      part = PART(mtd);
++
++      /* check for the new squashfs offset first */
++      ret = split_squashfs(part->master, part->offset, &offset);
++      if (ret)
++              return ret;
++
++      if ((offset > 0) && !mtd->split) {
++              printk(KERN_INFO "%s: creating new split partition for \"%s\"\n", __func__, mtd->name);
++              /* if we don't have a rootfs split partition, create a new one */
++              tpart.name = (char *) mtd->name;
++              tpart.size = mtd->size;
++              tpart.offset = part->offset;
++
++              return split_rootfs_data(part->master, &part->mtd, &tpart);
++      } else if ((offset > 0) && mtd->split) {
++              /* update the offsets of the existing partition */
++              size = mtd->size + part->offset - offset;
++
++              part = PART(mtd->split);
++              part->offset = offset;
++              part->mtd.size = size;
++              printk(KERN_INFO "%s: %s partition \"" ROOTFS_SPLIT_NAME "\", offset: 0x%06x (0x%06x)\n",
++                      __func__, (!strcmp(part->mtd.name, ROOTFS_SPLIT_NAME) ? "updating" : "creating"),
++                      (u32) part->offset, (u32) part->mtd.size);
++              name = kmalloc(sizeof(ROOTFS_SPLIT_NAME) + 1, GFP_KERNEL);
++              strcpy(name, ROOTFS_SPLIT_NAME);
++              part->mtd.name = name;
++      } else if ((offset <= 0) && mtd->split) {
++              printk(KERN_INFO "%s: removing partition \"%s\"\n", __func__, mtd->split->name);
++
++              /* mark existing partition as removed */
++              part = PART(mtd->split);
++              name = kmalloc(sizeof(ROOTFS_SPLIT_NAME) + 1, GFP_KERNEL);
++              strcpy(name, ROOTFS_REMOVED_NAME);
++              part->mtd.name = name;
++              part->offset = 0;
++              part->mtd.size = 0;
++      }
++
++      return 0;
++}
++#endif /* CONFIG_MTD_ROOTFS_SPLIT */
++
+ /*
+  * This function, given a master MTD object and a partition table, creates
+  * and registers slave MTD objects which are bound to the master according to
+@@ -653,6 +804,9 @@ int add_mtd_partitions(struct mtd_info *
+       struct mtd_part *slave;
+       uint64_t cur_offset = 0;
+       int i;
++#ifdef CONFIG_MTD_ROOTFS_SPLIT
++      int ret;
++#endif
+ 
+       printk(KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name);
+ 
+@@ -667,12 +821,53 @@ int add_mtd_partitions(struct mtd_info *
+ 
+               add_mtd_device(&slave->mtd);
+ 
++              if (!strcmp(parts[i].name, "rootfs")) {
++#ifdef CONFIG_MTD_ROOTFS_ROOT_DEV
++                      if (ROOT_DEV == 0) {
++                              printk(KERN_NOTICE "mtd: partition \"rootfs\" "
++                                      "set to be root filesystem\n");
++                              ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, slave->mtd.index);
++                      }
++#endif
++#ifdef CONFIG_MTD_ROOTFS_SPLIT
++                      ret = split_rootfs_data(master, &slave->mtd, &parts[i]);
++                      /* if (ret == 0)
++                       *      j++; */
++#endif
++              }
++
+               cur_offset = slave->offset + slave->mtd.size;
+       }
+ 
+       return 0;
+ }
+ 
++int mtd_device_refresh(struct mtd_info *mtd)
++{
++      int ret = 0;
++
++      if (IS_PART(mtd)) {
++              struct mtd_part *part;
++              struct mtd_info *master;
++
++              part = PART(mtd);
++              master = part->master;
++              if (master->refresh_device)
++                      ret = master->refresh_device(master);
++      }
++
++      if (!ret && mtd->refresh_device)
++              ret = mtd->refresh_device(mtd);
++
++#ifdef CONFIG_MTD_ROOTFS_SPLIT
++      if (!ret && IS_PART(mtd) && !strcmp(mtd->name, "rootfs"))
++              refresh_rootfs_split(mtd);
++#endif
++
++      return 0;
++}
++EXPORT_SYMBOL_GPL(mtd_device_refresh);
++
+ static DEFINE_SPINLOCK(part_parser_lock);
+ static LIST_HEAD(part_parsers);
+ 
+--- a/drivers/mtd/mtdchar.c
++++ b/drivers/mtd/mtdchar.c
+@@ -834,6 +834,11 @@ static int mtd_ioctl(struct file *file,
+               file->f_pos = 0;
+               break;
+       }
++      case MTDREFRESH:
++      {
++              ret = mtd_device_refresh(mtd);
++              break;
++      }
+ 
+       case OTPGETREGIONCOUNT:
+       case OTPGETREGIONINFO:
+--- a/include/linux/mtd/mtd.h
++++ b/include/linux/mtd/mtd.h
+@@ -125,6 +125,7 @@ struct nand_ecclayout {
+       struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES_LARGE];
+ };
+ 
++struct mtd_info;
+ struct mtd_info {
+       u_char type;
+       uint32_t flags;
+@@ -277,6 +278,9 @@ struct mtd_info {
+       struct device dev;
+       int usecount;
+ 
++      int (*refresh_device)(struct mtd_info *mtd);
++      struct mtd_info *split;
++
+       /* If the driver is something smart, like UBI, it may need to maintain
+        * its own reference counting. The below functions are only for driver.
+        * The driver may register its callbacks. These callbacks are not
+@@ -327,6 +331,7 @@ struct mtd_partition;
+ extern int mtd_device_register(struct mtd_info *master,
+                              const struct mtd_partition *parts,
+                              int nr_parts);
++extern int mtd_device_refresh(struct mtd_info *master);
+ extern int mtd_device_unregister(struct mtd_info *master);
+ extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num);
+ extern int __get_mtd_device(struct mtd_info *mtd);
+--- a/include/linux/mtd/partitions.h
++++ b/include/linux/mtd/partitions.h
+@@ -34,12 +34,14 @@
+  * erasesize aligned (e.g. use MTDPART_OFS_NEXTBLK).
+  */
+ 
++struct mtd_partition;
+ struct mtd_partition {
+       char *name;                     /* identifier string */
+       uint64_t size;                  /* partition size */
+       uint64_t offset;                /* offset within the master MTD space */
+       uint32_t mask_flags;            /* master MTD flags to mask out for this partition */
+       struct nand_ecclayout *ecclayout;       /* out of band layout for this partition (NAND only) */
++      int (*refresh_partition)(struct mtd_info *);
+ };
+ 
+ #define MTDPART_OFS_NXTBLK    (-2)

diff --git a/target/linux/generic/patches-3.0/401-partial_eraseblock_write.patch b/target/linux/generic/patches-3.0/401-partial_eraseblock_write.patch
new file mode 100644 (file)
index 0000000..77b5009
--- /dev/null
+++ b/target/linux/generic/patches-3.0/401-partial_eraseblock_write.patch
@@ -0,0 +1,145 @@
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -35,6 +35,8 @@
+ 
+ #include "mtdcore.h"
+ 
++#define MTD_ERASE_PARTIAL     0x8000 /* partition only covers parts of an erase block */
++
+ /* Our partition linked list */
+ static LIST_HEAD(mtd_partitions);
+ static DEFINE_MUTEX(mtd_partitions_mutex);
+@@ -258,13 +260,60 @@ static int part_erase(struct mtd_info *m
+               return -EROFS;
+       if (instr->addr >= mtd->size)
+               return -EINVAL;
++
++      instr->partial_start = false;
++      if (mtd->flags & MTD_ERASE_PARTIAL) {
++              size_t readlen = 0;
++              u64 mtd_ofs;
++
++              instr->erase_buf = kmalloc(part->master->erasesize, GFP_ATOMIC);
++              if (!instr->erase_buf)
++                      return -ENOMEM;
++
++              mtd_ofs = part->offset + instr->addr;
++              instr->erase_buf_ofs = do_div(mtd_ofs, part->master->erasesize);
++
++              if (instr->erase_buf_ofs > 0) {
++                      instr->addr -= instr->erase_buf_ofs;
++                      ret = part->master->read(part->master,
++                              instr->addr + part->offset,
++                              part->master->erasesize,
++                              &readlen, instr->erase_buf);
++
++                      instr->partial_start = true;
++              } else {
++                      mtd_ofs = part->offset + part->mtd.size;
++                      instr->erase_buf_ofs = part->master->erasesize -
++                              do_div(mtd_ofs, part->master->erasesize);
++
++                      if (instr->erase_buf_ofs > 0) {
++                              instr->len += instr->erase_buf_ofs;
++                              ret = part->master->read(part->master,
++                                      part->offset + instr->addr +
++                                      instr->len - part->master->erasesize,
++                                      part->master->erasesize, &readlen,
++                                      instr->erase_buf);
++                      } else {
++                              ret = 0;
++                      }
++              }
++              if (ret < 0) {
++                      kfree(instr->erase_buf);
++                      return ret;
++              }
++
++      }
++
+       instr->addr += part->offset;
+       ret = part->master->erase(part->master, instr);
+       if (ret) {
+               if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
+                       instr->fail_addr -= part->offset;
+               instr->addr -= part->offset;
++              if (mtd->flags & MTD_ERASE_PARTIAL)
++                      kfree(instr->erase_buf);
+       }
++
+       return ret;
+ }
+ 
+@@ -272,7 +321,25 @@ void mtd_erase_callback(struct erase_inf
+ {
+       if (instr->mtd->erase == part_erase) {
+               struct mtd_part *part = PART(instr->mtd);
++              size_t wrlen = 0;
+ 
++              if (instr->mtd->flags & MTD_ERASE_PARTIAL) {
++                      if (instr->partial_start) {
++                              part->master->write(part->master,
++                                      instr->addr, instr->erase_buf_ofs,
++                                      &wrlen, instr->erase_buf);
++                              instr->addr += instr->erase_buf_ofs;
++                      } else {
++                              instr->len -= instr->erase_buf_ofs;
++                              part->master->write(part->master,
++                                      instr->addr + instr->len,
++                                      instr->erase_buf_ofs, &wrlen,
++                                      instr->erase_buf +
++                                      part->master->erasesize -
++                                      instr->erase_buf_ofs);
++                      }
++                      kfree(instr->erase_buf);
++              }
+               if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
+                       instr->fail_addr -= part->offset;
+               instr->addr -= part->offset;
+@@ -530,18 +597,24 @@ static struct mtd_part *allocate_partiti
+       if ((slave->mtd.flags & MTD_WRITEABLE) &&
+           mtd_mod_by_eb(slave->offset, &slave->mtd)) {
+               /* Doesn't start on a boundary of major erase size */
+-              /* FIXME: Let it be writable if it is on a boundary of
+-               * _minor_ erase size though */
+-              slave->mtd.flags &= ~MTD_WRITEABLE;
+-              printk(KERN_WARNING"mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n",
+-                      part->name);
++              slave->mtd.flags |= MTD_ERASE_PARTIAL;
++              if (((u32) slave->mtd.size) > master->erasesize)
++                      slave->mtd.flags &= ~MTD_WRITEABLE;
++              else
++                      slave->mtd.erasesize = slave->mtd.size;
+       }
+       if ((slave->mtd.flags & MTD_WRITEABLE) &&
+-          mtd_mod_by_eb(slave->mtd.size, &slave->mtd)) {
+-              slave->mtd.flags &= ~MTD_WRITEABLE;
+-              printk(KERN_WARNING"mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n",
+-                      part->name);
++          mtd_mod_by_eb(slave->offset + slave->mtd.size, &slave->mtd)) {
++              slave->mtd.flags |= MTD_ERASE_PARTIAL;
++
++              if ((u32) slave->mtd.size > master->erasesize)
++                      slave->mtd.flags &= ~MTD_WRITEABLE;
++              else
++                      slave->mtd.erasesize = slave->mtd.size;
+       }
++      if ((slave->mtd.flags & (MTD_ERASE_PARTIAL|MTD_WRITEABLE)) == MTD_ERASE_PARTIAL)
++              printk(KERN_WARNING"mtd: partition \"%s\" must either start or end on erase block boundary or be smaller than an erase block -- forcing read-only\n",
++                              part->name);
+ 
+       slave->mtd.ecclayout = master->ecclayout;
+       if (master->block_isbad) {
+--- a/include/linux/mtd/mtd.h
++++ b/include/linux/mtd/mtd.h
+@@ -57,6 +57,10 @@ struct erase_info {
+       u_long priv;
+       u_char state;
+       struct erase_info *next;
++
++      u8 *erase_buf;
++      u32 erase_buf_ofs;
++      bool partial_start;
+ };
+ 
+ struct mtd_erase_region_info {

diff --git a/target/linux/generic/patches-3.0/410-mtd_info_move_forward_decl.patch b/target/linux/generic/patches-3.0/410-mtd_info_move_forward_decl.patch
new file mode 100644 (file)
index 0000000..45bac2c
--- /dev/null
+++ b/target/linux/generic/patches-3.0/410-mtd_info_move_forward_decl.patch
@@ -0,0 +1,18 @@
+--- a/include/linux/mtd/partitions.h
++++ b/include/linux/mtd/partitions.h
+@@ -33,6 +33,7 @@
+  * Note: writeable partitions require their size and offset be
+  * erasesize aligned (e.g. use MTDPART_OFS_NEXTBLK).
+  */
++struct mtd_info;
+ 
+ struct mtd_partition;
+ struct mtd_partition {
+@@ -49,7 +50,6 @@ struct mtd_partition {
+ #define MTDPART_SIZ_FULL      (0)
+ 
+ 
+-struct mtd_info;
+ 
+ /*
+  * Functions dealing with the various ways of partitioning the space

diff --git a/target/linux/generic/patches-3.0/420-redboot_space.patch b/target/linux/generic/patches-3.0/420-redboot_space.patch
new file mode 100644 (file)
index 0000000..fb6700b
--- /dev/null
+++ b/target/linux/generic/patches-3.0/420-redboot_space.patch
@@ -0,0 +1,30 @@
+--- a/drivers/mtd/redboot.c
++++ b/drivers/mtd/redboot.c
+@@ -267,14 +267,21 @@ static int parse_redboot_partitions(stru
+ #endif
+               names += strlen(names)+1;
+ 
+-#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
+               if(fl->next && fl->img->flash_base + fl->img->size + master->erasesize <= fl->next->img->flash_base) {
+-                      i++;
+-                      parts[i].offset = parts[i-1].size + parts[i-1].offset;
+-                      parts[i].size = fl->next->img->flash_base - parts[i].offset;
+-                      parts[i].name = nullname;
+-              }
++                      if (!strcmp(parts[i].name, "rootfs")) {
++                              parts[i].size = fl->next->img->flash_base;
++                              parts[i].size &= ~(master->erasesize - 1);
++                              parts[i].size -= parts[i].offset;
++#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
++                              nrparts--;
++                      } else {
++                              i++;
++                              parts[i].offset = parts[i-1].size + parts[i-1].offset;
++                              parts[i].size = fl->next->img->flash_base - parts[i].offset;
++                              parts[i].name = nullname;
+ #endif
++                      }
++              }
+               tmp_fl = fl;
+               fl = fl->next;
+               kfree(tmp_fl);

diff --git a/target/linux/generic/patches-3.0/421-redboot_boardconfig.patch b/target/linux/generic/patches-3.0/421-redboot_boardconfig.patch
new file mode 100644 (file)
index 0000000..9188cee
--- /dev/null
+++ b/target/linux/generic/patches-3.0/421-redboot_boardconfig.patch
@@ -0,0 +1,60 @@
+--- a/drivers/mtd/redboot.c
++++ b/drivers/mtd/redboot.c
+@@ -29,6 +29,8 @@
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
+ 
++#define BOARD_CONFIG_PART             "boardconfig"
++
+ struct fis_image_desc {
+     unsigned char name[16];      // Null terminated name
+     uint32_t    flash_base;    // Address within FLASH of image
+@@ -59,6 +61,7 @@ static int parse_redboot_partitions(stru
+                              struct mtd_partition **pparts,
+                              unsigned long fis_origin)
+ {
++      unsigned long max_offset = 0;
+       int nrparts = 0;
+       struct fis_image_desc *buf;
+       struct mtd_partition *parts;
+@@ -227,14 +230,14 @@ static int parse_redboot_partitions(stru
+               }
+       }
+ #endif
+-      parts = kzalloc(sizeof(*parts)*nrparts + nulllen + namelen, GFP_KERNEL);
++      parts = kzalloc(sizeof(*parts) * (nrparts + 1) + nulllen + namelen + sizeof(BOARD_CONFIG_PART), GFP_KERNEL);
+ 
+       if (!parts) {
+               ret = -ENOMEM;
+               goto out;
+       }
+ 
+-      nullname = (char *)&parts[nrparts];
++      nullname = (char *)&parts[nrparts + 1];
+ #ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
+       if (nulllen > 0) {
+               strcpy(nullname, nullstring);
+@@ -253,6 +256,8 @@ static int parse_redboot_partitions(stru
+       }
+ #endif
+       for ( ; i<nrparts; i++) {
++              if(max_offset < buf[i].flash_base + buf[i].size)
++                      max_offset = buf[i].flash_base + buf[i].size;
+               parts[i].size = fl->img->size;
+               parts[i].offset = fl->img->flash_base;
+               parts[i].name = names;
+@@ -286,6 +291,14 @@ static int parse_redboot_partitions(stru
+               fl = fl->next;
+               kfree(tmp_fl);
+       }
++      if(master->size - max_offset >= master->erasesize)
++      {
++              parts[nrparts].size = master->size - max_offset;
++              parts[nrparts].offset = max_offset;
++              parts[nrparts].name = names;
++              strcpy(names, BOARD_CONFIG_PART);
++              nrparts++;
++      }
+       ret = nrparts;
+       *pparts = parts;
+  out:

diff --git a/target/linux/generic/patches-3.0/430-mtd_myloader_partition_parser.patch b/target/linux/generic/patches-3.0/430-mtd_myloader_partition_parser.patch
new file mode 100644 (file)
index 0000000..785b3e7
--- /dev/null
+++ b/target/linux/generic/patches-3.0/430-mtd_myloader_partition_parser.patch
@@ -0,0 +1,35 @@
+--- a/drivers/mtd/Kconfig
++++ b/drivers/mtd/Kconfig
+@@ -157,6 +157,22 @@ config MTD_AR7_PARTS
+       ---help---
+         TI AR7 partitioning support
+ 
++config MTD_MYLOADER_PARTS
++      tristate "MyLoader partition parsing"
++      depends on MTD_PARTITIONS && (ADM5120 || ATHEROS_AR231X || ATHEROS_AR71XX)
++      ---help---
++        MyLoader is a bootloader which allows the user to define partitions
++        in flash devices, by putting a table in the second erase block
++        on the device, similar to a partition table. This table gives the 
++        offsets and lengths of the user defined partitions.
++
++        If you need code which can detect and parse these tables, and
++        register MTD 'partitions' corresponding to each image detected,
++        enable this option.
++
++        You will still need the parsing functions to be called by the driver
++        for your particular device. It won't happen automatically.
++
+ comment "User Modules And Translation Layers"
+ 
+ config MTD_CHAR
+--- a/drivers/mtd/Makefile
++++ b/drivers/mtd/Makefile
+@@ -11,6 +11,7 @@ obj-$(CONFIG_MTD_REDBOOT_PARTS) += redbo
+ obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdlinepart.o
+ obj-$(CONFIG_MTD_AFS_PARTS)   += afs.o
+ obj-$(CONFIG_MTD_AR7_PARTS)   += ar7part.o
++obj-$(CONFIG_MTD_MYLOADER_PARTS) += myloader.o
+ 
+ # 'Users' - code which presents functionality to userspace.
+ obj-$(CONFIG_MTD_CHAR)                += mtdchar.o

diff --git a/target/linux/generic/patches-3.0/440-block2mtd_init.patch b/target/linux/generic/patches-3.0/440-block2mtd_init.patch
new file mode 100644 (file)
index 0000000..53979b2
--- /dev/null
+++ b/target/linux/generic/patches-3.0/440-block2mtd_init.patch
@@ -0,0 +1,116 @@
+--- a/drivers/mtd/devices/block2mtd.c
++++ b/drivers/mtd/devices/block2mtd.c
+@@ -14,6 +14,7 @@
+ #include <linux/list.h>
+ #include <linux/init.h>
+ #include <linux/mtd/mtd.h>
++#include <linux/mtd/partitions.h>
+ #include <linux/buffer_head.h>
+ #include <linux/mutex.h>
+ #include <linux/mount.h>
+@@ -232,11 +233,12 @@ static void block2mtd_free_device(struct
+ 
+ 
+ /* FIXME: ensure that mtd->size % erase_size == 0 */
+-static struct block2mtd_dev *add_device(char *devname, int erase_size)
++static struct block2mtd_dev *add_device(char *devname, int erase_size, const char *mtdname)
+ {
+       const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
+       struct block_device *bdev;
+       struct block2mtd_dev *dev;
++      struct mtd_partition *part;
+       char *name;
+ 
+       if (!devname)
+@@ -275,13 +277,16 @@ static struct block2mtd_dev *add_device(
+ 
+       /* Setup the MTD structure */
+       /* make the name contain the block device in */
+-      name = kasprintf(GFP_KERNEL, "block2mtd: %s", devname);
++      if (!mtdname)
++              mtdname = devname;
++      name = kmalloc(strlen(mtdname) + 1, GFP_KERNEL);
+       if (!name)
+               goto devinit_err;
+ 
++      strcpy(name, mtdname);
+       dev->mtd.name = name;
+ 
+-      dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK;
++      dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK & ~(erase_size - 1);
+       dev->mtd.erasesize = erase_size;
+       dev->mtd.writesize = 1;
+       dev->mtd.type = MTD_RAM;
+@@ -294,14 +299,17 @@ static struct block2mtd_dev *add_device(
+       dev->mtd.priv = dev;
+       dev->mtd.owner = THIS_MODULE;
+ 
+-      if (mtd_device_register(&dev->mtd, NULL, 0)) {
++      part = kzalloc(sizeof(struct mtd_partition), GFP_KERNEL);
++      part->name = name;
++      part->offset = 0;
++      part->size = dev->mtd.size;
++      if (mtd_device_register(&dev->mtd, part, 1)) {
+               /* Device didn't get added, so free the entry */
+               goto devinit_err;
+       }
+       list_add(&dev->list, &blkmtd_device_list);
+       INFO("mtd%d: [%s] erase_size = %dKiB [%d]", dev->mtd.index,
+-                      dev->mtd.name + strlen("block2mtd: "),
+-                      dev->mtd.erasesize >> 10, dev->mtd.erasesize);
++                      mtdname, dev->mtd.erasesize >> 10, dev->mtd.erasesize);
+       return dev;
+ 
+ devinit_err:
+@@ -374,9 +382,9 @@ static char block2mtd_paramline[80 + 12]
+ 
+ static int block2mtd_setup2(const char *val)
+ {
+-      char buf[80 + 12]; /* 80 for device, 12 for erase size */
++      char buf[80 + 12 + 80]; /* 80 for device, 12 for erase size, 80 for name */
+       char *str = buf;
+-      char *token[2];
++      char *token[3];
+       char *name;
+       size_t erase_size = PAGE_SIZE;
+       int i, ret;
+@@ -387,7 +395,7 @@ static int block2mtd_setup2(const char *
+       strcpy(str, val);
+       kill_final_newline(str);
+ 
+-      for (i = 0; i < 2; i++)
++      for (i = 0; i < 3; i++)
+               token[i] = strsep(&str, ",");
+ 
+       if (str)
+@@ -406,8 +414,10 @@ static int block2mtd_setup2(const char *
+                       parse_err("illegal erase size");
+               }
+       }
++      if (token[2] && (strlen(token[2]) + 1 > 80))
++              parse_err("mtd device name too long");
+ 
+-      add_device(name, erase_size);
++      add_device(name, erase_size, token[2]);
+ 
+       return 0;
+ }
+@@ -441,7 +451,7 @@ static int block2mtd_setup(const char *v
+ 
+ 
+ module_param_call(block2mtd, block2mtd_setup, NULL, NULL, 0200);
+-MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>]\"");
++MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>[,<name>]]\"");
+ 
+ static int __init block2mtd_init(void)
+ {
+--- a/fs/partitions/check.c
++++ b/fs/partitions/check.c
+@@ -664,6 +664,7 @@ rescan:
+       kfree(state);
+       return 0;
+ }
++EXPORT_SYMBOL(rescan_partitions);
+ 
+ unsigned char *read_dev_sector(struct block_device *bdev, sector_t n, Sector *p)
+ {

diff --git a/target/linux/generic/patches-3.0/441-block2mtd_refresh.patch b/target/linux/generic/patches-3.0/441-block2mtd_refresh.patch
new file mode 100644 (file)
index 0000000..24ee22f
--- /dev/null
+++ b/target/linux/generic/patches-3.0/441-block2mtd_refresh.patch
@@ -0,0 +1,291 @@
+--- a/drivers/mtd/devices/block2mtd.c
++++ b/drivers/mtd/devices/block2mtd.c
+@@ -30,6 +30,8 @@ struct block2mtd_dev {
+       struct block_device *blkdev;
+       struct mtd_info mtd;
+       struct mutex write_mutex;
++      rwlock_t bdev_mutex;
++      char devname[0];
+ };
+ 
+ 
+@@ -82,6 +84,12 @@ static int block2mtd_erase(struct mtd_in
+       size_t len = instr->len;
+       int err;
+ 
++      read_lock(&dev->bdev_mutex);
++      if (!dev->blkdev) {
++              err = -EINVAL;
++              goto done;
++      }
++
+       instr->state = MTD_ERASING;
+       mutex_lock(&dev->write_mutex);
+       err = _block2mtd_erase(dev, from, len);
+@@ -93,6 +101,10 @@ static int block2mtd_erase(struct mtd_in
+               instr->state = MTD_ERASE_DONE;
+ 
+       mtd_erase_callback(instr);
++
++done:
++      read_unlock(&dev->bdev_mutex);
++
+       return err;
+ }
+ 
+@@ -104,10 +116,14 @@ static int block2mtd_read(struct mtd_inf
+       struct page *page;
+       int index = from >> PAGE_SHIFT;
+       int offset = from & (PAGE_SIZE-1);
+-      int cpylen;
++      int cpylen, err = 0;
++
++      read_lock(&dev->bdev_mutex);
++      if (!dev->blkdev || (from > mtd->size)) {
++              err = -EINVAL;
++              goto done;
++      }
+ 
+-      if (from > mtd->size)
+-              return -EINVAL;
+       if (from + len > mtd->size)
+               len = mtd->size - from;
+ 
+@@ -122,10 +138,14 @@ static int block2mtd_read(struct mtd_inf
+               len = len - cpylen;
+ 
+               page = page_read(dev->blkdev->bd_inode->i_mapping, index);
+-              if (!page)
+-                      return -ENOMEM;
+-              if (IS_ERR(page))
+-                      return PTR_ERR(page);
++              if (!page) {
++                      err = -ENOMEM;
++                      goto done;
++              }
++              if (IS_ERR(page)) {
++                      err = PTR_ERR(page);
++                      goto done;
++              }
+ 
+               memcpy(buf, page_address(page) + offset, cpylen);
+               page_cache_release(page);
+@@ -136,7 +156,10 @@ static int block2mtd_read(struct mtd_inf
+               offset = 0;
+               index++;
+       }
+-      return 0;
++
++done:
++      read_unlock(&dev->bdev_mutex);
++      return err;
+ }
+ 
+ 
+@@ -188,12 +211,22 @@ static int block2mtd_write(struct mtd_in
+               size_t *retlen, const u_char *buf)
+ {
+       struct block2mtd_dev *dev = mtd->priv;
+-      int err;
++      int err = 0;
++
++      read_lock(&dev->bdev_mutex);
++      if (!dev->blkdev) {
++              err = -EINVAL;
++              goto done;
++      }
+ 
+       if (!len)
+-              return 0;
+-      if (to >= mtd->size)
+-              return -ENOSPC;
++              goto done;
++
++      if (to >= mtd->size) {
++              err = -ENOSPC;
++              goto done;
++      }
++
+       if (to + len > mtd->size)
+               len = mtd->size - to;
+ 
+@@ -202,6 +235,9 @@ static int block2mtd_write(struct mtd_in
+       mutex_unlock(&dev->write_mutex);
+       if (err > 0)
+               err = 0;
++
++done:
++      read_unlock(&dev->bdev_mutex);
+       return err;
+ }
+ 
+@@ -210,33 +246,110 @@ static int block2mtd_write(struct mtd_in
+ static void block2mtd_sync(struct mtd_info *mtd)
+ {
+       struct block2mtd_dev *dev = mtd->priv;
++      read_lock(&dev->bdev_mutex);
++      if (dev->blkdev)
+       sync_blockdev(dev->blkdev);
++      read_unlock(&dev->bdev_mutex);
++
+       return;
+ }
+ 
+ 
++static int _open_bdev(struct block2mtd_dev *dev)
++{
++      const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
++      struct block_device *bdev;
++
++      /* Get a handle on the device */
++      bdev = blkdev_get_by_path(dev->devname, mode, dev);
++#ifndef MODULE
++      if (IS_ERR(bdev)) {
++              dev_t devt;
++
++              /* We might not have rootfs mounted at this point. Try
++                 to resolve the device name by other means. */
++
++              devt = name_to_dev_t(dev->devname);
++              if (devt)
++                      bdev = blkdev_get_by_dev(devt, mode, dev);
++      }
++#endif
++
++      if (IS_ERR(bdev)) {
++              ERROR("error: cannot open device %s", dev->devname);
++              return 1;
++      }
++      dev->blkdev = bdev;
++
++      if (MAJOR(bdev->bd_dev) == MTD_BLOCK_MAJOR) {
++              ERROR("attempting to use an MTD device as a block device");
++              return 1;
++      }
++
++      return 0;
++}
++
++static void _close_bdev(struct block2mtd_dev *dev)
++{
++      struct block_device *bdev;
++
++      if (!dev->blkdev)
++              return;
++
++      bdev = dev->blkdev;
++      invalidate_mapping_pages(dev->blkdev->bd_inode->i_mapping, 0, -1);
++      blkdev_put(dev->blkdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
++      dev->blkdev = NULL;
++}
++
+ static void block2mtd_free_device(struct block2mtd_dev *dev)
+ {
+       if (!dev)
+               return;
+ 
+       kfree(dev->mtd.name);
+-
+-      if (dev->blkdev) {
+-              invalidate_mapping_pages(dev->blkdev->bd_inode->i_mapping,
+-                                      0, -1);
+-              blkdev_put(dev->blkdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
+-      }
+-
++      _close_bdev(dev);
+       kfree(dev);
+ }
+ 
+ 
+-/* FIXME: ensure that mtd->size % erase_size == 0 */
+-static struct block2mtd_dev *add_device(char *devname, int erase_size, const char *mtdname)
++static int block2mtd_refresh(struct mtd_info *mtd)
+ {
+-      const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
++      struct block2mtd_dev *dev = mtd->priv;
+       struct block_device *bdev;
++      dev_t devt;
++      int err = 0;
++
++      /* no other mtd function can run at this point */
++      write_lock(&dev->bdev_mutex);
++
++      /* get the device number for the whole disk */
++      devt = MKDEV(MAJOR(dev->blkdev->bd_dev), 0);
++
++      /* close the old block device */
++      _close_bdev(dev);
++
++      /* open the whole disk, issue a partition rescan, then */
++      bdev = blkdev_get_by_dev(devt, FMODE_WRITE | FMODE_READ, mtd);
++      if (!bdev || !bdev->bd_disk)
++              err = -EINVAL;
++#ifndef CONFIG_MTD_BLOCK2MTD_MODULE
++      else
++              err = rescan_partitions(bdev->bd_disk, bdev);
++#endif
++      if (bdev)
++              blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
++
++      /* try to open the partition block device again */
++      _open_bdev(dev);
++      write_unlock(&dev->bdev_mutex);
++
++      return err;
++}
++
++/* FIXME: ensure that mtd->size % erase_size == 0 */
++static struct block2mtd_dev *add_device(char *devname, int erase_size, char *mtdname)
++{
+       struct block2mtd_dev *dev;
+       struct mtd_partition *part;
+       char *name;
+@@ -244,36 +357,17 @@ static struct block2mtd_dev *add_device(
+       if (!devname)
+               return NULL;
+ 
+-      dev = kzalloc(sizeof(struct block2mtd_dev), GFP_KERNEL);
++      dev = kzalloc(sizeof(struct block2mtd_dev) + strlen(devname) + 1, GFP_KERNEL);
+       if (!dev)
+               return NULL;
+ 
+-      /* Get a handle on the device */
+-      bdev = blkdev_get_by_path(devname, mode, dev);
+-#ifndef MODULE
+-      if (IS_ERR(bdev)) {
+-
+-              /* We might not have rootfs mounted at this point. Try
+-                 to resolve the device name by other means. */
++      strcpy(dev->devname, devname);
+ 
+-              dev_t devt = name_to_dev_t(devname);
+-              if (devt)
+-                      bdev = blkdev_get_by_dev(devt, mode, dev);
+-      }
+-#endif
+-
+-      if (IS_ERR(bdev)) {
+-              ERROR("error: cannot open device %s", devname);
++      if (_open_bdev(dev))
+               goto devinit_err;
+-      }
+-      dev->blkdev = bdev;
+-
+-      if (MAJOR(bdev->bd_dev) == MTD_BLOCK_MAJOR) {
+-              ERROR("attempting to use an MTD device as a block device");
+-              goto devinit_err;
+-      }
+ 
+       mutex_init(&dev->write_mutex);
++      rwlock_init(&dev->bdev_mutex);
+ 
+       /* Setup the MTD structure */
+       /* make the name contain the block device in */
+@@ -298,6 +392,7 @@ static struct block2mtd_dev *add_device(
+       dev->mtd.read = block2mtd_read;
+       dev->mtd.priv = dev;
+       dev->mtd.owner = THIS_MODULE;
++      dev->mtd.refresh_device = block2mtd_refresh;
+ 
+       part = kzalloc(sizeof(struct mtd_partition), GFP_KERNEL);
+       part->name = name;

diff --git a/target/linux/generic/patches-3.0/442-block2mtd_probe.patch b/target/linux/generic/patches-3.0/442-block2mtd_probe.patch
new file mode 100644 (file)
index 0000000..780dd28
--- /dev/null
+++ b/target/linux/generic/patches-3.0/442-block2mtd_probe.patch
@@ -0,0 +1,10 @@
+--- a/drivers/mtd/devices/block2mtd.c
++++ b/drivers/mtd/devices/block2mtd.c
+@@ -269,6 +269,7 @@ static int _open_bdev(struct block2mtd_d
+               /* We might not have rootfs mounted at this point. Try
+                  to resolve the device name by other means. */
+ 
++              wait_for_device_probe();
+               devt = name_to_dev_t(dev->devname);
+               if (devt)
+                       bdev = blkdev_get_by_dev(devt, mode, dev);

diff --git a/target/linux/generic/patches-3.0/450-mtd_plat_nand_chip_fixup.patch b/target/linux/generic/patches-3.0/450-mtd_plat_nand_chip_fixup.patch
new file mode 100644 (file)
index 0000000..98b4c56
--- /dev/null
+++ b/target/linux/generic/patches-3.0/450-mtd_plat_nand_chip_fixup.patch
@@ -0,0 +1,37 @@
+---
+ drivers/mtd/nand/plat_nand.c |   13 ++++++++++++-
+ include/linux/mtd/nand.h     |    1 +
+ 2 files changed, 13 insertions(+), 1 deletion(-)
+
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -625,6 +625,7 @@ struct platform_nand_chip {
+       int chip_delay;
+       unsigned int options;
+       const char **part_probe_types;
++      int (*chip_fixup)(struct mtd_info *mtd);
+       void (*set_parts)(uint64_t size, struct platform_nand_chip *chip);
+       void *priv;
+ };
+--- a/drivers/mtd/nand/plat_nand.c
++++ b/drivers/mtd/nand/plat_nand.c
+@@ -94,7 +94,18 @@ static int __devinit plat_nand_probe(str
+       }
+ 
+       /* Scan to find existence of the device */
+-      if (nand_scan(&data->mtd, pdata->chip.nr_chips)) {
++      if (nand_scan_ident(&data->mtd, pdata->chip.nr_chips, NULL)) {
++              res = -ENXIO;
++              goto out;
++      }
++
++      if (pdata->chip.chip_fixup) {
++              res = pdata->chip.chip_fixup(&data->mtd);
++              if (res)
++                      goto out;
++      }
++
++      if (nand_scan_tail(&data->mtd)) {
+               err = -ENXIO;
+               goto out;
+       }

diff --git a/target/linux/generic/patches-3.0/451-mtd_fix_nand_correct_data_return_code.patch b/target/linux/generic/patches-3.0/451-mtd_fix_nand_correct_data_return_code.patch
new file mode 100644 (file)
index 0000000..f630059
--- /dev/null
+++ b/target/linux/generic/patches-3.0/451-mtd_fix_nand_correct_data_return_code.patch
@@ -0,0 +1,12 @@
+--- a/drivers/mtd/nand/nand_ecc.c
++++ b/drivers/mtd/nand/nand_ecc.c
+@@ -507,8 +507,7 @@ int __nand_correct_data(unsigned char *b
+       if ((bitsperbyte[b0] + bitsperbyte[b1] + bitsperbyte[b2]) == 1)
+               return 1;       /* error in ecc data; no action needed */
+ 
+-      printk(KERN_ERR "uncorrectable error : ");
+-      return -1;
++      return -EBADMSG;
+ }
+ EXPORT_SYMBOL(__nand_correct_data);
+ 

diff --git a/target/linux/generic/patches-3.0/470-mtd_m25p80_add_pm25lv_flash_support.patch b/target/linux/generic/patches-3.0/470-mtd_m25p80_add_pm25lv_flash_support.patch
new file mode 100644 (file)
index 0000000..7b5923e
--- /dev/null
+++ b/target/linux/generic/patches-3.0/470-mtd_m25p80_add_pm25lv_flash_support.patch
@@ -0,0 +1,39 @@
+--- a/drivers/mtd/devices/m25p80.c
++++ b/drivers/mtd/devices/m25p80.c
+@@ -44,6 +44,7 @@
+ #define       OPCODE_BE_4K            0x20    /* Erase 4KiB block */
+ #define       OPCODE_BE_32K           0x52    /* Erase 32KiB block */
+ #define       OPCODE_CHIP_ERASE       0xc7    /* Erase whole flash chip */
++#define       OPCODE_BE_4K_PMC        0xd7    /* Erase 4KiB block on PMC chips*/
+ #define       OPCODE_SE               0xd8    /* Sector erase (usually 64KiB) */
+ #define       OPCODE_RDID             0x9f    /* Read JEDEC ID */
+ 
+@@ -630,6 +631,7 @@ struct flash_info {
+       u16             flags;
+ #define       SECT_4K         0x01            /* OPCODE_BE_4K works uniformly */
+ #define       M25P_NO_ERASE   0x02            /* No erase command needed */
++#define       SECT_4K_PMC     0x04            /* OPCODE_BE_4K_PMC works uniformly */
+ };
+ 
+ #define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags)    \
+@@ -689,6 +691,10 @@ static const struct spi_device_id m25p_i
+       { "mx25l25635e", INFO(0xc22019, 0, 64 * 1024, 512, 0) },
+       { "mx25l25655e", INFO(0xc22619, 0, 64 * 1024, 512, 0) },
+ 
++      /* PMC -- pm25x "blocks" are 32K, sectors are 4K */
++      { "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },
++      { "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) },
++
+       /* Spansion -- single (large) sector size only, at least
+        * for the chips listed here (without boot sectors).
+        */
+@@ -920,6 +926,9 @@ static int __devinit m25p_probe(struct s
+       if (info->flags & SECT_4K) {
+               flash->erase_opcode = OPCODE_BE_4K;
+               flash->mtd.erasesize = 4096;
++      } else if (info->flags & SECT_4K_PMC) {
++              flash->erase_opcode = OPCODE_BE_4K_PMC;
++              flash->mtd.erasesize = 4096;
+       } else {
+               flash->erase_opcode = OPCODE_SE;
+               flash->mtd.erasesize = info->sector_size;

diff --git a/target/linux/generic/patches-3.0/473-mtd_m25p80_add_w25q128.patch b/target/linux/generic/patches-3.0/473-mtd_m25p80_add_w25q128.patch
new file mode 100644 (file)
index 0000000..fbe07b6
--- /dev/null
+++ b/target/linux/generic/patches-3.0/473-mtd_m25p80_add_w25q128.patch
@@ -0,0 +1,10 @@
+--- a/drivers/mtd/devices/m25p80.c
++++ b/drivers/mtd/devices/m25p80.c
+@@ -768,6 +768,7 @@ static const struct spi_device_id m25p_i
+       { "w25q32", INFO(0xef4016, 0, 64 * 1024,  64, SECT_4K) },
+       { "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) },
+       { "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) },
++      { "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) },
+ 
+       /* Catalyst / On Semiconductor -- non-JEDEC */
+       { "cat25c11", CAT25_INFO(  16, 8, 16, 1) },

diff --git a/target/linux/generic/patches-3.0/474-mtd_concat_sync_fix.patch b/target/linux/generic/patches-3.0/474-mtd_concat_sync_fix.patch
new file mode 100644 (file)
index 0000000..ff3759e
--- /dev/null
+++ b/target/linux/generic/patches-3.0/474-mtd_concat_sync_fix.patch
@@ -0,0 +1,12 @@
+--- a/drivers/mtd/mtdconcat.c
++++ b/drivers/mtd/mtdconcat.c
+@@ -619,7 +619,8 @@ static void concat_sync(struct mtd_info
+ 
+       for (i = 0; i < concat->num_subdev; i++) {
+               struct mtd_info *subdev = concat->subdev[i];
+-              subdev->sync(subdev);
++              if (subdev->sync)
++                      subdev->sync(subdev);
+       }
+ }
+ 

diff --git a/target/linux/generic/patches-3.0/500-yaffs_support.patch b/target/linux/generic/patches-3.0/500-yaffs_support.patch
new file mode 100644 (file)
index 0000000..51ef4fc
--- /dev/null
+++ b/target/linux/generic/patches-3.0/500-yaffs_support.patch
@@ -0,0 +1,18 @@
+--- a/fs/Kconfig
++++ b/fs/Kconfig
+@@ -35,6 +35,7 @@ source "fs/gfs2/Kconfig"
+ source "fs/ocfs2/Kconfig"
+ source "fs/btrfs/Kconfig"
+ source "fs/nilfs2/Kconfig"
++source "fs/yaffs2/Kconfig"
+ 
+ endif # BLOCK
+ 
+--- a/fs/Makefile
++++ b/fs/Makefile
+@@ -125,3 +125,5 @@ obj-$(CONFIG_GFS2_FS)           += gfs2/
+ obj-$(CONFIG_EXOFS_FS)          += exofs/
+ obj-$(CONFIG_CEPH_FS)         += ceph/
+ obj-$(CONFIG_PSTORE)          += pstore/
++obj-$(CONFIG_YAFFS_FS)                += yaffs2/
++

diff --git a/target/linux/generic/patches-3.0/501-yaffs_cvs_2009_04_24.patch b/target/linux/generic/patches-3.0/501-yaffs_cvs_2009_04_24.patch
new file mode 100644 (file)
index 0000000..c334b17
--- /dev/null
+++ b/target/linux/generic/patches-3.0/501-yaffs_cvs_2009_04_24.patch
@@ -0,0 +1,12344 @@
+--- a/fs/yaffs2/devextras.h
++++ b/fs/yaffs2/devextras.h
+@@ -14,194 +14,135 @@
+  */
+ 
+ /*
+- * This file is just holds extra declarations used during development.
+- * Most of these are from kernel includes placed here so we can use them in
+- * applications.
++ * This file is just holds extra declarations of macros that would normally
++ * be providesd in the Linux kernel. These macros have been written from
++ * scratch but are functionally equivalent to the Linux ones.
+  *
+  */
+ 
+ #ifndef __EXTRAS_H__
+ #define __EXTRAS_H__
+ 
+-#if defined WIN32
+-#define __inline__ __inline
+-#define new newHack
+-#endif
+-
+-#if !(defined __KERNEL__) || (defined WIN32)
+ 
+-/* User space defines */
++#if !(defined __KERNEL__)
+ 
++/* Definition of types */
+ typedef unsigned char __u8;
+ typedef unsigned short __u16;
+ typedef unsigned __u32;
+ 
++#endif
++
+ /*
+- * Simple doubly linked list implementation.
+- *
+- * Some of the internal functions ("__xxx") are useful when
+- * manipulating whole lists rather than single entries, as
+- * sometimes we already know the next/prev entries and we can
+- * generate better code by using them directly rather than
+- * using the generic single-entry routines.
++ * This is a simple doubly linked list implementation that matches the
++ * way the Linux kernel doubly linked list implementation works.
+  */
+ 
+-#define prefetch(x) 1
+-
+-struct list_head {
+-      struct list_head *next, *prev;
++struct ylist_head {
++      struct ylist_head *next; /* next in chain */
++      struct ylist_head *prev; /* previous in chain */
+ };
+ 
+-#define LIST_HEAD_INIT(name) { &(name), &(name) }
+ 
+-#define LIST_HEAD(name) \
+-      struct list_head name = LIST_HEAD_INIT(name)
++/* Initialise a static list */
++#define YLIST_HEAD(name) \
++struct ylist_head name = { &(name), &(name)}
++
+ 
+-#define INIT_LIST_HEAD(ptr) do { \
+-      (ptr)->next = (ptr); (ptr)->prev = (ptr); \
++
++/* Initialise a list head to an empty list */
++#define YINIT_LIST_HEAD(p) \
++do { \
++      (p)->next = (p);\
++      (p)->prev = (p); \
+ } while (0)
+ 
+-/*
+- * Insert a new entry between two known consecutive entries.
+- *
+- * This is only for internal list manipulation where we know
+- * the prev/next entries already!
+- */
+-static __inline__ void __list_add(struct list_head *new,
+-                                struct list_head *prev,
+-                                struct list_head *next)
+-{
+-      next->prev = new;
+-      new->next = next;
+-      new->prev = prev;
+-      prev->next = new;
+-}
+ 
+-/**
+- * list_add - add a new entry
+- * @new: new entry to be added
+- * @head: list head to add it after
+- *
+- * Insert a new entry after the specified head.
+- * This is good for implementing stacks.
+- */
+-static __inline__ void list_add(struct list_head *new, struct list_head *head)
++/* Add an element to a list */
++static __inline__ void ylist_add(struct ylist_head *newEntry,
++                              struct ylist_head *list)
+ {
+-      __list_add(new, head, head->next);
+-}
++      struct ylist_head *listNext = list->next;
++
++      list->next = newEntry;
++      newEntry->prev = list;
++      newEntry->next = listNext;
++      listNext->prev = newEntry;
+ 
+-/**
+- * list_add_tail - add a new entry
+- * @new: new entry to be added
+- * @head: list head to add it before
+- *
+- * Insert a new entry before the specified head.
+- * This is useful for implementing queues.
+- */
+-static __inline__ void list_add_tail(struct list_head *new,
+-                                   struct list_head *head)
+-{
+-      __list_add(new, head->prev, head);
+ }
+ 
+-/*
+- * Delete a list entry by making the prev/next entries
+- * point to each other.
+- *
+- * This is only for internal list manipulation where we know
+- * the prev/next entries already!
+- */
+-static __inline__ void __list_del(struct list_head *prev,
+-                                struct list_head *next)
++static __inline__ void ylist_add_tail(struct ylist_head *newEntry,
++                               struct ylist_head *list)
+ {
+-      next->prev = prev;
+-      prev->next = next;
++      struct ylist_head *listPrev = list->prev;
++
++      list->prev = newEntry;
++      newEntry->next = list;
++      newEntry->prev = listPrev;
++      listPrev->next = newEntry;
++
+ }
+ 
+-/**
+- * list_del - deletes entry from list.
+- * @entry: the element to delete from the list.
+- * Note: list_empty on entry does not return true after this, the entry is
+- * in an undefined state.
+- */
+-static __inline__ void list_del(struct list_head *entry)
++
++/* Take an element out of its current list, with or without
++ * reinitialising the links.of the entry*/
++static __inline__ void ylist_del(struct ylist_head *entry)
+ {
+-      __list_del(entry->prev, entry->next);
++      struct ylist_head *listNext = entry->next;
++      struct ylist_head *listPrev = entry->prev;
++
++      listNext->prev = listPrev;
++      listPrev->next = listNext;
++
+ }
+ 
+-/**
+- * list_del_init - deletes entry from list and reinitialize it.
+- * @entry: the element to delete from the list.
+- */
+-static __inline__ void list_del_init(struct list_head *entry)
++static __inline__ void ylist_del_init(struct ylist_head *entry)
+ {
+-      __list_del(entry->prev, entry->next);
+-      INIT_LIST_HEAD(entry);
++      ylist_del(entry);
++      entry->next = entry->prev = entry;
+ }
+ 
+-/**
+- * list_empty - tests whether a list is empty
+- * @head: the list to test.
+- */
+-static __inline__ int list_empty(struct list_head *head)
++
++/* Test if the list is empty */
++static __inline__ int ylist_empty(struct ylist_head *entry)
+ {
+-      return head->next == head;
++      return (entry->next == entry);
+ }
+ 
+-/**
+- * list_splice - join two lists
+- * @list: the new list to add.
+- * @head: the place to add it in the first list.
++
++/* ylist_entry takes a pointer to a list entry and offsets it to that
++ * we can find a pointer to the object it is embedded in.
+  */
+-static __inline__ void list_splice(struct list_head *list,
+-                                 struct list_head *head)
+-{
+-      struct list_head *first = list->next;
+ 
+-      if (first != list) {
+-              struct list_head *last = list->prev;
+-              struct list_head *at = head->next;
+-
+-              first->prev = head;
+-              head->next = first;
+-
+-              last->next = at;
+-              at->prev = last;
+-      }
+-}
+ 
+-/**
+- * list_entry - get the struct for this entry
+- * @ptr:      the &struct list_head pointer.
+- * @type:     the type of the struct this is embedded in.
+- * @member:   the name of the list_struct within the struct.
+- */
+-#define list_entry(ptr, type, member) \
+-      ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
+-
+-/**
+- * list_for_each      -       iterate over a list
+- * @pos:      the &struct list_head to use as a loop counter.
+- * @head:     the head for your list.
+- */
+-#define list_for_each(pos, head) \
+-      for (pos = (head)->next, prefetch(pos->next); pos != (head); \
+-              pos = pos->next, prefetch(pos->next))
+-
+-/**
+- * list_for_each_safe -       iterate over a list safe against removal
+- *                              of list entry
+- * @pos:      the &struct list_head to use as a loop counter.
+- * @n:                another &struct list_head to use as temporary storage
+- * @head:     the head for your list.
+- */
+-#define list_for_each_safe(pos, n, head) \
+-      for (pos = (head)->next, n = pos->next; pos != (head); \
+-              pos = n, n = pos->next)
++#define ylist_entry(entry, type, member) \
++      ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member)))
+ 
+-/*
+- * File types
++
++/* ylist_for_each and list_for_each_safe  iterate over lists.
++ * ylist_for_each_safe uses temporary storage to make the list delete safe
+  */
++
++#define ylist_for_each(itervar, list) \
++      for (itervar = (list)->next; itervar != (list); itervar = itervar->next)
++
++#define ylist_for_each_safe(itervar, saveVar, list) \
++      for (itervar = (list)->next, saveVar = (list)->next->next; \
++              itervar != (list); itervar = saveVar, saveVar = saveVar->next)
++
++
++#if !(defined __KERNEL__)
++
++
++#ifndef WIN32
++#include <sys/stat.h>
++#endif
++
++
++#ifdef CONFIG_YAFFS_PROVIDE_DEFS
++/* File types */
++
++
+ #define DT_UNKNOWN    0
+ #define DT_FIFO               1
+ #define DT_CHR                2
+@@ -212,6 +153,7 @@ static __inline__ void list_splice(struc
+ #define DT_SOCK               12
+ #define DT_WHT                14
+ 
++
+ #ifndef WIN32
+ #include <sys/stat.h>
+ #endif
+@@ -227,10 +169,6 @@ static __inline__ void list_splice(struc
+ #define ATTR_ATIME    16
+ #define ATTR_MTIME    32
+ #define ATTR_CTIME    64
+-#define ATTR_ATIME_SET        128
+-#define ATTR_MTIME_SET        256
+-#define ATTR_FORCE    512     /* Not a change, but a change it */
+-#define ATTR_ATTR_FLAG        1024
+ 
+ struct iattr {
+       unsigned int ia_valid;
+@@ -244,21 +182,15 @@ struct iattr {
+       unsigned int ia_attr_flags;
+ };
+ 
+-#define KERN_DEBUG
++#endif
+ 
+ #else
+ 
+-#ifndef WIN32
+ #include <linux/types.h>
+-#include <linux/list.h>
+ #include <linux/fs.h>
+ #include <linux/stat.h>
+-#endif
+ 
+ #endif
+ 
+-#if defined WIN32
+-#undef new
+-#endif
+ 
+ #endif
+--- a/fs/yaffs2/Kconfig
++++ b/fs/yaffs2/Kconfig
+@@ -5,7 +5,7 @@
+ config YAFFS_FS
+       tristate "YAFFS2 file system support"
+       default n
+-      depends on MTD
++      depends on MTD_BLOCK
+       select YAFFS_YAFFS1
+       select YAFFS_YAFFS2
+       help
+@@ -43,7 +43,8 @@ config YAFFS_9BYTE_TAGS
+         format that you need to continue to support.  New data written
+         also uses the older-style format.  Note: Use of this option
+         generally requires that MTD's oob layout be adjusted to use the
+-        older-style format.  See notes on tags formats and MTD versions.
++        older-style format.  See notes on tags formats and MTD versions
++        in yaffs_mtdif1.c.
+ 
+         If unsure, say N.
+ 
+@@ -109,26 +110,6 @@ config YAFFS_DISABLE_LAZY_LOAD
+ 
+         If unsure, say N.
+ 
+-config YAFFS_CHECKPOINT_RESERVED_BLOCKS
+-      int "Reserved blocks for checkpointing"
+-      depends on YAFFS_YAFFS2
+-      default 10
+-      help
+-          Give the number of Blocks to reserve for checkpointing.
+-        Checkpointing saves the state at unmount so that mounting is
+-        much faster as a scan of all the flash to regenerate this state
+-        is not needed.  These Blocks are reserved per partition, so if
+-        you have very small partitions the default (10) may be a mess
+-        for you.  You can set this value to 0, but that does not mean
+-        checkpointing is disabled at all. There only won't be any
+-        specially reserved blocks for checkpointing, so if there is
+-        enough free space on the filesystem, it will be used for
+-        checkpointing.
+-
+-        If unsure, leave at default (10), but don't wonder if there are
+-        always 2MB used on your large page device partition (10 x 2k
+-        pagesize). When using small partitions or when being very small
+-        on space, you probably want to set this to zero.
+ 
+ config YAFFS_DISABLE_WIDE_TNODES
+       bool "Turn off wide tnodes"
+--- a/fs/yaffs2/Makefile
++++ b/fs/yaffs2/Makefile
+@@ -5,7 +5,6 @@
+ obj-$(CONFIG_YAFFS_FS) += yaffs.o
+ 
+ yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o
+-yaffs-y += yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o
++yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o
+ yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o
+-yaffs-y += yaffs_mtdif1.o yaffs_packedtags1.o
+-yaffs-y += yaffs_mtdif.o yaffs_mtdif2.o
++yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o
+--- a/fs/yaffs2/moduleconfig.h
++++ b/fs/yaffs2/moduleconfig.h
+@@ -27,12 +27,12 @@
+ 
+ /* Default: Not selected */
+ /* Meaning: Yaffs does its own ECC, rather than using MTD ECC */
+-//#define CONFIG_YAFFS_DOES_ECC
++/* #define CONFIG_YAFFS_DOES_ECC */
+ 
+ /* Default: Not selected */
+ /* Meaning: ECC byte order is 'wrong'.  Only meaningful if */
+ /*          CONFIG_YAFFS_DOES_ECC is set */
+-//#define CONFIG_YAFFS_ECC_WRONG_ORDER
++/* #define CONFIG_YAFFS_ECC_WRONG_ORDER */
+ 
+ /* Default: Selected */
+ /* Meaning: Disables testing whether chunks are erased before writing to them*/
+@@ -54,11 +54,11 @@ that you need to continue to support.  N
+ older-style format.
+ Note: Use of this option generally requires that MTD's oob layout be
+ adjusted to use the older-style format.  See notes on tags formats and
+-MTD versions.
++MTD versions in yaffs_mtdif1.c.
+ */
+ /* Default: Not selected */
+ /* Meaning: Use older-style on-NAND data format with pageStatus byte */
+-#define CONFIG_YAFFS_9BYTE_TAGS
++/* #define CONFIG_YAFFS_9BYTE_TAGS */
+ 
+ #endif /* YAFFS_OUT_OF_TREE */
+ 
+--- a/fs/yaffs2/yaffs_checkptrw.c
++++ b/fs/yaffs2/yaffs_checkptrw.c
+@@ -12,48 +12,43 @@
+  */
+ 
+ const char *yaffs_checkptrw_c_version =
+-    "$Id: yaffs_checkptrw.c,v 1.14 2007-05-15 20:07:40 charles Exp $";
++      "$Id: yaffs_checkptrw.c,v 1.18 2009-03-06 17:20:49 wookey Exp $";
+ 
+ 
+ #include "yaffs_checkptrw.h"
+-
++#include "yaffs_getblockinfo.h"
+ 
+ static int yaffs_CheckpointSpaceOk(yaffs_Device *dev)
+ {
+-
+       int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
+ 
+       T(YAFFS_TRACE_CHECKPOINT,
+               (TSTR("checkpt blocks available = %d" TENDSTR),
+               blocksAvailable));
+ 
+-
+       return (blocksAvailable <= 0) ? 0 : 1;
+ }
+ 
+ 
+ static int yaffs_CheckpointErase(yaffs_Device *dev)
+ {
+-
+       int i;
+ 
+-
+-      if(!dev->eraseBlockInNAND)
++      if (!dev->eraseBlockInNAND)
+               return 0;
+-      T(YAFFS_TRACE_CHECKPOINT,(TSTR("checking blocks %d to %d"TENDSTR),
+-              dev->internalStartBlock,dev->internalEndBlock));
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("checking blocks %d to %d"TENDSTR),
++              dev->internalStartBlock, dev->internalEndBlock));
+ 
+-      for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
+-              yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
+-              if(bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT){
+-                      T(YAFFS_TRACE_CHECKPOINT,(TSTR("erasing checkpt block %d"TENDSTR),i));
+-                      if(dev->eraseBlockInNAND(dev,i- dev->blockOffset /* realign */)){
++      for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
++              yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
++              if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) {
++                      T(YAFFS_TRACE_CHECKPOINT, (TSTR("erasing checkpt block %d"TENDSTR), i));
++                      if (dev->eraseBlockInNAND(dev, i - dev->blockOffset /* realign */)) {
+                               bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
+                               dev->nErasedBlocks++;
+                               dev->nFreeChunks += dev->nChunksPerBlock;
+-                      }
+-                      else {
+-                              dev->markNANDBlockBad(dev,i);
++                      } else {
++                              dev->markNANDBlockBad(dev, i);
+                               bi->blockState = YAFFS_BLOCK_STATE_DEAD;
+                       }
+               }
+@@ -71,23 +66,23 @@ static void yaffs_CheckpointFindNextEras
+       int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
+       T(YAFFS_TRACE_CHECKPOINT,
+               (TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR),
+-              dev->nErasedBlocks,dev->nReservedBlocks,blocksAvailable,dev->checkpointNextBlock));
++              dev->nErasedBlocks, dev->nReservedBlocks, blocksAvailable, dev->checkpointNextBlock));
+ 
+-      if(dev->checkpointNextBlock >= 0 &&
+-         dev->checkpointNextBlock <= dev->internalEndBlock &&
+-         blocksAvailable > 0){
+-
+-              for(i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++){
+-                      yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
+-                      if(bi->blockState == YAFFS_BLOCK_STATE_EMPTY){
++      if (dev->checkpointNextBlock >= 0 &&
++                      dev->checkpointNextBlock <= dev->internalEndBlock &&
++                      blocksAvailable > 0) {
++
++              for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) {
++                      yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
++                      if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) {
+                               dev->checkpointNextBlock = i + 1;
+                               dev->checkpointCurrentBlock = i;
+-                              T(YAFFS_TRACE_CHECKPOINT,(TSTR("allocating checkpt block %d"TENDSTR),i));
++                              T(YAFFS_TRACE_CHECKPOINT, (TSTR("allocating checkpt block %d"TENDSTR), i));
+                               return;
+                       }
+               }
+       }
+-      T(YAFFS_TRACE_CHECKPOINT,(TSTR("out of checkpt blocks"TENDSTR)));
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("out of checkpt blocks"TENDSTR)));
+ 
+       dev->checkpointNextBlock = -1;
+       dev->checkpointCurrentBlock = -1;
+@@ -98,30 +93,31 @@ static void yaffs_CheckpointFindNextChec
+       int  i;
+       yaffs_ExtendedTags tags;
+ 
+-      T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: start:  blocks %d next %d" TENDSTR),
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: start:  blocks %d next %d" TENDSTR),
+               dev->blocksInCheckpoint, dev->checkpointNextBlock));
+ 
+-      if(dev->blocksInCheckpoint < dev->checkpointMaxBlocks)
+-              for(i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++){
++      if (dev->blocksInCheckpoint < dev->checkpointMaxBlocks)
++              for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) {
+                       int chunk = i * dev->nChunksPerBlock;
+                       int realignedChunk = chunk - dev->chunkOffset;
+ 
+-                      dev->readChunkWithTagsFromNAND(dev,realignedChunk,NULL,&tags);
+-                      T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR),
+-                              i, tags.objectId,tags.sequenceNumber,tags.eccResult));
++                      dev->readChunkWithTagsFromNAND(dev, realignedChunk,
++                                      NULL, &tags);
++                      T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR),
++                              i, tags.objectId, tags.sequenceNumber, tags.eccResult));
+ 
+-                      if(tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA){
++                      if (tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) {
+                               /* Right kind of block */
+                               dev->checkpointNextBlock = tags.objectId;
+                               dev->checkpointCurrentBlock = i;
+                               dev->checkpointBlockList[dev->blocksInCheckpoint] = i;
+                               dev->blocksInCheckpoint++;
+-                              T(YAFFS_TRACE_CHECKPOINT,(TSTR("found checkpt block %d"TENDSTR),i));
++                              T(YAFFS_TRACE_CHECKPOINT, (TSTR("found checkpt block %d"TENDSTR), i));
+                               return;
+                       }
+               }
+ 
+-      T(YAFFS_TRACE_CHECKPOINT,(TSTR("found no more checkpt blocks"TENDSTR)));
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("found no more checkpt blocks"TENDSTR)));
+ 
+       dev->checkpointNextBlock = -1;
+       dev->checkpointCurrentBlock = -1;
+@@ -133,17 +129,17 @@ int yaffs_CheckpointOpen(yaffs_Device *d
+ 
+       /* Got the functions we need? */
+       if (!dev->writeChunkWithTagsToNAND ||
+-          !dev->readChunkWithTagsFromNAND ||
+-          !dev->eraseBlockInNAND ||
+-          !dev->markNANDBlockBad)
++                      !dev->readChunkWithTagsFromNAND ||
++                      !dev->eraseBlockInNAND ||
++                      !dev->markNANDBlockBad)
+               return 0;
+ 
+-      if(forWriting && !yaffs_CheckpointSpaceOk(dev))
++      if (forWriting && !yaffs_CheckpointSpaceOk(dev))
+               return 0;
+ 
+-      if(!dev->checkpointBuffer)
+-              dev->checkpointBuffer = YMALLOC_DMA(dev->nDataBytesPerChunk);
+-      if(!dev->checkpointBuffer)
++      if (!dev->checkpointBuffer)
++              dev->checkpointBuffer = YMALLOC_DMA(dev->totalBytesPerChunk);
++      if (!dev->checkpointBuffer)
+               return 0;
+ 
+ 
+@@ -159,12 +155,10 @@ int yaffs_CheckpointOpen(yaffs_Device *d
+       dev->checkpointNextBlock = dev->internalStartBlock;
+ 
+       /* Erase all the blocks in the checkpoint area */
+-      if(forWriting){
+-              memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk);
++      if (forWriting) {
++              memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk);
+               dev->checkpointByteOffset = 0;
+               return yaffs_CheckpointErase(dev);
+-
+-
+       } else {
+               int i;
+               /* Set to a value that will kick off a read */
+@@ -174,7 +168,7 @@ int yaffs_CheckpointOpen(yaffs_Device *d
+               dev->blocksInCheckpoint = 0;
+               dev->checkpointMaxBlocks = (dev->internalEndBlock - dev->internalStartBlock)/16 + 2;
+               dev->checkpointBlockList = YMALLOC(sizeof(int) * dev->checkpointMaxBlocks);
+-              for(i = 0; i < dev->checkpointMaxBlocks; i++)
++              for (i = 0; i < dev->checkpointMaxBlocks; i++)
+                       dev->checkpointBlockList[i] = -1;
+       }
+ 
+@@ -191,18 +185,17 @@ int yaffs_GetCheckpointSum(yaffs_Device
+ 
+ static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev)
+ {
+-
+       int chunk;
+       int realignedChunk;
+ 
+       yaffs_ExtendedTags tags;
+ 
+-      if(dev->checkpointCurrentBlock < 0){
++      if (dev->checkpointCurrentBlock < 0) {
+               yaffs_CheckpointFindNextErasedBlock(dev);
+               dev->checkpointCurrentChunk = 0;
+       }
+ 
+-      if(dev->checkpointCurrentBlock < 0)
++      if (dev->checkpointCurrentBlock < 0)
+               return 0;
+ 
+       tags.chunkDeleted = 0;
+@@ -210,10 +203,10 @@ static int yaffs_CheckpointFlushBuffer(y
+       tags.chunkId = dev->checkpointPageSequence + 1;
+       tags.sequenceNumber =  YAFFS_SEQUENCE_CHECKPOINT_DATA;
+       tags.byteCount = dev->nDataBytesPerChunk;
+-      if(dev->checkpointCurrentChunk == 0){
++      if (dev->checkpointCurrentChunk == 0) {
+               /* First chunk we write for the block? Set block state to
+                  checkpoint */
+-              yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,dev->checkpointCurrentBlock);
++              yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointCurrentBlock);
+               bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
+               dev->blocksInCheckpoint++;
+       }
+@@ -221,28 +214,29 @@ static int yaffs_CheckpointFlushBuffer(y
+       chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk;
+ 
+ 
+-      T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR),
+-              chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk,tags.objectId,tags.chunkId));
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR),
++              chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk, tags.objectId, tags.chunkId));
+ 
+       realignedChunk = chunk - dev->chunkOffset;
+ 
+-      dev->writeChunkWithTagsToNAND(dev,realignedChunk,dev->checkpointBuffer,&tags);
++      dev->writeChunkWithTagsToNAND(dev, realignedChunk,
++                      dev->checkpointBuffer, &tags);
+       dev->checkpointByteOffset = 0;
+       dev->checkpointPageSequence++;
+       dev->checkpointCurrentChunk++;
+-      if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock){
++      if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) {
+               dev->checkpointCurrentChunk = 0;
+               dev->checkpointCurrentBlock = -1;
+       }
+-      memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk);
++      memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk);
+ 
+       return 1;
+ }
+ 
+ 
+-int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes)
++int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes)
+ {
+-      int i=0;
++      int i = 0;
+       int ok = 1;
+ 
+ 
+@@ -250,17 +244,14 @@ int yaffs_CheckpointWrite(yaffs_Device *
+ 
+ 
+ 
+-      if(!dev->checkpointBuffer)
++      if (!dev->checkpointBuffer)
+               return 0;
+ 
+-      if(!dev->checkpointOpenForWrite)
++      if (!dev->checkpointOpenForWrite)
+               return -1;
+ 
+-      while(i < nBytes && ok) {
+-
+-
+-
+-              dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes ;
++      while (i < nBytes && ok) {
++              dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes;
+               dev->checkpointSum += *dataBytes;
+               dev->checkpointXor ^= *dataBytes;
+ 
+@@ -270,18 +261,17 @@ int yaffs_CheckpointWrite(yaffs_Device *
+               dev->checkpointByteCount++;
+ 
+ 
+-              if(dev->checkpointByteOffset < 0 ||
++              if (dev->checkpointByteOffset < 0 ||
+                  dev->checkpointByteOffset >= dev->nDataBytesPerChunk)
+                       ok = yaffs_CheckpointFlushBuffer(dev);
+-
+       }
+ 
+-      return  i;
++      return i;
+ }
+ 
+ int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
+ {
+-      int i=0;
++      int i = 0;
+       int ok = 1;
+       yaffs_ExtendedTags tags;
+ 
+@@ -291,52 +281,54 @@ int yaffs_CheckpointRead(yaffs_Device *d
+ 
+       __u8 *dataBytes = (__u8 *)data;
+ 
+-      if(!dev->checkpointBuffer)
++      if (!dev->checkpointBuffer)
+               return 0;
+ 
+-      if(dev->checkpointOpenForWrite)
++      if (dev->checkpointOpenForWrite)
+               return -1;
+ 
+-      while(i < nBytes && ok) {
++      while (i < nBytes && ok) {
+ 
+ 
+-              if(dev->checkpointByteOffset < 0 ||
+-                 dev->checkpointByteOffset >= dev->nDataBytesPerChunk) {
++              if (dev->checkpointByteOffset < 0 ||
++                      dev->checkpointByteOffset >= dev->nDataBytesPerChunk) {
+ 
+-                      if(dev->checkpointCurrentBlock < 0){
++                      if (dev->checkpointCurrentBlock < 0) {
+                               yaffs_CheckpointFindNextCheckpointBlock(dev);
+                               dev->checkpointCurrentChunk = 0;
+                       }
+ 
+-                      if(dev->checkpointCurrentBlock < 0)
++                      if (dev->checkpointCurrentBlock < 0)
+                               ok = 0;
+                       else {
+-
+-                              chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock +
+-                                        dev->checkpointCurrentChunk;
++                              chunk = dev->checkpointCurrentBlock *
++                                      dev->nChunksPerBlock +
++                                      dev->checkpointCurrentChunk;
+ 
+                               realignedChunk = chunk - dev->chunkOffset;
+ 
+-                              /* read in the next chunk */
+-                              /* printf("read checkpoint page %d\n",dev->checkpointPage); */
+-                              dev->readChunkWithTagsFromNAND(dev, realignedChunk,
+-                                                             dev->checkpointBuffer,
+-                                                            &tags);
+-
+-                              if(tags.chunkId != (dev->checkpointPageSequence + 1) ||
+-                                 tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA)
+-                                 ok = 0;
++                              /* read in the next chunk */
++                              /* printf("read checkpoint page %d\n",dev->checkpointPage); */
++                              dev->readChunkWithTagsFromNAND(dev,
++                                              realignedChunk,
++                                              dev->checkpointBuffer,
++                                              &tags);
++
++                              if (tags.chunkId != (dev->checkpointPageSequence + 1) ||
++                                      tags.eccResult > YAFFS_ECC_RESULT_FIXED ||
++                                      tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA)
++                                      ok = 0;
+ 
+                               dev->checkpointByteOffset = 0;
+                               dev->checkpointPageSequence++;
+                               dev->checkpointCurrentChunk++;
+ 
+-                              if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock)
++                              if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock)
+                                       dev->checkpointCurrentBlock = -1;
+                       }
+               }
+ 
+-              if(ok){
++              if (ok) {
+                       *dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset];
+                       dev->checkpointSum += *dataBytes;
+                       dev->checkpointXor ^= *dataBytes;
+@@ -353,17 +345,17 @@ int yaffs_CheckpointRead(yaffs_Device *d
+ int yaffs_CheckpointClose(yaffs_Device *dev)
+ {
+ 
+-      if(dev->checkpointOpenForWrite){
+-              if(dev->checkpointByteOffset != 0)
++      if (dev->checkpointOpenForWrite) {
++              if (dev->checkpointByteOffset != 0)
+                       yaffs_CheckpointFlushBuffer(dev);
+       } else {
+               int i;
+-              for(i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++){
+-                      yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,dev->checkpointBlockList[i]);
+-                      if(bi->blockState == YAFFS_BLOCK_STATE_EMPTY)
++              for (i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++) {
++                      yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointBlockList[i]);
++                      if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY)
+                               bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
+                       else {
+-                              // Todo this looks odd...
++                              /* Todo this looks odd... */
+                       }
+               }
+               YFREE(dev->checkpointBlockList);
+@@ -374,27 +366,25 @@ int yaffs_CheckpointClose(yaffs_Device *
+       dev->nErasedBlocks -= dev->blocksInCheckpoint;
+ 
+ 
+-      T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint byte count %d" TENDSTR),
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint byte count %d" TENDSTR),
+                       dev->checkpointByteCount));
+ 
+-      if(dev->checkpointBuffer){
++      if (dev->checkpointBuffer) {
+               /* free the buffer */
+               YFREE(dev->checkpointBuffer);
+               dev->checkpointBuffer = NULL;
+               return 1;
+-      }
+-      else
++      } else
+               return 0;
+-
+ }
+ 
+ int yaffs_CheckpointInvalidateStream(yaffs_Device *dev)
+ {
+       /* Erase the first checksum block */
+ 
+-      T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint invalidate"TENDSTR)));
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate"TENDSTR)));
+ 
+-      if(!yaffs_CheckpointSpaceOk(dev))
++      if (!yaffs_CheckpointSpaceOk(dev))
+               return 0;
+ 
+       return yaffs_CheckpointErase(dev);
+--- a/fs/yaffs2/yaffs_checkptrw.h
++++ b/fs/yaffs2/yaffs_checkptrw.h
+@@ -20,9 +20,9 @@
+ 
+ int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting);
+ 
+-int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes);
++int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes);
+ 
+-int yaffs_CheckpointRead(yaffs_Device *dev,void *data, int nBytes);
++int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes);
+ 
+ int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum);
+ 
+--- a/fs/yaffs2/yaffs_ecc.c
++++ b/fs/yaffs2/yaffs_ecc.c
+@@ -29,7 +29,7 @@
+  */
+ 
+ const char *yaffs_ecc_c_version =
+-    "$Id: yaffs_ecc.c,v 1.9 2007-02-14 01:09:06 wookey Exp $";
++      "$Id: yaffs_ecc.c,v 1.11 2009-03-06 17:20:50 wookey Exp $";
+ 
+ #include "yportenv.h"
+ 
+@@ -109,12 +109,10 @@ void yaffs_ECCCalculate(const unsigned c
+               b = column_parity_table[*data++];
+               col_parity ^= b;
+ 
+-              if (b & 0x01)   // odd number of bits in the byte
+-              {
++              if (b & 0x01) {         /* odd number of bits in the byte */
+                       line_parity ^= i;
+                       line_parity_prime ^= ~i;
+               }
+-
+       }
+ 
+       ecc[2] = (~col_parity) | 0x03;
+@@ -158,7 +156,7 @@ void yaffs_ECCCalculate(const unsigned c
+       ecc[0] = ~t;
+ 
+ #ifdef CONFIG_YAFFS_ECC_WRONG_ORDER
+-      // Swap the bytes into the wrong order
++      /* Swap the bytes into the wrong order */
+       t = ecc[0];
+       ecc[0] = ecc[1];
+       ecc[1] = t;
+@@ -189,7 +187,7 @@ int yaffs_ECCCorrect(unsigned char *data
+               unsigned bit;
+ 
+ #ifdef CONFIG_YAFFS_ECC_WRONG_ORDER
+-              // swap the bytes to correct for the wrong order
++              /* swap the bytes to correct for the wrong order */
+               unsigned char t;
+ 
+               t = d0;
+@@ -251,7 +249,7 @@ int yaffs_ECCCorrect(unsigned char *data
+  * ECCxxxOther does ECC calcs on arbitrary n bytes of data
+  */
+ void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
+-                           yaffs_ECCOther * eccOther)
++                              yaffs_ECCOther *eccOther)
+ {
+       unsigned int i;
+ 
+@@ -278,8 +276,8 @@ void yaffs_ECCCalculateOther(const unsig
+ }
+ 
+ int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
+-                        yaffs_ECCOther * read_ecc,
+-                        const yaffs_ECCOther * test_ecc)
++                      yaffs_ECCOther *read_ecc,
++                      const yaffs_ECCOther *test_ecc)
+ {
+       unsigned char cDelta;   /* column parity delta */
+       unsigned lDelta;        /* line parity delta */
+@@ -294,8 +292,7 @@ int yaffs_ECCCorrectOther(unsigned char
+               return 0; /* no error */
+ 
+       if (lDelta == ~lDeltaPrime &&
+-          (((cDelta ^ (cDelta >> 1)) & 0x15) == 0x15))
+-      {
++          (((cDelta ^ (cDelta >> 1)) & 0x15) == 0x15)) {
+               /* Single bit (recoverable) error in data */
+ 
+               bit = 0;
+@@ -307,7 +304,7 @@ int yaffs_ECCCorrectOther(unsigned char
+               if (cDelta & 0x02)
+                       bit |= 0x01;
+ 
+-              if(lDelta >= nBytes)
++              if (lDelta >= nBytes)
+                       return -1;
+ 
+               data[lDelta] ^= (1 << bit);
+@@ -316,7 +313,7 @@ int yaffs_ECCCorrectOther(unsigned char
+       }
+ 
+       if ((yaffs_CountBits32(lDelta) + yaffs_CountBits32(lDeltaPrime) +
+-           yaffs_CountBits(cDelta)) == 1) {
++                      yaffs_CountBits(cDelta)) == 1) {
+               /* Reccoverable error in ecc */
+ 
+               *read_ecc = *test_ecc;
+@@ -326,6 +323,4 @@ int yaffs_ECCCorrectOther(unsigned char
+       /* Unrecoverable error */
+ 
+       return -1;
+-
+ }
+-
+--- a/fs/yaffs2/yaffs_ecc.h
++++ b/fs/yaffs2/yaffs_ecc.h
+@@ -13,15 +13,15 @@
+  * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+  */
+ 
+- /*
+-  * This code implements the ECC algorithm used in SmartMedia.
+-  *
+-  * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes.
+-  * The two unused bit are set to 1.
+-  * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC
+-  * blocks are used on a 512-byte NAND page.
+-  *
+-  */
++/*
++ * This code implements the ECC algorithm used in SmartMedia.
++ *
++ * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes.
++ * The two unused bit are set to 1.
++ * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC
++ * blocks are used on a 512-byte NAND page.
++ *
++ */
+ 
+ #ifndef __YAFFS_ECC_H__
+ #define __YAFFS_ECC_H__
+@@ -34,11 +34,11 @@ typedef struct {
+ 
+ void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc);
+ int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
+-                   const unsigned char *test_ecc);
++              const unsigned char *test_ecc);
+ 
+ void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
+-                           yaffs_ECCOther * ecc);
++                      yaffs_ECCOther *ecc);
+ int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
+-                        yaffs_ECCOther * read_ecc,
+-                        const yaffs_ECCOther * test_ecc);
++                      yaffs_ECCOther *read_ecc,
++                      const yaffs_ECCOther *test_ecc);
+ #endif
+--- a/fs/yaffs2/yaffs_fs.c
++++ b/fs/yaffs2/yaffs_fs.c
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2009 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -32,18 +32,17 @@
+  */
+ 
+ const char *yaffs_fs_c_version =
+-    "$Id: yaffs_fs.c,v 1.63 2007-09-19 20:35:40 imcd Exp $";
++    "$Id: yaffs_fs.c,v 1.79 2009-03-17 01:12:00 wookey Exp $";
+ extern const char *yaffs_guts_c_version;
+ 
+ #include <linux/version.h>
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
+ #include <linux/config.h>
+ #endif
+ #include <linux/kernel.h>
+ #include <linux/module.h>
+ #include <linux/slab.h>
+ #include <linux/init.h>
+-#include <linux/list.h>
+ #include <linux/fs.h>
+ #include <linux/proc_fs.h>
+ #include <linux/smp_lock.h>
+@@ -53,10 +52,12 @@ extern const char *yaffs_guts_c_version;
+ #include <linux/string.h>
+ #include <linux/ctype.h>
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#include "asm/div64.h"
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ 
+ #include <linux/statfs.h>     /* Added NCB 15-8-2003 */
+-#include <asm/statfs.h>
++#include <linux/statfs.h>
+ #define UnlockPage(p) unlock_page(p)
+ #define Page_Uptodate(page)   test_bit(PG_uptodate, &(page)->flags)
+ 
+@@ -69,22 +70,45 @@ extern const char *yaffs_guts_c_version;
+ #define       BDEVNAME_SIZE           0
+ #define       yaffs_devname(sb, buf)  kdevname(sb->s_dev)
+ 
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0))
+ /* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */
+ #define __user
+ #endif
+ 
+ #endif
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26))
++#define YPROC_ROOT  (&proc_root)
++#else
++#define YPROC_ROOT  NULL
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ #define WRITE_SIZE_STR "writesize"
+-#define WRITE_SIZE(mtd) (mtd)->writesize
++#define WRITE_SIZE(mtd) ((mtd)->writesize)
+ #else
+ #define WRITE_SIZE_STR "oobblock"
+-#define WRITE_SIZE(mtd) (mtd)->oobblock
++#define WRITE_SIZE(mtd) ((mtd)->oobblock)
+ #endif
+ 
+-#include <asm/uaccess.h>
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27))
++#define YAFFS_USE_WRITE_BEGIN_END 1
++#else
++#define YAFFS_USE_WRITE_BEGIN_END 0
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28))
++static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size)
++{
++      uint64_t result = partition_size;
++      do_div(result, block_size);
++      return (uint32_t)result;
++}
++#else
++#define YCALCBLOCKS(s, b) ((s)/(b))
++#endif
++
++#include <linux/uaccess.h>
+ 
+ #include "yportenv.h"
+ #include "yaffs_guts.h"
+@@ -96,28 +120,44 @@ extern const char *yaffs_guts_c_version;
+ 
+ unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS;
+ unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS;
++unsigned int yaffs_auto_checkpoint = 1;
+ 
+ /* Module Parameters */
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+-module_param(yaffs_traceMask,uint,0644);
+-module_param(yaffs_wr_attempts,uint,0644);
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++module_param(yaffs_traceMask, uint, 0644);
++module_param(yaffs_wr_attempts, uint, 0644);
++module_param(yaffs_auto_checkpoint, uint, 0644);
++#else
++MODULE_PARM(yaffs_traceMask, "i");
++MODULE_PARM(yaffs_wr_attempts, "i");
++MODULE_PARM(yaffs_auto_checkpoint, "i");
++#endif
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25))
++/* use iget and read_inode */
++#define Y_IGET(sb, inum) iget((sb), (inum))
++static void yaffs_read_inode(struct inode *inode);
++
+ #else
+-MODULE_PARM(yaffs_traceMask,"i");
+-MODULE_PARM(yaffs_wr_attempts,"i");
++/* Call local equivalent */
++#define YAFFS_USE_OWN_IGET
++#define Y_IGET(sb, inum) yaffs_iget((sb), (inum))
++
++static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino);
+ #endif
+ 
+ /*#define T(x) printk x */
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
+-#define yaffs_InodeToObjectLV(iptr) (iptr)->i_private
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18))
++#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private)
+ #else
+-#define yaffs_InodeToObjectLV(iptr) (iptr)->u.generic_ip
++#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip)
+ #endif
+ 
+ #define yaffs_InodeToObject(iptr) ((yaffs_Object *)(yaffs_InodeToObjectLV(iptr)))
+ #define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode)
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ #define yaffs_SuperToDevice(sb)       ((yaffs_Device *)sb->s_fs_info)
+ #else
+ #define yaffs_SuperToDevice(sb)       ((yaffs_Device *)sb->u.generic_sbp)
+@@ -126,47 +166,49 @@ MODULE_PARM(yaffs_wr_attempts,"i");
+ static void yaffs_put_super(struct super_block *sb);
+ 
+ static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
+-                              loff_t * pos);
++                              loff_t *pos);
++static ssize_t yaffs_hold_space(struct file *f);
++static void yaffs_release_space(struct file *f);
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ static int yaffs_file_flush(struct file *file, fl_owner_t id);
+ #else
+ static int yaffs_file_flush(struct file *file);
+ #endif
+ 
+ static int yaffs_sync_object(struct file *file, struct dentry *dentry,
+-                           int datasync);
++                              int datasync);
+ 
+ static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir);
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
+                       struct nameidata *n);
+ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
+-                                 struct nameidata *n);
++                                      struct nameidata *n);
+ #else
+ static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode);
+ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry);
+ #endif
+ static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
+-                    struct dentry *dentry);
++                      struct dentry *dentry);
+ static int yaffs_unlink(struct inode *dir, struct dentry *dentry);
+ static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
+-                       const char *symname);
++                      const char *symname);
+ static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode);
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
+-                     dev_t dev);
++                      dev_t dev);
+ #else
+ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
+-                     int dev);
++                      int dev);
+ #endif
+ static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
+                       struct inode *new_dir, struct dentry *new_dentry);
+ static int yaffs_setattr(struct dentry *dentry, struct iattr *attr);
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ static int yaffs_sync_fs(struct super_block *sb, int wait);
+ static void yaffs_write_super(struct super_block *sb);
+ #else
+@@ -174,33 +216,47 @@ static int yaffs_sync_fs(struct super_bl
+ static int yaffs_write_super(struct super_block *sb);
+ #endif
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf);
+-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf);
+ #else
+ static int yaffs_statfs(struct super_block *sb, struct statfs *buf);
+ #endif
+-static void yaffs_read_inode(struct inode *inode);
+ 
++#ifdef YAFFS_HAS_PUT_INODE
+ static void yaffs_put_inode(struct inode *inode);
++#endif
++
+ static void yaffs_delete_inode(struct inode *);
+ static void yaffs_clear_inode(struct inode *);
+ 
+ static int yaffs_readpage(struct file *file, struct page *page);
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs_writepage(struct page *page, struct writeback_control *wbc);
+ #else
+ static int yaffs_writepage(struct page *page);
+ #endif
++
++
++#if (YAFFS_USE_WRITE_BEGIN_END != 0)
++static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
++                              loff_t pos, unsigned len, unsigned flags,
++                              struct page **pagep, void **fsdata);
++static int yaffs_write_end(struct file *filp, struct address_space *mapping,
++                              loff_t pos, unsigned len, unsigned copied,
++                              struct page *pg, void *fsdadata);
++#else
+ static int yaffs_prepare_write(struct file *f, struct page *pg,
+-                             unsigned offset, unsigned to);
++                              unsigned offset, unsigned to);
+ static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
+-                            unsigned to);
++                              unsigned to);
+ 
+-static int yaffs_readlink(struct dentry *dentry, char __user * buffer,
+-                        int buflen);
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
++#endif
++
++static int yaffs_readlink(struct dentry *dentry, char __user *buffer,
++                              int buflen);
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
+ static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
+ #else
+ static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
+@@ -209,12 +265,17 @@ static int yaffs_follow_link(struct dent
+ static struct address_space_operations yaffs_file_address_operations = {
+       .readpage = yaffs_readpage,
+       .writepage = yaffs_writepage,
++#if (YAFFS_USE_WRITE_BEGIN_END > 0)
++      .write_begin = yaffs_write_begin,
++      .write_end = yaffs_write_end,
++#else
+       .prepare_write = yaffs_prepare_write,
+       .commit_write = yaffs_commit_write,
++#endif
+ };
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,22))
+-static struct file_operations yaffs_file_operations = {
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22))
++static const struct file_operations yaffs_file_operations = {
+       .read = do_sync_read,
+       .write = do_sync_write,
+       .aio_read = generic_file_aio_read,
+@@ -224,11 +285,12 @@ static struct file_operations yaffs_file
+       .fsync = yaffs_sync_object,
+       .splice_read = generic_file_splice_read,
+       .splice_write = generic_file_splice_write,
++      .llseek = generic_file_llseek,
+ };
+ 
+-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18))
+ 
+-static struct file_operations yaffs_file_operations = {
++static const struct file_operations yaffs_file_operations = {
+       .read = do_sync_read,
+       .write = do_sync_write,
+       .aio_read = generic_file_aio_read,
+@@ -241,29 +303,29 @@ static struct file_operations yaffs_file
+ 
+ #else
+ 
+-static struct file_operations yaffs_file_operations = {
++static const struct file_operations yaffs_file_operations = {
+       .read = generic_file_read,
+       .write = generic_file_write,
+       .mmap = generic_file_mmap,
+       .flush = yaffs_file_flush,
+       .fsync = yaffs_sync_object,
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+       .sendfile = generic_file_sendfile,
+ #endif
+ };
+ #endif
+ 
+-static struct inode_operations yaffs_file_inode_operations = {
++static const struct inode_operations yaffs_file_inode_operations = {
+       .setattr = yaffs_setattr,
+ };
+ 
+-static struct inode_operations yaffs_symlink_inode_operations = {
++static const struct inode_operations yaffs_symlink_inode_operations = {
+       .readlink = yaffs_readlink,
+       .follow_link = yaffs_follow_link,
+       .setattr = yaffs_setattr,
+ };
+ 
+-static struct inode_operations yaffs_dir_inode_operations = {
++static const struct inode_operations yaffs_dir_inode_operations = {
+       .create = yaffs_create,
+       .lookup = yaffs_lookup,
+       .link = yaffs_link,
+@@ -276,16 +338,21 @@ static struct inode_operations yaffs_dir
+       .setattr = yaffs_setattr,
+ };
+ 
+-static struct file_operations yaffs_dir_operations = {
++static const struct file_operations yaffs_dir_operations = {
+       .read = generic_read_dir,
+       .readdir = yaffs_readdir,
+       .fsync = yaffs_sync_object,
+ };
+ 
+-static struct super_operations yaffs_super_ops = {
++static const struct super_operations yaffs_super_ops = {
+       .statfs = yaffs_statfs,
++
++#ifndef YAFFS_USE_OWN_IGET
+       .read_inode = yaffs_read_inode,
++#endif
++#ifdef YAFFS_HAS_PUT_INODE
+       .put_inode = yaffs_put_inode,
++#endif
+       .put_super = yaffs_put_super,
+       .delete_inode = yaffs_delete_inode,
+       .clear_inode = yaffs_clear_inode,
+@@ -293,22 +360,21 @@ static struct super_operations yaffs_sup
+       .write_super = yaffs_write_super,
+ };
+ 
+-static void yaffs_GrossLock(yaffs_Device * dev)
++static void yaffs_GrossLock(yaffs_Device *dev)
+ {
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs locking\n"));
+-
++      T(YAFFS_TRACE_OS, ("yaffs locking %p\n", current));
+       down(&dev->grossLock);
++      T(YAFFS_TRACE_OS, ("yaffs locked %p\n", current));
+ }
+ 
+-static void yaffs_GrossUnlock(yaffs_Device * dev)
++static void yaffs_GrossUnlock(yaffs_Device *dev)
+ {
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs unlocking\n"));
++      T(YAFFS_TRACE_OS, ("yaffs unlocking %p\n", current));
+       up(&dev->grossLock);
+-
+ }
+ 
+-static int yaffs_readlink(struct dentry *dentry, char __user * buffer,
+-                        int buflen)
++static int yaffs_readlink(struct dentry *dentry, char __user *buffer,
++                      int buflen)
+ {
+       unsigned char *alias;
+       int ret;
+@@ -329,7 +395,7 @@ static int yaffs_readlink(struct dentry
+       return ret;
+ }
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
+ static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
+ #else
+ static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
+@@ -345,32 +411,31 @@ static int yaffs_follow_link(struct dent
+ 
+       yaffs_GrossUnlock(dev);
+ 
+-      if (!alias)
+-        {
++      if (!alias) {
+               ret = -ENOMEM;
+               goto out;
+-        }
++      }
+ 
+       ret = vfs_follow_link(nd, alias);
+       kfree(alias);
+ out:
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
+-      return ERR_PTR (ret);
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
++      return ERR_PTR(ret);
+ #else
+       return ret;
+ #endif
+ }
+ 
+ struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
+-                            yaffs_Object * obj);
++                              yaffs_Object *obj);
+ 
+ /*
+  * Lookup is used to find objects in the fs
+  */
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ 
+ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
+-                                 struct nameidata *n)
++                              struct nameidata *n)
+ #else
+ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry)
+ #endif
+@@ -383,12 +448,11 @@ static struct dentry *yaffs_lookup(struc
+       yaffs_GrossLock(dev);
+ 
+       T(YAFFS_TRACE_OS,
+-        (KERN_DEBUG "yaffs_lookup for %d:%s\n",
+-         yaffs_InodeToObject(dir)->objectId, dentry->d_name.name));
++              ("yaffs_lookup for %d:%s\n",
++              yaffs_InodeToObject(dir)->objectId, dentry->d_name.name));
+ 
+-      obj =
+-          yaffs_FindObjectByName(yaffs_InodeToObject(dir),
+-                                 dentry->d_name.name);
++      obj = yaffs_FindObjectByName(yaffs_InodeToObject(dir),
++                                      dentry->d_name.name);
+ 
+       obj = yaffs_GetEquivalentObject(obj);   /* in case it was a hardlink */
+ 
+@@ -397,13 +461,13 @@ static struct dentry *yaffs_lookup(struc
+ 
+       if (obj) {
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_lookup found %d\n", obj->objectId));
++                      ("yaffs_lookup found %d\n", obj->objectId));
+ 
+               inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
+ 
+               if (inode) {
+                       T(YAFFS_TRACE_OS,
+-                        (KERN_DEBUG "yaffs_loookup dentry \n"));
++                              ("yaffs_loookup dentry \n"));
+ /* #if 0 asserted by NCB for 2.5/6 compatability - falls through to
+  * d_add even if NULL inode */
+ #if 0
+@@ -416,7 +480,7 @@ static struct dentry *yaffs_lookup(struc
+               }
+ 
+       } else {
+-              T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_lookup not found\n"));
++              T(YAFFS_TRACE_OS, ("yaffs_lookup not found\n"));
+ 
+       }
+ 
+@@ -425,20 +489,22 @@ static struct dentry *yaffs_lookup(struc
+       d_add(dentry, inode);
+ 
+       return NULL;
+-      /*      return (ERR_PTR(-EIO)); */
+-
+ }
+ 
++
++#ifdef YAFFS_HAS_PUT_INODE
++
+ /* For now put inode is just for debugging
+  * Put inode is called when the inode **structure** is put.
+  */
+ static void yaffs_put_inode(struct inode *inode)
+ {
+       T(YAFFS_TRACE_OS,
+-        ("yaffs_put_inode: ino %d, count %d\n", (int)inode->i_ino,
+-         atomic_read(&inode->i_count)));
++              ("yaffs_put_inode: ino %d, count %d\n", (int)inode->i_ino,
++              atomic_read(&inode->i_count)));
+ 
+ }
++#endif
+ 
+ /* clear is called to tell the fs to release any per-inode data it holds */
+ static void yaffs_clear_inode(struct inode *inode)
+@@ -449,9 +515,9 @@ static void yaffs_clear_inode(struct ino
+       obj = yaffs_InodeToObject(inode);
+ 
+       T(YAFFS_TRACE_OS,
+-        ("yaffs_clear_inode: ino %d, count %d %s\n", (int)inode->i_ino,
+-         atomic_read(&inode->i_count),
+-         obj ? "object exists" : "null object"));
++              ("yaffs_clear_inode: ino %d, count %d %s\n", (int)inode->i_ino,
++              atomic_read(&inode->i_count),
++              obj ? "object exists" : "null object"));
+ 
+       if (obj) {
+               dev = obj->myDev;
+@@ -486,23 +552,23 @@ static void yaffs_delete_inode(struct in
+       yaffs_Device *dev;
+ 
+       T(YAFFS_TRACE_OS,
+-        ("yaffs_delete_inode: ino %d, count %d %s\n", (int)inode->i_ino,
+-         atomic_read(&inode->i_count),
+-         obj ? "object exists" : "null object"));
++              ("yaffs_delete_inode: ino %d, count %d %s\n", (int)inode->i_ino,
++              atomic_read(&inode->i_count),
++              obj ? "object exists" : "null object"));
+ 
+       if (obj) {
+               dev = obj->myDev;
+               yaffs_GrossLock(dev);
+-              yaffs_DeleteFile(obj);
++              yaffs_DeleteObject(obj);
+               yaffs_GrossUnlock(dev);
+       }
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
+-        truncate_inode_pages (&inode->i_data, 0);
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
++      truncate_inode_pages(&inode->i_data, 0);
+ #endif
+       clear_inode(inode);
+ }
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ static int yaffs_file_flush(struct file *file, fl_owner_t id)
+ #else
+ static int yaffs_file_flush(struct file *file)
+@@ -513,8 +579,8 @@ static int yaffs_file_flush(struct file
+       yaffs_Device *dev = obj->myDev;
+ 
+       T(YAFFS_TRACE_OS,
+-        (KERN_DEBUG "yaffs_file_flush object %d (%s)\n", obj->objectId,
+-         obj->dirty ? "dirty" : "clean"));
++              ("yaffs_file_flush object %d (%s)\n", obj->objectId,
++              obj->dirty ? "dirty" : "clean"));
+ 
+       yaffs_GrossLock(dev);
+ 
+@@ -535,15 +601,15 @@ static int yaffs_readpage_nolock(struct
+ 
+       yaffs_Device *dev;
+ 
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_readpage at %08x, size %08x\n",
+-                         (unsigned)(pg->index << PAGE_CACHE_SHIFT),
+-                         (unsigned)PAGE_CACHE_SIZE));
++      T(YAFFS_TRACE_OS, ("yaffs_readpage at %08x, size %08x\n",
++                      (unsigned)(pg->index << PAGE_CACHE_SHIFT),
++                      (unsigned)PAGE_CACHE_SIZE));
+ 
+       obj = yaffs_DentryToObject(f->f_dentry);
+ 
+       dev = obj->myDev;
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+       BUG_ON(!PageLocked(pg));
+ #else
+       if (!PageLocked(pg))
+@@ -555,9 +621,9 @@ static int yaffs_readpage_nolock(struct
+ 
+       yaffs_GrossLock(dev);
+ 
+-      ret =
+-          yaffs_ReadDataFromFile(obj, pg_buf, pg->index << PAGE_CACHE_SHIFT,
+-                                 PAGE_CACHE_SIZE);
++      ret = yaffs_ReadDataFromFile(obj, pg_buf,
++                              pg->index << PAGE_CACHE_SHIFT,
++                              PAGE_CACHE_SIZE);
+ 
+       yaffs_GrossUnlock(dev);
+ 
+@@ -575,7 +641,7 @@ static int yaffs_readpage_nolock(struct
+       flush_dcache_page(pg);
+       kunmap(pg);
+ 
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_readpage done\n"));
++      T(YAFFS_TRACE_OS, ("yaffs_readpage done\n"));
+       return ret;
+ }
+ 
+@@ -593,7 +659,7 @@ static int yaffs_readpage(struct file *f
+ 
+ /* writepage inspired by/stolen from smbfs */
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs_writepage(struct page *page, struct writeback_control *wbc)
+ #else
+ static int yaffs_writepage(struct page *page)
+@@ -616,12 +682,11 @@ static int yaffs_writepage(struct page *
+ 
+       if (offset > inode->i_size) {
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG
+-                 "yaffs_writepage at %08x, inode size = %08x!!!\n",
+-                 (unsigned)(page->index << PAGE_CACHE_SHIFT),
+-                 (unsigned)inode->i_size));
++                      ("yaffs_writepage at %08x, inode size = %08x!!!\n",
++                      (unsigned)(page->index << PAGE_CACHE_SHIFT),
++                      (unsigned)inode->i_size));
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "                -> don't care!!\n"));
++                      ("                -> don't care!!\n"));
+               unlock_page(page);
+               return 0;
+       }
+@@ -629,11 +694,10 @@ static int yaffs_writepage(struct page *
+       end_index = inode->i_size >> PAGE_CACHE_SHIFT;
+ 
+       /* easy case */
+-      if (page->index < end_index) {
++      if (page->index < end_index)
+               nBytes = PAGE_CACHE_SIZE;
+-      } else {
++      else
+               nBytes = inode->i_size & (PAGE_CACHE_SIZE - 1);
+-      }
+ 
+       get_page(page);
+ 
+@@ -643,19 +707,18 @@ static int yaffs_writepage(struct page *
+       yaffs_GrossLock(obj->myDev);
+ 
+       T(YAFFS_TRACE_OS,
+-        (KERN_DEBUG "yaffs_writepage at %08x, size %08x\n",
+-         (unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes));
++              ("yaffs_writepage at %08x, size %08x\n",
++              (unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes));
+       T(YAFFS_TRACE_OS,
+-        (KERN_DEBUG "writepag0: obj = %05x, ino = %05x\n",
+-         (int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
++              ("writepag0: obj = %05x, ino = %05x\n",
++              (int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
+ 
+-      nWritten =
+-          yaffs_WriteDataToFile(obj, buffer, page->index << PAGE_CACHE_SHIFT,
+-                                nBytes, 0);
++      nWritten = yaffs_WriteDataToFile(obj, buffer,
++                      page->index << PAGE_CACHE_SHIFT, nBytes, 0);
+ 
+       T(YAFFS_TRACE_OS,
+-        (KERN_DEBUG "writepag1: obj = %05x, ino = %05x\n",
+-         (int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
++              ("writepag1: obj = %05x, ino = %05x\n",
++              (int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
+ 
+       yaffs_GrossUnlock(obj->myDev);
+ 
+@@ -667,100 +730,207 @@ static int yaffs_writepage(struct page *
+       return (nWritten == nBytes) ? 0 : -ENOSPC;
+ }
+ 
++
++#if (YAFFS_USE_WRITE_BEGIN_END > 0)
++static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
++                              loff_t pos, unsigned len, unsigned flags,
++                              struct page **pagep, void **fsdata)
++{
++      struct page *pg = NULL;
++      pgoff_t index = pos >> PAGE_CACHE_SHIFT;
++      uint32_t offset = pos & (PAGE_CACHE_SIZE - 1);
++      uint32_t to = offset + len;
++
++      int ret = 0;
++      int space_held = 0;
++
++      T(YAFFS_TRACE_OS, ("start yaffs_write_begin\n"));
++      /* Get a page */
++#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)
++      pg = grab_cache_page_write_begin(mapping, index, flags);
++#else
++      pg = __grab_cache_page(mapping, index);
++#endif
++
++      *pagep = pg;
++      if (!pg) {
++              ret =  -ENOMEM;
++              goto out;
++      }
++      /* Get fs space */
++      space_held = yaffs_hold_space(filp);
++
++      if (!space_held) {
++              ret = -ENOSPC;
++              goto out;
++      }
++
++      /* Update page if required */
++
++      if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE))
++              ret = yaffs_readpage_nolock(filp, pg);
++
++      if (ret)
++              goto out;
++
++      /* Happy path return */
++      T(YAFFS_TRACE_OS, ("end yaffs_write_begin - ok\n"));
++
++      return 0;
++
++out:
++      T(YAFFS_TRACE_OS, ("end yaffs_write_begin fail returning %d\n", ret));
++      if (space_held)
++              yaffs_release_space(filp);
++      if (pg) {
++              unlock_page(pg);
++              page_cache_release(pg);
++      }
++      return ret;
++}
++
++#else
++
+ static int yaffs_prepare_write(struct file *f, struct page *pg,
+-                             unsigned offset, unsigned to)
++                              unsigned offset, unsigned to)
+ {
++      T(YAFFS_TRACE_OS, ("yaffs_prepair_write\n"));
+ 
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_prepair_write\n"));
+       if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE))
+               return yaffs_readpage_nolock(f, pg);
+-
+       return 0;
++}
++#endif
++
++#if (YAFFS_USE_WRITE_BEGIN_END > 0)
++static int yaffs_write_end(struct file *filp, struct address_space *mapping,
++                              loff_t pos, unsigned len, unsigned copied,
++                              struct page *pg, void *fsdadata)
++{
++      int ret = 0;
++      void *addr, *kva;
++      uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE - 1);
++
++      kva = kmap(pg);
++      addr = kva + offset_into_page;
++
++      T(YAFFS_TRACE_OS,
++              ("yaffs_write_end addr %x pos %x nBytes %d\n",
++              (unsigned) addr,
++              (int)pos, copied));
++
++      ret = yaffs_file_write(filp, addr, copied, &pos);
++
++      if (ret != copied) {
++              T(YAFFS_TRACE_OS,
++                      ("yaffs_write_end not same size ret %d  copied %d\n",
++                      ret, copied));
++              SetPageError(pg);
++              ClearPageUptodate(pg);
++      } else {
++              SetPageUptodate(pg);
++      }
++
++      kunmap(pg);
+ 
++      yaffs_release_space(filp);
++      unlock_page(pg);
++      page_cache_release(pg);
++      return ret;
+ }
++#else
+ 
+ static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
+-                            unsigned to)
++                              unsigned to)
+ {
++      void *addr, *kva;
+ 
+-      void *addr = page_address(pg) + offset;
+       loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset;
+       int nBytes = to - offset;
+       int nWritten;
+ 
+       unsigned spos = pos;
+-      unsigned saddr = (unsigned)addr;
++      unsigned saddr;
++
++      kva = kmap(pg);
++      addr = kva + offset;
++
++      saddr = (unsigned) addr;
+ 
+       T(YAFFS_TRACE_OS,
+-        (KERN_DEBUG "yaffs_commit_write addr %x pos %x nBytes %d\n", saddr,
+-         spos, nBytes));
++              ("yaffs_commit_write addr %x pos %x nBytes %d\n",
++              saddr, spos, nBytes));
+ 
+       nWritten = yaffs_file_write(f, addr, nBytes, &pos);
+ 
+       if (nWritten != nBytes) {
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG
+-                 "yaffs_commit_write not same size nWritten %d  nBytes %d\n",
+-                 nWritten, nBytes));
++                      ("yaffs_commit_write not same size nWritten %d  nBytes %d\n",
++                      nWritten, nBytes));
+               SetPageError(pg);
+               ClearPageUptodate(pg);
+       } else {
+               SetPageUptodate(pg);
+       }
+ 
++      kunmap(pg);
++
+       T(YAFFS_TRACE_OS,
+-        (KERN_DEBUG "yaffs_commit_write returning %d\n",
+-         nWritten == nBytes ? 0 : nWritten));
++              ("yaffs_commit_write returning %d\n",
++              nWritten == nBytes ? 0 : nWritten));
+ 
+       return nWritten == nBytes ? 0 : nWritten;
+-
+ }
++#endif
++
+ 
+-static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object * obj)
++static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object *obj)
+ {
+       if (inode && obj) {
+ 
+ 
+               /* Check mode against the variant type and attempt to repair if broken. */
+-              __u32 mode = obj->yst_mode;
+-              switch( obj->variantType ){
+-              case YAFFS_OBJECT_TYPE_FILE :
+-                      if( ! S_ISREG(mode) ){
+-                              obj->yst_mode &= ~S_IFMT;
+-                              obj->yst_mode |= S_IFREG;
+-                      }
+-
+-                      break;
+-              case YAFFS_OBJECT_TYPE_SYMLINK :
+-                      if( ! S_ISLNK(mode) ){
+-                              obj->yst_mode &= ~S_IFMT;
+-                              obj->yst_mode |= S_IFLNK;
+-                      }
+-
+-                      break;
+-              case YAFFS_OBJECT_TYPE_DIRECTORY :
+-                      if( ! S_ISDIR(mode) ){
+-                              obj->yst_mode &= ~S_IFMT;
+-                              obj->yst_mode |= S_IFDIR;
+-                      }
+-
+-                      break;
+-              case YAFFS_OBJECT_TYPE_UNKNOWN :
+-              case YAFFS_OBJECT_TYPE_HARDLINK :
+-              case YAFFS_OBJECT_TYPE_SPECIAL :
+-              default:
+-                      /* TODO? */
+-                      break;
+-              }
++              __u32 mode = obj->yst_mode;
++              switch (obj->variantType) {
++              case YAFFS_OBJECT_TYPE_FILE:
++                      if (!S_ISREG(mode)) {
++                              obj->yst_mode &= ~S_IFMT;
++                              obj->yst_mode |= S_IFREG;
++                      }
++
++                      break;
++              case YAFFS_OBJECT_TYPE_SYMLINK:
++                      if (!S_ISLNK(mode)) {
++                              obj->yst_mode &= ~S_IFMT;
++                              obj->yst_mode |= S_IFLNK;
++                      }
++
++                      break;
++              case YAFFS_OBJECT_TYPE_DIRECTORY:
++                      if (!S_ISDIR(mode)) {
++                              obj->yst_mode &= ~S_IFMT;
++                              obj->yst_mode |= S_IFDIR;
++                      }
++
++                      break;
++              case YAFFS_OBJECT_TYPE_UNKNOWN:
++              case YAFFS_OBJECT_TYPE_HARDLINK:
++              case YAFFS_OBJECT_TYPE_SPECIAL:
++              default:
++                      /* TODO? */
++                      break;
++              }
++
++              inode->i_flags |= S_NOATIME;
+ 
+               inode->i_ino = obj->objectId;
+               inode->i_mode = obj->yst_mode;
+               inode->i_uid = obj->yst_uid;
+               inode->i_gid = obj->yst_gid;
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
+               inode->i_blksize = inode->i_sb->s_blocksize;
+ #endif
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ 
+               inode->i_rdev = old_decode_dev(obj->yst_rdev);
+               inode->i_atime.tv_sec = (time_t) (obj->yst_atime);
+@@ -781,26 +951,25 @@ static void yaffs_FillInodeFromObject(st
+               inode->i_nlink = yaffs_GetObjectLinkCount(obj);
+ 
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG
+-                 "yaffs_FillInode mode %x uid %d gid %d size %d count %d\n",
+-                 inode->i_mode, inode->i_uid, inode->i_gid,
+-                 (int)inode->i_size, atomic_read(&inode->i_count)));
++                      ("yaffs_FillInode mode %x uid %d gid %d size %d count %d\n",
++                      inode->i_mode, inode->i_uid, inode->i_gid,
++                      (int)inode->i_size, atomic_read(&inode->i_count)));
+ 
+               switch (obj->yst_mode & S_IFMT) {
+               default:        /* fifo, device or socket */
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+                       init_special_inode(inode, obj->yst_mode,
+-                                         old_decode_dev(obj->yst_rdev));
++                                      old_decode_dev(obj->yst_rdev));
+ #else
+                       init_special_inode(inode, obj->yst_mode,
+-                                         (dev_t) (obj->yst_rdev));
++                                      (dev_t) (obj->yst_rdev));
+ #endif
+                       break;
+               case S_IFREG:   /* file */
+                       inode->i_op = &yaffs_file_inode_operations;
+                       inode->i_fop = &yaffs_file_operations;
+                       inode->i_mapping->a_ops =
+-                          &yaffs_file_address_operations;
++                              &yaffs_file_address_operations;
+                       break;
+               case S_IFDIR:   /* directory */
+                       inode->i_op = &yaffs_dir_inode_operations;
+@@ -817,34 +986,36 @@ static void yaffs_FillInodeFromObject(st
+ 
+       } else {
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_FileInode invalid parameters\n"));
++                      ("yaffs_FileInode invalid parameters\n"));
+       }
+ 
+ }
+ 
+ struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
+-                            yaffs_Object * obj)
++                              yaffs_Object *obj)
+ {
+       struct inode *inode;
+ 
+       if (!sb) {
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_get_inode for NULL super_block!!\n"));
++                      ("yaffs_get_inode for NULL super_block!!\n"));
+               return NULL;
+ 
+       }
+ 
+       if (!obj) {
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_get_inode for NULL object!!\n"));
++                      ("yaffs_get_inode for NULL object!!\n"));
+               return NULL;
+ 
+       }
+ 
+       T(YAFFS_TRACE_OS,
+-        (KERN_DEBUG "yaffs_get_inode for object %d\n", obj->objectId));
++              ("yaffs_get_inode for object %d\n", obj->objectId));
+ 
+-      inode = iget(sb, obj->objectId);
++      inode = Y_IGET(sb, obj->objectId);
++      if (IS_ERR(inode))
++              return NULL;
+ 
+       /* NB Side effect: iget calls back to yaffs_read_inode(). */
+       /* iget also increments the inode's i_count */
+@@ -854,7 +1025,7 @@ struct inode *yaffs_get_inode(struct sup
+ }
+ 
+ static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
+-                              loff_t * pos)
++                              loff_t *pos)
+ {
+       yaffs_Object *obj;
+       int nWritten, ipos;
+@@ -869,28 +1040,26 @@ static ssize_t yaffs_file_write(struct f
+ 
+       inode = f->f_dentry->d_inode;
+ 
+-      if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) {
++      if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND)
+               ipos = inode->i_size;
+-      } else {
++      else
+               ipos = *pos;
+-      }
+ 
+-      if (!obj) {
++      if (!obj)
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_file_write: hey obj is null!\n"));
+-      } else {
++                      ("yaffs_file_write: hey obj is null!\n"));
++      else
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG
+-                 "yaffs_file_write about to write writing %d bytes"
+-                 "to object %d at %d\n",
+-                 n, obj->objectId, ipos));
+-      }
++                      ("yaffs_file_write about to write writing %zu bytes"
++                      "to object %d at %d\n",
++                      n, obj->objectId, ipos));
+ 
+       nWritten = yaffs_WriteDataToFile(obj, buf, ipos, n, 0);
+ 
+       T(YAFFS_TRACE_OS,
+-        (KERN_DEBUG "yaffs_file_write writing %d bytes, %d written at %d\n",
+-         n, nWritten, ipos));
++              ("yaffs_file_write writing %zu bytes, %d written at %d\n",
++              n, nWritten, ipos));
++
+       if (nWritten > 0) {
+               ipos += nWritten;
+               *pos = ipos;
+@@ -899,10 +1068,9 @@ static ssize_t yaffs_file_write(struct f
+                       inode->i_blocks = (ipos + 511) >> 9;
+ 
+                       T(YAFFS_TRACE_OS,
+-                        (KERN_DEBUG
+-                         "yaffs_file_write size updated to %d bytes, "
+-                         "%d blocks\n",
+-                         ipos, (int)(inode->i_blocks)));
++                              ("yaffs_file_write size updated to %d bytes, "
++                              "%d blocks\n",
++                              ipos, (int)(inode->i_blocks)));
+               }
+ 
+       }
+@@ -910,13 +1078,54 @@ static ssize_t yaffs_file_write(struct f
+       return nWritten == 0 ? -ENOSPC : nWritten;
+ }
+ 
++/* Space holding and freeing is done to ensure we have space available for write_begin/end */
++/* For now we just assume few parallel writes and check against a small number. */
++/* Todo: need to do this with a counter to handle parallel reads better */
++
++static ssize_t yaffs_hold_space(struct file *f)
++{
++      yaffs_Object *obj;
++      yaffs_Device *dev;
++
++      int nFreeChunks;
++
++
++      obj = yaffs_DentryToObject(f->f_dentry);
++
++      dev = obj->myDev;
++
++      yaffs_GrossLock(dev);
++
++      nFreeChunks = yaffs_GetNumberOfFreeChunks(dev);
++
++      yaffs_GrossUnlock(dev);
++
++      return (nFreeChunks > 20) ? 1 : 0;
++}
++
++static void yaffs_release_space(struct file *f)
++{
++      yaffs_Object *obj;
++      yaffs_Device *dev;
++
++
++      obj = yaffs_DentryToObject(f->f_dentry);
++
++      dev = obj->myDev;
++
++      yaffs_GrossLock(dev);
++
++
++      yaffs_GrossUnlock(dev);
++}
++
+ static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)
+ {
+       yaffs_Object *obj;
+       yaffs_Device *dev;
+       struct inode *inode = f->f_dentry->d_inode;
+       unsigned long offset, curoffs;
+-      struct list_head *i;
++      struct ylist_head *i;
+       yaffs_Object *l;
+ 
+       char name[YAFFS_MAX_NAME_LENGTH + 1];
+@@ -932,24 +1141,20 @@ static int yaffs_readdir(struct file *f,
+ 
+       if (offset == 0) {
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_readdir: entry . ino %d \n",
+-                 (int)inode->i_ino));
+-              if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR)
+-                  < 0) {
++                      ("yaffs_readdir: entry . ino %d \n",
++                      (int)inode->i_ino));
++              if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0)
+                       goto out;
+-              }
+               offset++;
+               f->f_pos++;
+       }
+       if (offset == 1) {
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_readdir: entry .. ino %d \n",
+-                 (int)f->f_dentry->d_parent->d_inode->i_ino));
+-              if (filldir
+-                  (dirent, "..", 2, offset,
+-                   f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) {
++                      ("yaffs_readdir: entry .. ino %d \n",
++                      (int)f->f_dentry->d_parent->d_inode->i_ino));
++              if (filldir(dirent, "..", 2, offset,
++                      f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0)
+                       goto out;
+-              }
+               offset++;
+               f->f_pos++;
+       }
+@@ -965,35 +1170,32 @@ static int yaffs_readdir(struct file *f,
+               f->f_version = inode->i_version;
+       }
+ 
+-      list_for_each(i, &obj->variant.directoryVariant.children) {
++      ylist_for_each(i, &obj->variant.directoryVariant.children) {
+               curoffs++;
+               if (curoffs >= offset) {
+-                      l = list_entry(i, yaffs_Object, siblings);
++                      l = ylist_entry(i, yaffs_Object, siblings);
+ 
+                       yaffs_GetObjectName(l, name,
+                                           YAFFS_MAX_NAME_LENGTH + 1);
+                       T(YAFFS_TRACE_OS,
+-                        (KERN_DEBUG "yaffs_readdir: %s inode %d\n", name,
++                        ("yaffs_readdir: %s inode %d\n", name,
+                          yaffs_GetObjectInode(l)));
+ 
+                       if (filldir(dirent,
+-                                  name,
+-                                  strlen(name),
+-                                  offset,
+-                                  yaffs_GetObjectInode(l),
+-                                  yaffs_GetObjectType(l))
+-                          < 0) {
++                                      name,
++                                      strlen(name),
++                                      offset,
++                                      yaffs_GetObjectInode(l),
++                                      yaffs_GetObjectType(l)) < 0)
+                               goto up_and_out;
+-                      }
+ 
+                       offset++;
+                       f->f_pos++;
+               }
+       }
+ 
+-      up_and_out:
+-      out:
+-
++up_and_out:
++out:
+       yaffs_GrossUnlock(dev);
+ 
+       return 0;
+@@ -1002,12 +1204,19 @@ static int yaffs_readdir(struct file *f,
+ /*
+  * File creation. Allocate an inode, and we're done..
+  */
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
++#define YCRED(x) x
++#else
++#define YCRED(x) (x->cred)
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
+-                     dev_t rdev)
++                      dev_t rdev)
+ #else
+ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
+-                     int rdev)
++                      int rdev)
+ #endif
+ {
+       struct inode *inode;
+@@ -1018,25 +1227,25 @@ static int yaffs_mknod(struct inode *dir
+       yaffs_Object *parent = yaffs_InodeToObject(dir);
+ 
+       int error = -ENOSPC;
+-      uid_t uid = current->fsuid;
+-      gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
++      uid_t uid = YCRED(current)->fsuid;
++      gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
+ 
+-      if((dir->i_mode & S_ISGID) && S_ISDIR(mode))
++      if ((dir->i_mode & S_ISGID) && S_ISDIR(mode))
+               mode |= S_ISGID;
+ 
+       if (parent) {
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_mknod: parent object %d type %d\n",
+-                 parent->objectId, parent->variantType));
++                      ("yaffs_mknod: parent object %d type %d\n",
++                      parent->objectId, parent->variantType));
+       } else {
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_mknod: could not get parent object\n"));
++                      ("yaffs_mknod: could not get parent object\n"));
+               return -EPERM;
+       }
+ 
+       T(YAFFS_TRACE_OS, ("yaffs_mknod: making oject for %s, "
+-                         "mode %x dev %x\n",
+-                         dentry->d_name.name, mode, rdev));
++                      "mode %x dev %x\n",
++                      dentry->d_name.name, mode, rdev));
+ 
+       dev = parent->myDev;
+ 
+@@ -1045,33 +1254,28 @@ static int yaffs_mknod(struct inode *dir
+       switch (mode & S_IFMT) {
+       default:
+               /* Special (socket, fifo, device...) */
+-              T(YAFFS_TRACE_OS, (KERN_DEBUG
+-                                 "yaffs_mknod: making special\n"));
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+-              obj =
+-                  yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
+-                                     gid, old_encode_dev(rdev));
+-#else
+-              obj =
+-                  yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
+-                                     gid, rdev);
++              T(YAFFS_TRACE_OS, ("yaffs_mknod: making special\n"));
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++              obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
++                              gid, old_encode_dev(rdev));
++#else
++              obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
++                              gid, rdev);
+ #endif
+               break;
+       case S_IFREG:           /* file          */
+-              T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mknod: making file\n"));
+-              obj =
+-                  yaffs_MknodFile(parent, dentry->d_name.name, mode, uid,
+-                                  gid);
++              T(YAFFS_TRACE_OS, ("yaffs_mknod: making file\n"));
++              obj = yaffs_MknodFile(parent, dentry->d_name.name, mode, uid,
++                              gid);
+               break;
+       case S_IFDIR:           /* directory */
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_mknod: making directory\n"));
+-              obj =
+-                  yaffs_MknodDirectory(parent, dentry->d_name.name, mode,
+-                                       uid, gid);
++                      ("yaffs_mknod: making directory\n"));
++              obj = yaffs_MknodDirectory(parent, dentry->d_name.name, mode,
++                                      uid, gid);
+               break;
+       case S_IFLNK:           /* symlink */
+-              T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mknod: making file\n"));
++              T(YAFFS_TRACE_OS, ("yaffs_mknod: making symlink\n"));
+               obj = NULL;     /* Do we ever get here? */
+               break;
+       }
+@@ -1083,12 +1287,12 @@ static int yaffs_mknod(struct inode *dir
+               inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj);
+               d_instantiate(dentry, inode);
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_mknod created object %d count = %d\n",
+-                 obj->objectId, atomic_read(&inode->i_count)));
++                      ("yaffs_mknod created object %d count = %d\n",
++                      obj->objectId, atomic_read(&inode->i_count)));
+               error = 0;
+       } else {
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_mknod failed making object\n"));
++                      ("yaffs_mknod failed making object\n"));
+               error = -ENOMEM;
+       }
+ 
+@@ -1098,25 +1302,19 @@ static int yaffs_mknod(struct inode *dir
+ static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
+ {
+       int retVal;
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mkdir\n"));
++      T(YAFFS_TRACE_OS, ("yaffs_mkdir\n"));
+       retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0);
+-#if 0
+-      /* attempt to fix dir bug - didn't work */
+-      if (!retVal) {
+-              dget(dentry);
+-      }
+-#endif
+       return retVal;
+ }
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
+                       struct nameidata *n)
+ #else
+ static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode)
+ #endif
+ {
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_create\n"));
++      T(YAFFS_TRACE_OS, ("yaffs_create\n"));
+       return yaffs_mknod(dir, dentry, mode | S_IFREG, 0);
+ }
+ 
+@@ -1127,8 +1325,8 @@ static int yaffs_unlink(struct inode *di
+       yaffs_Device *dev;
+ 
+       T(YAFFS_TRACE_OS,
+-        (KERN_DEBUG "yaffs_unlink %d:%s\n", (int)(dir->i_ino),
+-         dentry->d_name.name));
++              ("yaffs_unlink %d:%s\n", (int)(dir->i_ino),
++              dentry->d_name.name));
+ 
+       dev = yaffs_InodeToObject(dir)->myDev;
+ 
+@@ -1151,82 +1349,74 @@ static int yaffs_unlink(struct inode *di
+  * Create a link...
+  */
+ static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
+-                    struct dentry *dentry)
++                      struct dentry *dentry)
+ {
+       struct inode *inode = old_dentry->d_inode;
+       yaffs_Object *obj = NULL;
+       yaffs_Object *link = NULL;
+       yaffs_Device *dev;
+ 
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_link\n"));
++      T(YAFFS_TRACE_OS, ("yaffs_link\n"));
+ 
+       obj = yaffs_InodeToObject(inode);
+       dev = obj->myDev;
+ 
+       yaffs_GrossLock(dev);
+ 
+-      if (!S_ISDIR(inode->i_mode))    /* Don't link directories */
+-      {
+-              link =
+-                  yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name,
+-                             obj);
+-      }
++      if (!S_ISDIR(inode->i_mode))            /* Don't link directories */
++              link = yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name,
++                      obj);
+ 
+       if (link) {
+               old_dentry->d_inode->i_nlink = yaffs_GetObjectLinkCount(obj);
+               d_instantiate(dentry, old_dentry->d_inode);
+               atomic_inc(&old_dentry->d_inode->i_count);
+               T(YAFFS_TRACE_OS,
+-                (KERN_DEBUG "yaffs_link link count %d i_count %d\n",
+-                 old_dentry->d_inode->i_nlink,
+-                 atomic_read(&old_dentry->d_inode->i_count)));
+-
++                      ("yaffs_link link count %d i_count %d\n",
++                      old_dentry->d_inode->i_nlink,
++                      atomic_read(&old_dentry->d_inode->i_count)));
+       }
+ 
+       yaffs_GrossUnlock(dev);
+ 
+-      if (link) {
+-
++      if (link)
+               return 0;
+-      }
+ 
+       return -EPERM;
+ }
+ 
+ static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
+-                       const char *symname)
++                              const char *symname)
+ {
+       yaffs_Object *obj;
+       yaffs_Device *dev;
+-      uid_t uid = current->fsuid;
+-      gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
++      uid_t uid = YCRED(current)->fsuid;
++      gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
+ 
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_symlink\n"));
++      T(YAFFS_TRACE_OS, ("yaffs_symlink\n"));
+ 
+       dev = yaffs_InodeToObject(dir)->myDev;
+       yaffs_GrossLock(dev);
+       obj = yaffs_MknodSymLink(yaffs_InodeToObject(dir), dentry->d_name.name,
+-                               S_IFLNK | S_IRWXUGO, uid, gid, symname);
++                              S_IFLNK | S_IRWXUGO, uid, gid, symname);
+       yaffs_GrossUnlock(dev);
+ 
+       if (obj) {
+-
+               struct inode *inode;
+ 
+               inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
+               d_instantiate(dentry, inode);
+-              T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink created OK\n"));
++              T(YAFFS_TRACE_OS, ("symlink created OK\n"));
+               return 0;
+       } else {
+-              T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink not created\n"));
+-
++              T(YAFFS_TRACE_OS, ("symlink not created\n"));
+       }
+ 
+       return -ENOMEM;
+ }
+ 
+ static int yaffs_sync_object(struct file *file, struct dentry *dentry,
+-                           int datasync)
++                              int datasync)
+ {
+ 
+       yaffs_Object *obj;
+@@ -1236,7 +1426,7 @@ static int yaffs_sync_object(struct file
+ 
+       dev = obj->myDev;
+ 
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_object\n"));
++      T(YAFFS_TRACE_OS, ("yaffs_sync_object\n"));
+       yaffs_GrossLock(dev);
+       yaffs_FlushFile(obj, 1);
+       yaffs_GrossUnlock(dev);
+@@ -1255,41 +1445,36 @@ static int yaffs_rename(struct inode *ol
+       int retVal = YAFFS_FAIL;
+       yaffs_Object *target;
+ 
+-        T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_rename\n"));
++      T(YAFFS_TRACE_OS, ("yaffs_rename\n"));
+       dev = yaffs_InodeToObject(old_dir)->myDev;
+ 
+       yaffs_GrossLock(dev);
+ 
+       /* Check if the target is an existing directory that is not empty. */
+-      target =
+-          yaffs_FindObjectByName(yaffs_InodeToObject(new_dir),
+-                                 new_dentry->d_name.name);
++      target = yaffs_FindObjectByName(yaffs_InodeToObject(new_dir),
++                              new_dentry->d_name.name);
+ 
+ 
+ 
+-      if (target &&
+-          target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
+-          !list_empty(&target->variant.directoryVariant.children)) {
++      if (target && target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
++              !ylist_empty(&target->variant.directoryVariant.children)) {
+ 
+-              T(YAFFS_TRACE_OS, (KERN_DEBUG "target is non-empty dir\n"));
++              T(YAFFS_TRACE_OS, ("target is non-empty dir\n"));
+ 
+               retVal = YAFFS_FAIL;
+       } else {
+-
+               /* Now does unlinking internally using shadowing mechanism */
+-              T(YAFFS_TRACE_OS, (KERN_DEBUG "calling yaffs_RenameObject\n"));
+-
+-              retVal =
+-                  yaffs_RenameObject(yaffs_InodeToObject(old_dir),
+-                                     old_dentry->d_name.name,
+-                                     yaffs_InodeToObject(new_dir),
+-                                     new_dentry->d_name.name);
++              T(YAFFS_TRACE_OS, ("calling yaffs_RenameObject\n"));
+ 
++              retVal = yaffs_RenameObject(yaffs_InodeToObject(old_dir),
++                              old_dentry->d_name.name,
++                              yaffs_InodeToObject(new_dir),
++                              new_dentry->d_name.name);
+       }
+       yaffs_GrossUnlock(dev);
+ 
+       if (retVal == YAFFS_OK) {
+-              if(target) {
++              if (target) {
+                       new_dentry->d_inode->i_nlink--;
+                       mark_inode_dirty(new_dentry->d_inode);
+               }
+@@ -1298,7 +1483,6 @@ static int yaffs_rename(struct inode *ol
+       } else {
+               return -ENOTEMPTY;
+       }
+-
+ }
+ 
+ static int yaffs_setattr(struct dentry *dentry, struct iattr *attr)
+@@ -1308,15 +1492,15 @@ static int yaffs_setattr(struct dentry *
+       yaffs_Device *dev;
+ 
+       T(YAFFS_TRACE_OS,
+-        (KERN_DEBUG "yaffs_setattr of object %d\n",
+-         yaffs_InodeToObject(inode)->objectId));
+-
+-      if ((error = inode_change_ok(inode, attr)) == 0) {
++              ("yaffs_setattr of object %d\n",
++              yaffs_InodeToObject(inode)->objectId));
+ 
++      error = inode_change_ok(inode, attr);
++      if (error == 0) {
+               dev = yaffs_InodeToObject(inode)->myDev;
+               yaffs_GrossLock(dev);
+               if (yaffs_SetAttributes(yaffs_InodeToObject(inode), attr) ==
+-                  YAFFS_OK) {
++                              YAFFS_OK) {
+                       error = 0;
+               } else {
+                       error = -EPERM;
+@@ -1328,12 +1512,12 @@ static int yaffs_setattr(struct dentry *
+       return error;
+ }
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf)
+ {
+       yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev;
+       struct super_block *sb = dentry->d_sb;
+-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf)
+ {
+       yaffs_Device *dev = yaffs_SuperToDevice(sb);
+@@ -1343,32 +1527,53 @@ static int yaffs_statfs(struct super_blo
+       yaffs_Device *dev = yaffs_SuperToDevice(sb);
+ #endif
+ 
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_statfs\n"));
++      T(YAFFS_TRACE_OS, ("yaffs_statfs\n"));
+ 
+       yaffs_GrossLock(dev);
+ 
+       buf->f_type = YAFFS_MAGIC;
+       buf->f_bsize = sb->s_blocksize;
+       buf->f_namelen = 255;
+-      if (sb->s_blocksize > dev->nDataBytesPerChunk) {
++
++      if (dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)) {
++              /* Do this if chunk size is not a power of 2 */
++
++              uint64_t bytesInDev;
++              uint64_t bytesFree;
++
++              bytesInDev = ((uint64_t)((dev->endBlock - dev->startBlock + 1))) *
++                      ((uint64_t)(dev->nChunksPerBlock * dev->nDataBytesPerChunk));
++
++              do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */
++              buf->f_blocks = bytesInDev;
++
++              bytesFree  = ((uint64_t)(yaffs_GetNumberOfFreeChunks(dev))) *
++                      ((uint64_t)(dev->nDataBytesPerChunk));
++
++              do_div(bytesFree, sb->s_blocksize);
++
++              buf->f_bfree = bytesFree;
++
++      } else if (sb->s_blocksize > dev->nDataBytesPerChunk) {
+ 
+               buf->f_blocks =
+-                  (dev->endBlock - dev->startBlock +
+-                   1) * dev->nChunksPerBlock / (sb->s_blocksize /
+-                                                dev->nDataBytesPerChunk);
++                      (dev->endBlock - dev->startBlock + 1) *
++                      dev->nChunksPerBlock /
++                      (sb->s_blocksize / dev->nDataBytesPerChunk);
+               buf->f_bfree =
+-                  yaffs_GetNumberOfFreeChunks(dev) / (sb->s_blocksize /
+-                                                      dev->nDataBytesPerChunk);
++                      yaffs_GetNumberOfFreeChunks(dev) /
++                      (sb->s_blocksize / dev->nDataBytesPerChunk);
+       } else {
+-
+               buf->f_blocks =
+-                  (dev->endBlock - dev->startBlock +
+-                   1) * dev->nChunksPerBlock * (dev->nDataBytesPerChunk /
+-                                                sb->s_blocksize);
++                      (dev->endBlock - dev->startBlock + 1) *
++                      dev->nChunksPerBlock *
++                      (dev->nDataBytesPerChunk / sb->s_blocksize);
++
+               buf->f_bfree =
+-                  yaffs_GetNumberOfFreeChunks(dev) * (dev->nDataBytesPerChunk /
+-                                                      sb->s_blocksize);
++                      yaffs_GetNumberOfFreeChunks(dev) *
++                      (dev->nDataBytesPerChunk / sb->s_blocksize);
+       }
++
+       buf->f_files = 0;
+       buf->f_ffree = 0;
+       buf->f_bavail = buf->f_bfree;
+@@ -1378,18 +1583,19 @@ static int yaffs_statfs(struct super_blo
+ }
+ 
+ 
+-/**
+ static int yaffs_do_sync_fs(struct super_block *sb)
+ {
+ 
+       yaffs_Device *dev = yaffs_SuperToDevice(sb);
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_do_sync_fs\n"));
++      T(YAFFS_TRACE_OS, ("yaffs_do_sync_fs\n"));
+ 
+-      if(sb->s_dirt) {
++      if (sb->s_dirt) {
+               yaffs_GrossLock(dev);
+ 
+-              if(dev)
++              if (dev) {
++                      yaffs_FlushEntireDeviceCache(dev);
+                       yaffs_CheckpointSave(dev);
++              }
+ 
+               yaffs_GrossUnlock(dev);
+ 
+@@ -1397,35 +1603,73 @@ static int yaffs_do_sync_fs(struct super
+       }
+       return 0;
+ }
+-**/
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ static void yaffs_write_super(struct super_block *sb)
+ #else
+ static int yaffs_write_super(struct super_block *sb)
+ #endif
+ {
+ 
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_write_super\n"));
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
+-      return 0; /* yaffs_do_sync_fs(sb);*/
++      T(YAFFS_TRACE_OS, ("yaffs_write_super\n"));
++      if (yaffs_auto_checkpoint >= 2)
++              yaffs_do_sync_fs(sb);
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18))
++      return 0;
+ #endif
+ }
+ 
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ static int yaffs_sync_fs(struct super_block *sb, int wait)
+ #else
+ static int yaffs_sync_fs(struct super_block *sb)
+ #endif
+ {
++      T(YAFFS_TRACE_OS, ("yaffs_sync_fs\n"));
++
++      if (yaffs_auto_checkpoint >= 1)
++              yaffs_do_sync_fs(sb);
++
++      return 0;
++}
++
++#ifdef YAFFS_USE_OWN_IGET
++
++static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino)
++{
++      struct inode *inode;
++      yaffs_Object *obj;
++      yaffs_Device *dev = yaffs_SuperToDevice(sb);
++
++      T(YAFFS_TRACE_OS,
++              ("yaffs_iget for %lu\n", ino));
+ 
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_fs\n"));
++      inode = iget_locked(sb, ino);
++      if (!inode)
++              return ERR_PTR(-ENOMEM);
++      if (!(inode->i_state & I_NEW))
++              return inode;
++
++      /* NB This is called as a side effect of other functions, but
++       * we had to release the lock to prevent deadlocks, so
++       * need to lock again.
++       */
+ 
+-      return 0; /* yaffs_do_sync_fs(sb);*/
++      yaffs_GrossLock(dev);
+ 
++      obj = yaffs_FindObjectByNumber(dev, inode->i_ino);
++
++      yaffs_FillInodeFromObject(inode, obj);
++
++      yaffs_GrossUnlock(dev);
++
++      unlock_new_inode(inode);
++      return inode;
+ }
+ 
++#else
+ 
+ static void yaffs_read_inode(struct inode *inode)
+ {
+@@ -1438,7 +1682,7 @@ static void yaffs_read_inode(struct inod
+       yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb);
+ 
+       T(YAFFS_TRACE_OS,
+-        (KERN_DEBUG "yaffs_read_inode for %d\n", (int)inode->i_ino));
++              ("yaffs_read_inode for %d\n", (int)inode->i_ino));
+ 
+       yaffs_GrossLock(dev);
+ 
+@@ -1449,18 +1693,20 @@ static void yaffs_read_inode(struct inod
+       yaffs_GrossUnlock(dev);
+ }
+ 
+-static LIST_HEAD(yaffs_dev_list);
++#endif
++
++static YLIST_HEAD(yaffs_dev_list);
+ 
+-#if 0 // not used
++#if 0 /* not used */
+ static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data)
+ {
+       yaffs_Device    *dev = yaffs_SuperToDevice(sb);
+ 
+-      if( *flags & MS_RDONLY ) {
++      if (*flags & MS_RDONLY) {
+               struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice;
+ 
+               T(YAFFS_TRACE_OS,
+-                      (KERN_DEBUG "yaffs_remount_fs: %s: RO\n", dev->name ));
++                      ("yaffs_remount_fs: %s: RO\n", dev->name));
+ 
+               yaffs_GrossLock(dev);
+ 
+@@ -1472,10 +1718,9 @@ static int yaffs_remount_fs(struct super
+                       mtd->sync(mtd);
+ 
+               yaffs_GrossUnlock(dev);
+-      }
+-      else {
++      } else {
+               T(YAFFS_TRACE_OS,
+-                      (KERN_DEBUG "yaffs_remount_fs: %s: RW\n", dev->name ));
++                      ("yaffs_remount_fs: %s: RW\n", dev->name));
+       }
+ 
+       return 0;
+@@ -1486,7 +1731,7 @@ static void yaffs_put_super(struct super
+ {
+       yaffs_Device *dev = yaffs_SuperToDevice(sb);
+ 
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_put_super\n"));
++      T(YAFFS_TRACE_OS, ("yaffs_put_super\n"));
+ 
+       yaffs_GrossLock(dev);
+ 
+@@ -1494,18 +1739,17 @@ static void yaffs_put_super(struct super
+ 
+       yaffs_CheckpointSave(dev);
+ 
+-      if (dev->putSuperFunc) {
++      if (dev->putSuperFunc)
+               dev->putSuperFunc(sb);
+-      }
+ 
+       yaffs_Deinitialise(dev);
+ 
+       yaffs_GrossUnlock(dev);
+ 
+       /* we assume this is protected by lock_kernel() in mount/umount */
+-      list_del(&dev->devList);
++      ylist_del(&dev->devList);
+ 
+-      if(dev->spareBuffer){
++      if (dev->spareBuffer) {
+               YFREE(dev->spareBuffer);
+               dev->spareBuffer = NULL;
+       }
+@@ -1516,12 +1760,10 @@ static void yaffs_put_super(struct super
+ 
+ static void yaffs_MTDPutSuper(struct super_block *sb)
+ {
+-
+       struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice;
+ 
+-      if (mtd->sync) {
++      if (mtd->sync)
+               mtd->sync(mtd);
+-      }
+ 
+       put_mtd_device(mtd);
+ }
+@@ -1531,9 +1773,9 @@ static void yaffs_MarkSuperBlockDirty(vo
+ {
+       struct super_block *sb = (struct super_block *)vsb;
+ 
+-      T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_MarkSuperBlockDirty() sb = %p\n",sb));
+-//    if(sb)
+-//            sb->s_dirt = 1;
++      T(YAFFS_TRACE_OS, ("yaffs_MarkSuperBlockDirty() sb = %p\n", sb));
++      if (sb)
++              sb->s_dirt = 1;
+ }
+ 
+ typedef struct {
+@@ -1546,48 +1788,48 @@ typedef struct {
+ #define MAX_OPT_LEN 20
+ static int yaffs_parse_options(yaffs_options *options, const char *options_str)
+ {
+-      char cur_opt[MAX_OPT_LEN+1];
++      char cur_opt[MAX_OPT_LEN + 1];
+       int p;
+       int error = 0;
+ 
+       /* Parse through the options which is a comma seperated list */
+ 
+-      while(options_str && *options_str && !error){
+-              memset(cur_opt,0,MAX_OPT_LEN+1);
++      while (options_str && *options_str && !error) {
++              memset(cur_opt, 0, MAX_OPT_LEN + 1);
+               p = 0;
+ 
+-              while(*options_str && *options_str != ','){
+-                      if(p < MAX_OPT_LEN){
++              while (*options_str && *options_str != ',') {
++                      if (p < MAX_OPT_LEN) {
+                               cur_opt[p] = *options_str;
+                               p++;
+                       }
+                       options_str++;
+               }
+ 
+-              if(!strcmp(cur_opt,"inband-tags"))
++              if (!strcmp(cur_opt, "inband-tags"))
+                       options->inband_tags = 1;
+-              else if(!strcmp(cur_opt,"no-cache"))
++              else if (!strcmp(cur_opt, "no-cache"))
+                       options->no_cache = 1;
+-              else if(!strcmp(cur_opt,"no-checkpoint-read"))
++              else if (!strcmp(cur_opt, "no-checkpoint-read"))
+                       options->skip_checkpoint_read = 1;
+-              else if(!strcmp(cur_opt,"no-checkpoint-write"))
++              else if (!strcmp(cur_opt, "no-checkpoint-write"))
+                       options->skip_checkpoint_write = 1;
+-              else if(!strcmp(cur_opt,"no-checkpoint")){
++              else if (!strcmp(cur_opt, "no-checkpoint")) {
+                       options->skip_checkpoint_read = 1;
+                       options->skip_checkpoint_write = 1;
+               } else {
+-                      printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",cur_opt);
++                      printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",
++                                      cur_opt);
+                       error = 1;
+               }
+-
+       }
+ 
+       return error;
+ }
+ 
+ static struct super_block *yaffs_internal_read_super(int yaffsVersion,
+-                                                   struct super_block *sb,
+-                                                   void *data, int silent)
++                                              struct super_block *sb,
++                                              void *data, int silent)
+ {
+       int nBlocks;
+       struct inode *inode = NULL;
+@@ -1602,6 +1844,7 @@ static struct super_block *yaffs_interna
+ 
+       sb->s_magic = YAFFS_MAGIC;
+       sb->s_op = &yaffs_super_ops;
++      sb->s_flags |= MS_NOATIME;
+ 
+       if (!sb)
+               printk(KERN_INFO "yaffs: sb is NULL\n");
+@@ -1614,14 +1857,14 @@ static struct super_block *yaffs_interna
+                      sb->s_dev,
+                      yaffs_devname(sb, devname_buf));
+ 
+-      if(!data_str)
++      if (!data_str)
+               data_str = "";
+ 
+-      printk(KERN_INFO "yaffs: passed flags \"%s\"\n",data_str);
++      printk(KERN_INFO "yaffs: passed flags \"%s\"\n", data_str);
+ 
+-      memset(&options,0,sizeof(options));
++      memset(&options, 0, sizeof(options));
+ 
+-      if(yaffs_parse_options(&options,data_str)){
++      if (yaffs_parse_options(&options, data_str)) {
+               /* Option parsing failed */
+               return NULL;
+       }
+@@ -1645,9 +1888,9 @@ static struct super_block *yaffs_interna
+                              yaffs_devname(sb, devname_buf)));
+ 
+       /* Check it's an mtd device..... */
+-      if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) {
++      if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR)
+               return NULL;    /* This isn't an mtd device */
+-      }
++
+       /* Get the device */
+       mtd = get_mtd_device(NULL, MINOR(sb->s_dev));
+       if (!mtd) {
+@@ -1673,29 +1916,23 @@ static struct super_block *yaffs_interna
+       T(YAFFS_TRACE_OS, (" %s %d\n", WRITE_SIZE_STR, WRITE_SIZE(mtd)));
+       T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize));
+       T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize));
+-      T(YAFFS_TRACE_OS, (" size %d\n", mtd->size));
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
++      T(YAFFS_TRACE_OS, (" size %u\n", mtd->size));
++#else
++      T(YAFFS_TRACE_OS, (" size %lld\n", mtd->size));
++#endif
+ 
+ #ifdef CONFIG_YAFFS_AUTO_YAFFS2
+ 
+-      if (yaffsVersion == 1 &&
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+-          mtd->writesize >= 2048) {
+-#else
+-          mtd->oobblock >= 2048) {
+-#endif
+-          T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs2\n"));
+-          yaffsVersion = 2;
++      if (yaffsVersion == 1 && WRITE_SIZE(mtd) >= 2048) {
++              T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs2\n"));
++              yaffsVersion = 2;
+       }
+ 
+       /* Added NCB 26/5/2006 for completeness */
+-      if (yaffsVersion == 2 &&
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+-          mtd->writesize == 512) {
+-#else
+-          mtd->oobblock == 512) {
+-#endif
+-          T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs1\n"));
+-          yaffsVersion = 1;
++      if (yaffsVersion == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) {
++              T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs1\n"));
++              yaffsVersion = 1;
+       }
+ 
+ #endif
+@@ -1707,7 +1944,7 @@ static struct super_block *yaffs_interna
+                   !mtd->block_markbad ||
+                   !mtd->read ||
+                   !mtd->write ||
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+                   !mtd->read_oob || !mtd->write_oob) {
+ #else
+                   !mtd->write_ecc ||
+@@ -1719,12 +1956,9 @@ static struct super_block *yaffs_interna
+                       return NULL;
+               }
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+-              if (mtd->writesize < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
+-#else
+-              if (mtd->oobblock < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
+-#endif
+-                  mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) {
++              if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
++                  mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) &&
++                  !options.inband_tags) {
+                       T(YAFFS_TRACE_ALWAYS,
+                         ("yaffs: MTD device does not have the "
+                          "right page sizes\n"));
+@@ -1735,7 +1969,7 @@ static struct super_block *yaffs_interna
+               if (!mtd->erase ||
+                   !mtd->read ||
+                   !mtd->write ||
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+                   !mtd->read_oob || !mtd->write_oob) {
+ #else
+                   !mtd->write_ecc ||
+@@ -1761,7 +1995,7 @@ static struct super_block *yaffs_interna
+        * Set the yaffs_Device up for mtd
+        */
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+       sb->s_fs_info = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL);
+ #else
+       sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL);
+@@ -1780,13 +2014,15 @@ static struct super_block *yaffs_interna
+ 
+       /* Set up the memory size parameters.... */
+ 
+-      nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
++      nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK));
++
+       dev->startBlock = 0;
+       dev->endBlock = nBlocks - 1;
+       dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
+-      dev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
++      dev->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+       dev->nReservedBlocks = 5;
+       dev->nShortOpCaches = (options.no_cache) ? 0 : 10;
++      dev->inbandTags = options.inband_tags;
+ 
+       /* ... and the functions. */
+       if (yaffsVersion == 2) {
+@@ -1798,20 +2034,19 @@ static struct super_block *yaffs_interna
+               dev->queryNANDBlock = nandmtd2_QueryNANDBlock;
+               dev->spareBuffer = YMALLOC(mtd->oobsize);
+               dev->isYaffs2 = 1;
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+-              dev->nDataBytesPerChunk = mtd->writesize;
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++              dev->totalBytesPerChunk = mtd->writesize;
+               dev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
+ #else
+-              dev->nDataBytesPerChunk = mtd->oobblock;
++              dev->totalBytesPerChunk = mtd->oobblock;
+               dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
+ #endif
+-              nBlocks = mtd->size / mtd->erasesize;
++              nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize);
+ 
+-              dev->nCheckpointReservedBlocks = CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS;
+               dev->startBlock = 0;
+               dev->endBlock = nBlocks - 1;
+       } else {
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+               /* use the MTD interface in yaffs_mtdif1.c */
+               dev->writeChunkWithTagsToNAND =
+                       nandmtd1_WriteChunkWithTagsToNAND;
+@@ -1847,7 +2082,7 @@ static struct super_block *yaffs_interna
+       dev->skipCheckpointWrite = options.skip_checkpoint_write;
+ 
+       /* we assume this is protected by lock_kernel() in mount/umount */
+-      list_add_tail(&dev->devList, &yaffs_dev_list);
++      ylist_add_tail(&dev->devList, &yaffs_dev_list);
+ 
+       init_MUTEX(&dev->grossLock);
+ 
+@@ -1884,20 +2119,23 @@ static struct super_block *yaffs_interna
+               return NULL;
+       }
+       sb->s_root = root;
++      sb->s_dirt = !dev->isCheckpointed;
++      T(YAFFS_TRACE_ALWAYS,
++        ("yaffs_read_super: isCheckpointed %d\n", dev->isCheckpointed));
+ 
+       T(YAFFS_TRACE_OS, ("yaffs_read_super: done\n"));
+       return sb;
+ }
+ 
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data,
+                                        int silent)
+ {
+       return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL;
+ }
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ static int yaffs_read_super(struct file_system_type *fs,
+                           int flags, const char *dev_name,
+                           void *data, struct vfsmount *mnt)
+@@ -1938,14 +2176,14 @@ static DECLARE_FSTYPE(yaffs_fs_type, "ya
+ 
+ #ifdef CONFIG_YAFFS_YAFFS2
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data,
+                                         int silent)
+ {
+       return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL;
+ }
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ static int yaffs2_read_super(struct file_system_type *fs,
+                       int flags, const char *dev_name, void *data,
+                       struct vfsmount *mnt)
+@@ -1990,12 +2228,12 @@ static char *yaffs_dump_dev(char *buf, y
+ {
+       buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock);
+       buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock);
++      buf += sprintf(buf, "totalBytesPerChunk. %d\n", dev->totalBytesPerChunk);
+       buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk);
+       buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits);
+       buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize);
+       buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks);
+       buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks);
+-      buf += sprintf(buf, "nCheckptResBlocks.. %d\n", dev->nCheckpointReservedBlocks);
+       buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint);
+       buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated);
+       buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes);
+@@ -2006,10 +2244,8 @@ static char *yaffs_dump_dev(char *buf, y
+       buf += sprintf(buf, "nPageReads......... %d\n", dev->nPageReads);
+       buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures);
+       buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies);
+-      buf +=
+-          sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections);
+-      buf +=
+-          sprintf(buf, "passiveGCs......... %d\n",
++      buf += sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections);
++      buf += sprintf(buf, "passiveGCs......... %d\n",
+                   dev->passiveGarbageCollections);
+       buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites);
+       buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches);
+@@ -2025,6 +2261,7 @@ static char *yaffs_dump_dev(char *buf, y
+           sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions);
+       buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC);
+       buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2);
++      buf += sprintf(buf, "inbandTags......... %d\n", dev->inbandTags);
+ 
+       return buf;
+ }
+@@ -2033,7 +2270,7 @@ static int yaffs_proc_read(char *page,
+                          char **start,
+                          off_t offset, int count, int *eof, void *data)
+ {
+-      struct list_head *item;
++      struct ylist_head *item;
+       char *buf = page;
+       int step = offset;
+       int n = 0;
+@@ -2057,8 +2294,8 @@ static int yaffs_proc_read(char *page,
+       lock_kernel();
+ 
+       /* Locate and print the Nth entry.  Order N-squared but N is small. */
+-      list_for_each(item, &yaffs_dev_list) {
+-              yaffs_Device *dev = list_entry(item, yaffs_Device, devList);
++      ylist_for_each(item, &yaffs_dev_list) {
++              yaffs_Device *dev = ylist_entry(item, yaffs_Device, devList);
+               if (n < step) {
+                       n++;
+                       continue;
+@@ -2119,7 +2356,7 @@ static int yaffs_proc_write(struct file
+       char *end;
+       char *mask_name;
+       const char *x;
+-      char substring[MAX_MASK_NAME_LENGTH+1];
++      char substring[MAX_MASK_NAME_LENGTH + 1];
+       int i;
+       int done = 0;
+       int add, len = 0;
+@@ -2129,9 +2366,8 @@ static int yaffs_proc_write(struct file
+ 
+       while (!done && (pos < count)) {
+               done = 1;
+-              while ((pos < count) && isspace(buf[pos])) {
++              while ((pos < count) && isspace(buf[pos]))
+                       pos++;
+-              }
+ 
+               switch (buf[pos]) {
+               case '+':
+@@ -2148,20 +2384,21 @@ static int yaffs_proc_write(struct file
+               mask_name = NULL;
+ 
+               mask_bitfield = simple_strtoul(buf + pos, &end, 0);
++
+               if (end > buf + pos) {
+                       mask_name = "numeral";
+                       len = end - (buf + pos);
+                       pos += len;
+                       done = 0;
+               } else {
+-                      for(x = buf + pos, i = 0;
+-                          (*x == '_' || (*x >='a' && *x <= 'z')) &&
+-                          i <MAX_MASK_NAME_LENGTH; x++, i++, pos++)
+-                          substring[i] = *x;
++                      for (x = buf + pos, i = 0;
++                          (*x == '_' || (*x >= 'a' && *x <= 'z')) &&
++                          i < MAX_MASK_NAME_LENGTH; x++, i++, pos++)
++                              substring[i] = *x;
+                       substring[i] = '\0';
+ 
+                       for (i = 0; mask_flags[i].mask_name != NULL; i++) {
+-                              if(strcmp(substring,mask_flags[i].mask_name) == 0){
++                              if (strcmp(substring, mask_flags[i].mask_name) == 0) {
+                                       mask_name = mask_flags[i].mask_name;
+                                       mask_bitfield = mask_flags[i].mask_bitfield;
+                                       done = 0;
+@@ -2172,7 +2409,7 @@ static int yaffs_proc_write(struct file
+ 
+               if (mask_name != NULL) {
+                       done = 0;
+-                      switch(add) {
++                      switch (add) {
+                       case '-':
+                               rg &= ~mask_bitfield;
+                               break;
+@@ -2191,13 +2428,13 @@ static int yaffs_proc_write(struct file
+ 
+       yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS;
+ 
+-      printk("new trace = 0x%08X\n",yaffs_traceMask);
++      printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_traceMask);
+ 
+       if (rg & YAFFS_TRACE_ALWAYS) {
+               for (i = 0; mask_flags[i].mask_name != NULL; i++) {
+                       char flag;
+                       flag = ((rg & mask_flags[i].mask_bitfield) == mask_flags[i].mask_bitfield) ? '+' : '-';
+-                      printk("%c%s\n", flag, mask_flags[i].mask_name);
++                      printk(KERN_DEBUG "%c%s\n", flag, mask_flags[i].mask_name);
+               }
+       }
+ 
+@@ -2211,12 +2448,8 @@ struct file_system_to_install {
+ };
+ 
+ static struct file_system_to_install fs_to_install[] = {
+-//#ifdef CONFIG_YAFFS_YAFFS1
+       {&yaffs_fs_type, 0},
+-//#endif
+-//#ifdef CONFIG_YAFFS_YAFFS2
+       {&yaffs2_fs_type, 0},
+-//#endif
+       {NULL, 0}
+ };
+ 
+@@ -2231,15 +2464,14 @@ static int __init init_yaffs_fs(void)
+       /* Install the proc_fs entry */
+       my_proc_entry = create_proc_entry("yaffs",
+                                              S_IRUGO | S_IFREG,
+-                                             &proc_root);
++                                             YPROC_ROOT);
+ 
+       if (my_proc_entry) {
+               my_proc_entry->write_proc = yaffs_proc_write;
+               my_proc_entry->read_proc = yaffs_proc_read;
+               my_proc_entry->data = NULL;
+-      } else {
++      } else
+               return -ENOMEM;
+-      }
+ 
+       /* Now add the file system entries */
+ 
+@@ -2247,9 +2479,8 @@ static int __init init_yaffs_fs(void)
+ 
+       while (fsinst->fst && !error) {
+               error = register_filesystem(fsinst->fst);
+-              if (!error) {
++              if (!error)
+                       fsinst->installed = 1;
+-              }
+               fsinst++;
+       }
+ 
+@@ -2277,7 +2508,7 @@ static void __exit exit_yaffs_fs(void)
+       T(YAFFS_TRACE_ALWAYS, ("yaffs " __DATE__ " " __TIME__
+                              " removing. \n"));
+ 
+-      remove_proc_entry("yaffs", &proc_root);
++      remove_proc_entry("yaffs", YPROC_ROOT);
+ 
+       fsinst = fs_to_install;
+ 
+@@ -2288,7 +2519,6 @@ static void __exit exit_yaffs_fs(void)
+               }
+               fsinst++;
+       }
+-
+ }
+ 
+ module_init(init_yaffs_fs)
+--- /dev/null
++++ b/fs/yaffs2/yaffs_getblockinfo.h
+@@ -0,0 +1,34 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_GETBLOCKINFO_H__
++#define __YAFFS_GETBLOCKINFO_H__
++
++#include "yaffs_guts.h"
++
++/* Function to manipulate block info */
++static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk)
++{
++      if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
++              T(YAFFS_TRACE_ERROR,
++                (TSTR
++                 ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR),
++                 blk));
++              YBUG();
++      }
++      return &dev->blockInfo[blk - dev->internalStartBlock];
++}
++
++#endif
+--- a/fs/yaffs2/yaffs_guts.c
++++ b/fs/yaffs2/yaffs_guts.c
+@@ -12,16 +12,17 @@
+  */
+ 
+ const char *yaffs_guts_c_version =
+-    "$Id: yaffs_guts.c,v 1.49 2007-05-15 20:07:40 charles Exp $";
++    "$Id: yaffs_guts.c,v 1.82 2009-03-09 04:24:17 charles Exp $";
+ 
+ #include "yportenv.h"
+ 
+ #include "yaffsinterface.h"
+ #include "yaffs_guts.h"
+ #include "yaffs_tagsvalidity.h"
++#include "yaffs_getblockinfo.h"
+ 
+ #include "yaffs_tagscompat.h"
+-#ifndef  CONFIG_YAFFS_USE_OWN_SORT
++#ifndef CONFIG_YAFFS_USE_OWN_SORT
+ #include "yaffs_qsort.h"
+ #endif
+ #include "yaffs_nand.h"
+@@ -32,116 +33,116 @@ const char *yaffs_guts_c_version =
+ #include "yaffs_packedtags2.h"
+ 
+ 
+-#ifdef CONFIG_YAFFS_WINCE
+-void yfsd_LockYAFFS(BOOL fsLockOnly);
+-void yfsd_UnlockYAFFS(BOOL fsLockOnly);
+-#endif
+-
+ #define YAFFS_PASSIVE_GC_CHUNKS 2
+ 
+ #include "yaffs_ecc.h"
+ 
+ 
+ /* Robustification (if it ever comes about...) */
+-static void yaffs_RetireBlock(yaffs_Device * dev, int blockInNAND);
+-static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND, int erasedOk);
+-static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
+-                                   const __u8 * data,
+-                                   const yaffs_ExtendedTags * tags);
+-static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
+-                                  const yaffs_ExtendedTags * tags);
++static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND);
++static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND,
++              int erasedOk);
++static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
++                              const __u8 *data,
++                              const yaffs_ExtendedTags *tags);
++static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
++                              const yaffs_ExtendedTags *tags);
+ 
+ /* Other local prototypes */
+-static int yaffs_UnlinkObject( yaffs_Object *obj);
++static int yaffs_UnlinkObject(yaffs_Object *obj);
+ static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj);
+ 
+ static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList);
+ 
+-static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device * dev,
+-                                           const __u8 * buffer,
+-                                           yaffs_ExtendedTags * tags,
+-                                           int useReserve);
+-static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode,
+-                                int chunkInNAND, int inScan);
+-
+-static yaffs_Object *yaffs_CreateNewObject(yaffs_Device * dev, int number,
+-                                         yaffs_ObjectType type);
+-static void yaffs_AddObjectToDirectory(yaffs_Object * directory,
+-                                     yaffs_Object * obj);
+-static int yaffs_UpdateObjectHeader(yaffs_Object * in, const YCHAR * name,
+-                                  int force, int isShrink, int shadows);
+-static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj);
++static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device *dev,
++                                      const __u8 *buffer,
++                                      yaffs_ExtendedTags *tags,
++                                      int useReserve);
++static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
++                              int chunkInNAND, int inScan);
++
++static yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
++                                      yaffs_ObjectType type);
++static void yaffs_AddObjectToDirectory(yaffs_Object *directory,
++                              yaffs_Object *obj);
++static int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name,
++                              int force, int isShrink, int shadows);
++static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj);
+ static int yaffs_CheckStructures(void);
+-static int yaffs_DeleteWorker(yaffs_Object * in, yaffs_Tnode * tn, __u32 level,
+-                            int chunkOffset, int *limit);
+-static int yaffs_DoGenericObjectDeletion(yaffs_Object * in);
+-
+-static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blockNo);
+-
+-static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo);
+-static void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer,
+-                                  int lineNo);
++static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
++                      int chunkOffset, int *limit);
++static int yaffs_DoGenericObjectDeletion(yaffs_Object *in);
++
++static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device *dev, int blockNo);
+ 
+-static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
+-                                int chunkInNAND);
+ 
+-static int yaffs_UnlinkWorker(yaffs_Object * obj);
+-static void yaffs_DestroyObject(yaffs_Object * obj);
++static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
++                              int chunkInNAND);
+ 
+-static int yaffs_TagsMatch(const yaffs_ExtendedTags * tags, int objectId,
+-                         int chunkInObject);
++static int yaffs_UnlinkWorker(yaffs_Object *obj);
+ 
+-loff_t yaffs_GetFileSize(yaffs_Object * obj);
++static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId,
++                      int chunkInObject);
+ 
+-static int yaffs_AllocateChunk(yaffs_Device * dev, int useReserve, yaffs_BlockInfo **blockUsedPtr);
++static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve,
++                              yaffs_BlockInfo **blockUsedPtr);
+ 
+-static void yaffs_VerifyFreeChunks(yaffs_Device * dev);
++static void yaffs_VerifyFreeChunks(yaffs_Device *dev);
+ 
+ static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in);
+ 
++static void yaffs_VerifyDirectory(yaffs_Object *directory);
+ #ifdef YAFFS_PARANOID
+-static int yaffs_CheckFileSanity(yaffs_Object * in);
++static int yaffs_CheckFileSanity(yaffs_Object *in);
+ #else
+ #define yaffs_CheckFileSanity(in)
+ #endif
+ 
+-static void yaffs_InvalidateWholeChunkCache(yaffs_Object * in);
+-static void yaffs_InvalidateChunkCache(yaffs_Object * object, int chunkId);
++static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in);
++static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId);
+ 
+ static void yaffs_InvalidateCheckpoint(yaffs_Device *dev);
+ 
+-static int yaffs_FindChunkInFile(yaffs_Object * in, int chunkInInode,
+-                               yaffs_ExtendedTags * tags);
++static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode,
++                              yaffs_ExtendedTags *tags);
+ 
+-static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos);
+-static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device * dev,
+-                                        yaffs_FileStructure * fStruct,
+-                                        __u32 chunkId);
++static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
++              unsigned pos);
++static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev,
++                                      yaffs_FileStructure *fStruct,
++                                      __u32 chunkId);
+ 
+ 
+ /* Function to calculate chunk and offset */
+ 
+-static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, __u32 *chunk, __u32 *offset)
++static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, int *chunkOut,
++              __u32 *offsetOut)
+ {
+-      if(dev->chunkShift){
+-              /* Easy-peasy power of 2 case */
+-              *chunk  = (__u32)(addr >> dev->chunkShift);
+-              *offset = (__u32)(addr & dev->chunkMask);
+-      }
+-      else if(dev->crumbsPerChunk)
+-      {
+-              /* Case where we're using "crumbs" */
+-              *offset = (__u32)(addr & dev->crumbMask);
+-              addr >>= dev->crumbShift;
+-              *chunk = ((__u32)addr)/dev->crumbsPerChunk;
+-              *offset += ((addr - (*chunk * dev->crumbsPerChunk)) << dev->crumbShift);
++      int chunk;
++      __u32 offset;
++
++      chunk  = (__u32)(addr >> dev->chunkShift);
++
++      if (dev->chunkDiv == 1) {
++              /* easy power of 2 case */
++              offset = (__u32)(addr & dev->chunkMask);
++      } else {
++              /* Non power-of-2 case */
++
++              loff_t chunkBase;
++
++              chunk /= dev->chunkDiv;
++
++              chunkBase = ((loff_t)chunk) * dev->nDataBytesPerChunk;
++              offset = (__u32)(addr - chunkBase);
+       }
+-      else
+-              YBUG();
++
++      *chunkOut = chunk;
++      *offsetOut = offset;
+ }
+ 
+-/* Function to return the number of shifts for a power of 2 greater than or equal
+- * to the given number
++/* Function to return the number of shifts for a power of 2 greater than or
++ * equal to the given number
+  * Note we don't try to cater for all possible numbers and this does not have to
+  * be hellishly efficient.
+  */
+@@ -153,13 +154,14 @@ static __u32 ShiftsGE(__u32 x)
+ 
+       nShifts = extraBits = 0;
+ 
+-      while(x>1){
+-              if(x & 1) extraBits++;
+-              x>>=1;
++      while (x > 1) {
++              if (x & 1)
++                      extraBits++;
++              x >>= 1;
+               nShifts++;
+       }
+ 
+-      if(extraBits)
++      if (extraBits)
+               nShifts++;
+ 
+       return nShifts;
+@@ -168,16 +170,17 @@ static __u32 ShiftsGE(__u32 x)
+ /* Function to return the number of shifts to get a 1 in bit 0
+  */
+ 
+-static __u32 ShiftDiv(__u32 x)
++static __u32 Shifts(__u32 x)
+ {
+       int nShifts;
+ 
+       nShifts =  0;
+ 
+-      if(!x) return 0;
++      if (!x)
++              return 0;
+ 
+-      while( !(x&1)){
+-              x>>=1;
++      while (!(x&1)) {
++              x >>= 1;
+               nShifts++;
+       }
+ 
+@@ -195,21 +198,25 @@ static int yaffs_InitialiseTempBuffers(y
+       int i;
+       __u8 *buf = (__u8 *)1;
+ 
+-      memset(dev->tempBuffer,0,sizeof(dev->tempBuffer));
++      memset(dev->tempBuffer, 0, sizeof(dev->tempBuffer));
+ 
+       for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) {
+               dev->tempBuffer[i].line = 0;    /* not in use */
+               dev->tempBuffer[i].buffer = buf =
+-                  YMALLOC_DMA(dev->nDataBytesPerChunk);
++                  YMALLOC_DMA(dev->totalBytesPerChunk);
+       }
+ 
+       return buf ? YAFFS_OK : YAFFS_FAIL;
+-
+ }
+ 
+-static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo)
++__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo)
+ {
+       int i, j;
++
++      dev->tempInUse++;
++      if (dev->tempInUse > dev->maxTemp)
++              dev->maxTemp = dev->tempInUse;
++
+       for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
+               if (dev->tempBuffer[i].line == 0) {
+                       dev->tempBuffer[i].line = lineNo;
+@@ -227,9 +234,9 @@ static __u8 *yaffs_GetTempBuffer(yaffs_D
+       T(YAFFS_TRACE_BUFFERS,
+         (TSTR("Out of temp buffers at line %d, other held by lines:"),
+          lineNo));
+-      for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
++      for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++)
+               T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->tempBuffer[i].line));
+-      }
++
+       T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR)));
+ 
+       /*
+@@ -242,10 +249,13 @@ static __u8 *yaffs_GetTempBuffer(yaffs_D
+ 
+ }
+ 
+-static void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer,
++void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer,
+                                   int lineNo)
+ {
+       int i;
++
++      dev->tempInUse--;
++
+       for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
+               if (dev->tempBuffer[i].buffer == buffer) {
+                       dev->tempBuffer[i].line = 0;
+@@ -267,27 +277,26 @@ static void yaffs_ReleaseTempBuffer(yaff
+ /*
+  * Determine if we have a managed buffer.
+  */
+-int yaffs_IsManagedTempBuffer(yaffs_Device * dev, const __u8 * buffer)
++int yaffs_IsManagedTempBuffer(yaffs_Device *dev, const __u8 *buffer)
+ {
+       int i;
++
+       for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
+               if (dev->tempBuffer[i].buffer == buffer)
+                       return 1;
++      }
+ 
++      for (i = 0; i < dev->nShortOpCaches; i++) {
++              if (dev->srCache[i].data == buffer)
++                      return 1;
+       }
+ 
+-    for (i = 0; i < dev->nShortOpCaches; i++) {
+-        if( dev->srCache[i].data == buffer )
+-            return 1;
+-
+-    }
+-
+-    if (buffer == dev->checkpointBuffer)
+-      return 1;
+-
+-    T(YAFFS_TRACE_ALWAYS,
+-        (TSTR("yaffs: unmaged buffer detected.\n" TENDSTR)));
+-    return 0;
++      if (buffer == dev->checkpointBuffer)
++              return 1;
++
++      T(YAFFS_TRACE_ALWAYS,
++              (TSTR("yaffs: unmaged buffer detected.\n" TENDSTR)));
++      return 0;
+ }
+ 
+ 
+@@ -296,62 +305,63 @@ int yaffs_IsManagedTempBuffer(yaffs_Devi
+  * Chunk bitmap manipulations
+  */
+ 
+-static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device * dev, int blk)
++static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device *dev, int blk)
+ {
+       if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
+               T(YAFFS_TRACE_ERROR,
+-                (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR),
+-                 blk));
++                      (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR),
++                      blk));
+               YBUG();
+       }
+       return dev->chunkBits +
+-          (dev->chunkBitmapStride * (blk - dev->internalStartBlock));
++              (dev->chunkBitmapStride * (blk - dev->internalStartBlock));
+ }
+ 
+ static Y_INLINE void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk)
+ {
+-      if(blk < dev->internalStartBlock || blk > dev->internalEndBlock ||
+-         chunk < 0 || chunk >= dev->nChunksPerBlock) {
+-         T(YAFFS_TRACE_ERROR,
+-          (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),blk,chunk));
+-          YBUG();
++      if (blk < dev->internalStartBlock || blk > dev->internalEndBlock ||
++                      chunk < 0 || chunk >= dev->nChunksPerBlock) {
++              T(YAFFS_TRACE_ERROR,
++              (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),
++                      blk, chunk));
++              YBUG();
+       }
+ }
+ 
+-static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device * dev, int blk)
++static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device *dev, int blk)
+ {
+       __u8 *blkBits = yaffs_BlockBits(dev, blk);
+ 
+       memset(blkBits, 0, dev->chunkBitmapStride);
+ }
+ 
+-static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device * dev, int blk, int chunk)
++static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device *dev, int blk, int chunk)
+ {
+       __u8 *blkBits = yaffs_BlockBits(dev, blk);
+ 
+-      yaffs_VerifyChunkBitId(dev,blk,chunk);
++      yaffs_VerifyChunkBitId(dev, blk, chunk);
+ 
+       blkBits[chunk / 8] &= ~(1 << (chunk & 7));
+ }
+ 
+-static Y_INLINE void yaffs_SetChunkBit(yaffs_Device * dev, int blk, int chunk)
++static Y_INLINE void yaffs_SetChunkBit(yaffs_Device *dev, int blk, int chunk)
+ {
+       __u8 *blkBits = yaffs_BlockBits(dev, blk);
+ 
+-      yaffs_VerifyChunkBitId(dev,blk,chunk);
++      yaffs_VerifyChunkBitId(dev, blk, chunk);
+ 
+       blkBits[chunk / 8] |= (1 << (chunk & 7));
+ }
+ 
+-static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device * dev, int blk, int chunk)
++static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device *dev, int blk, int chunk)
+ {
+       __u8 *blkBits = yaffs_BlockBits(dev, blk);
+-      yaffs_VerifyChunkBitId(dev,blk,chunk);
++      yaffs_VerifyChunkBitId(dev, blk, chunk);
+ 
+       return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0;
+ }
+ 
+-static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device * dev, int blk)
++static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device *dev, int blk)
+ {
+       __u8 *blkBits = yaffs_BlockBits(dev, blk);
+       int i;
+@@ -363,17 +373,17 @@ static Y_INLINE int yaffs_StillSomeChunk
+       return 0;
+ }
+ 
+-static int yaffs_CountChunkBits(yaffs_Device * dev, int blk)
++static int yaffs_CountChunkBits(yaffs_Device *dev, int blk)
+ {
+       __u8 *blkBits = yaffs_BlockBits(dev, blk);
+       int i;
+       int n = 0;
+       for (i = 0; i < dev->chunkBitmapStride; i++) {
+               __u8 x = *blkBits;
+-              while(x){
+-                      if(x & 1)
++              while (x) {
++                      if (x & 1)
+                               n++;
+-                      x >>=1;
++                      x >>= 1;
+               }
+ 
+               blkBits++;
+@@ -400,7 +410,7 @@ static int yaffs_SkipNANDVerification(ya
+       return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND));
+ }
+ 
+-static const char * blockStateName[] = {
++static const char *blockStateName[] = {
+ "Unknown",
+ "Needs scanning",
+ "Scanning",
+@@ -413,64 +423,65 @@ static const char * blockStateName[] = {
+ "Dead"
+ };
+ 
+-static void yaffs_VerifyBlock(yaffs_Device *dev,yaffs_BlockInfo *bi,int n)
++static void yaffs_VerifyBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n)
+ {
+       int actuallyUsed;
+       int inUse;
+ 
+-      if(yaffs_SkipVerification(dev))
++      if (yaffs_SkipVerification(dev))
+               return;
+ 
+       /* Report illegal runtime states */
+-      if(bi->blockState <0 || bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES)
+-              T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has undefined state %d"TENDSTR),n,bi->blockState));
++      if (bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES)
++              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->blockState));
+ 
+-      switch(bi->blockState){
+-       case YAFFS_BLOCK_STATE_UNKNOWN:
+-       case YAFFS_BLOCK_STATE_SCANNING:
+-       case YAFFS_BLOCK_STATE_NEEDS_SCANNING:
+-              T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has bad run-state %s"TENDSTR),
+-              n,blockStateName[bi->blockState]));
++      switch (bi->blockState) {
++      case YAFFS_BLOCK_STATE_UNKNOWN:
++      case YAFFS_BLOCK_STATE_SCANNING:
++      case YAFFS_BLOCK_STATE_NEEDS_SCANNING:
++              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR),
++              n, blockStateName[bi->blockState]));
+       }
+ 
+       /* Check pages in use and soft deletions are legal */
+ 
+       actuallyUsed = bi->pagesInUse - bi->softDeletions;
+ 
+-      if(bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock ||
++      if (bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock ||
+          bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock ||
+          actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock)
+-              T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR),
+-              n,bi->pagesInUse,bi->softDeletions));
++              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR),
++              n, bi->pagesInUse, bi->softDeletions));
+ 
+ 
+       /* Check chunk bitmap legal */
+-      inUse = yaffs_CountChunkBits(dev,n);
+-      if(inUse != bi->pagesInUse)
+-              T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR),
+-                      n,bi->pagesInUse,inUse));
++      inUse = yaffs_CountChunkBits(dev, n);
++      if (inUse != bi->pagesInUse)
++              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR),
++                      n, bi->pagesInUse, inUse));
+ 
+       /* Check that the sequence number is valid.
+        * Ten million is legal, but is very unlikely
+        */
+-      if(dev->isYaffs2 &&
++      if (dev->isYaffs2 &&
+          (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) &&
+-         (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000 ))
+-              T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has suspect sequence number of %d"TENDSTR),
+-              n,bi->sequenceNumber));
+-
++         (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000))
++              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has suspect sequence number of %d"TENDSTR),
++              n, bi->sequenceNumber));
+ }
+ 
+-static void yaffs_VerifyCollectedBlock(yaffs_Device *dev,yaffs_BlockInfo *bi,int n)
++static void yaffs_VerifyCollectedBlock(yaffs_Device *dev, yaffs_BlockInfo *bi,
++              int n)
+ {
+-      yaffs_VerifyBlock(dev,bi,n);
++      yaffs_VerifyBlock(dev, bi, n);
+ 
+       /* After collection the block should be in the erased state */
+-      /* TODO: This will need to change if we do partial gc */
++      /* This will need to change if we do partial gc */
+ 
+-      if(bi->blockState != YAFFS_BLOCK_STATE_EMPTY){
+-              T(YAFFS_TRACE_ERROR,(TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
+-                      n,bi->blockState));
++      if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING &&
++                      bi->blockState != YAFFS_BLOCK_STATE_EMPTY) {
++              T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
++                      n, bi->blockState));
+       }
+ }
+ 
+@@ -480,52 +491,49 @@ static void yaffs_VerifyBlocks(yaffs_Dev
+       int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES];
+       int nIllegalBlockStates = 0;
+ 
+-
+-      if(yaffs_SkipVerification(dev))
++      if (yaffs_SkipVerification(dev))
+               return;
+ 
+-      memset(nBlocksPerState,0,sizeof(nBlocksPerState));
+-
++      memset(nBlocksPerState, 0, sizeof(nBlocksPerState));
+ 
+-      for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++){
+-              yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
+-              yaffs_VerifyBlock(dev,bi,i);
++      for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
++              yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
++              yaffs_VerifyBlock(dev, bi, i);
+ 
+-              if(bi->blockState >=0 && bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES)
++              if (bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES)
+                       nBlocksPerState[bi->blockState]++;
+               else
+                       nIllegalBlockStates++;
+-
+       }
+ 
+-      T(YAFFS_TRACE_VERIFY,(TSTR(""TENDSTR)));
+-      T(YAFFS_TRACE_VERIFY,(TSTR("Block summary"TENDSTR)));
++      T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
++      T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR)));
+ 
+-      T(YAFFS_TRACE_VERIFY,(TSTR("%d blocks have illegal states"TENDSTR),nIllegalBlockStates));
+-      if(nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
+-              T(YAFFS_TRACE_VERIFY,(TSTR("Too many allocating blocks"TENDSTR)));
++      T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates));
++      if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
++              T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR)));
+ 
+-      for(i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++)
++      for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++)
+               T(YAFFS_TRACE_VERIFY,
+                 (TSTR("%s %d blocks"TENDSTR),
+-                blockStateName[i],nBlocksPerState[i]));
++                blockStateName[i], nBlocksPerState[i]));
+ 
+-      if(dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
++      if (dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
+               T(YAFFS_TRACE_VERIFY,
+                (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR),
+                dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]));
+ 
+-      if(dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
++      if (dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
+               T(YAFFS_TRACE_VERIFY,
+                (TSTR("Erased block count wrong dev %d count %d"TENDSTR),
+                dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]));
+ 
+-      if(nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
++      if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
+               T(YAFFS_TRACE_VERIFY,
+                (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR),
+                nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING]));
+ 
+-      T(YAFFS_TRACE_VERIFY,(TSTR(""TENDSTR)));
++      T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
+ 
+ }
+ 
+@@ -535,26 +543,26 @@ static void yaffs_VerifyBlocks(yaffs_Dev
+  */
+ static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck)
+ {
+-      if(yaffs_SkipVerification(obj->myDev))
++      if (obj && yaffs_SkipVerification(obj->myDev))
+               return;
+ 
+-      if(!(tags && obj && oh)){
+-              T(YAFFS_TRACE_VERIFY,
+-                              (TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR),
+-                              (__u32)tags,(__u32)obj,(__u32)oh));
++      if (!(tags && obj && oh)) {
++              T(YAFFS_TRACE_VERIFY,
++                              (TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR),
++                              (__u32)tags, (__u32)obj, (__u32)oh));
+               return;
+       }
+ 
+-      if(oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
+-         oh->type > YAFFS_OBJECT_TYPE_MAX)
+-              T(YAFFS_TRACE_VERIFY,
+-               (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR),
+-               tags->objectId, oh->type));
+-
+-      if(tags->objectId != obj->objectId)
+-              T(YAFFS_TRACE_VERIFY,
+-               (TSTR("Obj %d header mismatch objectId %d"TENDSTR),
+-               tags->objectId, obj->objectId));
++      if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
++                      oh->type > YAFFS_OBJECT_TYPE_MAX)
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR),
++                      tags->objectId, oh->type));
++
++      if (tags->objectId != obj->objectId)
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d header mismatch objectId %d"TENDSTR),
++                      tags->objectId, obj->objectId));
+ 
+ 
+       /*
+@@ -563,46 +571,43 @@ static void yaffs_VerifyObjectHeader(yaf
+        * Tests do not apply to the root object.
+        */
+ 
+-      if(parentCheck && tags->objectId > 1 && !obj->parent)
+-              T(YAFFS_TRACE_VERIFY,
+-               (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR),
+-               tags->objectId, oh->parentObjectId));
+-
+-
+-      if(parentCheck && obj->parent &&
+-         oh->parentObjectId != obj->parent->objectId &&
+-         (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED ||
+-          obj->parent->objectId != YAFFS_OBJECTID_DELETED))
+-              T(YAFFS_TRACE_VERIFY,
+-               (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR),
+-               tags->objectId, oh->parentObjectId, obj->parent->objectId));
++      if (parentCheck && tags->objectId > 1 && !obj->parent)
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR),
++                      tags->objectId, oh->parentObjectId));
+ 
++      if (parentCheck && obj->parent &&
++                      oh->parentObjectId != obj->parent->objectId &&
++                      (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED ||
++                      obj->parent->objectId != YAFFS_OBJECTID_DELETED))
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR),
++                      tags->objectId, oh->parentObjectId, obj->parent->objectId));
+ 
+-      if(tags->objectId > 1 && oh->name[0] == 0) /* Null name */
++      if (tags->objectId > 1 && oh->name[0] == 0) /* Null name */
+               T(YAFFS_TRACE_VERIFY,
+-              (TSTR("Obj %d header name is NULL"TENDSTR),
+-               obj->objectId));
++                      (TSTR("Obj %d header name is NULL"TENDSTR),
++                      obj->objectId));
+ 
+-      if(tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */
++      if (tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */
+               T(YAFFS_TRACE_VERIFY,
+-              (TSTR("Obj %d header name is 0xFF"TENDSTR),
+-               obj->objectId));
++                      (TSTR("Obj %d header name is 0xFF"TENDSTR),
++                      obj->objectId));
+ }
+ 
+ 
+ 
+-static int yaffs_VerifyTnodeWorker(yaffs_Object * obj, yaffs_Tnode * tn,
+-                                      __u32 level, int chunkOffset)
++static int yaffs_VerifyTnodeWorker(yaffs_Object *obj, yaffs_Tnode *tn,
++                                      __u32 level, int chunkOffset)
+ {
+       int i;
+       yaffs_Device *dev = obj->myDev;
+       int ok = 1;
+-      int nTnodeBytes = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+ 
+       if (tn) {
+               if (level > 0) {
+ 
+-                      for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++){
++                      for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
+                               if (tn->internal[i]) {
+                                       ok = yaffs_VerifyTnodeWorker(obj,
+                                                       tn->internal[i],
+@@ -611,20 +616,19 @@ static int yaffs_VerifyTnodeWorker(yaffs
+                               }
+                       }
+               } else if (level == 0) {
+-                      int i;
+                       yaffs_ExtendedTags tags;
+                       __u32 objectId = obj->objectId;
+ 
+                       chunkOffset <<=  YAFFS_TNODES_LEVEL0_BITS;
+ 
+-                      for(i = 0; i < YAFFS_NTNODES_LEVEL0; i++){
+-                              __u32 theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
++                      for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) {
++                              __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
+ 
+-                              if(theChunk > 0){
++                              if (theChunk > 0) {
+                                       /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */
+-                                      yaffs_ReadChunkWithTagsFromNAND(dev,theChunk,NULL, &tags);
+-                                      if(tags.objectId != objectId || tags.chunkId != chunkOffset){
+-                                              T(~0,(TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
++                                      yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags);
++                                      if (tags.objectId != objectId || tags.chunkId != chunkOffset) {
++                                              T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
+                                                       objectId, chunkOffset, theChunk,
+                                                       tags.objectId, tags.chunkId));
+                                       }
+@@ -646,13 +650,15 @@ static void yaffs_VerifyFile(yaffs_Objec
+       __u32 lastChunk;
+       __u32 x;
+       __u32 i;
+-      int ok;
+       yaffs_Device *dev;
+       yaffs_ExtendedTags tags;
+       yaffs_Tnode *tn;
+       __u32 objectId;
+ 
+-      if(obj && yaffs_SkipVerification(obj->myDev))
++      if (!obj)
++              return;
++
++      if (yaffs_SkipVerification(obj->myDev))
+               return;
+ 
+       dev = obj->myDev;
+@@ -662,17 +668,17 @@ static void yaffs_VerifyFile(yaffs_Objec
+       lastChunk =  obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1;
+       x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS;
+       requiredTallness = 0;
+-      while (x> 0) {
++      while (x > 0) {
+               x >>= YAFFS_TNODES_INTERNAL_BITS;
+               requiredTallness++;
+       }
+ 
+       actualTallness = obj->variant.fileVariant.topLevel;
+ 
+-      if(requiredTallness > actualTallness )
++      if (requiredTallness > actualTallness)
+               T(YAFFS_TRACE_VERIFY,
+               (TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR),
+-               obj->objectId,actualTallness, requiredTallness));
++               obj->objectId, actualTallness, requiredTallness));
+ 
+ 
+       /* Check that the chunks in the tnode tree are all correct.
+@@ -680,39 +686,31 @@ static void yaffs_VerifyFile(yaffs_Objec
+        * checking the tags for every chunk match.
+        */
+ 
+-      if(yaffs_SkipNANDVerification(dev))
++      if (yaffs_SkipNANDVerification(dev))
+               return;
+ 
+-      for(i = 1; i <= lastChunk; i++){
+-              tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant,i);
++      for (i = 1; i <= lastChunk; i++) {
++              tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant, i);
+ 
+               if (tn) {
+-                      __u32 theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
+-                      if(theChunk > 0){
++                      __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
++                      if (theChunk > 0) {
+                               /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */
+-                              yaffs_ReadChunkWithTagsFromNAND(dev,theChunk,NULL, &tags);
+-                              if(tags.objectId != objectId || tags.chunkId != i){
+-                                      T(~0,(TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
++                              yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags);
++                              if (tags.objectId != objectId || tags.chunkId != i) {
++                                      T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
+                                               objectId, i, theChunk,
+                                               tags.objectId, tags.chunkId));
+                               }
+                       }
+               }
+-
+       }
+-
+ }
+ 
+-static void yaffs_VerifyDirectory(yaffs_Object *obj)
+-{
+-      if(obj && yaffs_SkipVerification(obj->myDev))
+-              return;
+-
+-}
+ 
+ static void yaffs_VerifyHardLink(yaffs_Object *obj)
+ {
+-      if(obj && yaffs_SkipVerification(obj->myDev))
++      if (obj && yaffs_SkipVerification(obj->myDev))
+               return;
+ 
+       /* Verify sane equivalent object */
+@@ -720,7 +718,7 @@ static void yaffs_VerifyHardLink(yaffs_O
+ 
+ static void yaffs_VerifySymlink(yaffs_Object *obj)
+ {
+-      if(obj && yaffs_SkipVerification(obj->myDev))
++      if (obj && yaffs_SkipVerification(obj->myDev))
+               return;
+ 
+       /* Verify symlink string */
+@@ -728,7 +726,7 @@ static void yaffs_VerifySymlink(yaffs_Ob
+ 
+ static void yaffs_VerifySpecial(yaffs_Object *obj)
+ {
+-      if(obj && yaffs_SkipVerification(obj->myDev))
++      if (obj && yaffs_SkipVerification(obj->myDev))
+               return;
+ }
+ 
+@@ -740,14 +738,19 @@ static void yaffs_VerifyObject(yaffs_Obj
+       __u32 chunkMax;
+ 
+       __u32 chunkIdOk;
+-      __u32 chunkIsLive;
++      __u32 chunkInRange;
++      __u32 chunkShouldNotBeDeleted;
++      __u32 chunkValid;
++
++      if (!obj)
++              return;
+ 
+-      if(!obj)
++      if (obj->beingCreated)
+               return;
+ 
+       dev = obj->myDev;
+ 
+-      if(yaffs_SkipVerification(dev))
++      if (yaffs_SkipVerification(dev))
+               return;
+ 
+       /* Check sane object header chunk */
+@@ -755,50 +758,54 @@ static void yaffs_VerifyObject(yaffs_Obj
+       chunkMin = dev->internalStartBlock * dev->nChunksPerBlock;
+       chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1;
+ 
+-      chunkIdOk = (obj->chunkId >= chunkMin && obj->chunkId <= chunkMax);
+-      chunkIsLive = chunkIdOk &&
++      chunkInRange = (((unsigned)(obj->hdrChunk)) >= chunkMin && ((unsigned)(obj->hdrChunk)) <= chunkMax);
++      chunkIdOk = chunkInRange || obj->hdrChunk == 0;
++      chunkValid = chunkInRange &&
+                       yaffs_CheckChunkBit(dev,
+-                                          obj->chunkId / dev->nChunksPerBlock,
+-                                          obj->chunkId % dev->nChunksPerBlock);
+-      if(!obj->fake &&
+-          (!chunkIdOk || !chunkIsLive)) {
+-         T(YAFFS_TRACE_VERIFY,
+-         (TSTR("Obj %d has chunkId %d %s %s"TENDSTR),
+-         obj->objectId,obj->chunkId,
+-         chunkIdOk ? "" : ",out of range",
+-         chunkIsLive || !chunkIdOk ? "" : ",marked as deleted"));
++                                      obj->hdrChunk / dev->nChunksPerBlock,
++                                      obj->hdrChunk % dev->nChunksPerBlock);
++      chunkShouldNotBeDeleted = chunkInRange && !chunkValid;
++
++      if (!obj->fake &&
++                      (!chunkIdOk || chunkShouldNotBeDeleted)) {
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d has chunkId %d %s %s"TENDSTR),
++                      obj->objectId, obj->hdrChunk,
++                      chunkIdOk ? "" : ",out of range",
++                      chunkShouldNotBeDeleted ? ",marked as deleted" : ""));
+       }
+ 
+-      if(chunkIdOk && chunkIsLive &&!yaffs_SkipNANDVerification(dev)) {
++      if (chunkValid && !yaffs_SkipNANDVerification(dev)) {
+               yaffs_ExtendedTags tags;
+               yaffs_ObjectHeader *oh;
+-              __u8 *buffer = yaffs_GetTempBuffer(dev,__LINE__);
++              __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
+ 
+               oh = (yaffs_ObjectHeader *)buffer;
+ 
+-              yaffs_ReadChunkWithTagsFromNAND(dev, obj->chunkId,buffer, &tags);
++              yaffs_ReadChunkWithTagsFromNAND(dev, obj->hdrChunk, buffer,
++                              &tags);
+ 
+-              yaffs_VerifyObjectHeader(obj,oh,&tags,1);
++              yaffs_VerifyObjectHeader(obj, oh, &tags, 1);
+ 
+-              yaffs_ReleaseTempBuffer(dev,buffer,__LINE__);
++              yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
+       }
+ 
+       /* Verify it has a parent */
+-      if(obj && !obj->fake &&
+-         (!obj->parent || obj->parent->myDev != dev)){
+-         T(YAFFS_TRACE_VERIFY,
+-         (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
+-         obj->objectId,obj->parent));
++      if (obj && !obj->fake &&
++                      (!obj->parent || obj->parent->myDev != dev)) {
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
++                      obj->objectId, obj->parent));
+       }
+ 
+       /* Verify parent is a directory */
+-      if(obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY){
+-         T(YAFFS_TRACE_VERIFY,
+-         (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
+-         obj->objectId,obj->parent->variantType));
++      if (obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
++                      obj->objectId, obj->parent->variantType));
+       }
+ 
+-      switch(obj->variantType){
++      switch (obj->variantType) {
+       case YAFFS_OBJECT_TYPE_FILE:
+               yaffs_VerifyFile(obj);
+               break;
+@@ -818,33 +825,30 @@ static void yaffs_VerifyObject(yaffs_Obj
+       default:
+               T(YAFFS_TRACE_VERIFY,
+               (TSTR("Obj %d has illegaltype %d"TENDSTR),
+-              obj->objectId,obj->variantType));
++              obj->objectId, obj->variantType));
+               break;
+       }
+-
+-
+ }
+ 
+ static void yaffs_VerifyObjects(yaffs_Device *dev)
+ {
+       yaffs_Object *obj;
+       int i;
+-      struct list_head *lh;
++      struct ylist_head *lh;
+ 
+-      if(yaffs_SkipVerification(dev))
++      if (yaffs_SkipVerification(dev))
+               return;
+ 
+       /* Iterate through the objects in each hash entry */
+ 
+-       for(i = 0; i <  YAFFS_NOBJECT_BUCKETS; i++){
+-              list_for_each(lh, &dev->objectBucket[i].list) {
++      for (i = 0; i <  YAFFS_NOBJECT_BUCKETS; i++) {
++              ylist_for_each(lh, &dev->objectBucket[i].list) {
+                       if (lh) {
+-                              obj = list_entry(lh, yaffs_Object, hashLink);
++                              obj = ylist_entry(lh, yaffs_Object, hashLink);
+                               yaffs_VerifyObject(obj);
+                       }
+               }
+-       }
+-
++      }
+ }
+ 
+ 
+@@ -855,19 +859,20 @@ static void yaffs_VerifyObjects(yaffs_De
+ static Y_INLINE int yaffs_HashFunction(int n)
+ {
+       n = abs(n);
+-      return (n % YAFFS_NOBJECT_BUCKETS);
++      return n % YAFFS_NOBJECT_BUCKETS;
+ }
+ 
+ /*
+- * Access functions to useful fake objects
++ * Access functions to useful fake objects.
++ * Note that root might have a presence in NAND if permissions are set.
+  */
+ 
+-yaffs_Object *yaffs_Root(yaffs_Device * dev)
++yaffs_Object *yaffs_Root(yaffs_Device *dev)
+ {
+       return dev->rootDir;
+ }
+ 
+-yaffs_Object *yaffs_LostNFound(yaffs_Device * dev)
++yaffs_Object *yaffs_LostNFound(yaffs_Device *dev)
+ {
+       return dev->lostNFoundDir;
+ }
+@@ -877,7 +882,7 @@ yaffs_Object *yaffs_LostNFound(yaffs_Dev
+  *  Erased NAND checking functions
+  */
+ 
+-int yaffs_CheckFF(__u8 * buffer, int nBytes)
++int yaffs_CheckFF(__u8 *buffer, int nBytes)
+ {
+       /* Horrible, slow implementation */
+       while (nBytes--) {
+@@ -889,9 +894,8 @@ int yaffs_CheckFF(__u8 * buffer, int nBy
+ }
+ 
+ static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
+-                                int chunkInNAND)
++                              int chunkInNAND)
+ {
+-
+       int retval = YAFFS_OK;
+       __u8 *data = yaffs_GetTempBuffer(dev, __LINE__);
+       yaffs_ExtendedTags tags;
+@@ -899,10 +903,9 @@ static int yaffs_CheckChunkErased(struct
+ 
+       result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags);
+ 
+-      if(tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR)
++      if (tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR)
+               retval = YAFFS_FAIL;
+ 
+-
+       if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) {
+               T(YAFFS_TRACE_NANDACCESS,
+                 (TSTR("Chunk %d not erased" TENDSTR), chunkInNAND));
+@@ -915,11 +918,10 @@ static int yaffs_CheckChunkErased(struct
+ 
+ }
+ 
+-
+ static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
+-                                           const __u8 * data,
+-                                           yaffs_ExtendedTags * tags,
+-                                           int useReserve)
++                                      const __u8 *data,
++                                      yaffs_ExtendedTags *tags,
++                                      int useReserve)
+ {
+       int attempts = 0;
+       int writeOk = 0;
+@@ -972,7 +974,7 @@ static int yaffs_WriteNewChunkWithTagsTo
+                       erasedOk = yaffs_CheckChunkErased(dev, chunk);
+                       if (erasedOk != YAFFS_OK) {
+                               T(YAFFS_TRACE_ERROR,
+-                              (TSTR ("**>> yaffs chunk %d was not erased"
++                              (TSTR("**>> yaffs chunk %d was not erased"
+                               TENDSTR), chunk));
+ 
+                               /* try another chunk */
+@@ -992,7 +994,11 @@ static int yaffs_WriteNewChunkWithTagsTo
+               /* Copy the data into the robustification buffer */
+               yaffs_HandleWriteChunkOk(dev, chunk, data, tags);
+ 
+-      } while (writeOk != YAFFS_OK && attempts < yaffs_wr_attempts);
++      } while (writeOk != YAFFS_OK &&
++              (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts));
++
++      if (!writeOk)
++              chunk = -1;
+ 
+       if (attempts > 1) {
+               T(YAFFS_TRACE_ERROR,
+@@ -1009,13 +1015,35 @@ static int yaffs_WriteNewChunkWithTagsTo
+  * Block retiring for handling a broken block.
+  */
+ 
+-static void yaffs_RetireBlock(yaffs_Device * dev, int blockInNAND)
++static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND)
+ {
+       yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
+ 
+       yaffs_InvalidateCheckpoint(dev);
+ 
+-      yaffs_MarkBlockBad(dev, blockInNAND);
++      if (yaffs_MarkBlockBad(dev, blockInNAND) != YAFFS_OK) {
++              if (yaffs_EraseBlockInNAND(dev, blockInNAND) != YAFFS_OK) {
++                      T(YAFFS_TRACE_ALWAYS, (TSTR(
++                              "yaffs: Failed to mark bad and erase block %d"
++                              TENDSTR), blockInNAND));
++              } else {
++                      yaffs_ExtendedTags tags;
++                      int chunkId = blockInNAND * dev->nChunksPerBlock;
++
++                      __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
++
++                      memset(buffer, 0xff, dev->nDataBytesPerChunk);
++                      yaffs_InitialiseTags(&tags);
++                      tags.sequenceNumber = YAFFS_SEQUENCE_BAD_BLOCK;
++                      if (dev->writeChunkWithTagsToNAND(dev, chunkId -
++                              dev->chunkOffset, buffer, &tags) != YAFFS_OK)
++                              T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to "
++                                      TCONT("write bad block marker to block %d")
++                                      TENDSTR), blockInNAND));
++
++                      yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
++              }
++      }
+ 
+       bi->blockState = YAFFS_BLOCK_STATE_DEAD;
+       bi->gcPrioritise = 0;
+@@ -1029,49 +1057,45 @@ static void yaffs_RetireBlock(yaffs_Devi
+  *
+  */
+ 
+-static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
+-                                   const __u8 * data,
+-                                   const yaffs_ExtendedTags * tags)
++static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
++                              const __u8 *data,
++                              const yaffs_ExtendedTags *tags)
+ {
+ }
+ 
+-static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
+-                                  const yaffs_ExtendedTags * tags)
++static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
++                              const yaffs_ExtendedTags *tags)
+ {
+ }
+ 
+ void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi)
+ {
+-      if(!bi->gcPrioritise){
++      if (!bi->gcPrioritise) {
+               bi->gcPrioritise = 1;
+               dev->hasPendingPrioritisedGCs = 1;
+-              bi->chunkErrorStrikes ++;
++              bi->chunkErrorStrikes++;
+ 
+-              if(bi->chunkErrorStrikes > 3){
++              if (bi->chunkErrorStrikes > 3) {
+                       bi->needsRetiring = 1; /* Too many stikes, so retire this */
+                       T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR)));
+ 
+               }
+-
+       }
+ }
+ 
+-static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND, int erasedOk)
++static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND,
++              int erasedOk)
+ {
+-
+       int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
+       yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
+ 
+-      yaffs_HandleChunkError(dev,bi);
++      yaffs_HandleChunkError(dev, bi);
+ 
+-
+-      if(erasedOk ) {
++      if (erasedOk) {
+               /* Was an actual write failure, so mark the block for retirement  */
+               bi->needsRetiring = 1;
+               T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+                 (TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND));
+-
+-
+       }
+ 
+       /* Delete the chunk */
+@@ -1081,12 +1105,12 @@ static void yaffs_HandleWriteChunkError(
+ 
+ /*---------------- Name handling functions ------------*/
+ 
+-static __u16 yaffs_CalcNameSum(const YCHAR * name)
++static __u16 yaffs_CalcNameSum(const YCHAR *name)
+ {
+       __u16 sum = 0;
+       __u16 i = 1;
+ 
+-      YUCHAR *bname = (YUCHAR *) name;
++      const YUCHAR *bname = (const YUCHAR *) name;
+       if (bname) {
+               while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) {
+ 
+@@ -1102,14 +1126,14 @@ static __u16 yaffs_CalcNameSum(const YCH
+       return sum;
+ }
+ 
+-static void yaffs_SetObjectName(yaffs_Object * obj, const YCHAR * name)
++static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name)
+ {
+ #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
+-      if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH) {
++      memset(obj->shortName, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1));
++      if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH)
+               yaffs_strcpy(obj->shortName, name);
+-      } else {
++      else
+               obj->shortName[0] = _Y('\0');
+-      }
+ #endif
+       obj->sum = yaffs_CalcNameSum(name);
+ }
+@@ -1126,7 +1150,7 @@ static void yaffs_SetObjectName(yaffs_Ob
+  * Don't use this function directly
+  */
+ 
+-static int yaffs_CreateTnodes(yaffs_Device * dev, int nTnodes)
++static int yaffs_CreateTnodes(yaffs_Device *dev, int nTnodes)
+ {
+       int i;
+       int tnodeSize;
+@@ -1143,6 +1167,9 @@ static int yaffs_CreateTnodes(yaffs_Devi
+        * Must be a multiple of 32-bits  */
+       tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+ 
++      if (tnodeSize < sizeof(yaffs_Tnode))
++              tnodeSize = sizeof(yaffs_Tnode);
++
+       /* make these things */
+ 
+       newTnodes = YMALLOC(nTnodes * tnodeSize);
+@@ -1150,7 +1177,7 @@ static int yaffs_CreateTnodes(yaffs_Devi
+ 
+       if (!newTnodes) {
+               T(YAFFS_TRACE_ERROR,
+-                (TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
++                      (TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
+               return YAFFS_FAIL;
+       }
+ 
+@@ -1170,7 +1197,7 @@ static int yaffs_CreateTnodes(yaffs_Devi
+       dev->freeTnodes = newTnodes;
+ #else
+       /* New hookup for wide tnodes */
+-      for(i = 0; i < nTnodes -1; i++) {
++      for (i = 0; i < nTnodes - 1; i++) {
+               curr = (yaffs_Tnode *) &mem[i * tnodeSize];
+               next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize];
+               curr->internal[0] = next;
+@@ -1197,7 +1224,6 @@ static int yaffs_CreateTnodes(yaffs_Devi
+                 (TSTR
+                  ("yaffs: Could not add tnodes to management list" TENDSTR)));
+                  return YAFFS_FAIL;
+-
+       } else {
+               tnl->tnodes = newTnodes;
+               tnl->next = dev->allocatedTnodeList;
+@@ -1211,14 +1237,13 @@ static int yaffs_CreateTnodes(yaffs_Devi
+ 
+ /* GetTnode gets us a clean tnode. Tries to make allocate more if we run out */
+ 
+-static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device * dev)
++static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device *dev)
+ {
+       yaffs_Tnode *tn = NULL;
+ 
+       /* If there are none left make more */
+-      if (!dev->freeTnodes) {
++      if (!dev->freeTnodes)
+               yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES);
+-      }
+ 
+       if (dev->freeTnodes) {
+               tn = dev->freeTnodes;
+@@ -1233,21 +1258,27 @@ static yaffs_Tnode *yaffs_GetTnodeRaw(ya
+               dev->nFreeTnodes--;
+       }
+ 
++      dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
++
+       return tn;
+ }
+ 
+-static yaffs_Tnode *yaffs_GetTnode(yaffs_Device * dev)
++static yaffs_Tnode *yaffs_GetTnode(yaffs_Device *dev)
+ {
+       yaffs_Tnode *tn = yaffs_GetTnodeRaw(dev);
++      int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+ 
+-      if(tn)
+-              memset(tn, 0, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
++      if (tnodeSize < sizeof(yaffs_Tnode))
++              tnodeSize = sizeof(yaffs_Tnode);
++
++      if (tn)
++              memset(tn, 0, tnodeSize);
+ 
+       return tn;
+ }
+ 
+ /* FreeTnode frees up a tnode and puts it back on the free list */
+-static void yaffs_FreeTnode(yaffs_Device * dev, yaffs_Tnode * tn)
++static void yaffs_FreeTnode(yaffs_Device *dev, yaffs_Tnode *tn)
+ {
+       if (tn) {
+ #ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
+@@ -1262,9 +1293,10 @@ static void yaffs_FreeTnode(yaffs_Device
+               dev->freeTnodes = tn;
+               dev->nFreeTnodes++;
+       }
++      dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+ }
+ 
+-static void yaffs_DeinitialiseTnodes(yaffs_Device * dev)
++static void yaffs_DeinitialiseTnodes(yaffs_Device *dev)
+ {
+       /* Free the list of allocated tnodes */
+       yaffs_TnodeList *tmp;
+@@ -1282,71 +1314,72 @@ static void yaffs_DeinitialiseTnodes(yaf
+       dev->nFreeTnodes = 0;
+ }
+ 
+-static void yaffs_InitialiseTnodes(yaffs_Device * dev)
++static void yaffs_InitialiseTnodes(yaffs_Device *dev)
+ {
+       dev->allocatedTnodeList = NULL;
+       dev->freeTnodes = NULL;
+       dev->nFreeTnodes = 0;
+       dev->nTnodesCreated = 0;
+-
+ }
+ 
+ 
+-void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos, unsigned val)
++void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos,
++              unsigned val)
+ {
+-  __u32 *map = (__u32 *)tn;
+-  __u32 bitInMap;
+-  __u32 bitInWord;
+-  __u32 wordInMap;
+-  __u32 mask;
++      __u32 *map = (__u32 *)tn;
++      __u32 bitInMap;
++      __u32 bitInWord;
++      __u32 wordInMap;
++      __u32 mask;
+ 
+-  pos &= YAFFS_TNODES_LEVEL0_MASK;
+-  val >>= dev->chunkGroupBits;
++      pos &= YAFFS_TNODES_LEVEL0_MASK;
++      val >>= dev->chunkGroupBits;
+ 
+-  bitInMap = pos * dev->tnodeWidth;
+-  wordInMap = bitInMap /32;
+-  bitInWord = bitInMap & (32 -1);
++      bitInMap = pos * dev->tnodeWidth;
++      wordInMap = bitInMap / 32;
++      bitInWord = bitInMap & (32 - 1);
+ 
+-  mask = dev->tnodeMask << bitInWord;
++      mask = dev->tnodeMask << bitInWord;
+ 
+-  map[wordInMap] &= ~mask;
+-  map[wordInMap] |= (mask & (val << bitInWord));
++      map[wordInMap] &= ~mask;
++      map[wordInMap] |= (mask & (val << bitInWord));
+ 
+-  if(dev->tnodeWidth > (32-bitInWord)) {
+-    bitInWord = (32 - bitInWord);
+-    wordInMap++;;
+-    mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord);
+-    map[wordInMap] &= ~mask;
+-    map[wordInMap] |= (mask & (val >> bitInWord));
+-  }
++      if (dev->tnodeWidth > (32 - bitInWord)) {
++              bitInWord = (32 - bitInWord);
++              wordInMap++;;
++              mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord);
++              map[wordInMap] &= ~mask;
++              map[wordInMap] |= (mask & (val >> bitInWord));
++      }
+ }
+ 
+-static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos)
++static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
++              unsigned pos)
+ {
+-  __u32 *map = (__u32 *)tn;
+-  __u32 bitInMap;
+-  __u32 bitInWord;
+-  __u32 wordInMap;
+-  __u32 val;
++      __u32 *map = (__u32 *)tn;
++      __u32 bitInMap;
++      __u32 bitInWord;
++      __u32 wordInMap;
++      __u32 val;
+ 
+-  pos &= YAFFS_TNODES_LEVEL0_MASK;
++      pos &= YAFFS_TNODES_LEVEL0_MASK;
+ 
+-  bitInMap = pos * dev->tnodeWidth;
+-  wordInMap = bitInMap /32;
+-  bitInWord = bitInMap & (32 -1);
++      bitInMap = pos * dev->tnodeWidth;
++      wordInMap = bitInMap / 32;
++      bitInWord = bitInMap & (32 - 1);
+ 
+-  val = map[wordInMap] >> bitInWord;
++      val = map[wordInMap] >> bitInWord;
+ 
+-  if(dev->tnodeWidth > (32-bitInWord)) {
+-    bitInWord = (32 - bitInWord);
+-    wordInMap++;;
+-    val |= (map[wordInMap] << bitInWord);
+-  }
++      if      (dev->tnodeWidth > (32 - bitInWord)) {
++              bitInWord = (32 - bitInWord);
++              wordInMap++;;
++              val |= (map[wordInMap] << bitInWord);
++      }
+ 
+-  val &= dev->tnodeMask;
+-  val <<= dev->chunkGroupBits;
++      val &= dev->tnodeMask;
++      val <<= dev->chunkGroupBits;
+ 
+-  return val;
++      return val;
+ }
+ 
+ /* ------------------- End of individual tnode manipulation -----------------*/
+@@ -1357,24 +1390,21 @@ static __u32 yaffs_GetChunkGroupBase(yaf
+  */
+ 
+ /* FindLevel0Tnode finds the level 0 tnode, if one exists. */
+-static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device * dev,
+-                                        yaffs_FileStructure * fStruct,
+-                                        __u32 chunkId)
++static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev,
++                                      yaffs_FileStructure *fStruct,
++                                      __u32 chunkId)
+ {
+-
+       yaffs_Tnode *tn = fStruct->top;
+       __u32 i;
+       int requiredTallness;
+       int level = fStruct->topLevel;
+ 
+       /* Check sane level and chunk Id */
+-      if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) {
++      if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL)
+               return NULL;
+-      }
+ 
+-      if (chunkId > YAFFS_MAX_CHUNK_ID) {
++      if (chunkId > YAFFS_MAX_CHUNK_ID)
+               return NULL;
+-      }
+ 
+       /* First check we're tall enough (ie enough topLevel) */
+ 
+@@ -1385,22 +1415,17 @@ static yaffs_Tnode *yaffs_FindLevel0Tnod
+               requiredTallness++;
+       }
+ 
+-      if (requiredTallness > fStruct->topLevel) {
+-              /* Not tall enough, so we can't find it, return NULL. */
+-              return NULL;
+-      }
++      if (requiredTallness > fStruct->topLevel)
++              return NULL; /* Not tall enough, so we can't find it */
+ 
+       /* Traverse down to level 0 */
+       while (level > 0 && tn) {
+-              tn = tn->
+-                  internal[(chunkId >>
+-                             ( YAFFS_TNODES_LEVEL0_BITS +
+-                               (level - 1) *
+-                               YAFFS_TNODES_INTERNAL_BITS)
+-                            ) &
+-                           YAFFS_TNODES_INTERNAL_MASK];
++              tn = tn->internal[(chunkId >>
++                      (YAFFS_TNODES_LEVEL0_BITS +
++                              (level - 1) *
++                              YAFFS_TNODES_INTERNAL_BITS)) &
++                      YAFFS_TNODES_INTERNAL_MASK];
+               level--;
+-
+       }
+ 
+       return tn;
+@@ -1417,12 +1442,11 @@ static yaffs_Tnode *yaffs_FindLevel0Tnod
+  *  be plugged into the ttree.
+  */
+ 
+-static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device * dev,
+-                                             yaffs_FileStructure * fStruct,
+-                                             __u32 chunkId,
+-                                             yaffs_Tnode *passedTn)
++static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev,
++                                      yaffs_FileStructure *fStruct,
++                                      __u32 chunkId,
++                                      yaffs_Tnode *passedTn)
+ {
+-
+       int requiredTallness;
+       int i;
+       int l;
+@@ -1432,13 +1456,11 @@ static yaffs_Tnode *yaffs_AddOrFindLevel
+ 
+ 
+       /* Check sane level and page Id */
+-      if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL) {
++      if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL)
+               return NULL;
+-      }
+ 
+-      if (chunkId > YAFFS_MAX_CHUNK_ID) {
++      if (chunkId > YAFFS_MAX_CHUNK_ID)
+               return NULL;
+-      }
+ 
+       /* First check we're tall enough (ie enough topLevel) */
+ 
+@@ -1451,7 +1473,7 @@ static yaffs_Tnode *yaffs_AddOrFindLevel
+ 
+ 
+       if (requiredTallness > fStruct->topLevel) {
+-              /* Not tall enough,gotta make the tree taller */
++              /* Not tall enough, gotta make the tree taller */
+               for (i = fStruct->topLevel; i < requiredTallness; i++) {
+ 
+                       tn = yaffs_GetTnode(dev);
+@@ -1473,27 +1495,27 @@ static yaffs_Tnode *yaffs_AddOrFindLevel
+       l = fStruct->topLevel;
+       tn = fStruct->top;
+ 
+-      if(l > 0) {
++      if (l > 0) {
+               while (l > 0 && tn) {
+                       x = (chunkId >>
+-                           ( YAFFS_TNODES_LEVEL0_BITS +
++                           (YAFFS_TNODES_LEVEL0_BITS +
+                             (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) &
+                           YAFFS_TNODES_INTERNAL_MASK;
+ 
+ 
+-                      if((l>1) && !tn->internal[x]){
++                      if ((l > 1) && !tn->internal[x]) {
+                               /* Add missing non-level-zero tnode */
+                               tn->internal[x] = yaffs_GetTnode(dev);
+ 
+-                      } else if(l == 1) {
++                      } else if (l == 1) {
+                               /* Looking from level 1 at level 0 */
+-                              if (passedTn) {
++                              if (passedTn) {
+                                       /* If we already have one, then release it.*/
+-                                      if(tn->internal[x])
+-                                              yaffs_FreeTnode(dev,tn->internal[x]);
++                                      if (tn->internal[x])
++                                              yaffs_FreeTnode(dev, tn->internal[x]);
+                                       tn->internal[x] = passedTn;
+ 
+-                              } else if(!tn->internal[x]) {
++                              } else if (!tn->internal[x]) {
+                                       /* Don't have one, none passed in */
+                                       tn->internal[x] = yaffs_GetTnode(dev);
+                               }
+@@ -1504,31 +1526,29 @@ static yaffs_Tnode *yaffs_AddOrFindLevel
+               }
+       } else {
+               /* top is level 0 */
+-              if(passedTn) {
+-                      memcpy(tn,passedTn,(dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
+-                      yaffs_FreeTnode(dev,passedTn);
++              if (passedTn) {
++                      memcpy(tn, passedTn, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
++                      yaffs_FreeTnode(dev, passedTn);
+               }
+       }
+ 
+       return tn;
+ }
+ 
+-static int yaffs_FindChunkInGroup(yaffs_Device * dev, int theChunk,
+-                                yaffs_ExtendedTags * tags, int objectId,
+-                                int chunkInInode)
++static int yaffs_FindChunkInGroup(yaffs_Device *dev, int theChunk,
++                              yaffs_ExtendedTags *tags, int objectId,
++                              int chunkInInode)
+ {
+       int j;
+ 
+       for (j = 0; theChunk && j < dev->chunkGroupSize; j++) {
+-              if (yaffs_CheckChunkBit
+-                  (dev, theChunk / dev->nChunksPerBlock,
+-                   theChunk % dev->nChunksPerBlock)) {
++              if (yaffs_CheckChunkBit(dev, theChunk / dev->nChunksPerBlock,
++                              theChunk % dev->nChunksPerBlock)) {
+                       yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL,
+                                                       tags);
+                       if (yaffs_TagsMatch(tags, objectId, chunkInInode)) {
+                               /* found it; */
+                               return theChunk;
+-
+                       }
+               }
+               theChunk++;
+@@ -1543,7 +1563,7 @@ static int yaffs_FindChunkInGroup(yaffs_
+  * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete.
+  */
+ 
+-static int yaffs_DeleteWorker(yaffs_Object * in, yaffs_Tnode * tn, __u32 level,
++static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
+                             int chunkOffset, int *limit)
+ {
+       int i;
+@@ -1557,7 +1577,6 @@ static int yaffs_DeleteWorker(yaffs_Obje
+ 
+       if (tn) {
+               if (level > 0) {
+-
+                       for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0;
+                            i--) {
+                               if (tn->internal[i]) {
+@@ -1565,17 +1584,17 @@ static int yaffs_DeleteWorker(yaffs_Obje
+                                               allDone = 0;
+                                       } else {
+                                               allDone =
+-                                                  yaffs_DeleteWorker(in,
+-                                                                     tn->
+-                                                                     internal
+-                                                                     [i],
+-                                                                     level -
+-                                                                     1,
+-                                                                     (chunkOffset
++                                                      yaffs_DeleteWorker(in,
++                                                              tn->
++                                                              internal
++                                                              [i],
++                                                              level -
++                                                              1,
++                                                              (chunkOffset
+                                                                       <<
+                                                                       YAFFS_TNODES_INTERNAL_BITS)
+-                                                                     + i,
+-                                                                     limit);
++                                                              + i,
++                                                              limit);
+                                       }
+                                       if (allDone) {
+                                               yaffs_FreeTnode(dev,
+@@ -1584,27 +1603,25 @@ static int yaffs_DeleteWorker(yaffs_Obje
+                                               tn->internal[i] = NULL;
+                                       }
+                               }
+-
+                       }
+                       return (allDone) ? 1 : 0;
+               } else if (level == 0) {
+                       int hitLimit = 0;
+ 
+                       for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit;
+-                           i--) {
+-                              theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
++                                      i--) {
++                              theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
+                               if (theChunk) {
+ 
+-                                      chunkInInode =
+-                                          (chunkOffset <<
+-                                           YAFFS_TNODES_LEVEL0_BITS) + i;
++                                      chunkInInode = (chunkOffset <<
++                                              YAFFS_TNODES_LEVEL0_BITS) + i;
+ 
+                                       foundChunk =
+-                                          yaffs_FindChunkInGroup(dev,
+-                                                                 theChunk,
+-                                                                 &tags,
+-                                                                 in->objectId,
+-                                                                 chunkInInode);
++                                              yaffs_FindChunkInGroup(dev,
++                                                              theChunk,
++                                                              &tags,
++                                                              in->objectId,
++                                                              chunkInInode);
+ 
+                                       if (foundChunk > 0) {
+                                               yaffs_DeleteChunk(dev,
+@@ -1613,14 +1630,13 @@ static int yaffs_DeleteWorker(yaffs_Obje
+                                               in->nDataChunks--;
+                                               if (limit) {
+                                                       *limit = *limit - 1;
+-                                                      if (*limit <= 0) {
++                                                      if (*limit <= 0)
+                                                               hitLimit = 1;
+-                                                      }
+                                               }
+ 
+                                       }
+ 
+-                                      yaffs_PutLevel0Tnode(dev,tn,i,0);
++                                      yaffs_PutLevel0Tnode(dev, tn, i, 0);
+                               }
+ 
+                       }
+@@ -1634,9 +1650,8 @@ static int yaffs_DeleteWorker(yaffs_Obje
+ 
+ }
+ 
+-static void yaffs_SoftDeleteChunk(yaffs_Device * dev, int chunk)
++static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk)
+ {
+-
+       yaffs_BlockInfo *theBlock;
+ 
+       T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk));
+@@ -1654,7 +1669,7 @@ static void yaffs_SoftDeleteChunk(yaffs_
+  * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted.
+  */
+ 
+-static int yaffs_SoftDeleteWorker(yaffs_Object * in, yaffs_Tnode * tn,
++static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn,
+                                 __u32 level, int chunkOffset)
+ {
+       int i;
+@@ -1691,14 +1706,14 @@ static int yaffs_SoftDeleteWorker(yaffs_
+               } else if (level == 0) {
+ 
+                       for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) {
+-                              theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
++                              theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
+                               if (theChunk) {
+                                       /* Note this does not find the real chunk, only the chunk group.
+                                        * We make an assumption that a chunk group is not larger than
+                                        * a block.
+                                        */
+                                       yaffs_SoftDeleteChunk(dev, theChunk);
+-                                      yaffs_PutLevel0Tnode(dev,tn,i,0);
++                                      yaffs_PutLevel0Tnode(dev, tn, i, 0);
+                               }
+ 
+                       }
+@@ -1712,7 +1727,7 @@ static int yaffs_SoftDeleteWorker(yaffs_
+ 
+ }
+ 
+-static void yaffs_SoftDeleteFile(yaffs_Object * obj)
++static void yaffs_SoftDeleteFile(yaffs_Object *obj)
+ {
+       if (obj->deleted &&
+           obj->variantType == YAFFS_OBJECT_TYPE_FILE && !obj->softDeleted) {
+@@ -1746,8 +1761,8 @@ static void yaffs_SoftDeleteFile(yaffs_O
+  * by a special case.
+  */
+ 
+-static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device * dev, yaffs_Tnode * tn,
+-                                    __u32 level, int del0)
++static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn,
++                              __u32 level, int del0)
+ {
+       int i;
+       int hasData;
+@@ -1763,9 +1778,8 @@ static yaffs_Tnode *yaffs_PruneWorker(ya
+                                                     (i == 0) ? del0 : 1);
+                       }
+ 
+-                      if (tn->internal[i]) {
++                      if (tn->internal[i])
+                               hasData++;
+-                      }
+               }
+ 
+               if (hasData == 0 && del0) {
+@@ -1781,8 +1795,8 @@ static yaffs_Tnode *yaffs_PruneWorker(ya
+ 
+ }
+ 
+-static int yaffs_PruneFileStructure(yaffs_Device * dev,
+-                                  yaffs_FileStructure * fStruct)
++static int yaffs_PruneFileStructure(yaffs_Device *dev,
++                              yaffs_FileStructure *fStruct)
+ {
+       int i;
+       int hasData;
+@@ -1805,9 +1819,8 @@ static int yaffs_PruneFileStructure(yaff
+ 
+                       hasData = 0;
+                       for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) {
+-                              if (tn->internal[i]) {
++                              if (tn->internal[i])
+                                       hasData++;
+-                              }
+                       }
+ 
+                       if (!hasData) {
+@@ -1828,7 +1841,7 @@ static int yaffs_PruneFileStructure(yaff
+ /* yaffs_CreateFreeObjects creates a bunch more objects and
+  * adds them to the object free list.
+  */
+-static int yaffs_CreateFreeObjects(yaffs_Device * dev, int nObjects)
++static int yaffs_CreateFreeObjects(yaffs_Device *dev, int nObjects)
+ {
+       int i;
+       yaffs_Object *newObjects;
+@@ -1842,9 +1855,9 @@ static int yaffs_CreateFreeObjects(yaffs
+       list = YMALLOC(sizeof(yaffs_ObjectList));
+ 
+       if (!newObjects || !list) {
+-              if(newObjects)
++              if (newObjects)
+                       YFREE(newObjects);
+-              if(list)
++              if (list)
+                       YFREE(list);
+               T(YAFFS_TRACE_ALLOCATE,
+                 (TSTR("yaffs: Could not allocate more objects" TENDSTR)));
+@@ -1854,7 +1867,7 @@ static int yaffs_CreateFreeObjects(yaffs
+       /* Hook them into the free list */
+       for (i = 0; i < nObjects - 1; i++) {
+               newObjects[i].siblings.next =
+-                  (struct list_head *)(&newObjects[i + 1]);
++                              (struct ylist_head *)(&newObjects[i + 1]);
+       }
+ 
+       newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects;
+@@ -1873,85 +1886,109 @@ static int yaffs_CreateFreeObjects(yaffs
+ 
+ 
+ /* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */
+-static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device * dev)
++static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device *dev)
+ {
+       yaffs_Object *tn = NULL;
+ 
++#ifdef VALGRIND_TEST
++      tn = YMALLOC(sizeof(yaffs_Object));
++#else
+       /* If there are none left make more */
+-      if (!dev->freeObjects) {
++      if (!dev->freeObjects)
+               yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS);
+-      }
+ 
+       if (dev->freeObjects) {
+               tn = dev->freeObjects;
+               dev->freeObjects =
+-                  (yaffs_Object *) (dev->freeObjects->siblings.next);
++                      (yaffs_Object *) (dev->freeObjects->siblings.next);
+               dev->nFreeObjects--;
+-
++      }
++#endif
++      if (tn) {
+               /* Now sweeten it up... */
+ 
+               memset(tn, 0, sizeof(yaffs_Object));
++              tn->beingCreated = 1;
++
+               tn->myDev = dev;
+-              tn->chunkId = -1;
++              tn->hdrChunk = 0;
+               tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN;
+-              INIT_LIST_HEAD(&(tn->hardLinks));
+-              INIT_LIST_HEAD(&(tn->hashLink));
+-              INIT_LIST_HEAD(&tn->siblings);
++              YINIT_LIST_HEAD(&(tn->hardLinks));
++              YINIT_LIST_HEAD(&(tn->hashLink));
++              YINIT_LIST_HEAD(&tn->siblings);
++
++
++              /* Now make the directory sane */
++              if (dev->rootDir) {
++                      tn->parent = dev->rootDir;
++                      ylist_add(&(tn->siblings), &dev->rootDir->variant.directoryVariant.children);
++              }
+ 
+               /* Add it to the lost and found directory.
+                * NB Can't put root or lostNFound in lostNFound so
+                * check if lostNFound exists first
+                */
+-              if (dev->lostNFoundDir) {
++              if (dev->lostNFoundDir)
+                       yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn);
+-              }
++
++              tn->beingCreated = 0;
+       }
+ 
++      dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
++
+       return tn;
+ }
+ 
+-static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device * dev, int number,
++static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device *dev, int number,
+                                              __u32 mode)
+ {
+ 
+       yaffs_Object *obj =
+           yaffs_CreateNewObject(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY);
+       if (obj) {
+-              obj->fake = 1;          /* it is fake so it has no NAND presence... */
++              obj->fake = 1;          /* it is fake so it might have no NAND presence... */
+               obj->renameAllowed = 0; /* ... and we're not allowed to rename it... */
+               obj->unlinkAllowed = 0; /* ... or unlink it */
+               obj->deleted = 0;
+               obj->unlinked = 0;
+               obj->yst_mode = mode;
+               obj->myDev = dev;
+-              obj->chunkId = 0;       /* Not a valid chunk. */
++              obj->hdrChunk = 0;      /* Not a valid chunk. */
+       }
+ 
+       return obj;
+ 
+ }
+ 
+-static void yaffs_UnhashObject(yaffs_Object * tn)
++static void yaffs_UnhashObject(yaffs_Object *tn)
+ {
+       int bucket;
+       yaffs_Device *dev = tn->myDev;
+ 
+       /* If it is still linked into the bucket list, free from the list */
+-      if (!list_empty(&tn->hashLink)) {
+-              list_del_init(&tn->hashLink);
++      if (!ylist_empty(&tn->hashLink)) {
++              ylist_del_init(&tn->hashLink);
+               bucket = yaffs_HashFunction(tn->objectId);
+               dev->objectBucket[bucket].count--;
+       }
+-
+ }
+ 
+ /*  FreeObject frees up a Object and puts it back on the free list */
+-static void yaffs_FreeObject(yaffs_Object * tn)
++static void yaffs_FreeObject(yaffs_Object *tn)
+ {
+-
+       yaffs_Device *dev = tn->myDev;
+ 
+-#ifdef  __KERNEL__
++#ifdef __KERNEL__
++      T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), tn, tn->myInode));
++#endif
++
++      if (tn->parent)
++              YBUG();
++      if (!ylist_empty(&tn->siblings))
++              YBUG();
++
++
++#ifdef __KERNEL__
+       if (tn->myInode) {
+               /* We're still hooked up to a cached inode.
+                * Don't delete now, but mark for later deletion
+@@ -1963,24 +2000,28 @@ static void yaffs_FreeObject(yaffs_Objec
+ 
+       yaffs_UnhashObject(tn);
+ 
++#ifdef VALGRIND_TEST
++      YFREE(tn);
++#else
+       /* Link into the free list. */
+-      tn->siblings.next = (struct list_head *)(dev->freeObjects);
++      tn->siblings.next = (struct ylist_head *)(dev->freeObjects);
+       dev->freeObjects = tn;
+       dev->nFreeObjects++;
++#endif
++      dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+ }
+ 
+ #ifdef __KERNEL__
+ 
+-void yaffs_HandleDeferedFree(yaffs_Object * obj)
++void yaffs_HandleDeferedFree(yaffs_Object *obj)
+ {
+-      if (obj->deferedFree) {
++      if (obj->deferedFree)
+               yaffs_FreeObject(obj);
+-      }
+ }
+ 
+ #endif
+ 
+-static void yaffs_DeinitialiseObjects(yaffs_Device * dev)
++static void yaffs_DeinitialiseObjects(yaffs_Device *dev)
+ {
+       /* Free the list of allocated Objects */
+ 
+@@ -1998,7 +2039,7 @@ static void yaffs_DeinitialiseObjects(ya
+       dev->nFreeObjects = 0;
+ }
+ 
+-static void yaffs_InitialiseObjects(yaffs_Device * dev)
++static void yaffs_InitialiseObjects(yaffs_Device *dev)
+ {
+       int i;
+ 
+@@ -2007,15 +2048,14 @@ static void yaffs_InitialiseObjects(yaff
+       dev->nFreeObjects = 0;
+ 
+       for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
+-              INIT_LIST_HEAD(&dev->objectBucket[i].list);
++              YINIT_LIST_HEAD(&dev->objectBucket[i].list);
+               dev->objectBucket[i].count = 0;
+       }
+-
+ }
+ 
+-static int yaffs_FindNiceObjectBucket(yaffs_Device * dev)
++static int yaffs_FindNiceObjectBucket(yaffs_Device *dev)
+ {
+-      static int x = 0;
++      static int x;
+       int i;
+       int l = 999;
+       int lowest = 999999;
+@@ -2049,7 +2089,7 @@ static int yaffs_FindNiceObjectBucket(ya
+       return l;
+ }
+ 
+-static int yaffs_CreateNewObjectNumber(yaffs_Device * dev)
++static int yaffs_CreateNewObjectNumber(yaffs_Device *dev)
+ {
+       int bucket = yaffs_FindNiceObjectBucket(dev);
+ 
+@@ -2058,7 +2098,7 @@ static int yaffs_CreateNewObjectNumber(y
+        */
+ 
+       int found = 0;
+-      struct list_head *i;
++      struct ylist_head *i;
+ 
+       __u32 n = (__u32) bucket;
+ 
+@@ -2068,41 +2108,38 @@ static int yaffs_CreateNewObjectNumber(y
+               found = 1;
+               n += YAFFS_NOBJECT_BUCKETS;
+               if (1 || dev->objectBucket[bucket].count > 0) {
+-                      list_for_each(i, &dev->objectBucket[bucket].list) {
++                      ylist_for_each(i, &dev->objectBucket[bucket].list) {
+                               /* If there is already one in the list */
+-                              if (i
+-                                  && list_entry(i, yaffs_Object,
+-                                                hashLink)->objectId == n) {
++                              if (i && ylist_entry(i, yaffs_Object,
++                                              hashLink)->objectId == n) {
+                                       found = 0;
+                               }
+                       }
+               }
+       }
+ 
+-
+       return n;
+ }
+ 
+-static void yaffs_HashObject(yaffs_Object * in)
++static void yaffs_HashObject(yaffs_Object *in)
+ {
+       int bucket = yaffs_HashFunction(in->objectId);
+       yaffs_Device *dev = in->myDev;
+ 
+-      list_add(&in->hashLink, &dev->objectBucket[bucket].list);
++      ylist_add(&in->hashLink, &dev->objectBucket[bucket].list);
+       dev->objectBucket[bucket].count++;
+-
+ }
+ 
+-yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number)
++yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number)
+ {
+       int bucket = yaffs_HashFunction(number);
+-      struct list_head *i;
++      struct ylist_head *i;
+       yaffs_Object *in;
+ 
+-      list_for_each(i, &dev->objectBucket[bucket].list) {
++      ylist_for_each(i, &dev->objectBucket[bucket].list) {
+               /* Look if it is in the list */
+               if (i) {
+-                      in = list_entry(i, yaffs_Object, hashLink);
++                      in = ylist_entry(i, yaffs_Object, hashLink);
+                       if (in->objectId == number) {
+ #ifdef __KERNEL__
+                               /* Don't tell the VFS about this one if it is defered free */
+@@ -2118,31 +2155,27 @@ yaffs_Object *yaffs_FindObjectByNumber(y
+       return NULL;
+ }
+ 
+-yaffs_Object *yaffs_CreateNewObject(yaffs_Device * dev, int number,
++yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
+                                   yaffs_ObjectType type)
+ {
+-
+       yaffs_Object *theObject;
+-      yaffs_Tnode *tn;
++      yaffs_Tnode *tn = NULL;
+ 
+-      if (number < 0) {
++      if (number < 0)
+               number = yaffs_CreateNewObjectNumber(dev);
+-      }
+ 
+       theObject = yaffs_AllocateEmptyObject(dev);
+-      if(!theObject)
++      if (!theObject)
+               return NULL;
+ 
+-      if(type == YAFFS_OBJECT_TYPE_FILE){
++      if (type == YAFFS_OBJECT_TYPE_FILE) {
+               tn = yaffs_GetTnode(dev);
+-              if(!tn){
++              if (!tn) {
+                       yaffs_FreeObject(theObject);
+                       return NULL;
+               }
+       }
+ 
+-
+-
+       if (theObject) {
+               theObject->fake = 0;
+               theObject->renameAllowed = 1;
+@@ -2171,8 +2204,8 @@ yaffs_Object *yaffs_CreateNewObject(yaff
+                       theObject->variant.fileVariant.top = tn;
+                       break;
+               case YAFFS_OBJECT_TYPE_DIRECTORY:
+-                      INIT_LIST_HEAD(&theObject->variant.directoryVariant.
+-                                     children);
++                      YINIT_LIST_HEAD(&theObject->variant.directoryVariant.
++                                      children);
+                       break;
+               case YAFFS_OBJECT_TYPE_SYMLINK:
+               case YAFFS_OBJECT_TYPE_HARDLINK:
+@@ -2188,32 +2221,30 @@ yaffs_Object *yaffs_CreateNewObject(yaff
+       return theObject;
+ }
+ 
+-static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device * dev,
++static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device *dev,
+                                                     int number,
+                                                     yaffs_ObjectType type)
+ {
+       yaffs_Object *theObject = NULL;
+ 
+-      if (number > 0) {
++      if (number > 0)
+               theObject = yaffs_FindObjectByNumber(dev, number);
+-      }
+ 
+-      if (!theObject) {
++      if (!theObject)
+               theObject = yaffs_CreateNewObject(dev, number, type);
+-      }
+ 
+       return theObject;
+ 
+ }
+ 
+ 
+-static YCHAR *yaffs_CloneString(const YCHAR * str)
++static YCHAR *yaffs_CloneString(const YCHAR *str)
+ {
+       YCHAR *newStr = NULL;
+ 
+       if (str && *str) {
+               newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR));
+-              if(newStr)
++              if (newStr)
+                       yaffs_strcpy(newStr, str);
+       }
+ 
+@@ -2229,29 +2260,31 @@ static YCHAR *yaffs_CloneString(const YC
+  */
+ 
+ static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type,
+-                                     yaffs_Object * parent,
+-                                     const YCHAR * name,
++                                     yaffs_Object *parent,
++                                     const YCHAR *name,
+                                      __u32 mode,
+                                      __u32 uid,
+                                      __u32 gid,
+-                                     yaffs_Object * equivalentObject,
+-                                     const YCHAR * aliasString, __u32 rdev)
++                                     yaffs_Object *equivalentObject,
++                                     const YCHAR *aliasString, __u32 rdev)
+ {
+       yaffs_Object *in;
+-      YCHAR *str;
++      YCHAR *str = NULL;
+ 
+       yaffs_Device *dev = parent->myDev;
+ 
+       /* Check if the entry exists. If it does then fail the call since we don't want a dup.*/
+-      if (yaffs_FindObjectByName(parent, name)) {
++      if (yaffs_FindObjectByName(parent, name))
+               return NULL;
+-      }
+ 
+       in = yaffs_CreateNewObject(dev, -1, type);
+ 
+-      if(type == YAFFS_OBJECT_TYPE_SYMLINK){
++      if (!in)
++              return YAFFS_FAIL;
++
++      if (type == YAFFS_OBJECT_TYPE_SYMLINK) {
+               str = yaffs_CloneString(aliasString);
+-              if(!str){
++              if (!str) {
+                       yaffs_FreeObject(in);
+                       return NULL;
+               }
+@@ -2260,7 +2293,7 @@ static yaffs_Object *yaffs_MknodObject(y
+ 
+ 
+       if (in) {
+-              in->chunkId = -1;
++              in->hdrChunk = 0;
+               in->valid = 1;
+               in->variantType = type;
+ 
+@@ -2293,10 +2326,10 @@ static yaffs_Object *yaffs_MknodObject(y
+                       break;
+               case YAFFS_OBJECT_TYPE_HARDLINK:
+                       in->variant.hardLinkVariant.equivalentObject =
+-                          equivalentObject;
++                              equivalentObject;
+                       in->variant.hardLinkVariant.equivalentObjectId =
+-                          equivalentObject->objectId;
+-                      list_add(&in->hardLinks, &equivalentObject->hardLinks);
++                              equivalentObject->objectId;
++                      ylist_add(&in->hardLinks, &equivalentObject->hardLinks);
+                       break;
+               case YAFFS_OBJECT_TYPE_FILE:
+               case YAFFS_OBJECT_TYPE_DIRECTORY:
+@@ -2308,7 +2341,7 @@ static yaffs_Object *yaffs_MknodObject(y
+ 
+               if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0) < 0) {
+                       /* Could not create the object header, fail the creation */
+-                      yaffs_DestroyObject(in);
++                      yaffs_DeleteObject(in);
+                       in = NULL;
+               }
+ 
+@@ -2317,38 +2350,38 @@ static yaffs_Object *yaffs_MknodObject(y
+       return in;
+ }
+ 
+-yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name,
+-                            __u32 mode, __u32 uid, __u32 gid)
++yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name,
++                      __u32 mode, __u32 uid, __u32 gid)
+ {
+       return yaffs_MknodObject(YAFFS_OBJECT_TYPE_FILE, parent, name, mode,
+-                               uid, gid, NULL, NULL, 0);
++                              uid, gid, NULL, NULL, 0);
+ }
+ 
+-yaffs_Object *yaffs_MknodDirectory(yaffs_Object * parent, const YCHAR * name,
+-                                 __u32 mode, __u32 uid, __u32 gid)
++yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name,
++                              __u32 mode, __u32 uid, __u32 gid)
+ {
+       return yaffs_MknodObject(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name,
+                                mode, uid, gid, NULL, NULL, 0);
+ }
+ 
+-yaffs_Object *yaffs_MknodSpecial(yaffs_Object * parent, const YCHAR * name,
+-                               __u32 mode, __u32 uid, __u32 gid, __u32 rdev)
++yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name,
++                              __u32 mode, __u32 uid, __u32 gid, __u32 rdev)
+ {
+       return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode,
+                                uid, gid, NULL, NULL, rdev);
+ }
+ 
+-yaffs_Object *yaffs_MknodSymLink(yaffs_Object * parent, const YCHAR * name,
+-                               __u32 mode, __u32 uid, __u32 gid,
+-                               const YCHAR * alias)
++yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name,
++                              __u32 mode, __u32 uid, __u32 gid,
++                              const YCHAR *alias)
+ {
+       return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode,
+-                               uid, gid, NULL, alias, 0);
++                              uid, gid, NULL, alias, 0);
+ }
+ 
+ /* yaffs_Link returns the object id of the equivalent object.*/
+-yaffs_Object *yaffs_Link(yaffs_Object * parent, const YCHAR * name,
+-                       yaffs_Object * equivalentObject)
++yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name,
++                      yaffs_Object *equivalentObject)
+ {
+       /* Get the real object in case we were fed a hard link as an equivalent object */
+       equivalentObject = yaffs_GetEquivalentObject(equivalentObject);
+@@ -2363,33 +2396,31 @@ yaffs_Object *yaffs_Link(yaffs_Object *
+ 
+ }
+ 
+-static int yaffs_ChangeObjectName(yaffs_Object * obj, yaffs_Object * newDir,
+-                                const YCHAR * newName, int force, int shadows)
++static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir,
++                              const YCHAR *newName, int force, int shadows)
+ {
+       int unlinkOp;
+       int deleteOp;
+ 
+       yaffs_Object *existingTarget;
+ 
+-      if (newDir == NULL) {
++      if (newDir == NULL)
+               newDir = obj->parent;   /* use the old directory */
+-      }
+ 
+       if (newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR
+-                 ("tragendy: yaffs_ChangeObjectName: newDir is not a directory"
++                 ("tragedy: yaffs_ChangeObjectName: newDir is not a directory"
+                   TENDSTR)));
+               YBUG();
+       }
+ 
+       /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */
+-      if (obj->myDev->isYaffs2) {
++      if (obj->myDev->isYaffs2)
+               unlinkOp = (newDir == obj->myDev->unlinkedDir);
+-      } else {
++      else
+               unlinkOp = (newDir == obj->myDev->unlinkedDir
+                           && obj->variantType == YAFFS_OBJECT_TYPE_FILE);
+-      }
+ 
+       deleteOp = (newDir == obj->myDev->deletedDir);
+ 
+@@ -2415,40 +2446,40 @@ static int yaffs_ChangeObjectName(yaffs_
+                       obj->unlinked = 1;
+ 
+               /* If it is a deletion then we mark it as a shrink for gc purposes. */
+-              if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows)>= 0)
++              if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows) >= 0)
+                       return YAFFS_OK;
+       }
+ 
+       return YAFFS_FAIL;
+ }
+ 
+-int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName,
+-                     yaffs_Object * newDir, const YCHAR * newName)
++int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName,
++              yaffs_Object *newDir, const YCHAR *newName)
+ {
+-      yaffs_Object *obj;
+-      yaffs_Object *existingTarget;
++      yaffs_Object *obj = NULL;
++      yaffs_Object *existingTarget = NULL;
+       int force = 0;
+ 
++
++      if (!oldDir || oldDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
++              YBUG();
++      if (!newDir || newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
++              YBUG();
++
+ #ifdef CONFIG_YAFFS_CASE_INSENSITIVE
+       /* Special case for case insemsitive systems (eg. WinCE).
+        * While look-up is case insensitive, the name isn't.
+        * Therefore we might want to change x.txt to X.txt
+       */
+-      if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0) {
++      if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0)
+               force = 1;
+-      }
+ #endif
+ 
++      else if (yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH)
++              /* ENAMETOOLONG */
++              return YAFFS_FAIL;
++
+       obj = yaffs_FindObjectByName(oldDir, oldName);
+-      /* Check new name to long. */
+-      if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK &&
+-          yaffs_strlen(newName) > YAFFS_MAX_ALIAS_LENGTH)
+-        /* ENAMETOOLONG */
+-        return YAFFS_FAIL;
+-      else if (obj->variantType != YAFFS_OBJECT_TYPE_SYMLINK &&
+-               yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH)
+-        /* ENAMETOOLONG */
+-        return YAFFS_FAIL;
+ 
+       if (obj && obj->renameAllowed) {
+ 
+@@ -2456,8 +2487,8 @@ int yaffs_RenameObject(yaffs_Object * ol
+ 
+               existingTarget = yaffs_FindObjectByName(newDir, newName);
+               if (existingTarget &&
+-                  existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
+-                  !list_empty(&existingTarget->variant.directoryVariant.children)) {
++                      existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
++                      !ylist_empty(&existingTarget->variant.directoryVariant.children)) {
+                       /* There is a target that is a non-empty directory, so we fail */
+                       return YAFFS_FAIL;      /* EEXIST or ENOTEMPTY */
+               } else if (existingTarget && existingTarget != obj) {
+@@ -2465,7 +2496,7 @@ int yaffs_RenameObject(yaffs_Object * ol
+                        * but only if it isn't the same object
+                        */
+                       yaffs_ChangeObjectName(obj, newDir, newName, force,
+-                                             existingTarget->objectId);
++                                              existingTarget->objectId);
+                       yaffs_UnlinkObject(existingTarget);
+               }
+ 
+@@ -2476,7 +2507,7 @@ int yaffs_RenameObject(yaffs_Object * ol
+ 
+ /*------------------------- Block Management and Page Allocation ----------------*/
+ 
+-static int yaffs_InitialiseBlocks(yaffs_Device * dev)
++static int yaffs_InitialiseBlocks(yaffs_Device *dev)
+ {
+       int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
+ 
+@@ -2487,23 +2518,20 @@ static int yaffs_InitialiseBlocks(yaffs_
+ 
+       /* If the first allocation strategy fails, thry the alternate one */
+       dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo));
+-      if(!dev->blockInfo){
++      if (!dev->blockInfo) {
+               dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo));
+               dev->blockInfoAlt = 1;
+-      }
+-      else
++      } else
+               dev->blockInfoAlt = 0;
+ 
+-      if(dev->blockInfo){
+-
++      if (dev->blockInfo) {
+               /* Set up dynamic blockinfo stuff. */
+               dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */
+               dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks);
+-              if(!dev->chunkBits){
++              if (!dev->chunkBits) {
+                       dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks);
+                       dev->chunkBitsAlt = 1;
+-              }
+-              else
++              } else
+                       dev->chunkBitsAlt = 0;
+       }
+ 
+@@ -2514,30 +2542,29 @@ static int yaffs_InitialiseBlocks(yaffs_
+       }
+ 
+       return YAFFS_FAIL;
+-
+ }
+ 
+-static void yaffs_DeinitialiseBlocks(yaffs_Device * dev)
++static void yaffs_DeinitialiseBlocks(yaffs_Device *dev)
+ {
+-      if(dev->blockInfoAlt && dev->blockInfo)
++      if (dev->blockInfoAlt && dev->blockInfo)
+               YFREE_ALT(dev->blockInfo);
+-      else if(dev->blockInfo)
++      else if (dev->blockInfo)
+               YFREE(dev->blockInfo);
+ 
+       dev->blockInfoAlt = 0;
+ 
+       dev->blockInfo = NULL;
+ 
+-      if(dev->chunkBitsAlt && dev->chunkBits)
++      if (dev->chunkBitsAlt && dev->chunkBits)
+               YFREE_ALT(dev->chunkBits);
+-      else if(dev->chunkBits)
++      else if (dev->chunkBits)
+               YFREE(dev->chunkBits);
+       dev->chunkBitsAlt = 0;
+       dev->chunkBits = NULL;
+ }
+ 
+-static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device * dev,
+-                                          yaffs_BlockInfo * bi)
++static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device *dev,
++                                      yaffs_BlockInfo *bi)
+ {
+       int i;
+       __u32 seq;
+@@ -2556,7 +2583,7 @@ static int yaffs_BlockNotDisqualifiedFro
+               seq = dev->sequenceNumber;
+ 
+               for (i = dev->internalStartBlock; i <= dev->internalEndBlock;
+-                   i++) {
++                              i++) {
+                       b = yaffs_GetBlockInfo(dev, i);
+                       if (b->blockState == YAFFS_BLOCK_STATE_FULL &&
+                           (b->pagesInUse - b->softDeletions) <
+@@ -2571,38 +2598,36 @@ static int yaffs_BlockNotDisqualifiedFro
+        * discarded pages.
+        */
+       return (bi->sequenceNumber <= dev->oldestDirtySequence);
+-
+ }
+ 
+ /* FindDiretiestBlock is used to select the dirtiest block (or close enough)
+  * for garbage collection.
+  */
+ 
+-static int yaffs_FindBlockForGarbageCollection(yaffs_Device * dev,
+-                                             int aggressive)
++static int yaffs_FindBlockForGarbageCollection(yaffs_Device *dev,
++                                      int aggressive)
+ {
+-
+       int b = dev->currentDirtyChecker;
+ 
+       int i;
+       int iterations;
+       int dirtiest = -1;
+       int pagesInUse = 0;
+-      int prioritised=0;
++      int prioritised = 0;
+       yaffs_BlockInfo *bi;
+       int pendingPrioritisedExist = 0;
+ 
+       /* First let's see if we need to grab a prioritised block */
+-      if(dev->hasPendingPrioritisedGCs){
+-              for(i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++){
++      if (dev->hasPendingPrioritisedGCs) {
++              for (i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++) {
+ 
+                       bi = yaffs_GetBlockInfo(dev, i);
+-                      //yaffs_VerifyBlock(dev,bi,i);
++                      /* yaffs_VerifyBlock(dev,bi,i); */
+ 
+-                      if(bi->gcPrioritise) {
++                      if (bi->gcPrioritise) {
+                               pendingPrioritisedExist = 1;
+-                              if(bi->blockState == YAFFS_BLOCK_STATE_FULL &&
+-                                 yaffs_BlockNotDisqualifiedFromGC(dev, bi)){
++                              if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
++                                 yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
+                                       pagesInUse = (bi->pagesInUse - bi->softDeletions);
+                                       dirtiest = i;
+                                       prioritised = 1;
+@@ -2611,7 +2636,7 @@ static int yaffs_FindBlockForGarbageColl
+                       }
+               }
+ 
+-              if(!pendingPrioritisedExist) /* None found, so we can clear this */
++              if (!pendingPrioritisedExist) /* None found, so we can clear this */
+                       dev->hasPendingPrioritisedGCs = 0;
+       }
+ 
+@@ -2623,31 +2648,28 @@ static int yaffs_FindBlockForGarbageColl
+ 
+       dev->nonAggressiveSkip--;
+ 
+-      if (!aggressive && (dev->nonAggressiveSkip > 0)) {
++      if (!aggressive && (dev->nonAggressiveSkip > 0))
+               return -1;
+-      }
+ 
+-      if(!prioritised)
++      if (!prioritised)
+               pagesInUse =
+-                      (aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1;
++                      (aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1;
+ 
+-      if (aggressive) {
++      if (aggressive)
+               iterations =
+                   dev->internalEndBlock - dev->internalStartBlock + 1;
+-      } else {
++      else {
+               iterations =
+                   dev->internalEndBlock - dev->internalStartBlock + 1;
+               iterations = iterations / 16;
+-              if (iterations > 200) {
++              if (iterations > 200)
+                       iterations = 200;
+-              }
+       }
+ 
+       for (i = 0; i <= iterations && pagesInUse > 0 && !prioritised; i++) {
+               b++;
+-              if (b < dev->internalStartBlock || b > dev->internalEndBlock) {
++              if (b < dev->internalStartBlock || b > dev->internalEndBlock)
+                       b = dev->internalStartBlock;
+-              }
+ 
+               if (b < dev->internalStartBlock || b > dev->internalEndBlock) {
+                       T(YAFFS_TRACE_ERROR,
+@@ -2657,17 +2679,9 @@ static int yaffs_FindBlockForGarbageColl
+ 
+               bi = yaffs_GetBlockInfo(dev, b);
+ 
+-#if 0
+-              if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) {
+-                      dirtiest = b;
+-                      pagesInUse = 0;
+-              }
+-              else
+-#endif
+-
+               if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
+-                     (bi->pagesInUse - bi->softDeletions) < pagesInUse &&
+-                      yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
++                      (bi->pagesInUse - bi->softDeletions) < pagesInUse &&
++                              yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
+                       dirtiest = b;
+                       pagesInUse = (bi->pagesInUse - bi->softDeletions);
+               }
+@@ -2678,19 +2692,18 @@ static int yaffs_FindBlockForGarbageColl
+       if (dirtiest > 0) {
+               T(YAFFS_TRACE_GC,
+                 (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), dirtiest,
+-                 dev->nChunksPerBlock - pagesInUse,prioritised));
++                 dev->nChunksPerBlock - pagesInUse, prioritised));
+       }
+ 
+       dev->oldestDirtySequence = 0;
+ 
+-      if (dirtiest > 0) {
++      if (dirtiest > 0)
+               dev->nonAggressiveSkip = 4;
+-      }
+ 
+       return dirtiest;
+ }
+ 
+-static void yaffs_BlockBecameDirty(yaffs_Device * dev, int blockNo)
++static void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo)
+ {
+       yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo);
+ 
+@@ -2752,7 +2765,7 @@ static void yaffs_BlockBecameDirty(yaffs
+       }
+ }
+ 
+-static int yaffs_FindBlockForAllocation(yaffs_Device * dev)
++static int yaffs_FindBlockForAllocation(yaffs_Device *dev)
+ {
+       int i;
+ 
+@@ -2763,7 +2776,7 @@ static int yaffs_FindBlockForAllocation(
+                * Can't get space to gc
+                */
+               T(YAFFS_TRACE_ERROR,
+-                (TSTR("yaffs tragedy: no more eraased blocks" TENDSTR)));
++                (TSTR("yaffs tragedy: no more erased blocks" TENDSTR)));
+ 
+               return -1;
+       }
+@@ -2794,31 +2807,74 @@ static int yaffs_FindBlockForAllocation(
+ 
+       T(YAFFS_TRACE_ALWAYS,
+         (TSTR
+-         ("yaffs tragedy: no more eraased blocks, but there should have been %d"
++         ("yaffs tragedy: no more erased blocks, but there should have been %d"
+           TENDSTR), dev->nErasedBlocks));
+ 
+       return -1;
+ }
+ 
+ 
+-// Check if there's space to allocate...
+-// Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()?
+-static int yaffs_CheckSpaceForAllocation(yaffs_Device * dev)
++
++static int yaffs_CalcCheckpointBlocksRequired(yaffs_Device *dev)
++{
++      if (!dev->nCheckpointBlocksRequired &&
++         dev->isYaffs2) {
++              /* Not a valid value so recalculate */
++              int nBytes = 0;
++              int nBlocks;
++              int devBlocks = (dev->endBlock - dev->startBlock + 1);
++              int tnodeSize;
++
++              tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
++
++              if (tnodeSize < sizeof(yaffs_Tnode))
++                      tnodeSize = sizeof(yaffs_Tnode);
++
++              nBytes += sizeof(yaffs_CheckpointValidity);
++              nBytes += sizeof(yaffs_CheckpointDevice);
++              nBytes += devBlocks * sizeof(yaffs_BlockInfo);
++              nBytes += devBlocks * dev->chunkBitmapStride;
++              nBytes += (sizeof(yaffs_CheckpointObject) + sizeof(__u32)) * (dev->nObjectsCreated - dev->nFreeObjects);
++              nBytes += (tnodeSize + sizeof(__u32)) * (dev->nTnodesCreated - dev->nFreeTnodes);
++              nBytes += sizeof(yaffs_CheckpointValidity);
++              nBytes += sizeof(__u32); /* checksum*/
++
++              /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */
++
++              nBlocks = (nBytes/(dev->nDataBytesPerChunk * dev->nChunksPerBlock)) + 3;
++
++              dev->nCheckpointBlocksRequired = nBlocks;
++      }
++
++      return dev->nCheckpointBlocksRequired;
++}
++
++/*
++ * Check if there's space to allocate...
++ * Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()?
++ */
++static int yaffs_CheckSpaceForAllocation(yaffs_Device *dev)
+ {
+       int reservedChunks;
+       int reservedBlocks = dev->nReservedBlocks;
+       int checkpointBlocks;
+ 
+-      checkpointBlocks =  dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint;
+-      if(checkpointBlocks < 0)
++      if (dev->isYaffs2) {
++              checkpointBlocks =  yaffs_CalcCheckpointBlocksRequired(dev) -
++                                  dev->blocksInCheckpoint;
++              if (checkpointBlocks < 0)
++                      checkpointBlocks = 0;
++      } else {
+               checkpointBlocks = 0;
++      }
+ 
+       reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock);
+ 
+       return (dev->nFreeChunks > reservedChunks);
+ }
+ 
+-static int yaffs_AllocateChunk(yaffs_Device * dev, int useReserve, yaffs_BlockInfo **blockUsedPtr)
++static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve,
++              yaffs_BlockInfo **blockUsedPtr)
+ {
+       int retVal;
+       yaffs_BlockInfo *bi;
+@@ -2835,7 +2891,7 @@ static int yaffs_AllocateChunk(yaffs_Dev
+       }
+ 
+       if (dev->nErasedBlocks < dev->nReservedBlocks
+-          && dev->allocationPage == 0) {
++                      && dev->allocationPage == 0) {
+               T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR)));
+       }
+ 
+@@ -2844,10 +2900,10 @@ static int yaffs_AllocateChunk(yaffs_Dev
+               bi = yaffs_GetBlockInfo(dev, dev->allocationBlock);
+ 
+               retVal = (dev->allocationBlock * dev->nChunksPerBlock) +
+-                  dev->allocationPage;
++                      dev->allocationPage;
+               bi->pagesInUse++;
+               yaffs_SetChunkBit(dev, dev->allocationBlock,
+-                                dev->allocationPage);
++                              dev->allocationPage);
+ 
+               dev->allocationPage++;
+ 
+@@ -2859,43 +2915,43 @@ static int yaffs_AllocateChunk(yaffs_Dev
+                       dev->allocationBlock = -1;
+               }
+ 
+-              if(blockUsedPtr)
++              if (blockUsedPtr)
+                       *blockUsedPtr = bi;
+ 
+               return retVal;
+       }
+ 
+       T(YAFFS_TRACE_ERROR,
+-        (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR)));
++                      (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR)));
+ 
+       return -1;
+ }
+ 
+-static int yaffs_GetErasedChunks(yaffs_Device * dev)
++static int yaffs_GetErasedChunks(yaffs_Device *dev)
+ {
+       int n;
+ 
+       n = dev->nErasedBlocks * dev->nChunksPerBlock;
+ 
+-      if (dev->allocationBlock > 0) {
++      if (dev->allocationBlock > 0)
+               n += (dev->nChunksPerBlock - dev->allocationPage);
+-      }
+ 
+       return n;
+ 
+ }
+ 
+-static int yaffs_GarbageCollectBlock(yaffs_Device * dev, int block)
++static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block,
++              int wholeBlock)
+ {
+       int oldChunk;
+       int newChunk;
+-      int chunkInBlock;
+       int markNAND;
+       int retVal = YAFFS_OK;
+       int cleanups = 0;
+       int i;
+       int isCheckpointBlock;
+       int matchingChunk;
++      int maxCopies;
+ 
+       int chunksBefore = yaffs_GetErasedChunks(dev);
+       int chunksAfter;
+@@ -2911,8 +2967,11 @@ static int yaffs_GarbageCollectBlock(yaf
+       bi->blockState = YAFFS_BLOCK_STATE_COLLECTING;
+ 
+       T(YAFFS_TRACE_TRACING,
+-        (TSTR("Collecting block %d, in use %d, shrink %d, " TENDSTR), block,
+-         bi->pagesInUse, bi->hasShrinkHeader));
++                      (TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR),
++                       block,
++                       bi->pagesInUse,
++                       bi->hasShrinkHeader,
++                       wholeBlock));
+ 
+       /*yaffs_VerifyFreeChunks(dev); */
+ 
+@@ -2926,26 +2985,33 @@ static int yaffs_GarbageCollectBlock(yaf
+       dev->isDoingGC = 1;
+ 
+       if (isCheckpointBlock ||
+-          !yaffs_StillSomeChunkBits(dev, block)) {
++                      !yaffs_StillSomeChunkBits(dev, block)) {
+               T(YAFFS_TRACE_TRACING,
+-                (TSTR
+-                 ("Collecting block %d that has no chunks in use" TENDSTR),
+-                 block));
++                              (TSTR
++                               ("Collecting block %d that has no chunks in use" TENDSTR),
++                               block));
+               yaffs_BlockBecameDirty(dev, block);
+       } else {
+ 
+               __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
+ 
+-              yaffs_VerifyBlock(dev,bi,block);
++              yaffs_VerifyBlock(dev, bi, block);
+ 
+-              for (chunkInBlock = 0, oldChunk = block * dev->nChunksPerBlock;
+-                   chunkInBlock < dev->nChunksPerBlock
+-                   && yaffs_StillSomeChunkBits(dev, block);
+-                   chunkInBlock++, oldChunk++) {
+-                      if (yaffs_CheckChunkBit(dev, block, chunkInBlock)) {
++              maxCopies = (wholeBlock) ? dev->nChunksPerBlock : 10;
++              oldChunk = block * dev->nChunksPerBlock + dev->gcChunk;
++
++              for (/* init already done */;
++                   retVal == YAFFS_OK &&
++                   dev->gcChunk < dev->nChunksPerBlock &&
++                   (bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) &&
++                   maxCopies > 0;
++                   dev->gcChunk++, oldChunk++) {
++                      if (yaffs_CheckChunkBit(dev, block, dev->gcChunk)) {
+ 
+                               /* This page is in use and might need to be copied off */
+ 
++                              maxCopies--;
++
+                               markNAND = 1;
+ 
+                               yaffs_InitialiseTags(&tags);
+@@ -2959,22 +3025,22 @@ static int yaffs_GarbageCollectBlock(yaf
+ 
+                               T(YAFFS_TRACE_GC_DETAIL,
+                                 (TSTR
+-                                 ("Collecting page %d, %d %d %d " TENDSTR),
+-                                 chunkInBlock, tags.objectId, tags.chunkId,
++                                 ("Collecting chunk in block %d, %d %d %d " TENDSTR),
++                                 dev->gcChunk, tags.objectId, tags.chunkId,
+                                  tags.byteCount));
+ 
+-                              if(object && !yaffs_SkipVerification(dev)){
+-                                      if(tags.chunkId == 0)
+-                                              matchingChunk = object->chunkId;
+-                                      else if(object->softDeleted)
++                              if (object && !yaffs_SkipVerification(dev)) {
++                                      if (tags.chunkId == 0)
++                                              matchingChunk = object->hdrChunk;
++                                      else if (object->softDeleted)
+                                               matchingChunk = oldChunk; /* Defeat the test */
+                                       else
+-                                              matchingChunk = yaffs_FindChunkInFile(object,tags.chunkId,NULL);
++                                              matchingChunk = yaffs_FindChunkInFile(object, tags.chunkId, NULL);
+ 
+-                                      if(oldChunk != matchingChunk)
++                                      if (oldChunk != matchingChunk)
+                                               T(YAFFS_TRACE_ERROR,
+                                                 (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR),
+-                                                oldChunk,matchingChunk,tags.objectId, tags.chunkId));
++                                                oldChunk, matchingChunk, tags.objectId, tags.chunkId));
+ 
+                               }
+ 
+@@ -2986,9 +3052,11 @@ static int yaffs_GarbageCollectBlock(yaf
+                                           tags.objectId, tags.chunkId, tags.byteCount));
+                               }
+ 
+-                              if (object && object->deleted
+-                                  && tags.chunkId != 0) {
+-                                      /* Data chunk in a deleted file, throw it away
++                              if (object &&
++                                  object->deleted &&
++                                  object->softDeleted &&
++                                  tags.chunkId != 0) {
++                                      /* Data chunk in a soft deleted file, throw it away
+                                        * It's a soft deleted data chunk,
+                                        * No need to copy this, just forget about it and
+                                        * fix up the object.
+@@ -3003,13 +3071,12 @@ static int yaffs_GarbageCollectBlock(yaf
+                                               cleanups++;
+                                       }
+                                       markNAND = 0;
+-                              } else if (0
+-                                         /* Todo object && object->deleted && object->nDataChunks == 0 */
+-                                         ) {
++                              } else if (0) {
++                                      /* Todo object && object->deleted && object->nDataChunks == 0 */
+                                       /* Deleted object header with no data chunks.
+                                        * Can be discarded and the file deleted.
+                                        */
+-                                      object->chunkId = 0;
++                                      object->hdrChunk = 0;
+                                       yaffs_FreeTnode(object->myDev,
+                                                       object->variant.
+                                                       fileVariant.top);
+@@ -3031,17 +3098,14 @@ static int yaffs_GarbageCollectBlock(yaf
+                                                * We need to nuke the shrinkheader flags first
+                                                * We no longer want the shrinkHeader flag since its work is done
+                                                * and if it is left in place it will mess up scanning.
+-                                               * Also, clear out any shadowing stuff
+                                                */
+ 
+                                               yaffs_ObjectHeader *oh;
+                                               oh = (yaffs_ObjectHeader *)buffer;
+                                               oh->isShrink = 0;
+-                                              oh->shadowsObject = -1;
+-                                              tags.extraShadows = 0;
+                                               tags.extraIsShrinkHeader = 0;
+ 
+-                                              yaffs_VerifyObjectHeader(object,oh,&tags,1);
++                                              yaffs_VerifyObjectHeader(object, oh, &tags, 1);
+                                       }
+ 
+                                       newChunk =
+@@ -3055,7 +3119,7 @@ static int yaffs_GarbageCollectBlock(yaf
+ 
+                                               if (tags.chunkId == 0) {
+                                                       /* It's a header */
+-                                                      object->chunkId =  newChunk;
++                                                      object->hdrChunk =  newChunk;
+                                                       object->serial =   tags.serialNumber;
+                                               } else {
+                                                       /* It's a data chunk */
+@@ -3067,7 +3131,8 @@ static int yaffs_GarbageCollectBlock(yaf
+                                       }
+                               }
+ 
+-                              yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__);
++                              if (retVal == YAFFS_OK)
++                                      yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__);
+ 
+                       }
+               }
+@@ -3098,18 +3163,25 @@ static int yaffs_GarbageCollectBlock(yaf
+ 
+       }
+ 
+-      yaffs_VerifyCollectedBlock(dev,bi,block);
++      yaffs_VerifyCollectedBlock(dev, bi, block);
+ 
+-      if (chunksBefore >= (chunksAfter = yaffs_GetErasedChunks(dev))) {
++      chunksAfter = yaffs_GetErasedChunks(dev);
++      if (chunksBefore >= chunksAfter) {
+               T(YAFFS_TRACE_GC,
+                 (TSTR
+                  ("gc did not increase free chunks before %d after %d"
+                   TENDSTR), chunksBefore, chunksAfter));
+       }
+ 
++      /* If the gc completed then clear the current gcBlock so that we find another. */
++      if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING) {
++              dev->gcBlock = -1;
++              dev->gcChunk = 0;
++      }
++
+       dev->isDoingGC = 0;
+ 
+-      return YAFFS_OK;
++      return retVal;
+ }
+ 
+ /* New garbage collector
+@@ -3121,7 +3193,7 @@ static int yaffs_GarbageCollectBlock(yaf
+  * The idea is to help clear out space in a more spread-out manner.
+  * Dunno if it really does anything useful.
+  */
+-static int yaffs_CheckGarbageCollection(yaffs_Device * dev)
++static int yaffs_CheckGarbageCollection(yaffs_Device *dev)
+ {
+       int block;
+       int aggressive;
+@@ -3142,8 +3214,8 @@ static int yaffs_CheckGarbageCollection(
+       do {
+               maxTries++;
+ 
+-              checkpointBlockAdjust = (dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint);
+-              if(checkpointBlockAdjust < 0)
++              checkpointBlockAdjust = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
++              if (checkpointBlockAdjust < 0)
+                       checkpointBlockAdjust = 0;
+ 
+               if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust + 2)) {
+@@ -3154,20 +3226,24 @@ static int yaffs_CheckGarbageCollection(
+                       aggressive = 0;
+               }
+ 
+-              block = yaffs_FindBlockForGarbageCollection(dev, aggressive);
++              if (dev->gcBlock <= 0) {
++                      dev->gcBlock = yaffs_FindBlockForGarbageCollection(dev, aggressive);
++                      dev->gcChunk = 0;
++              }
++
++              block = dev->gcBlock;
+ 
+               if (block > 0) {
+                       dev->garbageCollections++;
+-                      if (!aggressive) {
++                      if (!aggressive)
+                               dev->passiveGarbageCollections++;
+-                      }
+ 
+                       T(YAFFS_TRACE_GC,
+                         (TSTR
+                          ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR),
+                          dev->nErasedBlocks, aggressive));
+ 
+-                      gcOk = yaffs_GarbageCollectBlock(dev, block);
++                      gcOk = yaffs_GarbageCollectBlock(dev, block, aggressive);
+               }
+ 
+               if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) {
+@@ -3176,15 +3252,16 @@ static int yaffs_CheckGarbageCollection(
+                          ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d"
+                           TENDSTR), dev->nErasedBlocks, maxTries, block));
+               }
+-      } while ((dev->nErasedBlocks < dev->nReservedBlocks) && (block > 0)
+-               && (maxTries < 2));
++      } while ((dev->nErasedBlocks < dev->nReservedBlocks) &&
++               (block > 0) &&
++               (maxTries < 2));
+ 
+       return aggressive ? gcOk : YAFFS_OK;
+ }
+ 
+ /*-------------------------  TAGS --------------------------------*/
+ 
+-static int yaffs_TagsMatch(const yaffs_ExtendedTags * tags, int objectId,
++static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId,
+                          int chunkInObject)
+ {
+       return (tags->chunkId == chunkInObject &&
+@@ -3195,8 +3272,8 @@ static int yaffs_TagsMatch(const yaffs_E
+ 
+ /*-------------------- Data file manipulation -----------------*/
+ 
+-static int yaffs_FindChunkInFile(yaffs_Object * in, int chunkInInode,
+-                               yaffs_ExtendedTags * tags)
++static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode,
++                               yaffs_ExtendedTags *tags)
+ {
+       /*Get the Tnode, then get the level 0 offset chunk offset */
+       yaffs_Tnode *tn;
+@@ -3214,7 +3291,7 @@ static int yaffs_FindChunkInFile(yaffs_O
+       tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode);
+ 
+       if (tn) {
+-              theChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode);
++              theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
+ 
+               retVal =
+                   yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId,
+@@ -3223,8 +3300,8 @@ static int yaffs_FindChunkInFile(yaffs_O
+       return retVal;
+ }
+ 
+-static int yaffs_FindAndDeleteChunkInFile(yaffs_Object * in, int chunkInInode,
+-                                        yaffs_ExtendedTags * tags)
++static int yaffs_FindAndDeleteChunkInFile(yaffs_Object *in, int chunkInInode,
++                                        yaffs_ExtendedTags *tags)
+ {
+       /* Get the Tnode, then get the level 0 offset chunk offset */
+       yaffs_Tnode *tn;
+@@ -3243,29 +3320,23 @@ static int yaffs_FindAndDeleteChunkInFil
+ 
+       if (tn) {
+ 
+-              theChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode);
++              theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
+ 
+               retVal =
+                   yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId,
+                                          chunkInInode);
+ 
+               /* Delete the entry in the filestructure (if found) */
+-              if (retVal != -1) {
+-                      yaffs_PutLevel0Tnode(dev,tn,chunkInInode,0);
+-              }
+-      } else {
+-              /*T(("No level 0 found for %d\n", chunkInInode)); */
++              if (retVal != -1)
++                      yaffs_PutLevel0Tnode(dev, tn, chunkInInode, 0);
+       }
+ 
+-      if (retVal == -1) {
+-              /* T(("Could not find %d to delete\n",chunkInInode)); */
+-      }
+       return retVal;
+ }
+ 
+ #ifdef YAFFS_PARANOID
+ 
+-static int yaffs_CheckFileSanity(yaffs_Object * in)
++static int yaffs_CheckFileSanity(yaffs_Object *in)
+ {
+       int chunk;
+       int nChunks;
+@@ -3278,10 +3349,8 @@ static int yaffs_CheckFileSanity(yaffs_O
+       int theChunk;
+       int chunkDeleted;
+ 
+-      if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
+-              /* T(("Object not a file\n")); */
++      if (in->variantType != YAFFS_OBJECT_TYPE_FILE)
+               return YAFFS_FAIL;
+-      }
+ 
+       objId = in->objectId;
+       fSize = in->variant.fileVariant.fileSize;
+@@ -3294,7 +3363,7 @@ static int yaffs_CheckFileSanity(yaffs_O
+ 
+               if (tn) {
+ 
+-                      theChunk = yaffs_GetChunkGroupBase(dev,tn,chunk);
++                      theChunk = yaffs_GetChunkGroupBase(dev, tn, chunk);
+ 
+                       if (yaffs_CheckChunkBits
+                           (dev, theChunk / dev->nChunksPerBlock,
+@@ -3323,7 +3392,7 @@ static int yaffs_CheckFileSanity(yaffs_O
+ 
+ #endif
+ 
+-static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode,
++static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
+                                 int chunkInNAND, int inScan)
+ {
+       /* NB inScan is zero unless scanning.
+@@ -3358,11 +3427,10 @@ static int yaffs_PutChunkIntoFile(yaffs_
+                                       &in->variant.fileVariant,
+                                       chunkInInode,
+                                       NULL);
+-      if (!tn) {
++      if (!tn)
+               return YAFFS_FAIL;
+-      }
+ 
+-      existingChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode);
++      existingChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
+ 
+       if (inScan != 0) {
+               /* If we're scanning then we need to test for duplicates
+@@ -3374,7 +3442,7 @@ static int yaffs_PutChunkIntoFile(yaffs_
+                * Update: For backward scanning we don't need to re-read tags so this is quite cheap.
+                */
+ 
+-              if (existingChunk != 0) {
++              if (existingChunk > 0) {
+                       /* NB Right now existing chunk will not be real chunkId if the device >= 32MB
+                        *    thus we have to do a FindChunkInFile to get the real chunk id.
+                        *
+@@ -3411,8 +3479,10 @@ static int yaffs_PutChunkIntoFile(yaffs_
+                        * not be loaded during a scan
+                        */
+ 
+-                      newSerial = newTags.serialNumber;
+-                      existingSerial = existingTags.serialNumber;
++                      if (inScan > 0) {
++                              newSerial = newTags.serialNumber;
++                              existingSerial = existingTags.serialNumber;
++                      }
+ 
+                       if ((inScan > 0) &&
+                           (in->myDev->isYaffs2 ||
+@@ -3437,24 +3507,23 @@ static int yaffs_PutChunkIntoFile(yaffs_
+ 
+       }
+ 
+-      if (existingChunk == 0) {
++      if (existingChunk == 0)
+               in->nDataChunks++;
+-      }
+ 
+-      yaffs_PutLevel0Tnode(dev,tn,chunkInInode,chunkInNAND);
++      yaffs_PutLevel0Tnode(dev, tn, chunkInInode, chunkInNAND);
+ 
+       return YAFFS_OK;
+ }
+ 
+-static int yaffs_ReadChunkDataFromObject(yaffs_Object * in, int chunkInInode,
+-                                       __u8 * buffer)
++static int yaffs_ReadChunkDataFromObject(yaffs_Object *in, int chunkInInode,
++                                      __u8 *buffer)
+ {
+       int chunkInNAND = yaffs_FindChunkInFile(in, chunkInInode, NULL);
+ 
+-      if (chunkInNAND >= 0) {
++      if (chunkInNAND >= 0)
+               return yaffs_ReadChunkWithTagsFromNAND(in->myDev, chunkInNAND,
+-                                                     buffer,NULL);
+-      } else {
++                                              buffer, NULL);
++      else {
+               T(YAFFS_TRACE_NANDACCESS,
+                 (TSTR("Chunk %d not found zero instead" TENDSTR),
+                  chunkInNAND));
+@@ -3465,7 +3534,7 @@ static int yaffs_ReadChunkDataFromObject
+ 
+ }
+ 
+-void yaffs_DeleteChunk(yaffs_Device * dev, int chunkId, int markNAND, int lyn)
++void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn)
+ {
+       int block;
+       int page;
+@@ -3475,16 +3544,15 @@ void yaffs_DeleteChunk(yaffs_Device * de
+       if (chunkId <= 0)
+               return;
+ 
+-
+       dev->nDeletions++;
+       block = chunkId / dev->nChunksPerBlock;
+       page = chunkId % dev->nChunksPerBlock;
+ 
+ 
+-      if(!yaffs_CheckChunkBit(dev,block,page))
++      if (!yaffs_CheckChunkBit(dev, block, page))
+               T(YAFFS_TRACE_VERIFY,
+-                      (TSTR("Deleting invalid chunk %d"TENDSTR),
+-                       chunkId));
++                      (TSTR("Deleting invalid chunk %d"TENDSTR),
++                       chunkId));
+ 
+       bi = yaffs_GetBlockInfo(dev, block);
+ 
+@@ -3524,14 +3592,12 @@ void yaffs_DeleteChunk(yaffs_Device * de
+                       yaffs_BlockBecameDirty(dev, block);
+               }
+ 
+-      } else {
+-              /* T(("Bad news deleting chunk %d\n",chunkId)); */
+       }
+ 
+ }
+ 
+-static int yaffs_WriteChunkDataToObject(yaffs_Object * in, int chunkInInode,
+-                                      const __u8 * buffer, int nBytes,
++static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode,
++                                      const __u8 *buffer, int nBytes,
+                                       int useReserve)
+ {
+       /* Find old chunk Need to do this to get serial number
+@@ -3561,6 +3627,12 @@ static int yaffs_WriteChunkDataToObject(
+           (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1;
+       newTags.byteCount = nBytes;
+ 
++      if (nBytes < 1 || nBytes > dev->totalBytesPerChunk) {
++              T(YAFFS_TRACE_ERROR,
++              (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), nBytes));
++              YBUG();
++      }
++
+       newChunkId =
+           yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags,
+                                             useReserve);
+@@ -3568,11 +3640,9 @@ static int yaffs_WriteChunkDataToObject(
+       if (newChunkId >= 0) {
+               yaffs_PutChunkIntoFile(in, chunkInInode, newChunkId, 0);
+ 
+-              if (prevChunkId >= 0) {
++              if (prevChunkId >= 0)
+                       yaffs_DeleteChunk(dev, prevChunkId, 1, __LINE__);
+ 
+-              }
+-
+               yaffs_CheckFileSanity(in);
+       }
+       return newChunkId;
+@@ -3582,7 +3652,7 @@ static int yaffs_WriteChunkDataToObject(
+ /* UpdateObjectHeader updates the header on NAND for an object.
+  * If name is not NULL, then that new name is used.
+  */
+-int yaffs_UpdateObjectHeader(yaffs_Object * in, const YCHAR * name, int force,
++int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force,
+                            int isShrink, int shadows)
+ {
+ 
+@@ -3603,9 +3673,12 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
+ 
+       yaffs_ObjectHeader *oh = NULL;
+ 
+-      yaffs_strcpy(oldName,"silly old name");
++      yaffs_strcpy(oldName, _Y("silly old name"));
+ 
+-      if (!in->fake || force) {
++
++      if (!in->fake ||
++              in == dev->rootDir || /* The rootDir should also be saved */
++              force) {
+ 
+               yaffs_CheckGarbageCollection(dev);
+               yaffs_CheckObjectDetailsLoaded(in);
+@@ -3613,13 +3686,13 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
+               buffer = yaffs_GetTempBuffer(in->myDev, __LINE__);
+               oh = (yaffs_ObjectHeader *) buffer;
+ 
+-              prevChunkId = in->chunkId;
++              prevChunkId = in->hdrChunk;
+ 
+-              if (prevChunkId >= 0) {
++              if (prevChunkId > 0) {
+                       result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId,
+                                                       buffer, &oldTags);
+ 
+-                      yaffs_VerifyObjectHeader(in,oh,&oldTags,0);
++                      yaffs_VerifyObjectHeader(in, oh, &oldTags, 0);
+ 
+                       memcpy(oldName, oh->name, sizeof(oh->name));
+               }
+@@ -3628,7 +3701,7 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
+ 
+               oh->type = in->variantType;
+               oh->yst_mode = in->yst_mode;
+-              oh->shadowsObject = shadows;
++              oh->shadowsObject = oh->inbandShadowsObject = shadows;
+ 
+ #ifdef CONFIG_YAFFS_WINCE
+               oh->win_atime[0] = in->win_atime[0];
+@@ -3645,20 +3718,18 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
+               oh->yst_ctime = in->yst_ctime;
+               oh->yst_rdev = in->yst_rdev;
+ #endif
+-              if (in->parent) {
++              if (in->parent)
+                       oh->parentObjectId = in->parent->objectId;
+-              } else {
++              else
+                       oh->parentObjectId = 0;
+-              }
+ 
+               if (name && *name) {
+                       memset(oh->name, 0, sizeof(oh->name));
+                       yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH);
+-              } else if (prevChunkId>=0) {
++              } else if (prevChunkId >= 0)
+                       memcpy(oh->name, oldName, sizeof(oh->name));
+-              } else {
++              else
+                       memset(oh->name, 0, sizeof(oh->name));
+-              }
+ 
+               oh->isShrink = isShrink;
+ 
+@@ -3708,7 +3779,7 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
+               newTags.extraShadows = (oh->shadowsObject > 0) ? 1 : 0;
+               newTags.extraObjectType = in->variantType;
+ 
+-              yaffs_VerifyObjectHeader(in,oh,&newTags,1);
++              yaffs_VerifyObjectHeader(in, oh, &newTags, 1);
+ 
+               /* Create new chunk in NAND */
+               newChunkId =
+@@ -3717,20 +3788,20 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
+ 
+               if (newChunkId >= 0) {
+ 
+-                      in->chunkId = newChunkId;
++                      in->hdrChunk = newChunkId;
+ 
+                       if (prevChunkId >= 0) {
+                               yaffs_DeleteChunk(dev, prevChunkId, 1,
+                                                 __LINE__);
+                       }
+ 
+-                      if(!yaffs_ObjectHasCachedWriteData(in))
++                      if (!yaffs_ObjectHasCachedWriteData(in))
+                               in->dirty = 0;
+ 
+                       /* If this was a shrink, then mark the block that the chunk lives on */
+                       if (isShrink) {
+                               bi = yaffs_GetBlockInfo(in->myDev,
+-                                                      newChunkId /in->myDev-> nChunksPerBlock);
++                                      newChunkId / in->myDev->nChunksPerBlock);
+                               bi->hasShrinkHeader = 1;
+                       }
+ 
+@@ -3766,7 +3837,7 @@ static int yaffs_ObjectHasCachedWriteDat
+       yaffs_ChunkCache *cache;
+       int nCaches = obj->myDev->nShortOpCaches;
+ 
+-      for(i = 0; i < nCaches; i++){
++      for (i = 0; i < nCaches; i++) {
+               cache = &dev->srCache[i];
+               if (cache->object == obj &&
+                   cache->dirty)
+@@ -3777,7 +3848,7 @@ static int yaffs_ObjectHasCachedWriteDat
+ }
+ 
+ 
+-static void yaffs_FlushFilesChunkCache(yaffs_Object * obj)
++static void yaffs_FlushFilesChunkCache(yaffs_Object *obj)
+ {
+       yaffs_Device *dev = obj->myDev;
+       int lowest = -99;       /* Stop compiler whining. */
+@@ -3844,16 +3915,16 @@ void yaffs_FlushEntireDeviceCache(yaffs_
+        */
+       do {
+               obj = NULL;
+-              for( i = 0; i < nCaches && !obj; i++) {
++              for (i = 0; i < nCaches && !obj; i++) {
+                       if (dev->srCache[i].object &&
+                           dev->srCache[i].dirty)
+                               obj = dev->srCache[i].object;
+ 
+               }
+-              if(obj)
++              if (obj)
+                       yaffs_FlushFilesChunkCache(obj);
+ 
+-      } while(obj);
++      } while (obj);
+ 
+ }
+ 
+@@ -3863,41 +3934,21 @@ void yaffs_FlushEntireDeviceCache(yaffs_
+  * Then look for the least recently used non-dirty one.
+  * Then look for the least recently used dirty one...., flush and look again.
+  */
+-static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device * dev)
++static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device *dev)
+ {
+       int i;
+-      int usage;
+-      int theOne;
+ 
+       if (dev->nShortOpCaches > 0) {
+               for (i = 0; i < dev->nShortOpCaches; i++) {
+                       if (!dev->srCache[i].object)
+                               return &dev->srCache[i];
+               }
++      }
+ 
+-              return NULL;
++      return NULL;
++}
+ 
+-              theOne = -1;
+-              usage = 0;      /* just to stop the compiler grizzling */
+-
+-              for (i = 0; i < dev->nShortOpCaches; i++) {
+-                      if (!dev->srCache[i].dirty &&
+-                          ((dev->srCache[i].lastUse < usage && theOne >= 0) ||
+-                           theOne < 0)) {
+-                              usage = dev->srCache[i].lastUse;
+-                              theOne = i;
+-                      }
+-              }
+-
+-
+-              return theOne >= 0 ? &dev->srCache[theOne] : NULL;
+-      } else {
+-              return NULL;
+-      }
+-
+-}
+-
+-static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device * dev)
++static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev)
+ {
+       yaffs_ChunkCache *cache;
+       yaffs_Object *theObj;
+@@ -3927,8 +3978,7 @@ static yaffs_ChunkCache *yaffs_GrabChunk
+                       for (i = 0; i < dev->nShortOpCaches; i++) {
+                               if (dev->srCache[i].object &&
+                                   !dev->srCache[i].locked &&
+-                                  (dev->srCache[i].lastUse < usage || !cache))
+-                              {
++                                  (dev->srCache[i].lastUse < usage || !cache)) {
+                                       usage = dev->srCache[i].lastUse;
+                                       theObj = dev->srCache[i].object;
+                                       cache = &dev->srCache[i];
+@@ -3950,7 +4000,7 @@ static yaffs_ChunkCache *yaffs_GrabChunk
+ }
+ 
+ /* Find a cached chunk */
+-static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object * obj,
++static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj,
+                                             int chunkId)
+ {
+       yaffs_Device *dev = obj->myDev;
+@@ -3969,7 +4019,7 @@ static yaffs_ChunkCache *yaffs_FindChunk
+ }
+ 
+ /* Mark the chunk for the least recently used algorithym */
+-static void yaffs_UseChunkCache(yaffs_Device * dev, yaffs_ChunkCache * cache,
++static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache,
+                               int isAWrite)
+ {
+ 
+@@ -3977,9 +4027,9 @@ static void yaffs_UseChunkCache(yaffs_De
+               if (dev->srLastUse < 0 || dev->srLastUse > 100000000) {
+                       /* Reset the cache usages */
+                       int i;
+-                      for (i = 1; i < dev->nShortOpCaches; i++) {
++                      for (i = 1; i < dev->nShortOpCaches; i++)
+                               dev->srCache[i].lastUse = 0;
+-                      }
++
+                       dev->srLastUse = 0;
+               }
+ 
+@@ -3987,9 +4037,8 @@ static void yaffs_UseChunkCache(yaffs_De
+ 
+               cache->lastUse = dev->srLastUse;
+ 
+-              if (isAWrite) {
++              if (isAWrite)
+                       cache->dirty = 1;
+-              }
+       }
+ }
+ 
+@@ -3997,21 +4046,20 @@ static void yaffs_UseChunkCache(yaffs_De
+  * Do this when a whole page gets written,
+  * ie the short cache for this page is no longer valid.
+  */
+-static void yaffs_InvalidateChunkCache(yaffs_Object * object, int chunkId)
++static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId)
+ {
+       if (object->myDev->nShortOpCaches > 0) {
+               yaffs_ChunkCache *cache = yaffs_FindChunkCache(object, chunkId);
+ 
+-              if (cache) {
++              if (cache)
+                       cache->object = NULL;
+-              }
+       }
+ }
+ 
+ /* Invalidate all the cache pages associated with this object
+  * Do this whenever ther file is deleted or resized.
+  */
+-static void yaffs_InvalidateWholeChunkCache(yaffs_Object * in)
++static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in)
+ {
+       int i;
+       yaffs_Device *dev = in->myDev;
+@@ -4019,9 +4067,8 @@ static void yaffs_InvalidateWholeChunkCa
+       if (dev->nShortOpCaches > 0) {
+               /* Invalidate it. */
+               for (i = 0; i < dev->nShortOpCaches; i++) {
+-                      if (dev->srCache[i].object == in) {
++                      if (dev->srCache[i].object == in)
+                               dev->srCache[i].object = NULL;
+-                      }
+               }
+       }
+ }
+@@ -4029,18 +4076,18 @@ static void yaffs_InvalidateWholeChunkCa
+ /*--------------------- Checkpointing --------------------*/
+ 
+ 
+-static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev,int head)
++static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev, int head)
+ {
+       yaffs_CheckpointValidity cp;
+ 
+-      memset(&cp,0,sizeof(cp));
++      memset(&cp, 0, sizeof(cp));
+ 
+       cp.structType = sizeof(cp);
+       cp.magic = YAFFS_MAGIC;
+       cp.version = YAFFS_CHECKPOINT_VERSION;
+       cp.head = (head) ? 1 : 0;
+ 
+-      return (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp))?
++      return (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)) ?
+               1 : 0;
+ }
+ 
+@@ -4049,9 +4096,9 @@ static int yaffs_ReadCheckpointValidityM
+       yaffs_CheckpointValidity cp;
+       int ok;
+ 
+-      ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
++      ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
+ 
+-      if(ok)
++      if (ok)
+               ok = (cp.structType == sizeof(cp)) &&
+                    (cp.magic == YAFFS_MAGIC) &&
+                    (cp.version == YAFFS_CHECKPOINT_VERSION) &&
+@@ -4100,21 +4147,21 @@ static int yaffs_WriteCheckpointDevice(y
+       int ok;
+ 
+       /* Write device runtime values*/
+-      yaffs_DeviceToCheckpointDevice(&cp,dev);
++      yaffs_DeviceToCheckpointDevice(&cp, dev);
+       cp.structType = sizeof(cp);
+ 
+-      ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
++      ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
+ 
+       /* Write block info */
+-      if(ok) {
++      if (ok) {
+               nBytes = nBlocks * sizeof(yaffs_BlockInfo);
+-              ok = (yaffs_CheckpointWrite(dev,dev->blockInfo,nBytes) == nBytes);
++              ok = (yaffs_CheckpointWrite(dev, dev->blockInfo, nBytes) == nBytes);
+       }
+ 
+       /* Write chunk bits */
+-      if(ok) {
++      if (ok) {
+               nBytes = nBlocks * dev->chunkBitmapStride;
+-              ok = (yaffs_CheckpointWrite(dev,dev->chunkBits,nBytes) == nBytes);
++              ok = (yaffs_CheckpointWrite(dev, dev->chunkBits, nBytes) == nBytes);
+       }
+       return   ok ? 1 : 0;
+ 
+@@ -4128,25 +4175,25 @@ static int yaffs_ReadCheckpointDevice(ya
+ 
+       int ok;
+ 
+-      ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
+-      if(!ok)
++      ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
++      if (!ok)
+               return 0;
+ 
+-      if(cp.structType != sizeof(cp))
++      if (cp.structType != sizeof(cp))
+               return 0;
+ 
+ 
+-      yaffs_CheckpointDeviceToDevice(dev,&cp);
++      yaffs_CheckpointDeviceToDevice(dev, &cp);
+ 
+       nBytes = nBlocks * sizeof(yaffs_BlockInfo);
+ 
+-      ok = (yaffs_CheckpointRead(dev,dev->blockInfo,nBytes) == nBytes);
++      ok = (yaffs_CheckpointRead(dev, dev->blockInfo, nBytes) == nBytes);
+ 
+-      if(!ok)
++      if (!ok)
+               return 0;
+       nBytes = nBlocks * dev->chunkBitmapStride;
+ 
+-      ok = (yaffs_CheckpointRead(dev,dev->chunkBits,nBytes) == nBytes);
++      ok = (yaffs_CheckpointRead(dev, dev->chunkBits, nBytes) == nBytes);
+ 
+       return ok ? 1 : 0;
+ }
+@@ -4157,7 +4204,7 @@ static void yaffs_ObjectToCheckpointObje
+ 
+       cp->objectId = obj->objectId;
+       cp->parentId = (obj->parent) ? obj->parent->objectId : 0;
+-      cp->chunkId = obj->chunkId;
++      cp->hdrChunk = obj->hdrChunk;
+       cp->variantType = obj->variantType;
+       cp->deleted = obj->deleted;
+       cp->softDeleted = obj->softDeleted;
+@@ -4168,20 +4215,28 @@ static void yaffs_ObjectToCheckpointObje
+       cp->serial = obj->serial;
+       cp->nDataChunks = obj->nDataChunks;
+ 
+-      if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
++      if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+               cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize;
+-      else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
++      else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
+               cp->fileSizeOrEquivalentObjectId = obj->variant.hardLinkVariant.equivalentObjectId;
+ }
+ 
+-static void yaffs_CheckpointObjectToObject( yaffs_Object *obj,yaffs_CheckpointObject *cp)
++static int yaffs_CheckpointObjectToObject(yaffs_Object *obj, yaffs_CheckpointObject *cp)
+ {
+ 
+       yaffs_Object *parent;
+ 
++      if (obj->variantType != cp->variantType) {
++              T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d "
++                      TCONT("chunk %d does not match existing object type %d")
++                      TENDSTR), cp->objectId, cp->variantType, cp->hdrChunk,
++                      obj->variantType));
++              return 0;
++      }
++
+       obj->objectId = cp->objectId;
+ 
+-      if(cp->parentId)
++      if (cp->parentId)
+               parent = yaffs_FindOrCreateObjectByNumber(
+                                       obj->myDev,
+                                       cp->parentId,
+@@ -4189,10 +4244,19 @@ static void yaffs_CheckpointObjectToObje
+       else
+               parent = NULL;
+ 
+-      if(parent)
++      if (parent) {
++              if (parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
++                      T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d"
++                              TCONT(" chunk %d Parent type, %d, not directory")
++                              TENDSTR),
++                              cp->objectId, cp->parentId, cp->variantType,
++                              cp->hdrChunk, parent->variantType));
++                      return 0;
++              }
+               yaffs_AddObjectToDirectory(parent, obj);
++      }
+ 
+-      obj->chunkId = cp->chunkId;
++      obj->hdrChunk = cp->hdrChunk;
+       obj->variantType = cp->variantType;
+       obj->deleted = cp->deleted;
+       obj->softDeleted = cp->softDeleted;
+@@ -4203,29 +4267,34 @@ static void yaffs_CheckpointObjectToObje
+       obj->serial = cp->serial;
+       obj->nDataChunks = cp->nDataChunks;
+ 
+-      if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
++      if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+               obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId;
+-      else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
++      else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
+               obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId;
+ 
+-      if(obj->objectId >= YAFFS_NOBJECT_BUCKETS)
++      if (obj->hdrChunk > 0)
+               obj->lazyLoaded = 1;
++      return 1;
+ }
+ 
+ 
+ 
+-static int yaffs_CheckpointTnodeWorker(yaffs_Object * in, yaffs_Tnode * tn,
+-                                      __u32 level, int chunkOffset)
++static int yaffs_CheckpointTnodeWorker(yaffs_Object *in, yaffs_Tnode *tn,
++                                      __u32 level, int chunkOffset)
+ {
+       int i;
+       yaffs_Device *dev = in->myDev;
+       int ok = 1;
+-      int nTnodeBytes = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
++      int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
++
++      if (tnodeSize < sizeof(yaffs_Tnode))
++              tnodeSize = sizeof(yaffs_Tnode);
++
+ 
+       if (tn) {
+               if (level > 0) {
+ 
+-                      for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++){
++                      for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
+                               if (tn->internal[i]) {
+                                       ok = yaffs_CheckpointTnodeWorker(in,
+                                                       tn->internal[i],
+@@ -4235,10 +4304,9 @@ static int yaffs_CheckpointTnodeWorker(y
+                       }
+               } else if (level == 0) {
+                       __u32 baseOffset = chunkOffset <<  YAFFS_TNODES_LEVEL0_BITS;
+-                      /* printf("write tnode at %d\n",baseOffset); */
+-                      ok = (yaffs_CheckpointWrite(dev,&baseOffset,sizeof(baseOffset)) == sizeof(baseOffset));
+-                      if(ok)
+-                              ok = (yaffs_CheckpointWrite(dev,tn,nTnodeBytes) == nTnodeBytes);
++                      ok = (yaffs_CheckpointWrite(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset));
++                      if (ok)
++                              ok = (yaffs_CheckpointWrite(dev, tn, tnodeSize) == tnodeSize);
+               }
+       }
+ 
+@@ -4251,13 +4319,13 @@ static int yaffs_WriteCheckpointTnodes(y
+       __u32 endMarker = ~0;
+       int ok = 1;
+ 
+-      if(obj->variantType == YAFFS_OBJECT_TYPE_FILE){
++      if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
+               ok = yaffs_CheckpointTnodeWorker(obj,
+                                           obj->variant.fileVariant.top,
+                                           obj->variant.fileVariant.topLevel,
+                                           0);
+-              if(ok)
+-                      ok = (yaffs_CheckpointWrite(obj->myDev,&endMarker,sizeof(endMarker)) ==
++              if (ok)
++                      ok = (yaffs_CheckpointWrite(obj->myDev, &endMarker, sizeof(endMarker)) ==
+                               sizeof(endMarker));
+       }
+ 
+@@ -4272,38 +4340,38 @@ static int yaffs_ReadCheckpointTnodes(ya
+       yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant;
+       yaffs_Tnode *tn;
+       int nread = 0;
++      int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+ 
+-      ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
++      if (tnodeSize < sizeof(yaffs_Tnode))
++              tnodeSize = sizeof(yaffs_Tnode);
+ 
+-      while(ok && (~baseChunk)){
++      ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
++
++      while (ok && (~baseChunk)) {
+               nread++;
+               /* Read level 0 tnode */
+ 
+ 
+-              /* printf("read  tnode at %d\n",baseChunk); */
+               tn = yaffs_GetTnodeRaw(dev);
+-              if(tn)
+-                      ok = (yaffs_CheckpointRead(dev,tn,(dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8) ==
+-                            (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
++              if (tn)
++                      ok = (yaffs_CheckpointRead(dev, tn, tnodeSize) == tnodeSize);
+               else
+                       ok = 0;
+ 
+-              if(tn && ok){
++              if (tn && ok)
+                       ok = yaffs_AddOrFindLevel0Tnode(dev,
+-                                                      fileStructPtr,
+-                                                      baseChunk,
+-                                                      tn) ? 1 : 0;
++                                                      fileStructPtr,
++                                                      baseChunk,
++                                                      tn) ? 1 : 0;
+ 
+-              }
+-
+-              if(ok)
+-                      ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
++              if (ok)
++                      ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
+ 
+       }
+ 
+-      T(YAFFS_TRACE_CHECKPOINT,(
++      T(YAFFS_TRACE_CHECKPOINT, (
+               TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR),
+-              nread,baseChunk,ok));
++              nread, baseChunk, ok));
+ 
+       return ok ? 1 : 0;
+ }
+@@ -4315,41 +4383,40 @@ static int yaffs_WriteCheckpointObjects(
+       yaffs_CheckpointObject cp;
+       int i;
+       int ok = 1;
+-      struct list_head *lh;
++      struct ylist_head *lh;
+ 
+ 
+       /* Iterate through the objects in each hash entry,
+        * dumping them to the checkpointing stream.
+        */
+ 
+-       for(i = 0; ok &&  i <  YAFFS_NOBJECT_BUCKETS; i++){
+-              list_for_each(lh, &dev->objectBucket[i].list) {
++      for (i = 0; ok &&  i <  YAFFS_NOBJECT_BUCKETS; i++) {
++              ylist_for_each(lh, &dev->objectBucket[i].list) {
+                       if (lh) {
+-                              obj = list_entry(lh, yaffs_Object, hashLink);
++                              obj = ylist_entry(lh, yaffs_Object, hashLink);
+                               if (!obj->deferedFree) {
+-                                      yaffs_ObjectToCheckpointObject(&cp,obj);
++                                      yaffs_ObjectToCheckpointObject(&cp, obj);
+                                       cp.structType = sizeof(cp);
+ 
+-                                      T(YAFFS_TRACE_CHECKPOINT,(
++                                      T(YAFFS_TRACE_CHECKPOINT, (
+                                               TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %x" TENDSTR),
+-                                              cp.objectId,cp.parentId,cp.variantType,cp.chunkId,(unsigned) obj));
++                                              cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk, (unsigned) obj));
+ 
+-                                      ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
++                                      ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
+ 
+-                                      if(ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE){
++                                      if (ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+                                               ok = yaffs_WriteCheckpointTnodes(obj);
+-                                      }
+                               }
+                       }
+               }
+-       }
++      }
+ 
+-       /* Dump end of list */
+-      memset(&cp,0xFF,sizeof(yaffs_CheckpointObject));
++      /* Dump end of list */
++      memset(&cp, 0xFF, sizeof(yaffs_CheckpointObject));
+       cp.structType = sizeof(cp);
+ 
+-      if(ok)
+-              ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
++      if (ok)
++              ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
+ 
+       return ok ? 1 : 0;
+ }
+@@ -4362,38 +4429,39 @@ static int yaffs_ReadCheckpointObjects(y
+       int done = 0;
+       yaffs_Object *hardList = NULL;
+ 
+-      while(ok && !done) {
+-              ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
+-              if(cp.structType != sizeof(cp)) {
+-                      T(YAFFS_TRACE_CHECKPOINT,(TSTR("struct size %d instead of %d ok %d"TENDSTR),
+-                              cp.structType,sizeof(cp),ok));
++      while (ok && !done) {
++              ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
++              if (cp.structType != sizeof(cp)) {
++                      T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR),
++                              cp.structType, sizeof(cp), ok));
+                       ok = 0;
+               }
+ 
+-              T(YAFFS_TRACE_CHECKPOINT,(TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR),
+-                      cp.objectId,cp.parentId,cp.variantType,cp.chunkId));
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR),
++                      cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk));
+ 
+-              if(ok && cp.objectId == ~0)
++              if (ok && cp.objectId == ~0)
+                       done = 1;
+-              else if(ok){
+-                      obj = yaffs_FindOrCreateObjectByNumber(dev,cp.objectId, cp.variantType);
+-                      if(obj) {
+-                              yaffs_CheckpointObjectToObject(obj,&cp);
+-                              if(obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
++              else if (ok) {
++                      obj = yaffs_FindOrCreateObjectByNumber(dev, cp.objectId, cp.variantType);
++                      if (obj) {
++                              ok = yaffs_CheckpointObjectToObject(obj, &cp);
++                              if (!ok)
++                                      break;
++                              if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
+                                       ok = yaffs_ReadCheckpointTnodes(obj);
+-                              } else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
++                              } else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
+                                       obj->hardLinks.next =
+-                                                  (struct list_head *)
+-                                                  hardList;
++                                              (struct ylist_head *) hardList;
+                                       hardList = obj;
+                               }
+-
+-                      }
++                      } else
++                              ok = 0;
+               }
+       }
+ 
+-      if(ok)
+-              yaffs_HardlinkFixup(dev,hardList);
++      if (ok)
++              yaffs_HardlinkFixup(dev, hardList);
+ 
+       return ok ? 1 : 0;
+ }
+@@ -4403,11 +4471,11 @@ static int yaffs_WriteCheckpointSum(yaff
+       __u32 checkpointSum;
+       int ok;
+ 
+-      yaffs_GetCheckpointSum(dev,&checkpointSum);
++      yaffs_GetCheckpointSum(dev, &checkpointSum);
+ 
+-      ok = (yaffs_CheckpointWrite(dev,&checkpointSum,sizeof(checkpointSum)) == sizeof(checkpointSum));
++      ok = (yaffs_CheckpointWrite(dev, &checkpointSum, sizeof(checkpointSum)) == sizeof(checkpointSum));
+ 
+-      if(!ok)
++      if (!ok)
+               return 0;
+ 
+       return 1;
+@@ -4419,14 +4487,14 @@ static int yaffs_ReadCheckpointSum(yaffs
+       __u32 checkpointSum1;
+       int ok;
+ 
+-      yaffs_GetCheckpointSum(dev,&checkpointSum0);
++      yaffs_GetCheckpointSum(dev, &checkpointSum0);
+ 
+-      ok = (yaffs_CheckpointRead(dev,&checkpointSum1,sizeof(checkpointSum1)) == sizeof(checkpointSum1));
++      ok = (yaffs_CheckpointRead(dev, &checkpointSum1, sizeof(checkpointSum1)) == sizeof(checkpointSum1));
+ 
+-      if(!ok)
++      if (!ok)
+               return 0;
+ 
+-      if(checkpointSum0 != checkpointSum1)
++      if (checkpointSum0 != checkpointSum1)
+               return 0;
+ 
+       return 1;
+@@ -4435,46 +4503,43 @@ static int yaffs_ReadCheckpointSum(yaffs
+ 
+ static int yaffs_WriteCheckpointData(yaffs_Device *dev)
+ {
+-
+       int ok = 1;
+ 
+-      if(dev->skipCheckpointWrite || !dev->isYaffs2){
+-              T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint write" TENDSTR)));
++      if (dev->skipCheckpointWrite || !dev->isYaffs2) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR)));
+               ok = 0;
+       }
+ 
+-      if(ok)
+-              ok = yaffs_CheckpointOpen(dev,1);
++      if (ok)
++              ok = yaffs_CheckpointOpen(dev, 1);
+ 
+-      if(ok){
+-              T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR)));
+-              ok = yaffs_WriteCheckpointValidityMarker(dev,1);
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
++              ok = yaffs_WriteCheckpointValidityMarker(dev, 1);
+       }
+-      if(ok){
+-              T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint device" TENDSTR)));
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR)));
+               ok = yaffs_WriteCheckpointDevice(dev);
+       }
+-      if(ok){
+-              T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint objects" TENDSTR)));
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR)));
+               ok = yaffs_WriteCheckpointObjects(dev);
+       }
+-      if(ok){
+-              T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR)));
+-              ok = yaffs_WriteCheckpointValidityMarker(dev,0);
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
++              ok = yaffs_WriteCheckpointValidityMarker(dev, 0);
+       }
+ 
+-      if(ok){
++      if (ok)
+               ok = yaffs_WriteCheckpointSum(dev);
+-      }
+-
+ 
+-      if(!yaffs_CheckpointClose(dev))
+-               ok = 0;
++      if (!yaffs_CheckpointClose(dev))
++              ok = 0;
+ 
+-      if(ok)
+-              dev->isCheckpointed = 1;
+-       else
+-              dev->isCheckpointed = 0;
++      if (ok)
++              dev->isCheckpointed = 1;
++      else
++              dev->isCheckpointed = 0;
+ 
+       return dev->isCheckpointed;
+ }
+@@ -4483,43 +4548,43 @@ static int yaffs_ReadCheckpointData(yaff
+ {
+       int ok = 1;
+ 
+-      if(dev->skipCheckpointRead || !dev->isYaffs2){
+-              T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint read" TENDSTR)));
++      if (dev->skipCheckpointRead || !dev->isYaffs2) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR)));
+               ok = 0;
+       }
+ 
+-      if(ok)
+-              ok = yaffs_CheckpointOpen(dev,0); /* open for read */
++      if (ok)
++              ok = yaffs_CheckpointOpen(dev, 0); /* open for read */
+ 
+-      if(ok){
+-              T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR)));
+-              ok = yaffs_ReadCheckpointValidityMarker(dev,1);
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
++              ok = yaffs_ReadCheckpointValidityMarker(dev, 1);
+       }
+-      if(ok){
+-              T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint device" TENDSTR)));
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR)));
+               ok = yaffs_ReadCheckpointDevice(dev);
+       }
+-      if(ok){
+-              T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint objects" TENDSTR)));
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR)));
+               ok = yaffs_ReadCheckpointObjects(dev);
+       }
+-      if(ok){
+-              T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR)));
+-              ok = yaffs_ReadCheckpointValidityMarker(dev,0);
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
++              ok = yaffs_ReadCheckpointValidityMarker(dev, 0);
+       }
+ 
+-      if(ok){
++      if (ok) {
+               ok = yaffs_ReadCheckpointSum(dev);
+-              T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint checksum %d" TENDSTR),ok));
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok));
+       }
+ 
+-      if(!yaffs_CheckpointClose(dev))
++      if (!yaffs_CheckpointClose(dev))
+               ok = 0;
+ 
+-      if(ok)
+-              dev->isCheckpointed = 1;
+-       else
+-              dev->isCheckpointed = 0;
++      if (ok)
++              dev->isCheckpointed = 1;
++      else
++              dev->isCheckpointed = 0;
+ 
+       return ok ? 1 : 0;
+ 
+@@ -4527,11 +4592,11 @@ static int yaffs_ReadCheckpointData(yaff
+ 
+ static void yaffs_InvalidateCheckpoint(yaffs_Device *dev)
+ {
+-      if(dev->isCheckpointed ||
+-         dev->blocksInCheckpoint > 0){
++      if (dev->isCheckpointed ||
++                      dev->blocksInCheckpoint > 0) {
+               dev->isCheckpointed = 0;
+               yaffs_CheckpointInvalidateStream(dev);
+-              if(dev->superBlock && dev->markSuperBlockDirty)
++              if (dev->superBlock && dev->markSuperBlockDirty)
+                       dev->markSuperBlockDirty(dev->superBlock);
+       }
+ }
+@@ -4540,18 +4605,18 @@ static void yaffs_InvalidateCheckpoint(y
+ int yaffs_CheckpointSave(yaffs_Device *dev)
+ {
+ 
+-      T(YAFFS_TRACE_CHECKPOINT,(TSTR("save entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
+ 
+       yaffs_VerifyObjects(dev);
+       yaffs_VerifyBlocks(dev);
+       yaffs_VerifyFreeChunks(dev);
+ 
+-      if(!dev->isCheckpointed) {
++      if (!dev->isCheckpointed) {
+               yaffs_InvalidateCheckpoint(dev);
+               yaffs_WriteCheckpointData(dev);
+       }
+ 
+-      T(YAFFS_TRACE_ALWAYS,(TSTR("save exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
++      T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
+ 
+       return dev->isCheckpointed;
+ }
+@@ -4559,17 +4624,17 @@ int yaffs_CheckpointSave(yaffs_Device *d
+ int yaffs_CheckpointRestore(yaffs_Device *dev)
+ {
+       int retval;
+-      T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
+ 
+       retval = yaffs_ReadCheckpointData(dev);
+ 
+-      if(dev->isCheckpointed){
++      if (dev->isCheckpointed) {
+               yaffs_VerifyObjects(dev);
+               yaffs_VerifyBlocks(dev);
+               yaffs_VerifyFreeChunks(dev);
+       }
+ 
+-      T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
+ 
+       return retval;
+ }
+@@ -4584,12 +4649,12 @@ int yaffs_CheckpointRestore(yaffs_Device
+  * Curve-balls: the first chunk might also be the last chunk.
+  */
+ 
+-int yaffs_ReadDataFromFile(yaffs_Object * in, __u8 * buffer, loff_t offset,
+-                         int nBytes)
++int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset,
++                      int nBytes)
+ {
+ 
+       int chunk;
+-      int start;
++      __u32 start;
+       int nToCopy;
+       int n = nBytes;
+       int nDone = 0;
+@@ -4600,27 +4665,26 @@ int yaffs_ReadDataFromFile(yaffs_Object
+       dev = in->myDev;
+ 
+       while (n > 0) {
+-              //chunk = offset / dev->nDataBytesPerChunk + 1;
+-              //start = offset % dev->nDataBytesPerChunk;
+-              yaffs_AddrToChunk(dev,offset,&chunk,&start);
++              /* chunk = offset / dev->nDataBytesPerChunk + 1; */
++              /* start = offset % dev->nDataBytesPerChunk; */
++              yaffs_AddrToChunk(dev, offset, &chunk, &start);
+               chunk++;
+ 
+               /* OK now check for the curveball where the start and end are in
+                * the same chunk.
+                */
+-              if ((start + n) < dev->nDataBytesPerChunk) {
++              if ((start + n) < dev->nDataBytesPerChunk)
+                       nToCopy = n;
+-              } else {
++              else
+                       nToCopy = dev->nDataBytesPerChunk - start;
+-              }
+ 
+               cache = yaffs_FindChunkCache(in, chunk);
+ 
+               /* If the chunk is already in the cache or it is less than a whole chunk
+-               * then use the cache (if there is caching)
++               * or we're using inband tags then use the cache (if there is caching)
+                * else bypass the cache.
+                */
+-              if (cache || nToCopy != dev->nDataBytesPerChunk) {
++              if (cache || nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) {
+                       if (dev->nShortOpCaches > 0) {
+ 
+                               /* If we can't find the data in the cache, then load it up. */
+@@ -4641,14 +4705,9 @@ int yaffs_ReadDataFromFile(yaffs_Object
+ 
+                               cache->locked = 1;
+ 
+-#ifdef CONFIG_YAFFS_WINCE
+-                              yfsd_UnlockYAFFS(TRUE);
+-#endif
++
+                               memcpy(buffer, &cache->data[start], nToCopy);
+ 
+-#ifdef CONFIG_YAFFS_WINCE
+-                              yfsd_LockYAFFS(TRUE);
+-#endif
+                               cache->locked = 0;
+                       } else {
+                               /* Read into the local buffer then copy..*/
+@@ -4657,41 +4716,19 @@ int yaffs_ReadDataFromFile(yaffs_Object
+                                   yaffs_GetTempBuffer(dev, __LINE__);
+                               yaffs_ReadChunkDataFromObject(in, chunk,
+                                                             localBuffer);
+-#ifdef CONFIG_YAFFS_WINCE
+-                              yfsd_UnlockYAFFS(TRUE);
+-#endif
++
+                               memcpy(buffer, &localBuffer[start], nToCopy);
+ 
+-#ifdef CONFIG_YAFFS_WINCE
+-                              yfsd_LockYAFFS(TRUE);
+-#endif
++
+                               yaffs_ReleaseTempBuffer(dev, localBuffer,
+                                                       __LINE__);
+                       }
+ 
+               } else {
+-#ifdef CONFIG_YAFFS_WINCE
+-                      __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
+-
+-                      /* Under WinCE can't do direct transfer. Need to use a local buffer.
+-                       * This is because we otherwise screw up WinCE's memory mapper
+-                       */
+-                      yaffs_ReadChunkDataFromObject(in, chunk, localBuffer);
+-
+-#ifdef CONFIG_YAFFS_WINCE
+-                      yfsd_UnlockYAFFS(TRUE);
+-#endif
+-                      memcpy(buffer, localBuffer, dev->nDataBytesPerChunk);
+ 
+-#ifdef CONFIG_YAFFS_WINCE
+-                      yfsd_LockYAFFS(TRUE);
+-                      yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
+-#endif
+-
+-#else
+                       /* A full chunk. Read directly into the supplied buffer. */
+                       yaffs_ReadChunkDataFromObject(in, chunk, buffer);
+-#endif
++
+               }
+ 
+               n -= nToCopy;
+@@ -4704,28 +4741,37 @@ int yaffs_ReadDataFromFile(yaffs_Object
+       return nDone;
+ }
+ 
+-int yaffs_WriteDataToFile(yaffs_Object * in, const __u8 * buffer, loff_t offset,
+-                        int nBytes, int writeThrough)
++int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
++                      int nBytes, int writeThrough)
+ {
+ 
+       int chunk;
+-      int start;
++      __u32 start;
+       int nToCopy;
+       int n = nBytes;
+       int nDone = 0;
+       int nToWriteBack;
+       int startOfWrite = offset;
+       int chunkWritten = 0;
+-      int nBytesRead;
++      __u32 nBytesRead;
++      __u32 chunkStart;
+ 
+       yaffs_Device *dev;
+ 
+       dev = in->myDev;
+ 
+       while (n > 0 && chunkWritten >= 0) {
+-              //chunk = offset / dev->nDataBytesPerChunk + 1;
+-              //start = offset % dev->nDataBytesPerChunk;
+-              yaffs_AddrToChunk(dev,offset,&chunk,&start);
++              /* chunk = offset / dev->nDataBytesPerChunk + 1; */
++              /* start = offset % dev->nDataBytesPerChunk; */
++              yaffs_AddrToChunk(dev, offset, &chunk, &start);
++
++              if (chunk * dev->nDataBytesPerChunk + start != offset ||
++                              start >= dev->nDataBytesPerChunk) {
++                      T(YAFFS_TRACE_ERROR, (
++                         TSTR("AddrToChunk of offset %d gives chunk %d start %d"
++                         TENDSTR),
++                         (int)offset, chunk, start));
++              }
+               chunk++;
+ 
+               /* OK now check for the curveball where the start and end are in
+@@ -4740,25 +4786,32 @@ int yaffs_WriteDataToFile(yaffs_Object *
+                        * we need to write back as much as was there before.
+                        */
+ 
+-                      nBytesRead =
+-                          in->variant.fileVariant.fileSize -
+-                          ((chunk - 1) * dev->nDataBytesPerChunk);
++                      chunkStart = ((chunk - 1) * dev->nDataBytesPerChunk);
++
++                      if (chunkStart > in->variant.fileVariant.fileSize)
++                              nBytesRead = 0; /* Past end of file */
++                      else
++                              nBytesRead = in->variant.fileVariant.fileSize - chunkStart;
+ 
+-                      if (nBytesRead > dev->nDataBytesPerChunk) {
++                      if (nBytesRead > dev->nDataBytesPerChunk)
+                               nBytesRead = dev->nDataBytesPerChunk;
+-                      }
+ 
+                       nToWriteBack =
+                           (nBytesRead >
+                            (start + n)) ? nBytesRead : (start + n);
+ 
++                      if (nToWriteBack < 0 || nToWriteBack > dev->nDataBytesPerChunk)
++                              YBUG();
++
+               } else {
+                       nToCopy = dev->nDataBytesPerChunk - start;
+                       nToWriteBack = dev->nDataBytesPerChunk;
+               }
+ 
+-              if (nToCopy != dev->nDataBytesPerChunk) {
+-                      /* An incomplete start or end chunk (or maybe both start and end chunk) */
++              if (nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) {
++                      /* An incomplete start or end chunk (or maybe both start and end chunk),
++                       * or we're using inband tags, so we want to use the cache buffers.
++                       */
+                       if (dev->nShortOpCaches > 0) {
+                               yaffs_ChunkCache *cache;
+                               /* If we can't find the data in the cache, then load the cache */
+@@ -4775,10 +4828,9 @@ int yaffs_WriteDataToFile(yaffs_Object *
+                                       yaffs_ReadChunkDataFromObject(in, chunk,
+                                                                     cache->
+                                                                     data);
+-                              }
+-                              else if(cache &&
+-                                      !cache->dirty &&
+-                                      !yaffs_CheckSpaceForAllocation(in->myDev)){
++                              } else if (cache &&
++                                      !cache->dirty &&
++                                      !yaffs_CheckSpaceForAllocation(in->myDev)) {
+                                       /* Drop the cache if it was a read cache item and
+                                        * no space check has been made for it.
+                                        */
+@@ -4788,16 +4840,12 @@ int yaffs_WriteDataToFile(yaffs_Object *
+                               if (cache) {
+                                       yaffs_UseChunkCache(dev, cache, 1);
+                                       cache->locked = 1;
+-#ifdef CONFIG_YAFFS_WINCE
+-                                      yfsd_UnlockYAFFS(TRUE);
+-#endif
++
+ 
+                                       memcpy(&cache->data[start], buffer,
+                                              nToCopy);
+ 
+-#ifdef CONFIG_YAFFS_WINCE
+-                                      yfsd_LockYAFFS(TRUE);
+-#endif
++
+                                       cache->locked = 0;
+                                       cache->nBytes = nToWriteBack;
+ 
+@@ -4825,15 +4873,10 @@ int yaffs_WriteDataToFile(yaffs_Object *
+                               yaffs_ReadChunkDataFromObject(in, chunk,
+                                                             localBuffer);
+ 
+-#ifdef CONFIG_YAFFS_WINCE
+-                              yfsd_UnlockYAFFS(TRUE);
+-#endif
++
+ 
+                               memcpy(&localBuffer[start], buffer, nToCopy);
+ 
+-#ifdef CONFIG_YAFFS_WINCE
+-                              yfsd_LockYAFFS(TRUE);
+-#endif
+                               chunkWritten =
+                                   yaffs_WriteChunkDataToObject(in, chunk,
+                                                                localBuffer,
+@@ -4846,31 +4889,15 @@ int yaffs_WriteDataToFile(yaffs_Object *
+                       }
+ 
+               } else {
+-
+-#ifdef CONFIG_YAFFS_WINCE
+-                      /* Under WinCE can't do direct transfer. Need to use a local buffer.
+-                       * This is because we otherwise screw up WinCE's memory mapper
+-                       */
+-                      __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
+-#ifdef CONFIG_YAFFS_WINCE
+-                      yfsd_UnlockYAFFS(TRUE);
+-#endif
+-                      memcpy(localBuffer, buffer, dev->nDataBytesPerChunk);
+-#ifdef CONFIG_YAFFS_WINCE
+-                      yfsd_LockYAFFS(TRUE);
+-#endif
+-                      chunkWritten =
+-                          yaffs_WriteChunkDataToObject(in, chunk, localBuffer,
+-                                                       dev->nDataBytesPerChunk,
+-                                                       0);
+-                      yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
+-#else
+                       /* A full chunk. Write directly from the supplied buffer. */
++
++
++
+                       chunkWritten =
+                           yaffs_WriteChunkDataToObject(in, chunk, buffer,
+                                                        dev->nDataBytesPerChunk,
+                                                        0);
+-#endif
++
+                       /* Since we've overwritten the cached data, we better invalidate it. */
+                       yaffs_InvalidateChunkCache(in, chunk);
+               }
+@@ -4886,9 +4913,8 @@ int yaffs_WriteDataToFile(yaffs_Object *
+ 
+       /* Update file object */
+ 
+-      if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize) {
++      if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize)
+               in->variant.fileVariant.fileSize = (startOfWrite + nDone);
+-      }
+ 
+       in->dirty = 1;
+ 
+@@ -4898,7 +4924,7 @@ int yaffs_WriteDataToFile(yaffs_Object *
+ 
+ /* ---------------------- File resizing stuff ------------------ */
+ 
+-static void yaffs_PruneResizedChunks(yaffs_Object * in, int newSize)
++static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize)
+ {
+ 
+       yaffs_Device *dev = in->myDev;
+@@ -4939,11 +4965,11 @@ static void yaffs_PruneResizedChunks(yaf
+ 
+ }
+ 
+-int yaffs_ResizeFile(yaffs_Object * in, loff_t newSize)
++int yaffs_ResizeFile(yaffs_Object *in, loff_t newSize)
+ {
+ 
+       int oldFileSize = in->variant.fileVariant.fileSize;
+-      int newSizeOfPartialChunk;
++      __u32 newSizeOfPartialChunk;
+       int newFullChunks;
+ 
+       yaffs_Device *dev = in->myDev;
+@@ -4955,13 +4981,11 @@ int yaffs_ResizeFile(yaffs_Object * in,
+ 
+       yaffs_CheckGarbageCollection(dev);
+ 
+-      if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
+-              return yaffs_GetFileSize(in);
+-      }
++      if (in->variantType != YAFFS_OBJECT_TYPE_FILE)
++              return YAFFS_FAIL;
+ 
+-      if (newSize == oldFileSize) {
+-              return oldFileSize;
+-      }
++      if (newSize == oldFileSize)
++              return YAFFS_OK;
+ 
+       if (newSize < oldFileSize) {
+ 
+@@ -4994,21 +5018,20 @@ int yaffs_ResizeFile(yaffs_Object * in,
+       }
+ 
+ 
+-
+       /* Write a new object header.
+        * show we've shrunk the file, if need be
+        * Do this only if the file is not in the deleted directories.
+        */
+-      if (in->parent->objectId != YAFFS_OBJECTID_UNLINKED &&
+-          in->parent->objectId != YAFFS_OBJECTID_DELETED) {
++      if (in->parent &&
++          in->parent->objectId != YAFFS_OBJECTID_UNLINKED &&
++          in->parent->objectId != YAFFS_OBJECTID_DELETED)
+               yaffs_UpdateObjectHeader(in, NULL, 0,
+                                        (newSize < oldFileSize) ? 1 : 0, 0);
+-      }
+ 
+-      return newSize;
++      return YAFFS_OK;
+ }
+ 
+-loff_t yaffs_GetFileSize(yaffs_Object * obj)
++loff_t yaffs_GetFileSize(yaffs_Object *obj)
+ {
+       obj = yaffs_GetEquivalentObject(obj);
+ 
+@@ -5024,7 +5047,7 @@ loff_t yaffs_GetFileSize(yaffs_Object *
+ 
+ 
+ 
+-int yaffs_FlushFile(yaffs_Object * in, int updateTime)
++int yaffs_FlushFile(yaffs_Object *in, int updateTime)
+ {
+       int retVal;
+       if (in->dirty) {
+@@ -5039,9 +5062,8 @@ int yaffs_FlushFile(yaffs_Object * in, i
+ #endif
+               }
+ 
+-              retVal =
+-                  (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >=
+-                   0) ? YAFFS_OK : YAFFS_FAIL;
++              retVal = (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >=
++                      0) ? YAFFS_OK : YAFFS_FAIL;
+       } else {
+               retVal = YAFFS_OK;
+       }
+@@ -5050,7 +5072,7 @@ int yaffs_FlushFile(yaffs_Object * in, i
+ 
+ }
+ 
+-static int yaffs_DoGenericObjectDeletion(yaffs_Object * in)
++static int yaffs_DoGenericObjectDeletion(yaffs_Object *in)
+ {
+ 
+       /* First off, invalidate the file's data in the cache, without flushing. */
+@@ -5058,13 +5080,13 @@ static int yaffs_DoGenericObjectDeletion
+ 
+       if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) {
+               /* Move to the unlinked directory so we have a record that it was deleted. */
+-              yaffs_ChangeObjectName(in, in->myDev->deletedDir,"deleted", 0, 0);
++              yaffs_ChangeObjectName(in, in->myDev->deletedDir, _Y("deleted"), 0, 0);
+ 
+       }
+ 
+       yaffs_RemoveObjectFromDirectory(in);
+-      yaffs_DeleteChunk(in->myDev, in->chunkId, 1, __LINE__);
+-      in->chunkId = -1;
++      yaffs_DeleteChunk(in->myDev, in->hdrChunk, 1, __LINE__);
++      in->hdrChunk = 0;
+ 
+       yaffs_FreeObject(in);
+       return YAFFS_OK;
+@@ -5075,62 +5097,63 @@ static int yaffs_DoGenericObjectDeletion
+  * and the inode associated with the file.
+  * It does not delete the links associated with the file.
+  */
+-static int yaffs_UnlinkFile(yaffs_Object * in)
++static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in)
+ {
+ 
+       int retVal;
+       int immediateDeletion = 0;
+ 
+-      if (1) {
+ #ifdef __KERNEL__
+-              if (!in->myInode) {
+-                      immediateDeletion = 1;
+-
+-              }
++      if (!in->myInode)
++              immediateDeletion = 1;
+ #else
+-              if (in->inUse <= 0) {
+-                      immediateDeletion = 1;
+-
+-              }
++      if (in->inUse <= 0)
++              immediateDeletion = 1;
+ #endif
+-              if (immediateDeletion) {
+-                      retVal =
+-                          yaffs_ChangeObjectName(in, in->myDev->deletedDir,
+-                                                 "deleted", 0, 0);
+-                      T(YAFFS_TRACE_TRACING,
+-                        (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
+-                         in->objectId));
+-                      in->deleted = 1;
+-                      in->myDev->nDeletedFiles++;
+-                      if (0 && in->myDev->isYaffs2) {
+-                              yaffs_ResizeFile(in, 0);
+-                      }
+-                      yaffs_SoftDeleteFile(in);
+-              } else {
+-                      retVal =
+-                          yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,
+-                                                 "unlinked", 0, 0);
+-              }
+ 
++      if (immediateDeletion) {
++              retVal =
++                  yaffs_ChangeObjectName(in, in->myDev->deletedDir,
++                                         _Y("deleted"), 0, 0);
++              T(YAFFS_TRACE_TRACING,
++                (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
++                 in->objectId));
++              in->deleted = 1;
++              in->myDev->nDeletedFiles++;
++              if (1 || in->myDev->isYaffs2)
++                      yaffs_ResizeFile(in, 0);
++              yaffs_SoftDeleteFile(in);
++      } else {
++              retVal =
++                  yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,
++                                         _Y("unlinked"), 0, 0);
+       }
++
++
+       return retVal;
+ }
+ 
+-int yaffs_DeleteFile(yaffs_Object * in)
++int yaffs_DeleteFile(yaffs_Object *in)
+ {
+       int retVal = YAFFS_OK;
++      int deleted = in->deleted;
++
++      yaffs_ResizeFile(in, 0);
+ 
+       if (in->nDataChunks > 0) {
+-              /* Use soft deletion if there is data in the file */
+-              if (!in->unlinked) {
+-                      retVal = yaffs_UnlinkFile(in);
+-              }
++              /* Use soft deletion if there is data in the file.
++               * That won't be the case if it has been resized to zero.
++               */
++              if (!in->unlinked)
++                      retVal = yaffs_UnlinkFileIfNeeded(in);
++
+               if (retVal == YAFFS_OK && in->unlinked && !in->deleted) {
+                       in->deleted = 1;
++                      deleted = 1;
+                       in->myDev->nDeletedFiles++;
+                       yaffs_SoftDeleteFile(in);
+               }
+-              return in->deleted ? YAFFS_OK : YAFFS_FAIL;
++              return deleted ? YAFFS_OK : YAFFS_FAIL;
+       } else {
+               /* The file has no data chunks so we toss it immediately */
+               yaffs_FreeTnode(in->myDev, in->variant.fileVariant.top);
+@@ -5141,62 +5164,75 @@ int yaffs_DeleteFile(yaffs_Object * in)
+       }
+ }
+ 
+-static int yaffs_DeleteDirectory(yaffs_Object * in)
++static int yaffs_DeleteDirectory(yaffs_Object *in)
+ {
+       /* First check that the directory is empty. */
+-      if (list_empty(&in->variant.directoryVariant.children)) {
++      if (ylist_empty(&in->variant.directoryVariant.children))
+               return yaffs_DoGenericObjectDeletion(in);
+-      }
+ 
+       return YAFFS_FAIL;
+ 
+ }
+ 
+-static int yaffs_DeleteSymLink(yaffs_Object * in)
++static int yaffs_DeleteSymLink(yaffs_Object *in)
+ {
+       YFREE(in->variant.symLinkVariant.alias);
+ 
+       return yaffs_DoGenericObjectDeletion(in);
+ }
+ 
+-static int yaffs_DeleteHardLink(yaffs_Object * in)
++static int yaffs_DeleteHardLink(yaffs_Object *in)
+ {
+       /* remove this hardlink from the list assocaited with the equivalent
+        * object
+        */
+-      list_del(&in->hardLinks);
++      ylist_del_init(&in->hardLinks);
+       return yaffs_DoGenericObjectDeletion(in);
+ }
+ 
+-static void yaffs_DestroyObject(yaffs_Object * obj)
++int yaffs_DeleteObject(yaffs_Object *obj)
+ {
++int retVal = -1;
+       switch (obj->variantType) {
+       case YAFFS_OBJECT_TYPE_FILE:
+-              yaffs_DeleteFile(obj);
++              retVal = yaffs_DeleteFile(obj);
+               break;
+       case YAFFS_OBJECT_TYPE_DIRECTORY:
+-              yaffs_DeleteDirectory(obj);
++              return yaffs_DeleteDirectory(obj);
+               break;
+       case YAFFS_OBJECT_TYPE_SYMLINK:
+-              yaffs_DeleteSymLink(obj);
++              retVal = yaffs_DeleteSymLink(obj);
+               break;
+       case YAFFS_OBJECT_TYPE_HARDLINK:
+-              yaffs_DeleteHardLink(obj);
++              retVal = yaffs_DeleteHardLink(obj);
+               break;
+       case YAFFS_OBJECT_TYPE_SPECIAL:
+-              yaffs_DoGenericObjectDeletion(obj);
++              retVal = yaffs_DoGenericObjectDeletion(obj);
+               break;
+       case YAFFS_OBJECT_TYPE_UNKNOWN:
++              retVal = 0;
+               break;          /* should not happen. */
+       }
++
++      return retVal;
+ }
+ 
+-static int yaffs_UnlinkWorker(yaffs_Object * obj)
++static int yaffs_UnlinkWorker(yaffs_Object *obj)
+ {
+ 
++      int immediateDeletion = 0;
++
++#ifdef __KERNEL__
++      if (!obj->myInode)
++              immediateDeletion = 1;
++#else
++      if (obj->inUse <= 0)
++              immediateDeletion = 1;
++#endif
++
+       if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
+               return yaffs_DeleteHardLink(obj);
+-      } else if (!list_empty(&obj->hardLinks)) {
++      } else if (!ylist_empty(&obj->hardLinks)) {
+               /* Curve ball: We're unlinking an object that has a hardlink.
+                *
+                * This problem arises because we are not strictly following
+@@ -5215,24 +5251,24 @@ static int yaffs_UnlinkWorker(yaffs_Obje
+               int retVal;
+               YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
+ 
+-              hl = list_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
++              hl = ylist_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
+ 
+-              list_del_init(&hl->hardLinks);
+-              list_del_init(&hl->siblings);
++              ylist_del_init(&hl->hardLinks);
++              ylist_del_init(&hl->siblings);
+ 
+               yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
+ 
+               retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0);
+ 
+-              if (retVal == YAFFS_OK) {
++              if (retVal == YAFFS_OK)
+                       retVal = yaffs_DoGenericObjectDeletion(hl);
+-              }
++
+               return retVal;
+ 
+-      } else {
++      } else if (immediateDeletion) {
+               switch (obj->variantType) {
+               case YAFFS_OBJECT_TYPE_FILE:
+-                      return yaffs_UnlinkFile(obj);
++                      return yaffs_DeleteFile(obj);
+                       break;
+               case YAFFS_OBJECT_TYPE_DIRECTORY:
+                       return yaffs_DeleteDirectory(obj);
+@@ -5248,21 +5284,22 @@ static int yaffs_UnlinkWorker(yaffs_Obje
+               default:
+                       return YAFFS_FAIL;
+               }
+-      }
++      } else
++              return yaffs_ChangeObjectName(obj, obj->myDev->unlinkedDir,
++                                         _Y("unlinked"), 0, 0);
+ }
+ 
+ 
+-static int yaffs_UnlinkObject( yaffs_Object *obj)
++static int yaffs_UnlinkObject(yaffs_Object *obj)
+ {
+ 
+-      if (obj && obj->unlinkAllowed) {
++      if (obj && obj->unlinkAllowed)
+               return yaffs_UnlinkWorker(obj);
+-      }
+ 
+       return YAFFS_FAIL;
+ 
+ }
+-int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name)
++int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name)
+ {
+       yaffs_Object *obj;
+ 
+@@ -5272,8 +5309,8 @@ int yaffs_Unlink(yaffs_Object * dir, con
+ 
+ /*----------------------- Initialisation Scanning ---------------------- */
+ 
+-static void yaffs_HandleShadowedObject(yaffs_Device * dev, int objId,
+-                                     int backwardScanning)
++static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId,
++                              int backwardScanning)
+ {
+       yaffs_Object *obj;
+ 
+@@ -5286,9 +5323,8 @@ static void yaffs_HandleShadowedObject(y
+               /* Handle YAFFS2 case (backward scanning)
+                * If the shadowed object exists then ignore.
+                */
+-              if (yaffs_FindObjectByNumber(dev, objId)) {
++              if (yaffs_FindObjectByNumber(dev, objId))
+                       return;
+-              }
+       }
+ 
+       /* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc.
+@@ -5297,6 +5333,8 @@ static void yaffs_HandleShadowedObject(y
+       obj =
+           yaffs_FindOrCreateObjectByNumber(dev, objId,
+                                            YAFFS_OBJECT_TYPE_FILE);
++      if (!obj)
++              return;
+       yaffs_AddObjectToDirectory(dev->unlinkedDir, obj);
+       obj->variant.fileVariant.shrinkSize = 0;
+       obj->valid = 1;         /* So that we don't read any other info for this file */
+@@ -5325,44 +5363,77 @@ static void yaffs_HardlinkFixup(yaffs_De
+               if (in) {
+                       /* Add the hardlink pointers */
+                       hl->variant.hardLinkVariant.equivalentObject = in;
+-                      list_add(&hl->hardLinks, &in->hardLinks);
++                      ylist_add(&hl->hardLinks, &in->hardLinks);
+               } else {
+                       /* Todo Need to report/handle this better.
+                        * Got a problem... hardlink to a non-existant object
+                        */
+                       hl->variant.hardLinkVariant.equivalentObject = NULL;
+-                      INIT_LIST_HEAD(&hl->hardLinks);
++                      YINIT_LIST_HEAD(&hl->hardLinks);
+ 
+               }
+-
+       }
++}
++
++
+ 
++
++
++static int ybicmp(const void *a, const void *b)
++{
++      register int aseq = ((yaffs_BlockIndex *)a)->seq;
++      register int bseq = ((yaffs_BlockIndex *)b)->seq;
++      register int ablock = ((yaffs_BlockIndex *)a)->block;
++      register int bblock = ((yaffs_BlockIndex *)b)->block;
++      if (aseq == bseq)
++              return ablock - bblock;
++      else
++              return aseq - bseq;
+ }
+ 
+ 
++struct yaffs_ShadowFixerStruct {
++      int objectId;
++      int shadowedId;
++      struct yaffs_ShadowFixerStruct *next;
++};
++
+ 
++static void yaffs_StripDeletedObjects(yaffs_Device *dev)
++{
++      /*
++      *  Sort out state of unlinked and deleted objects after scanning.
++      */
++      struct ylist_head *i;
++      struct ylist_head *n;
++      yaffs_Object *l;
+ 
++      /* Soft delete all the unlinked files */
++      ylist_for_each_safe(i, n,
++              &dev->unlinkedDir->variant.directoryVariant.children) {
++              if (i) {
++                      l = ylist_entry(i, yaffs_Object, siblings);
++                      yaffs_DeleteObject(l);
++              }
++      }
+ 
+-static int ybicmp(const void *a, const void *b){
+-    register int aseq = ((yaffs_BlockIndex *)a)->seq;
+-    register int bseq = ((yaffs_BlockIndex *)b)->seq;
+-    register int ablock = ((yaffs_BlockIndex *)a)->block;
+-    register int bblock = ((yaffs_BlockIndex *)b)->block;
+-    if( aseq == bseq )
+-        return ablock - bblock;
+-    else
+-        return aseq - bseq;
++      ylist_for_each_safe(i, n,
++              &dev->deletedDir->variant.directoryVariant.children) {
++              if (i) {
++                      l = ylist_entry(i, yaffs_Object, siblings);
++                      yaffs_DeleteObject(l);
++              }
++      }
+ 
+ }
+ 
+-static int yaffs_Scan(yaffs_Device * dev)
++static int yaffs_Scan(yaffs_Device *dev)
+ {
+       yaffs_ExtendedTags tags;
+       int blk;
+       int blockIterator;
+       int startIterator;
+       int endIterator;
+-      int nBlocksToScan = 0;
+       int result;
+ 
+       int chunk;
+@@ -5371,26 +5442,19 @@ static int yaffs_Scan(yaffs_Device * dev
+       yaffs_BlockState state;
+       yaffs_Object *hardList = NULL;
+       yaffs_BlockInfo *bi;
+-      int sequenceNumber;
++      __u32 sequenceNumber;
+       yaffs_ObjectHeader *oh;
+       yaffs_Object *in;
+       yaffs_Object *parent;
+-      int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
+ 
+       int alloc_failed = 0;
+ 
++      struct yaffs_ShadowFixerStruct *shadowFixerList = NULL;
++
+ 
+       __u8 *chunkData;
+ 
+-      yaffs_BlockIndex *blockIndex = NULL;
+ 
+-      if (dev->isYaffs2) {
+-              T(YAFFS_TRACE_SCAN,
+-                (TSTR("yaffs_Scan is not for YAFFS2!" TENDSTR)));
+-              return YAFFS_FAIL;
+-      }
+-
+-      //TODO  Throw all the yaffs2 stuuf out of yaffs_Scan since it is only for yaffs1 format.
+ 
+       T(YAFFS_TRACE_SCAN,
+         (TSTR("yaffs_Scan starts  intstartblk %d intendblk %d..." TENDSTR),
+@@ -5400,12 +5464,6 @@ static int yaffs_Scan(yaffs_Device * dev
+ 
+       dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
+ 
+-      if (dev->isYaffs2) {
+-              blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
+-              if(!blockIndex)
+-                      return YAFFS_FAIL;
+-      }
+-
+       /* Scan all the blocks to determine their state */
+       for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) {
+               bi = yaffs_GetBlockInfo(dev, blk);
+@@ -5418,6 +5476,9 @@ static int yaffs_Scan(yaffs_Device * dev
+               bi->blockState = state;
+               bi->sequenceNumber = sequenceNumber;
+ 
++              if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK)
++                      bi->blockState = state = YAFFS_BLOCK_STATE_DEAD;
++
+               T(YAFFS_TRACE_SCAN_DEBUG,
+                 (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
+                  state, sequenceNumber));
+@@ -5430,70 +5491,21 @@ static int yaffs_Scan(yaffs_Device * dev
+                         (TSTR("Block empty " TENDSTR)));
+                       dev->nErasedBlocks++;
+                       dev->nFreeChunks += dev->nChunksPerBlock;
+-              } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
+-
+-                      /* Determine the highest sequence number */
+-                      if (dev->isYaffs2 &&
+-                          sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
+-                          sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
+-
+-                              blockIndex[nBlocksToScan].seq = sequenceNumber;
+-                              blockIndex[nBlocksToScan].block = blk;
+-
+-                              nBlocksToScan++;
+-
+-                              if (sequenceNumber >= dev->sequenceNumber) {
+-                                      dev->sequenceNumber = sequenceNumber;
+-                              }
+-                      } else if (dev->isYaffs2) {
+-                              /* TODO: Nasty sequence number! */
+-                              T(YAFFS_TRACE_SCAN,
+-                                (TSTR
+-                                 ("Block scanning block %d has bad sequence number %d"
+-                                  TENDSTR), blk, sequenceNumber));
+-
+-                      }
+               }
+       }
+ 
+-      /* Sort the blocks
+-       * Dungy old bubble sort for now...
+-       */
+-      if (dev->isYaffs2) {
+-              yaffs_BlockIndex temp;
+-              int i;
+-              int j;
+-
+-              for (i = 0; i < nBlocksToScan; i++)
+-                      for (j = i + 1; j < nBlocksToScan; j++)
+-                              if (blockIndex[i].seq > blockIndex[j].seq) {
+-                                      temp = blockIndex[j];
+-                                      blockIndex[j] = blockIndex[i];
+-                                      blockIndex[i] = temp;
+-                              }
+-      }
+-
+-      /* Now scan the blocks looking at the data. */
+-      if (dev->isYaffs2) {
+-              startIterator = 0;
+-              endIterator = nBlocksToScan - 1;
+-              T(YAFFS_TRACE_SCAN_DEBUG,
+-                (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan));
+-      } else {
+-              startIterator = dev->internalStartBlock;
+-              endIterator = dev->internalEndBlock;
+-      }
++      startIterator = dev->internalStartBlock;
++      endIterator = dev->internalEndBlock;
+ 
+       /* For each block.... */
+       for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator;
+            blockIterator++) {
+ 
+-              if (dev->isYaffs2) {
+-                      /* get the block to scan in the correct order */
+-                      blk = blockIndex[blockIterator].block;
+-              } else {
+-                      blk = blockIterator;
+-              }
++              YYIELD();
++
++              YYIELD();
++
++              blk = blockIterator;
+ 
+               bi = yaffs_GetBlockInfo(dev, blk);
+               state = bi->blockState;
+@@ -5511,7 +5523,7 @@ static int yaffs_Scan(yaffs_Device * dev
+ 
+                       /* Let's have a good look at this chunk... */
+ 
+-                      if (!dev->isYaffs2 && tags.chunkDeleted) {
++                      if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED || tags.chunkDeleted) {
+                               /* YAFFS1 only...
+                                * A deleted chunk
+                                */
+@@ -5540,18 +5552,6 @@ static int yaffs_Scan(yaffs_Device * dev
+                                       dev->allocationBlockFinder = blk;
+                                       /* Set it to here to encourage the allocator to go forth from here. */
+ 
+-                                      /* Yaffs2 sanity check:
+-                                       * This should be the one with the highest sequence number
+-                                       */
+-                                      if (dev->isYaffs2
+-                                          && (dev->sequenceNumber !=
+-                                              bi->sequenceNumber)) {
+-                                              T(YAFFS_TRACE_ALWAYS,
+-                                                (TSTR
+-                                                 ("yaffs: Allocation block %d was not highest sequence id:"
+-                                                  " block seq = %d, dev seq = %d"
+-                                                  TENDSTR), blk,bi->sequenceNumber,dev->sequenceNumber));
+-                                      }
+                               }
+ 
+                               dev->nFreeChunks += (dev->nChunksPerBlock - c);
+@@ -5570,11 +5570,11 @@ static int yaffs_Scan(yaffs_Device * dev
+                                * the same chunkId).
+                                */
+ 
+-                              if(!in)
++                              if (!in)
+                                       alloc_failed = 1;
+ 
+-                              if(in){
+-                                      if(!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk,1))
++                              if (in) {
++                                      if (!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, 1))
+                                               alloc_failed = 1;
+                               }
+ 
+@@ -5617,7 +5617,7 @@ static int yaffs_Scan(yaffs_Device * dev
+                                        * deleted, and worse still it has changed type. Delete the old object.
+                                        */
+ 
+-                                      yaffs_DestroyObject(in);
++                                      yaffs_DeleteObject(in);
+ 
+                                       in = 0;
+                               }
+@@ -5627,14 +5627,20 @@ static int yaffs_Scan(yaffs_Device * dev
+                                                                     objectId,
+                                                                     oh->type);
+ 
+-                              if(!in)
++                              if (!in)
+                                       alloc_failed = 1;
+ 
+                               if (in && oh->shadowsObject > 0) {
+-                                      yaffs_HandleShadowedObject(dev,
+-                                                                 oh->
+-                                                                 shadowsObject,
+-                                                                 0);
++
++                                      struct yaffs_ShadowFixerStruct *fixer;
++                                      fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct));
++                                      if (fixer) {
++                                              fixer->next = shadowFixerList;
++                                              shadowFixerList = fixer;
++                                              fixer->objectId = tags.objectId;
++                                              fixer->shadowedId = oh->shadowsObject;
++                                      }
++
+                               }
+ 
+                               if (in && in->valid) {
+@@ -5643,12 +5649,10 @@ static int yaffs_Scan(yaffs_Device * dev
+                                       unsigned existingSerial = in->serial;
+                                       unsigned newSerial = tags.serialNumber;
+ 
+-                                      if (dev->isYaffs2 ||
+-                                          ((existingSerial + 1) & 3) ==
+-                                          newSerial) {
++                                      if (((existingSerial + 1) & 3) == newSerial) {
+                                               /* Use new one - destroy the exisiting one */
+                                               yaffs_DeleteChunk(dev,
+-                                                                in->chunkId,
++                                                                in->hdrChunk,
+                                                                 1, __LINE__);
+                                               in->valid = 0;
+                                       } else {
+@@ -5681,7 +5685,8 @@ static int yaffs_Scan(yaffs_Device * dev
+                                       in->yst_ctime = oh->yst_ctime;
+                                       in->yst_rdev = oh->yst_rdev;
+ #endif
+-                                      in->chunkId = chunk;
++                                      in->hdrChunk = chunk;
++                                      in->serial = tags.serialNumber;
+ 
+                               } else if (in && !in->valid) {
+                                       /* we need to load this info */
+@@ -5705,7 +5710,8 @@ static int yaffs_Scan(yaffs_Device * dev
+                                       in->yst_ctime = oh->yst_ctime;
+                                       in->yst_rdev = oh->yst_rdev;
+ #endif
+-                                      in->chunkId = chunk;
++                                      in->hdrChunk = chunk;
++                                      in->serial = tags.serialNumber;
+ 
+                                       yaffs_SetObjectName(in, oh->name);
+                                       in->dirty = 0;
+@@ -5718,25 +5724,25 @@ static int yaffs_Scan(yaffs_Device * dev
+                                           yaffs_FindOrCreateObjectByNumber
+                                           (dev, oh->parentObjectId,
+                                            YAFFS_OBJECT_TYPE_DIRECTORY);
+-                                      if (parent->variantType ==
++                                      if (!parent)
++                                              alloc_failed = 1;
++                                      if (parent && parent->variantType ==
+                                           YAFFS_OBJECT_TYPE_UNKNOWN) {
+                                               /* Set up as a directory */
+                                               parent->variantType =
+-                                                  YAFFS_OBJECT_TYPE_DIRECTORY;
+-                                              INIT_LIST_HEAD(&parent->variant.
+-                                                             directoryVariant.
+-                                                             children);
+-                                      } else if (parent->variantType !=
+-                                                 YAFFS_OBJECT_TYPE_DIRECTORY)
+-                                      {
++                                                      YAFFS_OBJECT_TYPE_DIRECTORY;
++                                              YINIT_LIST_HEAD(&parent->variant.
++                                                              directoryVariant.
++                                                              children);
++                                      } else if (!parent || parent->variantType !=
++                                                 YAFFS_OBJECT_TYPE_DIRECTORY) {
+                                               /* Hoosterman, another problem....
+                                                * We're trying to use a non-directory as a directory
+                                                */
+ 
+                                               T(YAFFS_TRACE_ERROR,
+                                                 (TSTR
+-                                                 ("yaffs tragedy: attempting to use non-directory as"
+-                                                  " a directory in scan. Put in lost+found."
++                                                 ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
+                                                   TENDSTR)));
+                                               parent = dev->lostNFoundDir;
+                                       }
+@@ -5760,15 +5766,6 @@ static int yaffs_Scan(yaffs_Device * dev
+                                               /* Todo got a problem */
+                                               break;
+                                       case YAFFS_OBJECT_TYPE_FILE:
+-                                              if (dev->isYaffs2
+-                                                  && oh->isShrink) {
+-                                                      /* Prune back the shrunken chunks */
+-                                                      yaffs_PruneResizedChunks
+-                                                          (in, oh->fileSize);
+-                                                      /* Mark the block as having a shrinkHeader */
+-                                                      bi->hasShrinkHeader = 1;
+-                                              }
+-
+                                               if (dev->useHeaderFileSize)
+ 
+                                                       in->variant.fileVariant.
+@@ -5778,11 +5775,11 @@ static int yaffs_Scan(yaffs_Device * dev
+                                               break;
+                                       case YAFFS_OBJECT_TYPE_HARDLINK:
+                                               in->variant.hardLinkVariant.
+-                                                  equivalentObjectId =
+-                                                  oh->equivalentObjectId;
++                                                      equivalentObjectId =
++                                                      oh->equivalentObjectId;
+                                               in->hardLinks.next =
+-                                                  (struct list_head *)
+-                                                  hardList;
++                                                      (struct ylist_head *)
++                                                      hardList;
+                                               hardList = in;
+                                               break;
+                                       case YAFFS_OBJECT_TYPE_DIRECTORY:
+@@ -5794,15 +5791,17 @@ static int yaffs_Scan(yaffs_Device * dev
+                                       case YAFFS_OBJECT_TYPE_SYMLINK:
+                                               in->variant.symLinkVariant.alias =
+                                                   yaffs_CloneString(oh->alias);
+-                                              if(!in->variant.symLinkVariant.alias)
++                                              if (!in->variant.symLinkVariant.alias)
+                                                       alloc_failed = 1;
+                                               break;
+                                       }
+ 
++/*
+                                       if (parent == dev->deletedDir) {
+                                               yaffs_DestroyObject(in);
+                                               bi->hasShrinkHeader = 1;
+                                       }
++*/
+                               }
+                       }
+               }
+@@ -5823,10 +5822,6 @@ static int yaffs_Scan(yaffs_Device * dev
+ 
+       }
+ 
+-      if (blockIndex) {
+-              YFREE(blockIndex);
+-      }
+-
+ 
+       /* Ok, we've done all the scanning.
+        * Fix up the hard link chains.
+@@ -5834,32 +5829,36 @@ static int yaffs_Scan(yaffs_Device * dev
+        * hardlinks.
+        */
+ 
+-      yaffs_HardlinkFixup(dev,hardList);
++      yaffs_HardlinkFixup(dev, hardList);
+ 
+-      /* Handle the unlinked files. Since they were left in an unlinked state we should
+-       * just delete them.
+-       */
++      /* Fix up any shadowed objects */
+       {
+-              struct list_head *i;
+-              struct list_head *n;
++              struct yaffs_ShadowFixerStruct *fixer;
++              yaffs_Object *obj;
+ 
+-              yaffs_Object *l;
+-              /* Soft delete all the unlinked files */
+-              list_for_each_safe(i, n,
+-                                 &dev->unlinkedDir->variant.directoryVariant.
+-                                 children) {
+-                      if (i) {
+-                              l = list_entry(i, yaffs_Object, siblings);
+-                              yaffs_DestroyObject(l);
+-                      }
++              while (shadowFixerList) {
++                      fixer = shadowFixerList;
++                      shadowFixerList = fixer->next;
++                      /* Complete the rename transaction by deleting the shadowed object
++                       * then setting the object header to unshadowed.
++                       */
++                      obj = yaffs_FindObjectByNumber(dev, fixer->shadowedId);
++                      if (obj)
++                              yaffs_DeleteObject(obj);
++
++                      obj = yaffs_FindObjectByNumber(dev, fixer->objectId);
++
++                      if (obj)
++                              yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0);
++
++                      YFREE(fixer);
+               }
+       }
+ 
+       yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
+ 
+-      if(alloc_failed){
++      if (alloc_failed)
+               return YAFFS_FAIL;
+-      }
+ 
+       T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR)));
+ 
+@@ -5871,25 +5870,27 @@ static void yaffs_CheckObjectDetailsLoad
+ {
+       __u8 *chunkData;
+       yaffs_ObjectHeader *oh;
+-      yaffs_Device *dev = in->myDev;
++      yaffs_Device *dev;
+       yaffs_ExtendedTags tags;
+       int result;
+       int alloc_failed = 0;
+ 
+-      if(!in)
++      if (!in)
+               return;
+ 
++      dev = in->myDev;
++
+ #if 0
+-      T(YAFFS_TRACE_SCAN,(TSTR("details for object %d %s loaded" TENDSTR),
++      T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR),
+               in->objectId,
+               in->lazyLoaded ? "not yet" : "already"));
+ #endif
+ 
+-      if(in->lazyLoaded){
++      if (in->lazyLoaded && in->hdrChunk > 0) {
+               in->lazyLoaded = 0;
+               chunkData = yaffs_GetTempBuffer(dev, __LINE__);
+ 
+-              result = yaffs_ReadChunkWithTagsFromNAND(dev,in->chunkId,chunkData,&tags);
++              result = yaffs_ReadChunkWithTagsFromNAND(dev, in->hdrChunk, chunkData, &tags);
+               oh = (yaffs_ObjectHeader *) chunkData;
+ 
+               in->yst_mode = oh->yst_mode;
+@@ -5911,18 +5912,18 @@ static void yaffs_CheckObjectDetailsLoad
+ #endif
+               yaffs_SetObjectName(in, oh->name);
+ 
+-              if(in->variantType == YAFFS_OBJECT_TYPE_SYMLINK){
+-                       in->variant.symLinkVariant.alias =
++              if (in->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
++                      in->variant.symLinkVariant.alias =
+                                                   yaffs_CloneString(oh->alias);
+-                      if(!in->variant.symLinkVariant.alias)
++                      if (!in->variant.symLinkVariant.alias)
+                               alloc_failed = 1; /* Not returned to caller */
+               }
+ 
+-              yaffs_ReleaseTempBuffer(dev,chunkData, __LINE__);
++              yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
+       }
+ }
+ 
+-static int yaffs_ScanBackwards(yaffs_Device * dev)
++static int yaffs_ScanBackwards(yaffs_Device *dev)
+ {
+       yaffs_ExtendedTags tags;
+       int blk;
+@@ -5938,7 +5939,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+       yaffs_BlockState state;
+       yaffs_Object *hardList = NULL;
+       yaffs_BlockInfo *bi;
+-      int sequenceNumber;
++      __u32 sequenceNumber;
+       yaffs_ObjectHeader *oh;
+       yaffs_Object *in;
+       yaffs_Object *parent;
+@@ -5972,12 +5973,12 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ 
+       blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
+ 
+-      if(!blockIndex) {
++      if (!blockIndex) {
+               blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex));
+               altBlockIndex = 1;
+       }
+ 
+-      if(!blockIndex) {
++      if (!blockIndex) {
+               T(YAFFS_TRACE_SCAN,
+                 (TSTR("yaffs_Scan() could not allocate block index!" TENDSTR)));
+               return YAFFS_FAIL;
+@@ -5999,15 +6000,17 @@ static int yaffs_ScanBackwards(yaffs_Dev
+               bi->blockState = state;
+               bi->sequenceNumber = sequenceNumber;
+ 
+-              if(bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA)
++              if (bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA)
+                       bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT;
++              if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK)
++                      bi->blockState = state = YAFFS_BLOCK_STATE_DEAD;
+ 
+               T(YAFFS_TRACE_SCAN_DEBUG,
+                 (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
+                  state, sequenceNumber));
+ 
+ 
+-              if(state == YAFFS_BLOCK_STATE_CHECKPOINT){
++              if (state == YAFFS_BLOCK_STATE_CHECKPOINT) {
+                       dev->blocksInCheckpoint++;
+ 
+               } else if (state == YAFFS_BLOCK_STATE_DEAD) {
+@@ -6021,8 +6024,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+               } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
+ 
+                       /* Determine the highest sequence number */
+-                      if (dev->isYaffs2 &&
+-                          sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
++                      if (sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
+                           sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
+ 
+                               blockIndex[nBlocksToScan].seq = sequenceNumber;
+@@ -6030,10 +6032,9 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ 
+                               nBlocksToScan++;
+ 
+-                              if (sequenceNumber >= dev->sequenceNumber) {
++                              if (sequenceNumber >= dev->sequenceNumber)
+                                       dev->sequenceNumber = sequenceNumber;
+-                              }
+-                      } else if (dev->isYaffs2) {
++                      } else {
+                               /* TODO: Nasty sequence number! */
+                               T(YAFFS_TRACE_SCAN,
+                                 (TSTR
+@@ -6053,11 +6054,13 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ 
+       /* Sort the blocks */
+ #ifndef CONFIG_YAFFS_USE_OWN_SORT
+-      yaffs_qsort(blockIndex, nBlocksToScan,
+-              sizeof(yaffs_BlockIndex), ybicmp);
++      {
++              /* Use qsort now. */
++              yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), ybicmp);
++      }
+ #else
+       {
+-              /* Dungy old bubble sort... */
++              /* Dungy old bubble sort... */
+ 
+               yaffs_BlockIndex temp;
+               int i;
+@@ -6075,7 +6078,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ 
+       YYIELD();
+ 
+-      T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR)));
++      T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR)));
+ 
+       /* Now scan the blocks looking at the data. */
+       startIterator = 0;
+@@ -6085,10 +6088,10 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ 
+       /* For each block.... backwards */
+       for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator;
+-           blockIterator--) {
+-              /* Cooperative multitasking! This loop can run for so
++                      blockIterator--) {
++              /* Cooperative multitasking! This loop can run for so
+                  long that watchdog timers expire. */
+-              YYIELD();
++              YYIELD();
+ 
+               /* get the block to scan in the correct order */
+               blk = blockIndex[blockIterator].block;
+@@ -6127,10 +6130,8 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                * this is the one being allocated from
+                                */
+ 
+-                              if(foundChunksInBlock)
+-                              {
++                              if (foundChunksInBlock) {
+                                       /* This is a chunk that was skipped due to failing the erased check */
+-
+                               } else if (c == 0) {
+                                       /* We're looking at the first chunk in the block so the block is unused */
+                                       state = YAFFS_BLOCK_STATE_EMPTY;
+@@ -6138,7 +6139,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                               } else {
+                                       if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
+                                           state == YAFFS_BLOCK_STATE_ALLOCATING) {
+-                                              if(dev->sequenceNumber == bi->sequenceNumber) {
++                                              if (dev->sequenceNumber == bi->sequenceNumber) {
+                                                       /* this is the block being allocated from */
+ 
+                                                       T(YAFFS_TRACE_SCAN,
+@@ -6150,27 +6151,31 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                                       dev->allocationBlock = blk;
+                                                       dev->allocationPage = c;
+                                                       dev->allocationBlockFinder = blk;
+-                                              }
+-                                              else {
++                                              } else {
+                                                       /* This is a partially written block that is not
+                                                        * the current allocation block. This block must have
+                                                        * had a write failure, so set up for retirement.
+                                                        */
+ 
+-                                                       bi->needsRetiring = 1;
++                                                       /* bi->needsRetiring = 1; ??? TODO */
+                                                        bi->gcPrioritise = 1;
+ 
+                                                        T(YAFFS_TRACE_ALWAYS,
+-                                                       (TSTR("Partially written block %d being set for retirement" TENDSTR),
++                                                       (TSTR("Partially written block %d detected" TENDSTR),
+                                                        blk));
+                                               }
+-
+                                       }
+-
+                               }
+ 
+                               dev->nFreeChunks++;
+ 
++                      } else if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED) {
++                              T(YAFFS_TRACE_SCAN,
++                                (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR),
++                                blk, c));
++
++                                dev->nFreeChunks++;
++
+                       } else if (tags.chunkId > 0) {
+                               /* chunkId > 0 so it is a data chunk... */
+                               unsigned int endpos;
+@@ -6187,7 +6192,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                                                     tags.
+                                                                     objectId,
+                                                                     YAFFS_OBJECT_TYPE_FILE);
+-                              if(!in){
++                              if (!in) {
+                                       /* Out of memory */
+                                       alloc_failed = 1;
+                               }
+@@ -6197,8 +6202,8 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                   && chunkBase <
+                                   in->variant.fileVariant.shrinkSize) {
+                                       /* This has not been invalidated by a resize */
+-                                      if(!yaffs_PutChunkIntoFile(in, tags.chunkId,
+-                                                             chunk, -1)){
++                                      if (!yaffs_PutChunkIntoFile(in, tags.chunkId,
++                                                             chunk, -1)) {
+                                               alloc_failed = 1;
+                                       }
+ 
+@@ -6221,7 +6226,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                                   scannedFileSize;
+                                       }
+ 
+-                              } else if(in) {
++                              } else if (in) {
+                                       /* This chunk has been invalidated by a resize, so delete */
+                                       yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
+ 
+@@ -6242,6 +6247,8 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                       in = yaffs_FindOrCreateObjectByNumber
+                                           (dev, tags.objectId,
+                                            tags.extraObjectType);
++                                      if (!in)
++                                              alloc_failed = 1;
+                               }
+ 
+                               if (!in ||
+@@ -6251,8 +6258,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                   tags.extraShadows ||
+                                   (!in->valid &&
+                                   (tags.objectId == YAFFS_OBJECTID_ROOT ||
+-                                   tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))
+-                                  ) {
++                                   tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))) {
+ 
+                                       /* If we don't have  valid info then we need to read the chunk
+                                        * TODO In future we can probably defer reading the chunk and
+@@ -6266,8 +6272,17 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ 
+                                       oh = (yaffs_ObjectHeader *) chunkData;
+ 
+-                                      if (!in)
++                                      if (dev->inbandTags) {
++                                              /* Fix up the header if they got corrupted by inband tags */
++                                              oh->shadowsObject = oh->inbandShadowsObject;
++                                              oh->isShrink = oh->inbandIsShrink;
++                                      }
++
++                                      if (!in) {
+                                               in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type);
++                                              if (!in)
++                                                      alloc_failed = 1;
++                                      }
+ 
+                               }
+ 
+@@ -6275,10 +6290,9 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                       /* TODO Hoosterman we have a problem! */
+                                       T(YAFFS_TRACE_ERROR,
+                                         (TSTR
+-                                         ("yaffs tragedy: Could not make object for object  %d  "
+-                                          "at chunk %d during scan"
++                                         ("yaffs tragedy: Could not make object for object  %d at chunk %d during scan"
+                                           TENDSTR), tags.objectId, chunk));
+-
++                                      continue;
+                               }
+ 
+                               if (in->valid) {
+@@ -6289,10 +6303,9 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ 
+                                       if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) &&
+                                            ((oh &&
+-                                             oh-> type == YAFFS_OBJECT_TYPE_FILE)||
++                                             oh->type == YAFFS_OBJECT_TYPE_FILE) ||
+                                             (tags.extraHeaderInfoAvailable  &&
+-                                             tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))
+-                                          ) {
++                                             tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))) {
+                                               __u32 thisSize =
+                                                   (oh) ? oh->fileSize : tags.
+                                                   extraFileLength;
+@@ -6300,7 +6313,9 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                                   (oh) ? oh->
+                                                   parentObjectId : tags.
+                                                   extraParentObjectId;
+-                                              unsigned isShrink =
++
++
++                                              isShrink =
+                                                   (oh) ? oh->isShrink : tags.
+                                                   extraIsShrinkHeader;
+ 
+@@ -6323,9 +6338,8 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                                           thisSize;
+                                               }
+ 
+-                                              if (isShrink) {
++                                              if (isShrink)
+                                                       bi->hasShrinkHeader = 1;
+-                                              }
+ 
+                                       }
+                                       /* Use existing - destroy this one. */
+@@ -6333,6 +6347,17 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ 
+                               }
+ 
++                              if (!in->valid && in->variantType !=
++                                  (oh ? oh->type : tags.extraObjectType))
++                                      T(YAFFS_TRACE_ERROR, (
++                                              TSTR("yaffs tragedy: Bad object type, "
++                                          TCONT("%d != %d, for object %d at chunk ")
++                                          TCONT("%d during scan")
++                                              TENDSTR), oh ?
++                                          oh->type : tags.extraObjectType,
++                                          in->variantType, tags.objectId,
++                                          chunk));
++
+                               if (!in->valid &&
+                                   (tags.objectId == YAFFS_OBJECTID_ROOT ||
+                                    tags.objectId ==
+@@ -6340,7 +6365,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                       /* We only load some info, don't fiddle with directory structure */
+                                       in->valid = 1;
+ 
+-                                      if(oh) {
++                                      if (oh) {
+                                               in->variantType = oh->type;
+ 
+                                               in->yst_mode = oh->yst_mode;
+@@ -6365,15 +6390,15 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                               in->lazyLoaded = 1;
+                                       }
+ 
+-                                      in->chunkId = chunk;
++                                      in->hdrChunk = chunk;
+ 
+                               } else if (!in->valid) {
+                                       /* we need to load this info */
+ 
+                                       in->valid = 1;
+-                                      in->chunkId = chunk;
++                                      in->hdrChunk = chunk;
+ 
+-                                      if(oh) {
++                                      if (oh) {
+                                               in->variantType = oh->type;
+ 
+                                               in->yst_mode = oh->yst_mode;
+@@ -6403,20 +6428,19 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                               yaffs_SetObjectName(in, oh->name);
+                                               parent =
+                                                   yaffs_FindOrCreateObjectByNumber
+-                                                      (dev, oh->parentObjectId,
+-                                                       YAFFS_OBJECT_TYPE_DIRECTORY);
++                                                      (dev, oh->parentObjectId,
++                                                       YAFFS_OBJECT_TYPE_DIRECTORY);
+ 
+                                                fileSize = oh->fileSize;
+-                                               isShrink = oh->isShrink;
++                                               isShrink = oh->isShrink;
+                                                equivalentObjectId = oh->equivalentObjectId;
+ 
+-                                      }
+-                                      else {
++                                      } else {
+                                               in->variantType = tags.extraObjectType;
+                                               parent =
+                                                   yaffs_FindOrCreateObjectByNumber
+-                                                      (dev, tags.extraParentObjectId,
+-                                                       YAFFS_OBJECT_TYPE_DIRECTORY);
++                                                      (dev, tags.extraParentObjectId,
++                                                       YAFFS_OBJECT_TYPE_DIRECTORY);
+                                                fileSize = tags.extraFileLength;
+                                                isShrink = tags.extraIsShrinkHeader;
+                                                equivalentObjectId = tags.extraEquivalentObjectId;
+@@ -6425,29 +6449,30 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                       }
+                                       in->dirty = 0;
+ 
++                                      if (!parent)
++                                              alloc_failed = 1;
++
+                                       /* directory stuff...
+                                        * hook up to parent
+                                        */
+ 
+-                                      if (parent->variantType ==
++                                      if (parent && parent->variantType ==
+                                           YAFFS_OBJECT_TYPE_UNKNOWN) {
+                                               /* Set up as a directory */
+                                               parent->variantType =
+-                                                  YAFFS_OBJECT_TYPE_DIRECTORY;
+-                                              INIT_LIST_HEAD(&parent->variant.
+-                                                             directoryVariant.
+-                                                             children);
+-                                      } else if (parent->variantType !=
+-                                                 YAFFS_OBJECT_TYPE_DIRECTORY)
+-                                      {
++                                                      YAFFS_OBJECT_TYPE_DIRECTORY;
++                                              YINIT_LIST_HEAD(&parent->variant.
++                                                      directoryVariant.
++                                                      children);
++                                      } else if (!parent || parent->variantType !=
++                                                 YAFFS_OBJECT_TYPE_DIRECTORY) {
+                                               /* Hoosterman, another problem....
+                                                * We're trying to use a non-directory as a directory
+                                                */
+ 
+                                               T(YAFFS_TRACE_ERROR,
+                                                 (TSTR
+-                                                 ("yaffs tragedy: attempting to use non-directory as"
+-                                                  " a directory in scan. Put in lost+found."
++                                                 ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
+                                                   TENDSTR)));
+                                               parent = dev->lostNFoundDir;
+                                       }
+@@ -6494,12 +6519,12 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ 
+                                               break;
+                                       case YAFFS_OBJECT_TYPE_HARDLINK:
+-                                              if(!itsUnlinked) {
+-                                                in->variant.hardLinkVariant.equivalentObjectId =
+-                                                  equivalentObjectId;
+-                                                in->hardLinks.next =
+-                                                  (struct list_head *) hardList;
+-                                                hardList = in;
++                                              if (!itsUnlinked) {
++                                                      in->variant.hardLinkVariant.equivalentObjectId =
++                                                              equivalentObjectId;
++                                                      in->hardLinks.next =
++                                                              (struct ylist_head *) hardList;
++                                                      hardList = in;
+                                               }
+                                               break;
+                                       case YAFFS_OBJECT_TYPE_DIRECTORY:
+@@ -6509,12 +6534,11 @@ static int yaffs_ScanBackwards(yaffs_Dev
+                                               /* Do nothing */
+                                               break;
+                                       case YAFFS_OBJECT_TYPE_SYMLINK:
+-                                              if(oh){
+-                                                 in->variant.symLinkVariant.alias =
+-                                                  yaffs_CloneString(oh->
+-                                                                    alias);
+-                                                 if(!in->variant.symLinkVariant.alias)
+-                                                      alloc_failed = 1;
++                                              if (oh) {
++                                                      in->variant.symLinkVariant.alias =
++                                                              yaffs_CloneString(oh->alias);
++                                                      if (!in->variant.symLinkVariant.alias)
++                                                              alloc_failed = 1;
+                                               }
+                                               break;
+                                       }
+@@ -6551,75 +6575,129 @@ static int yaffs_ScanBackwards(yaffs_Dev
+        * We should now have scanned all the objects, now it's time to add these
+        * hardlinks.
+        */
+-      yaffs_HardlinkFixup(dev,hardList);
++      yaffs_HardlinkFixup(dev, hardList);
+ 
+ 
+-      /*
+-      *  Sort out state of unlinked and deleted objects.
+-      */
+-      {
+-              struct list_head *i;
+-              struct list_head *n;
++      yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
+ 
+-              yaffs_Object *l;
++      if (alloc_failed)
++              return YAFFS_FAIL;
+ 
+-              /* Soft delete all the unlinked files */
+-              list_for_each_safe(i, n,
+-                                 &dev->unlinkedDir->variant.directoryVariant.
+-                                 children) {
+-                      if (i) {
+-                              l = list_entry(i, yaffs_Object, siblings);
+-                              yaffs_DestroyObject(l);
+-                      }
+-              }
++      T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR)));
+ 
+-              /* Soft delete all the deletedDir files */
+-              list_for_each_safe(i, n,
+-                                 &dev->deletedDir->variant.directoryVariant.
+-                                 children) {
+-                      if (i) {
+-                              l = list_entry(i, yaffs_Object, siblings);
+-                              yaffs_DestroyObject(l);
++      return YAFFS_OK;
++}
+ 
+-                      }
++/*------------------------------  Directory Functions ----------------------------- */
++
++static void yaffs_VerifyObjectInDirectory(yaffs_Object *obj)
++{
++      struct ylist_head *lh;
++      yaffs_Object *listObj;
++
++      int count = 0;
++
++      if (!obj) {
++              T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR)));
++              YBUG();
++              return;
++      }
++
++      if (yaffs_SkipVerification(obj->myDev))
++              return;
++
++      if (!obj->parent) {
++              T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR)));
++              YBUG();
++              return;
++      }
++
++      if (obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
++              T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR)));
++              YBUG();
++      }
++
++      /* Iterate through the objects in each hash entry */
++
++      ylist_for_each(lh, &obj->parent->variant.directoryVariant.children) {
++              if (lh) {
++                      listObj = ylist_entry(lh, yaffs_Object, siblings);
++                      yaffs_VerifyObject(listObj);
++                      if (obj == listObj)
++                              count++;
+               }
++       }
++
++      if (count != 1) {
++              T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count));
++              YBUG();
+       }
++}
+ 
+-      yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
++static void yaffs_VerifyDirectory(yaffs_Object *directory)
++{
++      struct ylist_head *lh;
++      yaffs_Object *listObj;
+ 
+-      if(alloc_failed){
+-              return YAFFS_FAIL;
++      if (!directory) {
++              YBUG();
++              return;
+       }
+ 
+-      T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR)));
++      if (yaffs_SkipFullVerification(directory->myDev))
++              return;
+ 
+-      return YAFFS_OK;
++      if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
++              T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variantType));
++              YBUG();
++      }
++
++      /* Iterate through the objects in each hash entry */
++
++      ylist_for_each(lh, &directory->variant.directoryVariant.children) {
++              if (lh) {
++                      listObj = ylist_entry(lh, yaffs_Object, siblings);
++                      if (listObj->parent != directory) {
++                              T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent));
++                              YBUG();
++                      }
++                      yaffs_VerifyObjectInDirectory(listObj);
++              }
++      }
+ }
+ 
+-/*------------------------------  Directory Functions ----------------------------- */
+ 
+-static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj)
++static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj)
+ {
+       yaffs_Device *dev = obj->myDev;
++      yaffs_Object *parent;
++
++      yaffs_VerifyObjectInDirectory(obj);
++      parent = obj->parent;
++
++      yaffs_VerifyDirectory(parent);
+ 
+-      if(dev && dev->removeObjectCallback)
++      if (dev && dev->removeObjectCallback)
+               dev->removeObjectCallback(obj);
+ 
+-      list_del_init(&obj->siblings);
++
++      ylist_del_init(&obj->siblings);
+       obj->parent = NULL;
++
++      yaffs_VerifyDirectory(parent);
+ }
+ 
+ 
+-static void yaffs_AddObjectToDirectory(yaffs_Object * directory,
+-                                     yaffs_Object * obj)
++static void yaffs_AddObjectToDirectory(yaffs_Object *directory,
++                                      yaffs_Object *obj)
+ {
+-
+       if (!directory) {
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR
+                  ("tragedy: Trying to add an object to a null pointer directory"
+                   TENDSTR)));
+               YBUG();
++              return;
+       }
+       if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+               T(YAFFS_TRACE_ALWAYS,
+@@ -6631,37 +6709,42 @@ static void yaffs_AddObjectToDirectory(y
+ 
+       if (obj->siblings.prev == NULL) {
+               /* Not initialised */
+-              INIT_LIST_HEAD(&obj->siblings);
+-
+-      } else if (!list_empty(&obj->siblings)) {
+-              /* If it is holed up somewhere else, un hook it */
+-              yaffs_RemoveObjectFromDirectory(obj);
++              YBUG();
+       }
++
++
++      yaffs_VerifyDirectory(directory);
++
++      yaffs_RemoveObjectFromDirectory(obj);
++
++
+       /* Now add it */
+-      list_add(&obj->siblings, &directory->variant.directoryVariant.children);
++      ylist_add(&obj->siblings, &directory->variant.directoryVariant.children);
+       obj->parent = directory;
+ 
+       if (directory == obj->myDev->unlinkedDir
+-          || directory == obj->myDev->deletedDir) {
++                      || directory == obj->myDev->deletedDir) {
+               obj->unlinked = 1;
+               obj->myDev->nUnlinkedFiles++;
+               obj->renameAllowed = 0;
+       }
++
++      yaffs_VerifyDirectory(directory);
++      yaffs_VerifyObjectInDirectory(obj);
+ }
+ 
+-yaffs_Object *yaffs_FindObjectByName(yaffs_Object * directory,
+-                                   const YCHAR * name)
++yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory,
++                                   const YCHAR *name)
+ {
+       int sum;
+ 
+-      struct list_head *i;
++      struct ylist_head *i;
+       YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1];
+ 
+       yaffs_Object *l;
+ 
+-      if (!name) {
++      if (!name)
+               return NULL;
+-      }
+ 
+       if (!directory) {
+               T(YAFFS_TRACE_ALWAYS,
+@@ -6669,6 +6752,7 @@ yaffs_Object *yaffs_FindObjectByName(yaf
+                  ("tragedy: yaffs_FindObjectByName: null pointer directory"
+                   TENDSTR)));
+               YBUG();
++              return NULL;
+       }
+       if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+               T(YAFFS_TRACE_ALWAYS,
+@@ -6679,28 +6763,27 @@ yaffs_Object *yaffs_FindObjectByName(yaf
+ 
+       sum = yaffs_CalcNameSum(name);
+ 
+-      list_for_each(i, &directory->variant.directoryVariant.children) {
++      ylist_for_each(i, &directory->variant.directoryVariant.children) {
+               if (i) {
+-                      l = list_entry(i, yaffs_Object, siblings);
++                      l = ylist_entry(i, yaffs_Object, siblings);
++
++                      if (l->parent != directory)
++                              YBUG();
+ 
+                       yaffs_CheckObjectDetailsLoaded(l);
+ 
+                       /* Special case for lost-n-found */
+                       if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
+-                              if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) {
++                              if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0)
+                                       return l;
+-                              }
+-                      } else if (yaffs_SumCompare(l->sum, sum) || l->chunkId <= 0)
+-                      {
+-                              /* LostnFound cunk called Objxxx
++                      } else if (yaffs_SumCompare(l->sum, sum) || l->hdrChunk <= 0) {
++                              /* LostnFound chunk called Objxxx
+                                * Do a real check
+                                */
+                               yaffs_GetObjectName(l, buffer,
+                                                   YAFFS_MAX_NAME_LENGTH);
+-                              if (yaffs_strncmp(name, buffer,YAFFS_MAX_NAME_LENGTH) == 0) {
++                              if (yaffs_strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH) == 0)
+                                       return l;
+-                              }
+-
+                       }
+               }
+       }
+@@ -6710,10 +6793,10 @@ yaffs_Object *yaffs_FindObjectByName(yaf
+ 
+ 
+ #if 0
+-int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir,
+-                                 int (*fn) (yaffs_Object *))
++int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir,
++                                      int (*fn) (yaffs_Object *))
+ {
+-      struct list_head *i;
++      struct ylist_head *i;
+       yaffs_Object *l;
+ 
+       if (!theDir) {
+@@ -6722,20 +6805,21 @@ int yaffs_ApplyToDirectoryChildren(yaffs
+                  ("tragedy: yaffs_FindObjectByName: null pointer directory"
+                   TENDSTR)));
+               YBUG();
++              return YAFFS_FAIL;
+       }
+       if (theDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR
+                  ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR)));
+               YBUG();
++              return YAFFS_FAIL;
+       }
+ 
+-      list_for_each(i, &theDir->variant.directoryVariant.children) {
++      ylist_for_each(i, &theDir->variant.directoryVariant.children) {
+               if (i) {
+-                      l = list_entry(i, yaffs_Object, siblings);
+-                      if (l && !fn(l)) {
++                      l = ylist_entry(i, yaffs_Object, siblings);
++                      if (l && !fn(l))
+                               return YAFFS_FAIL;
+-                      }
+               }
+       }
+ 
+@@ -6748,7 +6832,7 @@ int yaffs_ApplyToDirectoryChildren(yaffs
+  * actual object.
+  */
+ 
+-yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object * obj)
++yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj)
+ {
+       if (obj && obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
+               /* We want the object id of the equivalent object, not this one */
+@@ -6756,10 +6840,9 @@ yaffs_Object *yaffs_GetEquivalentObject(
+               yaffs_CheckObjectDetailsLoaded(obj);
+       }
+       return obj;
+-
+ }
+ 
+-int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize)
++int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize)
+ {
+       memset(name, 0, buffSize * sizeof(YCHAR));
+ 
+@@ -6767,18 +6850,26 @@ int yaffs_GetObjectName(yaffs_Object * o
+ 
+       if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
+               yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1);
+-      } else if (obj->chunkId <= 0) {
++      } else if (obj->hdrChunk <= 0) {
+               YCHAR locName[20];
++              YCHAR numString[20];
++              YCHAR *x = &numString[19];
++              unsigned v = obj->objectId;
++              numString[19] = 0;
++              while (v > 0) {
++                      x--;
++                      *x = '0' + (v % 10);
++                      v /= 10;
++              }
+               /* make up a name */
+-              yaffs_sprintf(locName, _Y("%s%d"), YAFFS_LOSTNFOUND_PREFIX,
+-                            obj->objectId);
++              yaffs_strcpy(locName, YAFFS_LOSTNFOUND_PREFIX);
++              yaffs_strcat(locName, x);
+               yaffs_strncpy(name, locName, buffSize - 1);
+ 
+       }
+ #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
+-      else if (obj->shortName[0]) {
++      else if (obj->shortName[0])
+               yaffs_strcpy(name, obj->shortName);
+-      }
+ #endif
+       else {
+               int result;
+@@ -6788,9 +6879,9 @@ int yaffs_GetObjectName(yaffs_Object * o
+ 
+               memset(buffer, 0, obj->myDev->nDataBytesPerChunk);
+ 
+-              if (obj->chunkId >= 0) {
++              if (obj->hdrChunk > 0) {
+                       result = yaffs_ReadChunkWithTagsFromNAND(obj->myDev,
+-                                                      obj->chunkId, buffer,
++                                                      obj->hdrChunk, buffer,
+                                                       NULL);
+               }
+               yaffs_strncpy(name, oh->name, buffSize - 1);
+@@ -6801,46 +6892,43 @@ int yaffs_GetObjectName(yaffs_Object * o
+       return yaffs_strlen(name);
+ }
+ 
+-int yaffs_GetObjectFileLength(yaffs_Object * obj)
++int yaffs_GetObjectFileLength(yaffs_Object *obj)
+ {
+-
+       /* Dereference any hard linking */
+       obj = yaffs_GetEquivalentObject(obj);
+ 
+-      if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
++      if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+               return obj->variant.fileVariant.fileSize;
+-      }
+-      if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
++      if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
+               return yaffs_strlen(obj->variant.symLinkVariant.alias);
+-      } else {
++      else {
+               /* Only a directory should drop through to here */
+               return obj->myDev->nDataBytesPerChunk;
+       }
+ }
+ 
+-int yaffs_GetObjectLinkCount(yaffs_Object * obj)
++int yaffs_GetObjectLinkCount(yaffs_Object *obj)
+ {
+       int count = 0;
+-      struct list_head *i;
++      struct ylist_head *i;
+ 
+-      if (!obj->unlinked) {
+-              count++;        /* the object itself */
+-      }
+-      list_for_each(i, &obj->hardLinks) {
+-              count++;        /* add the hard links; */
+-      }
+-      return count;
++      if (!obj->unlinked)
++              count++;                /* the object itself */
++
++      ylist_for_each(i, &obj->hardLinks)
++              count++;                /* add the hard links; */
+ 
++      return count;
+ }
+ 
+-int yaffs_GetObjectInode(yaffs_Object * obj)
++int yaffs_GetObjectInode(yaffs_Object *obj)
+ {
+       obj = yaffs_GetEquivalentObject(obj);
+ 
+       return obj->objectId;
+ }
+ 
+-unsigned yaffs_GetObjectType(yaffs_Object * obj)
++unsigned yaffs_GetObjectType(yaffs_Object *obj)
+ {
+       obj = yaffs_GetEquivalentObject(obj);
+ 
+@@ -6872,19 +6960,18 @@ unsigned yaffs_GetObjectType(yaffs_Objec
+       }
+ }
+ 
+-YCHAR *yaffs_GetSymlinkAlias(yaffs_Object * obj)
++YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj)
+ {
+       obj = yaffs_GetEquivalentObject(obj);
+-      if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
++      if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
+               return yaffs_CloneString(obj->variant.symLinkVariant.alias);
+-      } else {
++      else
+               return yaffs_CloneString(_Y(""));
+-      }
+ }
+ 
+ #ifndef CONFIG_YAFFS_WINCE
+ 
+-int yaffs_SetAttributes(yaffs_Object * obj, struct iattr *attr)
++int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr)
+ {
+       unsigned int valid = attr->ia_valid;
+ 
+@@ -6910,7 +6997,7 @@ int yaffs_SetAttributes(yaffs_Object * o
+       return YAFFS_OK;
+ 
+ }
+-int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr)
++int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr)
+ {
+       unsigned int valid = 0;
+ 
+@@ -6934,13 +7021,12 @@ int yaffs_GetAttributes(yaffs_Object * o
+       attr->ia_valid = valid;
+ 
+       return YAFFS_OK;
+-
+ }
+ 
+ #endif
+ 
+ #if 0
+-int yaffs_DumpObject(yaffs_Object * obj)
++int yaffs_DumpObject(yaffs_Object *obj)
+ {
+       YCHAR name[257];
+ 
+@@ -6951,7 +7037,7 @@ int yaffs_DumpObject(yaffs_Object * obj)
+          ("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d"
+           " chunk %d type %d size %d\n"
+           TENDSTR), obj->objectId, yaffs_GetObjectInode(obj), name,
+-         obj->dirty, obj->valid, obj->serial, obj->sum, obj->chunkId,
++         obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdrChunk,
+          yaffs_GetObjectType(obj), yaffs_GetObjectFileLength(obj)));
+ 
+       return YAFFS_OK;
+@@ -6960,7 +7046,7 @@ int yaffs_DumpObject(yaffs_Object * obj)
+ 
+ /*---------------------------- Initialisation code -------------------------------------- */
+ 
+-static int yaffs_CheckDevFunctions(const yaffs_Device * dev)
++static int yaffs_CheckDevFunctions(const yaffs_Device *dev)
+ {
+ 
+       /* Common functions, gotta have */
+@@ -7011,7 +7097,7 @@ static int yaffs_CreateInitialDirectorie
+           yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND,
+                                     YAFFS_LOSTNFOUND_MODE | S_IFDIR);
+ 
+-      if(dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir){
++      if (dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir) {
+               yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir);
+               return YAFFS_OK;
+       }
+@@ -7019,7 +7105,7 @@ static int yaffs_CreateInitialDirectorie
+       return YAFFS_FAIL;
+ }
+ 
+-int yaffs_GutsInitialise(yaffs_Device * dev)
++int yaffs_GutsInitialise(yaffs_Device *dev)
+ {
+       int init_failed = 0;
+       unsigned x;
+@@ -7040,6 +7126,8 @@ int yaffs_GutsInitialise(yaffs_Device *
+       dev->chunkOffset = 0;
+       dev->nFreeChunks = 0;
+ 
++      dev->gcBlock = -1;
++
+       if (dev->startBlock == 0) {
+               dev->internalStartBlock = dev->startBlock + 1;
+               dev->internalEndBlock = dev->endBlock + 1;
+@@ -7049,18 +7137,18 @@ int yaffs_GutsInitialise(yaffs_Device *
+ 
+       /* Check geometry parameters. */
+ 
+-      if ((dev->isYaffs2 && dev->nDataBytesPerChunk < 1024) ||
+-          (!dev->isYaffs2 && dev->nDataBytesPerChunk != 512) ||
++      if ((!dev->inbandTags && dev->isYaffs2 && dev->totalBytesPerChunk < 1024) ||
++          (!dev->isYaffs2 && dev->totalBytesPerChunk < 512) ||
++          (dev->inbandTags && !dev->isYaffs2) ||
+            dev->nChunksPerBlock < 2 ||
+            dev->nReservedBlocks < 2 ||
+            dev->internalStartBlock <= 0 ||
+            dev->internalEndBlock <= 0 ||
+-           dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2)      // otherwise it is too small
+-          ) {
++           dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2)) {   /* otherwise it is too small */
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR
+-                 ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s "
+-                  TENDSTR), dev->nDataBytesPerChunk, dev->isYaffs2 ? "2" : ""));
++                 ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inbandTags %d "
++                  TENDSTR), dev->totalBytesPerChunk, dev->isYaffs2 ? "2" : "", dev->inbandTags));
+               return YAFFS_FAIL;
+       }
+ 
+@@ -7070,6 +7158,12 @@ int yaffs_GutsInitialise(yaffs_Device *
+               return YAFFS_FAIL;
+       }
+ 
++      /* Sort out space for inband tags, if required */
++      if (dev->inbandTags)
++              dev->nDataBytesPerChunk = dev->totalBytesPerChunk - sizeof(yaffs_PackedTags2TagsPart);
++      else
++              dev->nDataBytesPerChunk = dev->totalBytesPerChunk;
++
+       /* Got the right mix of functions? */
+       if (!yaffs_CheckDevFunctions(dev)) {
+               /* Function missing */
+@@ -7097,31 +7191,18 @@ int yaffs_GutsInitialise(yaffs_Device *
+ 
+       dev->isMounted = 1;
+ 
+-
+-
+       /* OK now calculate a few things for the device */
+ 
+       /*
+        *  Calculate all the chunk size manipulation numbers:
+        */
+-       /* Start off assuming it is a power of 2 */
+-       dev->chunkShift = ShiftDiv(dev->nDataBytesPerChunk);
+-       dev->chunkMask = (1<<dev->chunkShift) - 1;
+-
+-       if(dev->nDataBytesPerChunk == (dev->chunkMask + 1)){
+-              /* Yes it is a power of 2, disable crumbs */
+-              dev->crumbMask = 0;
+-              dev->crumbShift = 0;
+-              dev->crumbsPerChunk = 0;
+-       } else {
+-              /* Not a power of 2, use crumbs instead */
+-              dev->crumbShift = ShiftDiv(sizeof(yaffs_PackedTags2TagsPart));
+-              dev->crumbMask = (1<<dev->crumbShift)-1;
+-              dev->crumbsPerChunk = dev->nDataBytesPerChunk/(1 << dev->crumbShift);
+-              dev->chunkShift = 0;
+-              dev->chunkMask = 0;
+-      }
+-
++      x = dev->nDataBytesPerChunk;
++      /* We always use dev->chunkShift and dev->chunkDiv */
++      dev->chunkShift = Shifts(x);
++      x >>= dev->chunkShift;
++      dev->chunkDiv = x;
++      /* We only use chunk mask if chunkDiv is 1 */
++      dev->chunkMask = (1<<dev->chunkShift) - 1;
+ 
+       /*
+        * Calculate chunkGroupBits.
+@@ -7133,16 +7214,15 @@ int yaffs_GutsInitialise(yaffs_Device *
+       bits = ShiftsGE(x);
+ 
+       /* Set up tnode width if wide tnodes are enabled. */
+-      if(!dev->wideTnodesDisabled){
++      if (!dev->wideTnodesDisabled) {
+               /* bits must be even so that we end up with 32-bit words */
+-              if(bits & 1)
++              if (bits & 1)
+                       bits++;
+-              if(bits < 16)
++              if (bits < 16)
+                       dev->tnodeWidth = 16;
+               else
+                       dev->tnodeWidth = bits;
+-      }
+-      else
++      } else
+               dev->tnodeWidth = 16;
+ 
+       dev->tnodeMask = (1<<dev->tnodeWidth)-1;
+@@ -7193,7 +7273,7 @@ int yaffs_GutsInitialise(yaffs_Device *
+       dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */
+ 
+       /* Initialise temporary buffers and caches. */
+-      if(!yaffs_InitialiseTempBuffers(dev))
++      if (!yaffs_InitialiseTempBuffers(dev))
+               init_failed = 1;
+ 
+       dev->srCache = NULL;
+@@ -7203,25 +7283,26 @@ int yaffs_GutsInitialise(yaffs_Device *
+       if (!init_failed &&
+           dev->nShortOpCaches > 0) {
+               int i;
+-              __u8 *buf;
++              void *buf;
+               int srCacheBytes = dev->nShortOpCaches * sizeof(yaffs_ChunkCache);
+ 
+-              if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) {
++              if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES)
+                       dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES;
+-              }
+ 
+-              buf = dev->srCache =  YMALLOC(srCacheBytes);
++              dev->srCache =  YMALLOC(srCacheBytes);
+ 
+-              if(dev->srCache)
+-                      memset(dev->srCache,0,srCacheBytes);
++              buf = (__u8 *) dev->srCache;
++
++              if (dev->srCache)
++                      memset(dev->srCache, 0, srCacheBytes);
+ 
+               for (i = 0; i < dev->nShortOpCaches && buf; i++) {
+                       dev->srCache[i].object = NULL;
+                       dev->srCache[i].lastUse = 0;
+                       dev->srCache[i].dirty = 0;
+-                      dev->srCache[i].data = buf = YMALLOC_DMA(dev->nDataBytesPerChunk);
++                      dev->srCache[i].data = buf = YMALLOC_DMA(dev->totalBytesPerChunk);
+               }
+-              if(!buf)
++              if (!buf)
+                       init_failed = 1;
+ 
+               dev->srLastUse = 0;
+@@ -7229,29 +7310,30 @@ int yaffs_GutsInitialise(yaffs_Device *
+ 
+       dev->cacheHits = 0;
+ 
+-      if(!init_failed){
++      if (!init_failed) {
+               dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32));
+-              if(!dev->gcCleanupList)
++              if (!dev->gcCleanupList)
+                       init_failed = 1;
+       }
+ 
+-      if (dev->isYaffs2) {
++      if (dev->isYaffs2)
+               dev->useHeaderFileSize = 1;
+-      }
+-      if(!init_failed && !yaffs_InitialiseBlocks(dev))
++
++      if (!init_failed && !yaffs_InitialiseBlocks(dev))
+               init_failed = 1;
+ 
+       yaffs_InitialiseTnodes(dev);
+       yaffs_InitialiseObjects(dev);
+ 
+-      if(!init_failed && !yaffs_CreateInitialDirectories(dev))
++      if (!init_failed && !yaffs_CreateInitialDirectories(dev))
+               init_failed = 1;
+ 
+ 
+-      if(!init_failed){
++      if (!init_failed) {
+               /* Now scan the flash. */
+               if (dev->isYaffs2) {
+-                      if(yaffs_CheckpointRestore(dev)) {
++                      if (yaffs_CheckpointRestore(dev)) {
++                              yaffs_CheckObjectDetailsLoaded(dev->rootDir);
+                               T(YAFFS_TRACE_ALWAYS,
+                                 (TSTR("yaffs: restored from checkpoint" TENDSTR)));
+                       } else {
+@@ -7273,24 +7355,25 @@ int yaffs_GutsInitialise(yaffs_Device *
+                               dev->nBackgroundDeletions = 0;
+                               dev->oldestDirtySequence = 0;
+ 
+-                              if(!init_failed && !yaffs_InitialiseBlocks(dev))
++                              if (!init_failed && !yaffs_InitialiseBlocks(dev))
+                                       init_failed = 1;
+ 
+                               yaffs_InitialiseTnodes(dev);
+                               yaffs_InitialiseObjects(dev);
+ 
+-                              if(!init_failed && !yaffs_CreateInitialDirectories(dev))
++                              if (!init_failed && !yaffs_CreateInitialDirectories(dev))
+                                       init_failed = 1;
+ 
+-                              if(!init_failed && !yaffs_ScanBackwards(dev))
++                              if (!init_failed && !yaffs_ScanBackwards(dev))
+                                       init_failed = 1;
+                       }
+-              }else
+-                      if(!yaffs_Scan(dev))
++              } else if (!yaffs_Scan(dev))
+                               init_failed = 1;
++
++              yaffs_StripDeletedObjects(dev);
+       }
+ 
+-      if(init_failed){
++      if (init_failed) {
+               /* Clean up the mess */
+               T(YAFFS_TRACE_TRACING,
+                 (TSTR("yaffs: yaffs_GutsInitialise() aborted.\n" TENDSTR)));
+@@ -7318,7 +7401,7 @@ int yaffs_GutsInitialise(yaffs_Device *
+ 
+ }
+ 
+-void yaffs_Deinitialise(yaffs_Device * dev)
++void yaffs_Deinitialise(yaffs_Device *dev)
+ {
+       if (dev->isMounted) {
+               int i;
+@@ -7330,7 +7413,7 @@ void yaffs_Deinitialise(yaffs_Device * d
+                   dev->srCache) {
+ 
+                       for (i = 0; i < dev->nShortOpCaches; i++) {
+-                              if(dev->srCache[i].data)
++                              if (dev->srCache[i].data)
+                                       YFREE(dev->srCache[i].data);
+                               dev->srCache[i].data = NULL;
+                       }
+@@ -7341,16 +7424,17 @@ void yaffs_Deinitialise(yaffs_Device * d
+ 
+               YFREE(dev->gcCleanupList);
+ 
+-              for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
++              for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++)
+                       YFREE(dev->tempBuffer[i].buffer);
+-              }
+ 
+               dev->isMounted = 0;
+-      }
+ 
++              if (dev->deinitialiseNAND)
++                      dev->deinitialiseNAND(dev);
++      }
+ }
+ 
+-static int yaffs_CountFreeChunks(yaffs_Device * dev)
++static int yaffs_CountFreeChunks(yaffs_Device *dev)
+ {
+       int nFree;
+       int b;
+@@ -7358,7 +7442,7 @@ static int yaffs_CountFreeChunks(yaffs_D
+       yaffs_BlockInfo *blk;
+ 
+       for (nFree = 0, b = dev->internalStartBlock; b <= dev->internalEndBlock;
+-           b++) {
++                      b++) {
+               blk = yaffs_GetBlockInfo(dev, b);
+ 
+               switch (blk->blockState) {
+@@ -7373,19 +7457,19 @@ static int yaffs_CountFreeChunks(yaffs_D
+               default:
+                       break;
+               }
+-
+       }
+ 
+       return nFree;
+ }
+ 
+-int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev)
++int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev)
+ {
+       /* This is what we report to the outside world */
+ 
+       int nFree;
+       int nDirtyCacheChunks;
+       int blocksForCheckpoint;
++      int i;
+ 
+ #if 1
+       nFree = dev->nFreeChunks;
+@@ -7397,12 +7481,9 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De
+ 
+       /* Now count the number of dirty chunks in the cache and subtract those */
+ 
+-      {
+-              int i;
+-              for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) {
+-                      if (dev->srCache[i].dirty)
+-                              nDirtyCacheChunks++;
+-              }
++      for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) {
++              if (dev->srCache[i].dirty)
++                      nDirtyCacheChunks++;
+       }
+ 
+       nFree -= nDirtyCacheChunks;
+@@ -7410,8 +7491,8 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De
+       nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock);
+ 
+       /* Now we figure out how much to reserve for the checkpoint and report that... */
+-      blocksForCheckpoint = dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint;
+-      if(blocksForCheckpoint < 0)
++      blocksForCheckpoint = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
++      if (blocksForCheckpoint < 0)
+               blocksForCheckpoint = 0;
+ 
+       nFree -= (blocksForCheckpoint * dev->nChunksPerBlock);
+@@ -7425,12 +7506,12 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De
+ 
+ static int yaffs_freeVerificationFailures;
+ 
+-static void yaffs_VerifyFreeChunks(yaffs_Device * dev)
++static void yaffs_VerifyFreeChunks(yaffs_Device *dev)
+ {
+       int counted;
+       int difference;
+ 
+-      if(yaffs_SkipVerification(dev))
++      if (yaffs_SkipVerification(dev))
+               return;
+ 
+       counted = yaffs_CountFreeChunks(dev);
+@@ -7447,23 +7528,25 @@ static void yaffs_VerifyFreeChunks(yaffs
+ 
+ /*---------------------------------------- YAFFS test code ----------------------*/
+ 
+-#define yaffs_CheckStruct(structure,syze, name) \
+-           if(sizeof(structure) != syze) \
+-             { \
+-               T(YAFFS_TRACE_ALWAYS,(TSTR("%s should be %d but is %d\n" TENDSTR),\
+-               name,syze,sizeof(structure))); \
+-               return YAFFS_FAIL; \
+-              }
++#define yaffs_CheckStruct(structure, syze, name) \
++      do { \
++              if (sizeof(structure) != syze) { \
++                      T(YAFFS_TRACE_ALWAYS, (TSTR("%s should be %d but is %d\n" TENDSTR),\
++                              name, syze, sizeof(structure))); \
++                      return YAFFS_FAIL; \
++              } \
++      } while (0)
+ 
+ static int yaffs_CheckStructures(void)
+ {
+-/*      yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags") */
+-/*      yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion") */
+-/*      yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare") */
++/*      yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags"); */
++/*      yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion"); */
++/*      yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare"); */
+ #ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG
+-      yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode")
++      yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode");
+ #endif
+-          yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader")
+-
+-          return YAFFS_OK;
++#ifndef CONFIG_YAFFS_WINCE
++      yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader");
++#endif
++      return YAFFS_OK;
+ }
+--- a/fs/yaffs2/yaffs_guts.h
++++ b/fs/yaffs2/yaffs_guts.h
+@@ -90,7 +90,7 @@
+ 
+ #define YAFFS_MAX_SHORT_OP_CACHES     20
+ 
+-#define YAFFS_N_TEMP_BUFFERS          4
++#define YAFFS_N_TEMP_BUFFERS          6
+ 
+ /* We limit the number attempts at sucessfully saving a chunk of data.
+  * Small-page devices have 32 pages per block; large-page devices have 64.
+@@ -108,6 +108,9 @@
+ #define YAFFS_LOWEST_SEQUENCE_NUMBER  0x00001000
+ #define YAFFS_HIGHEST_SEQUENCE_NUMBER 0xEFFFFF00
+ 
++/* Special sequence number for bad block that failed to be marked bad */
++#define YAFFS_SEQUENCE_BAD_BLOCK      0xFFFF0000
++
+ /* ChunkCache is used for short read/write operations.*/
+ typedef struct {
+       struct yaffs_ObjectStruct *object;
+@@ -134,11 +137,10 @@ typedef struct {
+ typedef struct {
+       unsigned chunkId:20;
+       unsigned serialNumber:2;
+-      unsigned byteCount:10;
++      unsigned byteCountLSB:10;
+       unsigned objectId:18;
+       unsigned ecc:12;
+-      unsigned unusedStuff:2;
+-
++      unsigned byteCountMSB:2;
+ } yaffs_Tags;
+ 
+ typedef union {
+@@ -277,13 +279,13 @@ typedef struct {
+ 
+       int softDeletions:10;   /* number of soft deleted pages */
+       int pagesInUse:10;      /* number of pages in use */
+-      yaffs_BlockState blockState:4;  /* One of the above block states */
++      unsigned blockState:4;  /* One of the above block states. NB use unsigned because enum is sometimes an int */
+       __u32 needsRetiring:1;  /* Data has failed on this block, need to get valid data off */
+-                              /* and retire the block. */
+-      __u32 skipErasedCheck: 1; /* If this is set we can skip the erased check on this block */
+-      __u32 gcPrioritise: 1;  /* An ECC check or blank check has failed on this block.
++                              /* and retire the block. */
++      __u32 skipErasedCheck:1; /* If this is set we can skip the erased check on this block */
++      __u32 gcPrioritise:1;   /* An ECC check or blank check has failed on this block.
+                                  It should be prioritised for GC */
+-        __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
++      __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
+ 
+ #ifdef CONFIG_YAFFS_YAFFS2
+       __u32 hasShrinkHeader:1; /* This block has at least one shrink object header */
+@@ -300,11 +302,11 @@ typedef struct {
+ 
+       /* Apply to everything  */
+       int parentObjectId;
+-      __u16 sum__NoLongerUsed;        /* checksum of name. No longer used */
++      __u16 sum__NoLongerUsed;        /* checksum of name. No longer used */
+       YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
+ 
+-      /* Thes following apply to directories, files, symlinks - not hard links */
+-      __u32 yst_mode;         /* protection */
++      /* The following apply to directories, files, symlinks - not hard links */
++      __u32 yst_mode;         /* protection */
+ 
+ #ifdef CONFIG_YAFFS_WINCE
+       __u32 notForWinCE[5];
+@@ -331,11 +333,14 @@ typedef struct {
+       __u32 win_ctime[2];
+       __u32 win_atime[2];
+       __u32 win_mtime[2];
+-      __u32 roomToGrow[4];
+ #else
+-      __u32 roomToGrow[10];
++      __u32 roomToGrow[6];
++
+ #endif
++      __u32 inbandShadowsObject;
++      __u32 inbandIsShrink;
+ 
++      __u32 reservedSpace[2];
+       int shadowsObject;      /* This object header shadows the specified object if > 0 */
+ 
+       /* isShrink applies to object headers written when we shrink the file (ie resize) */
+@@ -381,7 +386,7 @@ typedef struct {
+ } yaffs_FileStructure;
+ 
+ typedef struct {
+-      struct list_head children;      /* list of child links */
++      struct ylist_head children;     /* list of child links */
+ } yaffs_DirectoryStructure;
+ 
+ typedef struct {
+@@ -418,23 +423,24 @@ struct yaffs_ObjectStruct {
+                                * still in the inode cache. Free of object is defered.
+                                * until the inode is released.
+                                */
++      __u8 beingCreated:1;    /* This object is still being created so skip some checks. */
+ 
+       __u8 serial;            /* serial number of chunk in NAND. Cached here */
+       __u16 sum;              /* sum of the name to speed searching */
+ 
+-      struct yaffs_DeviceStruct *myDev;       /* The device I'm on */
++      struct yaffs_DeviceStruct *myDev;       /* The device I'm on */
+ 
+-      struct list_head hashLink;      /* list of objects in this hash bucket */
++      struct ylist_head hashLink;     /* list of objects in this hash bucket */
+ 
+-      struct list_head hardLinks;     /* all the equivalent hard linked objects */
++      struct ylist_head hardLinks;    /* all the equivalent hard linked objects */
+ 
+       /* directory structure stuff */
+       /* also used for linking up the free list */
+       struct yaffs_ObjectStruct *parent;
+-      struct list_head siblings;
++      struct ylist_head siblings;
+ 
+       /* Where's my object header in NAND? */
+-      int chunkId;
++      int hdrChunk;
+ 
+       int nDataChunks;        /* Number of data chunks attached to the file. */
+ 
+@@ -485,7 +491,7 @@ struct yaffs_ObjectList_struct {
+ typedef struct yaffs_ObjectList_struct yaffs_ObjectList;
+ 
+ typedef struct {
+-      struct list_head list;
++      struct ylist_head list;
+       int count;
+ } yaffs_ObjectBucket;
+ 
+@@ -495,11 +501,10 @@ typedef struct {
+  */
+ 
+ typedef struct {
+-        int structType;
++      int structType;
+       __u32 objectId;
+       __u32 parentId;
+-      int chunkId;
+-
++      int hdrChunk;
+       yaffs_ObjectType variantType:3;
+       __u8 deleted:1;
+       __u8 softDeleted:1;
+@@ -511,8 +516,7 @@ typedef struct {
+ 
+       int nDataChunks;
+       __u32 fileSizeOrEquivalentObjectId;
+-
+-}yaffs_CheckpointObject;
++} yaffs_CheckpointObject;
+ 
+ /*--------------------- Temporary buffers ----------------
+  *
+@@ -528,13 +532,13 @@ typedef struct {
+ /*----------------- Device ---------------------------------*/
+ 
+ struct yaffs_DeviceStruct {
+-      struct list_head devList;
++      struct ylist_head devList;
+       const char *name;
+ 
+       /* Entry parameters set up way early. Yaffs sets up the rest.*/
+       int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */
+       int nChunksPerBlock;    /* does not need to be a power of 2 */
+-      int nBytesPerSpare;     /* spare area size */
++      int spareBytesPerChunk; /* spare area size */
+       int startBlock;         /* Start block we're allowed to use */
+       int endBlock;           /* End block we're allowed to use */
+       int nReservedBlocks;    /* We want this tuneable so that we can reduce */
+@@ -544,9 +548,7 @@ struct yaffs_DeviceStruct {
+       /* Stuff used by the shared space checkpointing mechanism */
+       /* If this value is zero, then this mechanism is disabled */
+ 
+-      int nCheckpointReservedBlocks; /* Blocks to reserve for checkpoint data */
+-
+-
++/*    int nCheckpointReservedBlocks; */ /* Blocks to reserve for checkpoint data */
+ 
+ 
+       int nShortOpCaches;     /* If <= 0, then short op caching is disabled, else
+@@ -560,30 +562,31 @@ struct yaffs_DeviceStruct {
+       void *genericDevice;    /* Pointer to device context
+                                * On an mtd this holds the mtd pointer.
+                                */
+-        void *superBlock;
++      void *superBlock;
+ 
+       /* NAND access functions (Must be set before calling YAFFS)*/
+ 
+-      int (*writeChunkToNAND) (struct yaffs_DeviceStruct * dev,
+-                               int chunkInNAND, const __u8 * data,
+-                               const yaffs_Spare * spare);
+-      int (*readChunkFromNAND) (struct yaffs_DeviceStruct * dev,
+-                                int chunkInNAND, __u8 * data,
+-                                yaffs_Spare * spare);
+-      int (*eraseBlockInNAND) (struct yaffs_DeviceStruct * dev,
+-                               int blockInNAND);
+-      int (*initialiseNAND) (struct yaffs_DeviceStruct * dev);
++      int (*writeChunkToNAND) (struct yaffs_DeviceStruct *dev,
++                                      int chunkInNAND, const __u8 *data,
++                                      const yaffs_Spare *spare);
++      int (*readChunkFromNAND) (struct yaffs_DeviceStruct *dev,
++                                      int chunkInNAND, __u8 *data,
++                                      yaffs_Spare *spare);
++      int (*eraseBlockInNAND) (struct yaffs_DeviceStruct *dev,
++                                      int blockInNAND);
++      int (*initialiseNAND) (struct yaffs_DeviceStruct *dev);
++      int (*deinitialiseNAND) (struct yaffs_DeviceStruct *dev);
+ 
+ #ifdef CONFIG_YAFFS_YAFFS2
+-      int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct * dev,
+-                                       int chunkInNAND, const __u8 * data,
+-                                       const yaffs_ExtendedTags * tags);
+-      int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct * dev,
+-                                        int chunkInNAND, __u8 * data,
+-                                        yaffs_ExtendedTags * tags);
+-      int (*markNANDBlockBad) (struct yaffs_DeviceStruct * dev, int blockNo);
+-      int (*queryNANDBlock) (struct yaffs_DeviceStruct * dev, int blockNo,
+-                             yaffs_BlockState * state, int *sequenceNumber);
++      int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct *dev,
++                                       int chunkInNAND, const __u8 *data,
++                                       const yaffs_ExtendedTags *tags);
++      int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct *dev,
++                                        int chunkInNAND, __u8 *data,
++                                        yaffs_ExtendedTags *tags);
++      int (*markNANDBlockBad) (struct yaffs_DeviceStruct *dev, int blockNo);
++      int (*queryNANDBlock) (struct yaffs_DeviceStruct *dev, int blockNo,
++                             yaffs_BlockState *state, __u32 *sequenceNumber);
+ #endif
+ 
+       int isYaffs2;
+@@ -595,10 +598,12 @@ struct yaffs_DeviceStruct {
+       void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj);
+ 
+       /* Callback to mark the superblock dirsty */
+-      void (*markSuperBlockDirty)(void * superblock);
++      void (*markSuperBlockDirty)(void *superblock);
+ 
+       int wideTnodesDisabled; /* Set to disable wide tnodes */
+ 
++      YCHAR *pathDividers;    /* String of legal path dividers */
++
+ 
+       /* End of stuff that must be set before initialisation. */
+ 
+@@ -615,16 +620,14 @@ struct yaffs_DeviceStruct {
+       __u32 tnodeWidth;
+       __u32 tnodeMask;
+ 
+-      /* Stuff to support various file offses to chunk/offset translations */
+-      /* "Crumbs" for nDataBytesPerChunk not being a power of 2 */
+-      __u32 crumbMask;
+-      __u32 crumbShift;
+-      __u32 crumbsPerChunk;
+-
+-      /* Straight shifting for nDataBytesPerChunk being a power of 2 */
+-      __u32 chunkShift;
+-      __u32 chunkMask;
+-
++      /* Stuff for figuring out file offset to chunk conversions */
++      __u32 chunkShift; /* Shift value */
++      __u32 chunkDiv;   /* Divisor after shifting: 1 for power-of-2 sizes */
++      __u32 chunkMask;  /* Mask to use for power-of-2 case */
++
++      /* Stuff to handle inband tags */
++      int inbandTags;
++      __u32 totalBytesPerChunk;
+ 
+ #ifdef __KERNEL__
+ 
+@@ -633,7 +636,7 @@ struct yaffs_DeviceStruct {
+       __u8 *spareBuffer;      /* For mtdif2 use. Don't know the size of the buffer
+                                * at compile time so we have to allocate it.
+                                */
+-      void (*putSuperFunc) (struct super_block * sb);
++      void (*putSuperFunc) (struct super_block *sb);
+ #endif
+ 
+       int isMounted;
+@@ -663,6 +666,8 @@ struct yaffs_DeviceStruct {
+       __u32 checkpointSum;
+       __u32 checkpointXor;
+ 
++      int nCheckpointBlocksRequired; /* Number of blocks needed to store current checkpoint set */
++
+       /* Block Info */
+       yaffs_BlockInfo *blockInfo;
+       __u8 *chunkBits;        /* bitmap of chunks in use */
+@@ -684,11 +689,15 @@ struct yaffs_DeviceStruct {
+       yaffs_TnodeList *allocatedTnodeList;
+ 
+       int isDoingGC;
++      int gcBlock;
++      int gcChunk;
+ 
+       int nObjectsCreated;
+       yaffs_Object *freeObjects;
+       int nFreeObjects;
+ 
++      int nHardLinks;
++
+       yaffs_ObjectList *allocatedObjectList;
+ 
+       yaffs_ObjectBucket objectBucket[YAFFS_NOBJECT_BUCKETS];
+@@ -745,8 +754,10 @@ struct yaffs_DeviceStruct {
+       int nBackgroundDeletions;       /* Count of background deletions. */
+ 
+ 
++      /* Temporary buffer management */
+       yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS];
+       int maxTemp;
++      int tempInUse;
+       int unmanagedTempAllocations;
+       int unmanagedTempDeallocations;
+ 
+@@ -758,9 +769,9 @@ struct yaffs_DeviceStruct {
+ 
+ typedef struct yaffs_DeviceStruct yaffs_Device;
+ 
+-/* The static layout of bllock usage etc is stored in the super block header */
++/* The static layout of block usage etc is stored in the super block header */
+ typedef struct {
+-        int StructType;
++      int StructType;
+       int version;
+       int checkpointStartBlock;
+       int checkpointEndBlock;
+@@ -773,7 +784,7 @@ typedef struct {
+  * must be preserved over unmount/mount cycles.
+  */
+ typedef struct {
+-        int structType;
++      int structType;
+       int nErasedBlocks;
+       int allocationBlock;    /* Current block being allocated off */
+       __u32 allocationPage;
+@@ -791,57 +802,45 @@ typedef struct {
+ 
+ 
+ typedef struct {
+-    int structType;
+-    __u32 magic;
+-    __u32 version;
+-    __u32 head;
++      int structType;
++      __u32 magic;
++      __u32 version;
++      __u32 head;
+ } yaffs_CheckpointValidity;
+ 
+-/* Function to manipulate block info */
+-static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk)
+-{
+-      if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
+-              T(YAFFS_TRACE_ERROR,
+-                (TSTR
+-                 ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR),
+-                 blk));
+-              YBUG();
+-      }
+-      return &dev->blockInfo[blk - dev->internalStartBlock];
+-}
+ 
+ /*----------------------- YAFFS Functions -----------------------*/
+ 
+-int yaffs_GutsInitialise(yaffs_Device * dev);
+-void yaffs_Deinitialise(yaffs_Device * dev);
++int yaffs_GutsInitialise(yaffs_Device *dev);
++void yaffs_Deinitialise(yaffs_Device *dev);
+ 
+-int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev);
++int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev);
+ 
+-int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName,
+-                     yaffs_Object * newDir, const YCHAR * newName);
++int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName,
++                     yaffs_Object *newDir, const YCHAR *newName);
+ 
+-int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name);
+-int yaffs_DeleteFile(yaffs_Object * obj);
++int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name);
++int yaffs_DeleteObject(yaffs_Object *obj);
+ 
+-int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize);
+-int yaffs_GetObjectFileLength(yaffs_Object * obj);
+-int yaffs_GetObjectInode(yaffs_Object * obj);
+-unsigned yaffs_GetObjectType(yaffs_Object * obj);
+-int yaffs_GetObjectLinkCount(yaffs_Object * obj);
++int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize);
++int yaffs_GetObjectFileLength(yaffs_Object *obj);
++int yaffs_GetObjectInode(yaffs_Object *obj);
++unsigned yaffs_GetObjectType(yaffs_Object *obj);
++int yaffs_GetObjectLinkCount(yaffs_Object *obj);
+ 
+-int yaffs_SetAttributes(yaffs_Object * obj, struct iattr *attr);
+-int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr);
++int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr);
++int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr);
+ 
+ /* File operations */
+-int yaffs_ReadDataFromFile(yaffs_Object * obj, __u8 * buffer, loff_t offset,
+-                         int nBytes);
+-int yaffs_WriteDataToFile(yaffs_Object * obj, const __u8 * buffer, loff_t offset,
+-                        int nBytes, int writeThrough);
+-int yaffs_ResizeFile(yaffs_Object * obj, loff_t newSize);
+-
+-yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name,
+-                            __u32 mode, __u32 uid, __u32 gid);
+-int yaffs_FlushFile(yaffs_Object * obj, int updateTime);
++int yaffs_ReadDataFromFile(yaffs_Object *obj, __u8 *buffer, loff_t offset,
++                              int nBytes);
++int yaffs_WriteDataToFile(yaffs_Object *obj, const __u8 *buffer, loff_t offset,
++                              int nBytes, int writeThrough);
++int yaffs_ResizeFile(yaffs_Object *obj, loff_t newSize);
++
++yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name,
++                              __u32 mode, __u32 uid, __u32 gid);
++int yaffs_FlushFile(yaffs_Object *obj, int updateTime);
+ 
+ /* Flushing and checkpointing */
+ void yaffs_FlushEntireDeviceCache(yaffs_Device *dev);
+@@ -850,33 +849,33 @@ int yaffs_CheckpointSave(yaffs_Device *d
+ int yaffs_CheckpointRestore(yaffs_Device *dev);
+ 
+ /* Directory operations */
+-yaffs_Object *yaffs_MknodDirectory(yaffs_Object * parent, const YCHAR * name,
+-                                 __u32 mode, __u32 uid, __u32 gid);
+-yaffs_Object *yaffs_FindObjectByName(yaffs_Object * theDir, const YCHAR * name);
+-int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir,
++yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name,
++                              __u32 mode, __u32 uid, __u32 gid);
++yaffs_Object *yaffs_FindObjectByName(yaffs_Object *theDir, const YCHAR *name);
++int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir,
+                                  int (*fn) (yaffs_Object *));
+ 
+-yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number);
++yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number);
+ 
+ /* Link operations */
+-yaffs_Object *yaffs_Link(yaffs_Object * parent, const YCHAR * name,
+-                       yaffs_Object * equivalentObject);
++yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name,
++                       yaffs_Object *equivalentObject);
+ 
+-yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object * obj);
++yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj);
+ 
+ /* Symlink operations */
+-yaffs_Object *yaffs_MknodSymLink(yaffs_Object * parent, const YCHAR * name,
++yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name,
+                                __u32 mode, __u32 uid, __u32 gid,
+-                               const YCHAR * alias);
+-YCHAR *yaffs_GetSymlinkAlias(yaffs_Object * obj);
++                               const YCHAR *alias);
++YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj);
+ 
+ /* Special inodes (fifos, sockets and devices) */
+-yaffs_Object *yaffs_MknodSpecial(yaffs_Object * parent, const YCHAR * name,
++yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name,
+                                __u32 mode, __u32 uid, __u32 gid, __u32 rdev);
+ 
+ /* Special directories */
+-yaffs_Object *yaffs_Root(yaffs_Device * dev);
+-yaffs_Object *yaffs_LostNFound(yaffs_Device * dev);
++yaffs_Object *yaffs_Root(yaffs_Device *dev);
++yaffs_Object *yaffs_LostNFound(yaffs_Device *dev);
+ 
+ #ifdef CONFIG_YAFFS_WINCE
+ /* CONFIG_YAFFS_WINCE special stuff */
+@@ -885,18 +884,21 @@ void yfsd_WinFileTimeNow(__u32 target[2]
+ 
+ #ifdef __KERNEL__
+ 
+-void yaffs_HandleDeferedFree(yaffs_Object * obj);
++void yaffs_HandleDeferedFree(yaffs_Object *obj);
+ #endif
+ 
+ /* Debug dump  */
+-int yaffs_DumpObject(yaffs_Object * obj);
++int yaffs_DumpObject(yaffs_Object *obj);
+ 
+-void yaffs_GutsTest(yaffs_Device * dev);
++void yaffs_GutsTest(yaffs_Device *dev);
+ 
+ /* A few useful functions */
+-void yaffs_InitialiseTags(yaffs_ExtendedTags * tags);
+-void yaffs_DeleteChunk(yaffs_Device * dev, int chunkId, int markNAND, int lyn);
+-int yaffs_CheckFF(__u8 * buffer, int nBytes);
++void yaffs_InitialiseTags(yaffs_ExtendedTags *tags);
++void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn);
++int yaffs_CheckFF(__u8 *buffer, int nBytes);
+ void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi);
+ 
++__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo);
++void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, int lineNo);
++
+ #endif
+--- a/fs/yaffs2/yaffs_mtdif1.c
++++ b/fs/yaffs2/yaffs_mtdif1.c
+@@ -26,7 +26,7 @@
+ #include "yportenv.h"
+ #include "yaffs_guts.h"
+ #include "yaffs_packedtags1.h"
+-#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC
++#include "yaffs_tagscompat.h" /* for yaffs_CalcTagsECC */
+ 
+ #include "linux/kernel.h"
+ #include "linux/version.h"
+@@ -34,9 +34,9 @@
+ #include "linux/mtd/mtd.h"
+ 
+ /* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+ 
+-const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.3 2007/05/15 20:16:11 ian Exp $";
++const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.10 2009-03-09 07:41:10 charles Exp $";
+ 
+ #ifndef CONFIG_YAFFS_9BYTE_TAGS
+ # define YTAG1_SIZE 8
+@@ -89,9 +89,9 @@ static struct nand_ecclayout nand_oob_16
+  * Returns YAFFS_OK or YAFFS_FAIL.
+  */
+ int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev,
+-      int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags)
++      int chunkInNAND, const __u8 *data, const yaffs_ExtendedTags *etags)
+ {
+-      struct mtd_info * mtd = dev->genericDevice;
++      struct mtd_info *mtd = dev->genericDevice;
+       int chunkBytes = dev->nDataBytesPerChunk;
+       loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
+       struct mtd_oob_ops ops;
+@@ -146,7 +146,7 @@ int nandmtd1_WriteChunkWithTagsToNAND(ya
+ 
+ /* Return with empty ExtendedTags but add eccResult.
+  */
+-static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval)
++static int rettags(yaffs_ExtendedTags *etags, int eccResult, int retval)
+ {
+       if (etags) {
+               memset(etags, 0, sizeof(*etags));
+@@ -169,9 +169,9 @@ static int rettags(yaffs_ExtendedTags *
+  * Returns YAFFS_OK or YAFFS_FAIL.
+  */
+ int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
+-      int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags)
++      int chunkInNAND, __u8 *data, yaffs_ExtendedTags *etags)
+ {
+-      struct mtd_info * mtd = dev->genericDevice;
++      struct mtd_info *mtd = dev->genericDevice;
+       int chunkBytes = dev->nDataBytesPerChunk;
+       loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
+       int eccres = YAFFS_ECC_RESULT_NO_ERROR;
+@@ -189,7 +189,7 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
+       ops.datbuf = data;
+       ops.oobbuf = (__u8 *)&pt1;
+ 
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20))
++#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 20))
+       /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
+        * help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
+        */
+@@ -284,11 +284,11 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
+  */
+ int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
+ {
+-      struct mtd_info * mtd = dev->genericDevice;
++      struct mtd_info *mtd = dev->genericDevice;
+       int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk;
+       int retval;
+ 
+-      yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo);
++      yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad\n", blockNo);
+ 
+       retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
+       return (retval) ? YAFFS_FAIL : YAFFS_OK;
+@@ -298,7 +298,7 @@ int nandmtd1_MarkNANDBlockBad(struct yaf
+  *
+  * Returns YAFFS_OK or YAFFS_FAIL.
+  */
+-static int nandmtd1_TestPrerequists(struct mtd_info * mtd)
++static int nandmtd1_TestPrerequists(struct mtd_info *mtd)
+ {
+       /* 2.6.18 has mtd->ecclayout->oobavail */
+       /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */
+@@ -323,10 +323,11 @@ static int nandmtd1_TestPrerequists(stru
+  * Always returns YAFFS_OK.
+  */
+ int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+-      yaffs_BlockState * pState, int *pSequenceNumber)
++      yaffs_BlockState *pState, __u32 *pSequenceNumber)
+ {
+-      struct mtd_info * mtd = dev->genericDevice;
++      struct mtd_info *mtd = dev->genericDevice;
+       int chunkNo = blockNo * dev->nChunksPerBlock;
++      loff_t addr = (loff_t)chunkNo * dev->nDataBytesPerChunk;
+       yaffs_ExtendedTags etags;
+       int state = YAFFS_BLOCK_STATE_DEAD;
+       int seqnum = 0;
+@@ -335,21 +336,22 @@ int nandmtd1_QueryNANDBlock(struct yaffs
+       /* We don't yet have a good place to test for MTD config prerequists.
+        * Do it here as we are called during the initial scan.
+        */
+-      if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) {
++      if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK)
+               return YAFFS_FAIL;
+-      }
+ 
+       retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
++      etags.blockBad = (mtd->block_isbad)(mtd, addr);
+       if (etags.blockBad) {
+               yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
+-                      "block %d is marked bad", blockNo);
++                      "block %d is marked bad\n", blockNo);
+               state = YAFFS_BLOCK_STATE_DEAD;
+-      }
+-      else if (etags.chunkUsed) {
++      } else if (etags.eccResult != YAFFS_ECC_RESULT_NO_ERROR) {
++              /* bad tags, need to look more closely */
++              state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
++      } else if (etags.chunkUsed) {
+               state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
+               seqnum = etags.sequenceNumber;
+-      }
+-      else {
++      } else {
+               state = YAFFS_BLOCK_STATE_EMPTY;
+       }
+ 
+@@ -360,4 +362,4 @@ int nandmtd1_QueryNANDBlock(struct yaffs
+       return YAFFS_OK;
+ }
+ 
+-#endif /*KERNEL_VERSION*/
++#endif /*MTD_VERSION*/
+--- a/fs/yaffs2/yaffs_mtdif1.h
++++ b/fs/yaffs2/yaffs_mtdif1.h
+@@ -14,15 +14,15 @@
+ #ifndef __YAFFS_MTDIF1_H__
+ #define __YAFFS_MTDIF1_H__
+ 
+-int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
+-      const __u8 * data, const yaffs_ExtendedTags * tags);
++int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
++      const __u8 *data, const yaffs_ExtendedTags *tags);
+ 
+-int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
+-      __u8 * data, yaffs_ExtendedTags * tags);
++int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
++      __u8 *data, yaffs_ExtendedTags *tags);
+ 
+ int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
+ 
+ int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+-      yaffs_BlockState * state, int *sequenceNumber);
++      yaffs_BlockState *state, __u32 *sequenceNumber);
+ 
+ #endif
+--- a/fs/yaffs2/yaffs_mtdif2.c
++++ b/fs/yaffs2/yaffs_mtdif2.c
+@@ -14,7 +14,7 @@
+ /* mtd interface for YAFFS2 */
+ 
+ const char *yaffs_mtdif2_c_version =
+-    "$Id: yaffs_mtdif2.c,v 1.17 2007-02-14 01:09:06 wookey Exp $";
++      "$Id: yaffs_mtdif2.c,v 1.23 2009-03-06 17:20:53 wookey Exp $";
+ 
+ #include "yportenv.h"
+ 
+@@ -27,19 +27,23 @@ const char *yaffs_mtdif2_c_version =
+ 
+ #include "yaffs_packedtags2.h"
+ 
+-int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
+-                                    const __u8 * data,
+-                                    const yaffs_ExtendedTags * tags)
++/* NB For use with inband tags....
++ * We assume that the data buffer is of size totalBytersPerChunk so that we can also
++ * use it to load the tags.
++ */
++int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
++                                    const __u8 *data,
++                                    const yaffs_ExtendedTags *tags)
+ {
+       struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+       struct mtd_oob_ops ops;
+ #else
+       size_t dummy;
+ #endif
+       int retval = 0;
+ 
+-      loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
++      loff_t addr;
+ 
+       yaffs_PackedTags2 pt;
+ 
+@@ -48,46 +52,40 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya
+          ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p"
+           TENDSTR), chunkInNAND, data, tags));
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+-      if (tags)
+-              yaffs_PackTags2(&pt, tags);
+-      else
+-              BUG(); /* both tags and data should always be present */
+ 
+-      if (data) {
+-              ops.mode = MTD_OOB_AUTO;
+-              ops.ooblen = sizeof(pt);
+-              ops.len = dev->nDataBytesPerChunk;
+-              ops.ooboffs = 0;
+-              ops.datbuf = (__u8 *)data;
+-              ops.oobbuf = (void *)&pt;
+-              retval = mtd->write_oob(mtd, addr, &ops);
++      addr  = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk;
++
++      /* For yaffs2 writing there must be both data and tags.
++       * If we're using inband tags, then the tags are stuffed into
++       * the end of the data buffer.
++       */
++      if (!data || !tags)
++              BUG();
++      else if (dev->inbandTags) {
++              yaffs_PackedTags2TagsPart *pt2tp;
++              pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->nDataBytesPerChunk);
++              yaffs_PackTags2TagsPart(pt2tp, tags);
+       } else
+-              BUG(); /* both tags and data should always be present */
+-#else
+-      if (tags) {
+               yaffs_PackTags2(&pt, tags);
+-      }
+ 
+-      if (data && tags) {
+-              if (dev->useNANDECC)
+-                      retval =
+-                          mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
+-                                         &dummy, data, (__u8 *) & pt, NULL);
+-              else
+-                      retval =
+-                          mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
+-                                         &dummy, data, (__u8 *) & pt, NULL);
+-      } else {
+-              if (data)
+-                      retval =
+-                          mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy,
+-                                     data);
+-              if (tags)
+-                      retval =
+-                          mtd->write_oob(mtd, addr, mtd->oobsize, &dummy,
+-                                         (__u8 *) & pt);
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++      ops.mode = MTD_OOB_AUTO;
++      ops.ooblen = (dev->inbandTags) ? 0 : sizeof(pt);
++      ops.len = dev->totalBytesPerChunk;
++      ops.ooboffs = 0;
++      ops.datbuf = (__u8 *)data;
++      ops.oobbuf = (dev->inbandTags) ? NULL : (void *)&pt;
++      retval = mtd->write_oob(mtd, addr, &ops);
+ 
++#else
++      if (!dev->inbandTags) {
++              retval =
++                  mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
++                                 &dummy, data, (__u8 *) &pt, NULL);
++      } else {
++              retval =
++                  mtd->write(mtd, addr, dev->totalBytesPerChunk, &dummy,
++                             data);
+       }
+ #endif
+ 
+@@ -97,17 +95,18 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya
+               return YAFFS_FAIL;
+ }
+ 
+-int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
+-                                     __u8 * data, yaffs_ExtendedTags * tags)
++int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
++                                     __u8 *data, yaffs_ExtendedTags *tags)
+ {
+       struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+       struct mtd_oob_ops ops;
+ #endif
+       size_t dummy;
+       int retval = 0;
++      int localData = 0;
+ 
+-      loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
++      loff_t addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk;
+ 
+       yaffs_PackedTags2 pt;
+ 
+@@ -116,9 +115,20 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+          ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p"
+           TENDSTR), chunkInNAND, data, tags));
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+-      if (data && !tags)
+-              retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk,
++      if (dev->inbandTags) {
++
++              if (!data) {
++                      localData = 1;
++                      data = yaffs_GetTempBuffer(dev, __LINE__);
++              }
++
++
++      }
++
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++      if (dev->inbandTags || (data && !tags))
++              retval = mtd->read(mtd, addr, dev->totalBytesPerChunk,
+                               &dummy, data);
+       else if (tags) {
+               ops.mode = MTD_OOB_AUTO;
+@@ -130,38 +140,42 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+               retval = mtd->read_oob(mtd, addr, &ops);
+       }
+ #else
+-      if (data && tags) {
+-              if (dev->useNANDECC) {
+-                      retval =
+-                          mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
+-                                        &dummy, data, dev->spareBuffer,
+-                                        NULL);
+-              } else {
+-                      retval =
+-                          mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
++      if (!dev->inbandTags && data && tags) {
++
++              retval = mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
+                                         &dummy, data, dev->spareBuffer,
+                                         NULL);
+-              }
+       } else {
+               if (data)
+                       retval =
+                           mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy,
+                                     data);
+-              if (tags)
++              if (!dev->inbandTags && tags)
+                       retval =
+                           mtd->read_oob(mtd, addr, mtd->oobsize, &dummy,
+                                         dev->spareBuffer);
+       }
+ #endif
+ 
+-      memcpy(&pt, dev->spareBuffer, sizeof(pt));
+ 
+-      if (tags)
+-              yaffs_UnpackTags2(tags, &pt);
++      if (dev->inbandTags) {
++              if (tags) {
++                      yaffs_PackedTags2TagsPart *pt2tp;
++                      pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->nDataBytesPerChunk];
++                      yaffs_UnpackTags2TagsPart(tags, pt2tp);
++              }
++      } else {
++              if (tags) {
++                      memcpy(&pt, dev->spareBuffer, sizeof(pt));
++                      yaffs_UnpackTags2(tags, &pt);
++              }
++      }
++
++      if (localData)
++              yaffs_ReleaseTempBuffer(dev, data, __LINE__);
+ 
+-      if(tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR)
++      if (tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR)
+               tags->eccResult = YAFFS_ECC_RESULT_UNFIXED;
+-
+       if (retval == 0)
+               return YAFFS_OK;
+       else
+@@ -178,7 +192,7 @@ int nandmtd2_MarkNANDBlockBad(struct yaf
+       retval =
+           mtd->block_markbad(mtd,
+                              blockNo * dev->nChunksPerBlock *
+-                             dev->nDataBytesPerChunk);
++                             dev->totalBytesPerChunk);
+ 
+       if (retval == 0)
+               return YAFFS_OK;
+@@ -188,7 +202,7 @@ int nandmtd2_MarkNANDBlockBad(struct yaf
+ }
+ 
+ int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+-                          yaffs_BlockState * state, int *sequenceNumber)
++                          yaffs_BlockState *state, __u32 *sequenceNumber)
+ {
+       struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+       int retval;
+@@ -198,7 +212,7 @@ int nandmtd2_QueryNANDBlock(struct yaffs
+       retval =
+           mtd->block_isbad(mtd,
+                            blockNo * dev->nChunksPerBlock *
+-                           dev->nDataBytesPerChunk);
++                           dev->totalBytesPerChunk);
+ 
+       if (retval) {
+               T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR)));
+--- a/fs/yaffs2/yaffs_mtdif2.h
++++ b/fs/yaffs2/yaffs_mtdif2.h
+@@ -17,13 +17,13 @@
+ #define __YAFFS_MTDIF2_H__
+ 
+ #include "yaffs_guts.h"
+-int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
+-                                    const __u8 * data,
+-                                    const yaffs_ExtendedTags * tags);
+-int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
+-                                     __u8 * data, yaffs_ExtendedTags * tags);
++int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
++                              const __u8 *data,
++                              const yaffs_ExtendedTags *tags);
++int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
++                              __u8 *data, yaffs_ExtendedTags *tags);
+ int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
+ int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+-                          yaffs_BlockState * state, int *sequenceNumber);
++                      yaffs_BlockState *state, __u32 *sequenceNumber);
+ 
+ #endif
+--- a/fs/yaffs2/yaffs_mtdif.c
++++ b/fs/yaffs2/yaffs_mtdif.c
+@@ -12,7 +12,7 @@
+  */
+ 
+ const char *yaffs_mtdif_c_version =
+-    "$Id: yaffs_mtdif.c,v 1.19 2007-02-14 01:09:06 wookey Exp $";
++      "$Id: yaffs_mtdif.c,v 1.22 2009-03-06 17:20:51 wookey Exp $";
+ 
+ #include "yportenv.h"
+ 
+@@ -24,7 +24,7 @@ const char *yaffs_mtdif_c_version =
+ #include "linux/time.h"
+ #include "linux/mtd/nand.h"
+ 
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
++#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 18))
+ static struct nand_oobinfo yaffs_oobinfo = {
+       .useecc = 1,
+       .eccbytes = 6,
+@@ -36,7 +36,7 @@ static struct nand_oobinfo yaffs_noeccin
+ };
+ #endif
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+ static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob)
+ {
+       oob[0] = spare->tagByte0;
+@@ -45,8 +45,8 @@ static inline void translate_spare2oob(c
+       oob[3] = spare->tagByte3;
+       oob[4] = spare->tagByte4;
+       oob[5] = spare->tagByte5 & 0x3f;
+-      oob[5] |= spare->blockStatus == 'Y' ? 0: 0x80;
+-      oob[5] |= spare->pageStatus == 0 ? 0: 0x40;
++      oob[5] |= spare->blockStatus == 'Y' ? 0 : 0x80;
++      oob[5] |= spare->pageStatus == 0 ? 0 : 0x40;
+       oob[6] = spare->tagByte6;
+       oob[7] = spare->tagByte7;
+ }
+@@ -71,18 +71,18 @@ static inline void translate_oob2spare(y
+ }
+ #endif
+ 
+-int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND,
+-                           const __u8 * data, const yaffs_Spare * spare)
++int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND,
++                           const __u8 *data, const yaffs_Spare *spare)
+ {
+       struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+       struct mtd_oob_ops ops;
+ #endif
+       size_t dummy;
+       int retval = 0;
+ 
+       loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+       __u8 spareAsBytes[8]; /* OOB */
+ 
+       if (data && !spare)
+@@ -135,18 +135,18 @@ int nandmtd_WriteChunkToNAND(yaffs_Devic
+               return YAFFS_FAIL;
+ }
+ 
+-int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data,
+-                            yaffs_Spare * spare)
++int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data,
++                            yaffs_Spare *spare)
+ {
+       struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+       struct mtd_oob_ops ops;
+ #endif
+       size_t dummy;
+       int retval = 0;
+ 
+       loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+       __u8 spareAsBytes[8]; /* OOB */
+ 
+       if (data && !spare)
+@@ -205,7 +205,7 @@ int nandmtd_ReadChunkFromNAND(yaffs_Devi
+               return YAFFS_FAIL;
+ }
+ 
+-int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber)
++int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber)
+ {
+       struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+       __u32 addr =
+@@ -234,7 +234,7 @@ int nandmtd_EraseBlockInNAND(yaffs_Devic
+               return YAFFS_FAIL;
+ }
+ 
+-int nandmtd_InitialiseNAND(yaffs_Device * dev)
++int nandmtd_InitialiseNAND(yaffs_Device *dev)
+ {
+       return YAFFS_OK;
+ }
+--- a/fs/yaffs2/yaffs_mtdif.h
++++ b/fs/yaffs2/yaffs_mtdif.h
+@@ -18,10 +18,15 @@
+ 
+ #include "yaffs_guts.h"
+ 
+-int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND,
+-                           const __u8 * data, const yaffs_Spare * spare);
+-int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data,
+-                            yaffs_Spare * spare);
+-int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber);
+-int nandmtd_InitialiseNAND(yaffs_Device * dev);
++#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 18))
++extern struct nand_oobinfo yaffs_oobinfo;
++extern struct nand_oobinfo yaffs_noeccinfo;
++#endif
++
++int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND,
++                      const __u8 *data, const yaffs_Spare *spare);
++int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data,
++                      yaffs_Spare *spare);
++int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber);
++int nandmtd_InitialiseNAND(yaffs_Device *dev);
+ #endif
+--- a/fs/yaffs2/yaffs_nand.c
++++ b/fs/yaffs2/yaffs_nand.c
+@@ -12,16 +12,17 @@
+  */
+ 
+ const char *yaffs_nand_c_version =
+-    "$Id: yaffs_nand.c,v 1.7 2007-02-14 01:09:06 wookey Exp $";
++      "$Id: yaffs_nand.c,v 1.10 2009-03-06 17:20:54 wookey Exp $";
+ 
+ #include "yaffs_nand.h"
+ #include "yaffs_tagscompat.h"
+ #include "yaffs_tagsvalidity.h"
+ 
++#include "yaffs_getblockinfo.h"
+ 
+-int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
+-                                         __u8 * buffer,
+-                                         yaffs_ExtendedTags * tags)
++int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
++                                         __u8 *buffer,
++                                         yaffs_ExtendedTags *tags)
+ {
+       int result;
+       yaffs_ExtendedTags localTags;
+@@ -29,7 +30,7 @@ int yaffs_ReadChunkWithTagsFromNAND(yaff
+       int realignedChunkInNAND = chunkInNAND - dev->chunkOffset;
+ 
+       /* If there are no tags provided, use local tags to get prioritised gc working */
+-      if(!tags)
++      if (!tags)
+               tags = &localTags;
+ 
+       if (dev->readChunkWithTagsFromNAND)
+@@ -40,20 +41,20 @@ int yaffs_ReadChunkWithTagsFromNAND(yaff
+                                                                       realignedChunkInNAND,
+                                                                       buffer,
+                                                                       tags);
+-      if(tags &&
+-         tags->eccResult > YAFFS_ECC_RESULT_NO_ERROR){
++      if (tags &&
++         tags->eccResult > YAFFS_ECC_RESULT_NO_ERROR) {
+ 
+               yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, chunkInNAND/dev->nChunksPerBlock);
+-                yaffs_HandleChunkError(dev,bi);
++              yaffs_HandleChunkError(dev, bi);
+       }
+ 
+       return result;
+ }
+ 
+-int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev,
++int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev,
+                                                  int chunkInNAND,
+-                                                 const __u8 * buffer,
+-                                                 yaffs_ExtendedTags * tags)
++                                                 const __u8 *buffer,
++                                                 yaffs_ExtendedTags *tags)
+ {
+       chunkInNAND -= dev->chunkOffset;
+ 
+@@ -84,7 +85,7 @@ int yaffs_WriteChunkWithTagsToNAND(yaffs
+                                                                      tags);
+ }
+ 
+-int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo)
++int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo)
+ {
+       blockNo -= dev->blockOffset;
+ 
+@@ -95,10 +96,10 @@ int yaffs_MarkBlockBad(yaffs_Device * de
+               return yaffs_TagsCompatabilityMarkNANDBlockBad(dev, blockNo);
+ }
+ 
+-int yaffs_QueryInitialBlockState(yaffs_Device * dev,
++int yaffs_QueryInitialBlockState(yaffs_Device *dev,
+                                                int blockNo,
+-                                               yaffs_BlockState * state,
+-                                               unsigned *sequenceNumber)
++                                               yaffs_BlockState *state,
++                                               __u32 *sequenceNumber)
+ {
+       blockNo -= dev->blockOffset;
+ 
+--- a/fs/yaffs2/yaffs_nandemul2k.h
++++ b/fs/yaffs2/yaffs_nandemul2k.h
+@@ -21,14 +21,14 @@
+ #include "yaffs_guts.h"
+ 
+ int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
+-                                      int chunkInNAND, const __u8 * data,
+-                                      yaffs_ExtendedTags * tags);
++                                      int chunkInNAND, const __u8 *data,
++                                      const yaffs_ExtendedTags *tags);
+ int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_DeviceStruct *dev,
+-                                       int chunkInNAND, __u8 * data,
+-                                       yaffs_ExtendedTags * tags);
++                                       int chunkInNAND, __u8 *data,
++                                       yaffs_ExtendedTags *tags);
+ int nandemul2k_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
+ int nandemul2k_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+-                            yaffs_BlockState * state, int *sequenceNumber);
++                            yaffs_BlockState *state, __u32 *sequenceNumber);
+ int nandemul2k_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
+                               int blockInNAND);
+ int nandemul2k_InitialiseNAND(struct yaffs_DeviceStruct *dev);
+--- a/fs/yaffs2/yaffs_nand.h
++++ b/fs/yaffs2/yaffs_nand.h
+@@ -19,21 +19,21 @@
+ 
+ 
+ 
+-int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
+-                                         __u8 * buffer,
+-                                         yaffs_ExtendedTags * tags);
+-
+-int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev,
+-                                                 int chunkInNAND,
+-                                                 const __u8 * buffer,
+-                                                 yaffs_ExtendedTags * tags);
+-
+-int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo);
+-
+-int yaffs_QueryInitialBlockState(yaffs_Device * dev,
+-                                               int blockNo,
+-                                               yaffs_BlockState * state,
+-                                               unsigned *sequenceNumber);
++int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
++                                      __u8 *buffer,
++                                      yaffs_ExtendedTags *tags);
++
++int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev,
++                                              int chunkInNAND,
++                                              const __u8 *buffer,
++                                              yaffs_ExtendedTags *tags);
++
++int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo);
++
++int yaffs_QueryInitialBlockState(yaffs_Device *dev,
++                                              int blockNo,
++                                              yaffs_BlockState *state,
++                                              unsigned *sequenceNumber);
+ 
+ int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
+                                 int blockInNAND);
+--- a/fs/yaffs2/yaffs_packedtags1.c
++++ b/fs/yaffs2/yaffs_packedtags1.c
+@@ -14,7 +14,7 @@
+ #include "yaffs_packedtags1.h"
+ #include "yportenv.h"
+ 
+-void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t)
++void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t)
+ {
+       pt->chunkId = t->chunkId;
+       pt->serialNumber = t->serialNumber;
+@@ -27,7 +27,7 @@ void yaffs_PackTags1(yaffs_PackedTags1 *
+ 
+ }
+ 
+-void yaffs_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt)
++void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt)
+ {
+       static const __u8 allFF[] =
+           { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+@@ -35,9 +35,8 @@ void yaffs_UnpackTags1(yaffs_ExtendedTag
+ 
+       if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) {
+               t->blockBad = 0;
+-              if (pt->shouldBeFF != 0xFFFFFFFF) {
++              if (pt->shouldBeFF != 0xFFFFFFFF)
+                       t->blockBad = 1;
+-              }
+               t->chunkUsed = 1;
+               t->objectId = pt->objectId;
+               t->chunkId = pt->chunkId;
+@@ -47,6 +46,5 @@ void yaffs_UnpackTags1(yaffs_ExtendedTag
+               t->serialNumber = pt->serialNumber;
+       } else {
+               memset(t, 0, sizeof(yaffs_ExtendedTags));
+-
+       }
+ }
+--- a/fs/yaffs2/yaffs_packedtags1.h
++++ b/fs/yaffs2/yaffs_packedtags1.h
+@@ -32,6 +32,6 @@ typedef struct {
+ 
+ } yaffs_PackedTags1;
+ 
+-void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t);
+-void yaffs_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt);
++void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t);
++void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt);
+ #endif
+--- a/fs/yaffs2/yaffs_packedtags2.c
++++ b/fs/yaffs2/yaffs_packedtags2.c
+@@ -37,60 +37,68 @@
+ #define EXTRA_OBJECT_TYPE_SHIFT (28)
+ #define EXTRA_OBJECT_TYPE_MASK  ((0x0F) << EXTRA_OBJECT_TYPE_SHIFT)
+ 
+-static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 * pt)
++
++static void yaffs_DumpPackedTags2TagsPart(const yaffs_PackedTags2TagsPart *ptt)
+ {
+       T(YAFFS_TRACE_MTD,
+         (TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR),
+-         pt->t.objectId, pt->t.chunkId, pt->t.byteCount,
+-         pt->t.sequenceNumber));
++         ptt->objectId, ptt->chunkId, ptt->byteCount,
++         ptt->sequenceNumber));
++}
++static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 *pt)
++{
++      yaffs_DumpPackedTags2TagsPart(&pt->t);
+ }
+ 
+-static void yaffs_DumpTags2(const yaffs_ExtendedTags * t)
++static void yaffs_DumpTags2(const yaffs_ExtendedTags *t)
+ {
+       T(YAFFS_TRACE_MTD,
+         (TSTR
+-         ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte "
+-          "%d del %d ser %d seq %d"
++         ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte %d del %d ser %d seq %d"
+           TENDSTR), t->eccResult, t->blockBad, t->chunkUsed, t->objectId,
+          t->chunkId, t->byteCount, t->chunkDeleted, t->serialNumber,
+          t->sequenceNumber));
+ 
+ }
+ 
+-void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t)
++void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *ptt,
++              const yaffs_ExtendedTags *t)
+ {
+-      pt->t.chunkId = t->chunkId;
+-      pt->t.sequenceNumber = t->sequenceNumber;
+-      pt->t.byteCount = t->byteCount;
+-      pt->t.objectId = t->objectId;
++      ptt->chunkId = t->chunkId;
++      ptt->sequenceNumber = t->sequenceNumber;
++      ptt->byteCount = t->byteCount;
++      ptt->objectId = t->objectId;
+ 
+       if (t->chunkId == 0 && t->extraHeaderInfoAvailable) {
+               /* Store the extra header info instead */
+               /* We save the parent object in the chunkId */
+-              pt->t.chunkId = EXTRA_HEADER_INFO_FLAG
++              ptt->chunkId = EXTRA_HEADER_INFO_FLAG
+                       | t->extraParentObjectId;
+-              if (t->extraIsShrinkHeader) {
+-                      pt->t.chunkId |= EXTRA_SHRINK_FLAG;
+-              }
+-              if (t->extraShadows) {
+-                      pt->t.chunkId |= EXTRA_SHADOWS_FLAG;
+-              }
++              if (t->extraIsShrinkHeader)
++                      ptt->chunkId |= EXTRA_SHRINK_FLAG;
++              if (t->extraShadows)
++                      ptt->chunkId |= EXTRA_SHADOWS_FLAG;
+ 
+-              pt->t.objectId &= ~EXTRA_OBJECT_TYPE_MASK;
+-              pt->t.objectId |=
++              ptt->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
++              ptt->objectId |=
+                   (t->extraObjectType << EXTRA_OBJECT_TYPE_SHIFT);
+ 
+-              if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) {
+-                      pt->t.byteCount = t->extraEquivalentObjectId;
+-              } else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE) {
+-                      pt->t.byteCount = t->extraFileLength;
+-              } else {
+-                      pt->t.byteCount = 0;
+-              }
++              if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK)
++                      ptt->byteCount = t->extraEquivalentObjectId;
++              else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE)
++                      ptt->byteCount = t->extraFileLength;
++              else
++                      ptt->byteCount = 0;
+       }
+ 
+-      yaffs_DumpPackedTags2(pt);
++      yaffs_DumpPackedTags2TagsPart(ptt);
+       yaffs_DumpTags2(t);
++}
++
++
++void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t)
++{
++      yaffs_PackTags2TagsPart(&pt->t, t);
+ 
+ #ifndef YAFFS_IGNORE_TAGS_ECC
+       {
+@@ -101,82 +109,98 @@ void yaffs_PackTags2(yaffs_PackedTags2 *
+ #endif
+ }
+ 
+-void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt)
++
++void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t,
++              yaffs_PackedTags2TagsPart *ptt)
+ {
+ 
+       memset(t, 0, sizeof(yaffs_ExtendedTags));
+ 
+       yaffs_InitialiseTags(t);
+ 
+-      if (pt->t.sequenceNumber != 0xFFFFFFFF) {
+-              /* Page is in use */
+-#ifdef YAFFS_IGNORE_TAGS_ECC
+-              {
+-                      t->eccResult = YAFFS_ECC_RESULT_NO_ERROR;
+-              }
+-#else
+-              {
+-                      yaffs_ECCOther ecc;
+-                      int result;
+-                      yaffs_ECCCalculateOther((unsigned char *)&pt->t,
+-                                              sizeof
+-                                              (yaffs_PackedTags2TagsPart),
+-                                              &ecc);
+-                      result =
+-                          yaffs_ECCCorrectOther((unsigned char *)&pt->t,
+-                                                sizeof
+-                                                (yaffs_PackedTags2TagsPart),
+-                                                &pt->ecc, &ecc);
+-                      switch(result){
+-                              case 0:
+-                                      t->eccResult = YAFFS_ECC_RESULT_NO_ERROR;
+-                                      break;
+-                              case 1:
+-                                      t->eccResult = YAFFS_ECC_RESULT_FIXED;
+-                                      break;
+-                              case -1:
+-                                      t->eccResult = YAFFS_ECC_RESULT_UNFIXED;
+-                                      break;
+-                              default:
+-                                      t->eccResult = YAFFS_ECC_RESULT_UNKNOWN;
+-                      }
+-              }
+-#endif
++      if (ptt->sequenceNumber != 0xFFFFFFFF) {
+               t->blockBad = 0;
+               t->chunkUsed = 1;
+-              t->objectId = pt->t.objectId;
+-              t->chunkId = pt->t.chunkId;
+-              t->byteCount = pt->t.byteCount;
++              t->objectId = ptt->objectId;
++              t->chunkId = ptt->chunkId;
++              t->byteCount = ptt->byteCount;
+               t->chunkDeleted = 0;
+               t->serialNumber = 0;
+-              t->sequenceNumber = pt->t.sequenceNumber;
++              t->sequenceNumber = ptt->sequenceNumber;
+ 
+               /* Do extra header info stuff */
+ 
+-              if (pt->t.chunkId & EXTRA_HEADER_INFO_FLAG) {
++              if (ptt->chunkId & EXTRA_HEADER_INFO_FLAG) {
+                       t->chunkId = 0;
+                       t->byteCount = 0;
+ 
+                       t->extraHeaderInfoAvailable = 1;
+                       t->extraParentObjectId =
+-                          pt->t.chunkId & (~(ALL_EXTRA_FLAGS));
++                          ptt->chunkId & (~(ALL_EXTRA_FLAGS));
+                       t->extraIsShrinkHeader =
+-                          (pt->t.chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0;
++                          (ptt->chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0;
+                       t->extraShadows =
+-                          (pt->t.chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0;
++                          (ptt->chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0;
+                       t->extraObjectType =
+-                          pt->t.objectId >> EXTRA_OBJECT_TYPE_SHIFT;
++                          ptt->objectId >> EXTRA_OBJECT_TYPE_SHIFT;
+                       t->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
+ 
+-                      if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) {
+-                              t->extraEquivalentObjectId = pt->t.byteCount;
+-                      } else {
+-                              t->extraFileLength = pt->t.byteCount;
++                      if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK)
++                              t->extraEquivalentObjectId = ptt->byteCount;
++                      else
++                              t->extraFileLength = ptt->byteCount;
++              }
++      }
++
++      yaffs_DumpPackedTags2TagsPart(ptt);
++      yaffs_DumpTags2(t);
++
++}
++
++
++void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt)
++{
++
++      yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++
++      if (pt->t.sequenceNumber != 0xFFFFFFFF) {
++              /* Page is in use */
++#ifndef YAFFS_IGNORE_TAGS_ECC
++              {
++                      yaffs_ECCOther ecc;
++                      int result;
++                      yaffs_ECCCalculateOther((unsigned char *)&pt->t,
++                                              sizeof
++                                              (yaffs_PackedTags2TagsPart),
++                                              &ecc);
++                      result =
++                          yaffs_ECCCorrectOther((unsigned char *)&pt->t,
++                                                sizeof
++                                                (yaffs_PackedTags2TagsPart),
++                                                &pt->ecc, &ecc);
++                      switch (result) {
++                      case 0:
++                              eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++                              break;
++                      case 1:
++                              eccResult = YAFFS_ECC_RESULT_FIXED;
++                              break;
++                      case -1:
++                              eccResult = YAFFS_ECC_RESULT_UNFIXED;
++                              break;
++                      default:
++                              eccResult = YAFFS_ECC_RESULT_UNKNOWN;
+                       }
+               }
++#endif
+       }
+ 
++      yaffs_UnpackTags2TagsPart(t, &pt->t);
++
++      t->eccResult = eccResult;
++
+       yaffs_DumpPackedTags2(pt);
+       yaffs_DumpTags2(t);
+ 
+ }
++
+--- a/fs/yaffs2/yaffs_packedtags2.h
++++ b/fs/yaffs2/yaffs_packedtags2.h
+@@ -33,6 +33,11 @@ typedef struct {
+       yaffs_ECCOther ecc;
+ } yaffs_PackedTags2;
+ 
+-void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t);
+-void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt);
++/* Full packed tags with ECC, used for oob tags */
++void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t);
++void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt);
++
++/* Only the tags part (no ECC for use with inband tags */
++void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ExtendedTags *t);
++void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t, yaffs_PackedTags2TagsPart *pt);
+ #endif
+--- a/fs/yaffs2/yaffs_qsort.c
++++ b/fs/yaffs2/yaffs_qsort.c
+@@ -28,12 +28,12 @@
+  */
+ 
+ #include "yportenv.h"
+-//#include <linux/string.h>
++/* #include <linux/string.h> */
+ 
+ /*
+  * Qsort routine from Bentley & McIlroy's "Engineering a Sort Function".
+  */
+-#define swapcode(TYPE, parmi, parmj, n) {             \
++#define swapcode(TYPE, parmi, parmj, n) do {          \
+       long i = (n) / sizeof (TYPE);                   \
+       register TYPE *pi = (TYPE *) (parmi);           \
+       register TYPE *pj = (TYPE *) (parmj);           \
+@@ -41,28 +41,29 @@
+               register TYPE   t = *pi;                \
+               *pi++ = *pj;                            \
+               *pj++ = t;                              \
+-        } while (--i > 0);                            \
+-}
++      } while (--i > 0);                              \
++} while (0)
+ 
+ #define SWAPINIT(a, es) swaptype = ((char *)a - (char *)0) % sizeof(long) || \
+-      es % sizeof(long) ? 2 : es == sizeof(long)? 0 : 1;
++      es % sizeof(long) ? 2 : es == sizeof(long) ? 0 : 1;
+ 
+ static __inline void
+ swapfunc(char *a, char *b, int n, int swaptype)
+ {
+       if (swaptype <= 1)
+-              swapcode(long, a, b, n)
++              swapcode(long, a, b, n);
+       else
+-              swapcode(char, a, b, n)
++              swapcode(char, a, b, n);
+ }
+ 
+-#define swap(a, b)                                    \
++#define yswap(a, b) do {                                      \
+       if (swaptype == 0) {                            \
+               long t = *(long *)(a);                  \
+               *(long *)(a) = *(long *)(b);            \
+               *(long *)(b) = t;                       \
+       } else                                          \
+-              swapfunc(a, b, es, swaptype)
++              swapfunc(a, b, es, swaptype);           \
++} while (0)
+ 
+ #define vecswap(a, b, n)      if ((n) > 0) swapfunc(a, b, n, swaptype)
+ 
+@@ -70,12 +71,12 @@ static __inline char *
+ med3(char *a, char *b, char *c, int (*cmp)(const void *, const void *))
+ {
+       return cmp(a, b) < 0 ?
+-             (cmp(b, c) < 0 ? b : (cmp(a, c) < 0 ? c : a ))
+-              :(cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c ));
++              (cmp(b, c) < 0 ? b : (cmp(a, c) < 0 ? c : a))
++              : (cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c));
+ }
+ 
+ #ifndef min
+-#define min(a,b) (((a) < (b)) ? (a) : (b))
++#define min(a, b) (((a) < (b)) ? (a) : (b))
+ #endif
+ 
+ void
+@@ -92,7 +93,7 @@ loop:        SWAPINIT(a, es);
+               for (pm = (char *)a + es; pm < (char *) a + n * es; pm += es)
+                       for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0;
+                            pl -= es)
+-                              swap(pl, pl - es);
++                              yswap(pl, pl - es);
+               return;
+       }
+       pm = (char *)a + (n / 2) * es;
+@@ -107,7 +108,7 @@ loop:      SWAPINIT(a, es);
+               }
+               pm = med3(pl, pm, pn, cmp);
+       }
+-      swap(a, pm);
++      yswap(a, pm);
+       pa = pb = (char *)a + es;
+ 
+       pc = pd = (char *)a + (n - 1) * es;
+@@ -115,7 +116,7 @@ loop:      SWAPINIT(a, es);
+               while (pb <= pc && (r = cmp(pb, a)) <= 0) {
+                       if (r == 0) {
+                               swap_cnt = 1;
+-                              swap(pa, pb);
++                              yswap(pa, pb);
+                               pa += es;
+                       }
+                       pb += es;
+@@ -123,14 +124,14 @@ loop:    SWAPINIT(a, es);
+               while (pb <= pc && (r = cmp(pc, a)) >= 0) {
+                       if (r == 0) {
+                               swap_cnt = 1;
+-                              swap(pc, pd);
++                              yswap(pc, pd);
+                               pd -= es;
+                       }
+                       pc -= es;
+               }
+               if (pb > pc)
+                       break;
+-              swap(pb, pc);
++              yswap(pb, pc);
+               swap_cnt = 1;
+               pb += es;
+               pc -= es;
+@@ -139,7 +140,7 @@ loop:      SWAPINIT(a, es);
+               for (pm = (char *) a + es; pm < (char *) a + n * es; pm += es)
+                       for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0;
+                            pl -= es)
+-                              swap(pl, pl - es);
++                              yswap(pl, pl - es);
+               return;
+       }
+ 
+@@ -148,9 +149,11 @@ loop:     SWAPINIT(a, es);
+       vecswap(a, pb - r, r);
+       r = min((long)(pd - pc), (long)(pn - pd - es));
+       vecswap(pb, pn - r, r);
+-      if ((r = pb - pa) > es)
++      r = pb - pa;
++      if (r > es)
+               yaffs_qsort(a, r / es, es, cmp);
+-      if ((r = pd - pc) > es) {
++      r = pd - pc;
++      if (r > es) {
+               /* Iterate rather than recurse to save stack space */
+               a = pn - r;
+               n = r / es;
+--- a/fs/yaffs2/yaffs_qsort.h
++++ b/fs/yaffs2/yaffs_qsort.h
+@@ -17,7 +17,7 @@
+ #ifndef __YAFFS_QSORT_H__
+ #define __YAFFS_QSORT_H__
+ 
+-extern void yaffs_qsort (void *const base, size_t total_elems, size_t size,
+-                   int (*cmp)(const void *, const void *));
++extern void yaffs_qsort(void *const base, size_t total_elems, size_t size,
++                      int (*cmp)(const void *, const void *));
+ 
+ #endif
+--- a/fs/yaffs2/yaffs_tagscompat.c
++++ b/fs/yaffs2/yaffs_tagscompat.c
+@@ -14,16 +14,17 @@
+ #include "yaffs_guts.h"
+ #include "yaffs_tagscompat.h"
+ #include "yaffs_ecc.h"
++#include "yaffs_getblockinfo.h"
+ 
+-static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND);
++static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND);
+ #ifdef NOTYET
+-static void yaffs_CheckWrittenBlock(yaffs_Device * dev, int chunkInNAND);
+-static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
+-                                   const __u8 * data,
+-                                   const yaffs_Spare * spare);
+-static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
+-                                  const yaffs_Spare * spare);
+-static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND);
++static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND);
++static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
++                                   const __u8 *data,
++                                   const yaffs_Spare *spare);
++static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
++                                  const yaffs_Spare *spare);
++static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND);
+ #endif
+ 
+ static const char yaffs_countBitsTable[256] = {
+@@ -54,13 +55,13 @@ int yaffs_CountBits(__u8 x)
+ 
+ /********** Tags ECC calculations  *********/
+ 
+-void yaffs_CalcECC(const __u8 * data, yaffs_Spare * spare)
++void yaffs_CalcECC(const __u8 *data, yaffs_Spare *spare)
+ {
+       yaffs_ECCCalculate(data, spare->ecc1);
+       yaffs_ECCCalculate(&data[256], spare->ecc2);
+ }
+ 
+-void yaffs_CalcTagsECC(yaffs_Tags * tags)
++void yaffs_CalcTagsECC(yaffs_Tags *tags)
+ {
+       /* Calculate an ecc */
+ 
+@@ -74,9 +75,8 @@ void yaffs_CalcTagsECC(yaffs_Tags * tags
+       for (i = 0; i < 8; i++) {
+               for (j = 1; j & 0xff; j <<= 1) {
+                       bit++;
+-                      if (b[i] & j) {
++                      if (b[i] & j)
+                               ecc ^= bit;
+-                      }
+               }
+       }
+ 
+@@ -84,7 +84,7 @@ void yaffs_CalcTagsECC(yaffs_Tags * tags
+ 
+ }
+ 
+-int yaffs_CheckECCOnTags(yaffs_Tags * tags)
++int yaffs_CheckECCOnTags(yaffs_Tags *tags)
+ {
+       unsigned ecc = tags->ecc;
+ 
+@@ -115,8 +115,8 @@ int yaffs_CheckECCOnTags(yaffs_Tags * ta
+ 
+ /********** Tags **********/
+ 
+-static void yaffs_LoadTagsIntoSpare(yaffs_Spare * sparePtr,
+-                                  yaffs_Tags * tagsPtr)
++static void yaffs_LoadTagsIntoSpare(yaffs_Spare *sparePtr,
++                              yaffs_Tags *tagsPtr)
+ {
+       yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr;
+ 
+@@ -132,8 +132,8 @@ static void yaffs_LoadTagsIntoSpare(yaff
+       sparePtr->tagByte7 = tu->asBytes[7];
+ }
+ 
+-static void yaffs_GetTagsFromSpare(yaffs_Device * dev, yaffs_Spare * sparePtr,
+-                                 yaffs_Tags * tagsPtr)
++static void yaffs_GetTagsFromSpare(yaffs_Device *dev, yaffs_Spare *sparePtr,
++                              yaffs_Tags *tagsPtr)
+ {
+       yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr;
+       int result;
+@@ -148,21 +148,20 @@ static void yaffs_GetTagsFromSpare(yaffs
+       tu->asBytes[7] = sparePtr->tagByte7;
+ 
+       result = yaffs_CheckECCOnTags(tagsPtr);
+-      if (result > 0) {
++      if (result > 0)
+               dev->tagsEccFixed++;
+-      } else if (result < 0) {
++      else if (result < 0)
+               dev->tagsEccUnfixed++;
+-      }
+ }
+ 
+-static void yaffs_SpareInitialise(yaffs_Spare * spare)
++static void yaffs_SpareInitialise(yaffs_Spare *spare)
+ {
+       memset(spare, 0xFF, sizeof(yaffs_Spare));
+ }
+ 
+ static int yaffs_WriteChunkToNAND(struct yaffs_DeviceStruct *dev,
+-                                int chunkInNAND, const __u8 * data,
+-                                yaffs_Spare * spare)
++                              int chunkInNAND, const __u8 *data,
++                              yaffs_Spare *spare)
+ {
+       if (chunkInNAND < dev->startBlock * dev->nChunksPerBlock) {
+               T(YAFFS_TRACE_ERROR,
+@@ -177,9 +176,9 @@ static int yaffs_WriteChunkToNAND(struct
+ 
+ static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev,
+                                  int chunkInNAND,
+-                                 __u8 * data,
+-                                 yaffs_Spare * spare,
+-                                 yaffs_ECCResult * eccResult,
++                                 __u8 *data,
++                                 yaffs_Spare *spare,
++                                 yaffs_ECCResult *eccResult,
+                                  int doErrorCorrection)
+ {
+       int retVal;
+@@ -252,9 +251,11 @@ static int yaffs_ReadChunkFromNAND(struc
+               /* Must allocate enough memory for spare+2*sizeof(int) */
+               /* for ecc results from device. */
+               struct yaffs_NANDSpare nspare;
+-              retVal =
+-                  dev->readChunkFromNAND(dev, chunkInNAND, data,
+-                                         (yaffs_Spare *) & nspare);
++
++              memset(&nspare, 0, sizeof(nspare));
++
++              retVal = dev->readChunkFromNAND(dev, chunkInNAND, data,
++                                      (yaffs_Spare *) &nspare);
+               memcpy(spare, &nspare, sizeof(yaffs_Spare));
+               if (data && doErrorCorrection) {
+                       if (nspare.eccres1 > 0) {
+@@ -302,8 +303,7 @@ static int yaffs_ReadChunkFromNAND(struc
+ static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
+                                 int chunkInNAND)
+ {
+-
+-      static int init = 0;
++      static int init;
+       static __u8 cmpbuf[YAFFS_BYTES_PER_CHUNK];
+       static __u8 data[YAFFS_BYTES_PER_CHUNK];
+       /* Might as well always allocate the larger size for */
+@@ -331,12 +331,12 @@ static int yaffs_CheckChunkErased(struct
+  * Functions for robustisizing
+  */
+ 
+-static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND)
++static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND)
+ {
+       int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
+ 
+       /* Mark the block for retirement */
+-      yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1;
++      yaffs_GetBlockInfo(dev, blockInNAND + dev->blockOffset)->needsRetiring = 1;
+       T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+         (TSTR("**>>Block %d marked for retirement" TENDSTR), blockInNAND));
+ 
+@@ -348,22 +348,22 @@ static void yaffs_HandleReadDataError(ya
+ }
+ 
+ #ifdef NOTYET
+-static void yaffs_CheckWrittenBlock(yaffs_Device * dev, int chunkInNAND)
++static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND)
+ {
+ }
+ 
+-static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
+-                                   const __u8 * data,
+-                                   const yaffs_Spare * spare)
++static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
++                                   const __u8 *data,
++                                   const yaffs_Spare *spare)
+ {
+ }
+ 
+-static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
+-                                  const yaffs_Spare * spare)
++static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
++                                  const yaffs_Spare *spare)
+ {
+ }
+ 
+-static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND)
++static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND)
+ {
+       int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
+ 
+@@ -373,8 +373,8 @@ static void yaffs_HandleWriteChunkError(
+       yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
+ }
+ 
+-static int yaffs_VerifyCompare(const __u8 * d0, const __u8 * d1,
+-                             const yaffs_Spare * s0, const yaffs_Spare * s1)
++static int yaffs_VerifyCompare(const __u8 *d0, const __u8 *d1,
++                             const yaffs_Spare *s0, const yaffs_Spare *s1)
+ {
+ 
+       if (memcmp(d0, d1, YAFFS_BYTES_PER_CHUNK) != 0 ||
+@@ -398,28 +398,35 @@ static int yaffs_VerifyCompare(const __u
+ }
+ #endif                                /* NOTYET */
+ 
+-int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device * dev,
+-                                                  int chunkInNAND,
+-                                                  const __u8 * data,
+-                                                  const yaffs_ExtendedTags *
+-                                                  eTags)
++int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev,
++                                              int chunkInNAND,
++                                              const __u8 *data,
++                                              const yaffs_ExtendedTags *eTags)
+ {
+       yaffs_Spare spare;
+       yaffs_Tags tags;
+ 
+       yaffs_SpareInitialise(&spare);
+ 
+-      if (eTags->chunkDeleted) {
++      if (eTags->chunkDeleted)
+               spare.pageStatus = 0;
+-      } else {
++      else {
+               tags.objectId = eTags->objectId;
+               tags.chunkId = eTags->chunkId;
+-              tags.byteCount = eTags->byteCount;
++
++              tags.byteCountLSB = eTags->byteCount & 0x3ff;
++
++              if (dev->nDataBytesPerChunk >= 1024)
++                      tags.byteCountMSB = (eTags->byteCount >> 10) & 3;
++              else
++                      tags.byteCountMSB = 3;
++
++
+               tags.serialNumber = eTags->serialNumber;
+ 
+-              if (!dev->useNANDECC && data) {
++              if (!dev->useNANDECC && data)
+                       yaffs_CalcECC(data, &spare);
+-              }
++
+               yaffs_LoadTagsIntoSpare(&spare, &tags);
+ 
+       }
+@@ -427,15 +434,15 @@ int yaffs_TagsCompatabilityWriteChunkWit
+       return yaffs_WriteChunkToNAND(dev, chunkInNAND, data, &spare);
+ }
+ 
+-int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device * dev,
++int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev,
+                                                    int chunkInNAND,
+-                                                   __u8 * data,
+-                                                   yaffs_ExtendedTags * eTags)
++                                                   __u8 *data,
++                                                   yaffs_ExtendedTags *eTags)
+ {
+ 
+       yaffs_Spare spare;
+       yaffs_Tags tags;
+-      yaffs_ECCResult eccResult;
++      yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_UNKNOWN;
+ 
+       static yaffs_Spare spareFF;
+       static int init;
+@@ -466,7 +473,11 @@ int yaffs_TagsCompatabilityReadChunkWith
+ 
+                               eTags->objectId = tags.objectId;
+                               eTags->chunkId = tags.chunkId;
+-                              eTags->byteCount = tags.byteCount;
++                              eTags->byteCount = tags.byteCountLSB;
++
++                              if (dev->nDataBytesPerChunk >= 1024)
++                                      eTags->byteCount |= (((unsigned) tags.byteCountMSB) << 10);
++
+                               eTags->serialNumber = tags.serialNumber;
+                       }
+               }
+@@ -497,9 +508,9 @@ int yaffs_TagsCompatabilityMarkNANDBlock
+ }
+ 
+ int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
+-                                        int blockNo, yaffs_BlockState *
+-                                        state,
+-                                        int *sequenceNumber)
++                                        int blockNo,
++                                        yaffs_BlockState *state,
++                                        __u32 *sequenceNumber)
+ {
+ 
+       yaffs_Spare spare0, spare1;
+--- a/fs/yaffs2/yaffs_tagscompat.h
++++ b/fs/yaffs2/yaffs_tagscompat.h
+@@ -17,24 +17,23 @@
+ #define __YAFFS_TAGSCOMPAT_H__
+ 
+ #include "yaffs_guts.h"
+-int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device * dev,
+-                                                  int chunkInNAND,
+-                                                  const __u8 * data,
+-                                                  const yaffs_ExtendedTags *
+-                                                  tags);
+-int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device * dev,
+-                                                   int chunkInNAND,
+-                                                   __u8 * data,
+-                                                   yaffs_ExtendedTags *
+-                                                   tags);
++int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev,
++                                              int chunkInNAND,
++                                              const __u8 *data,
++                                              const yaffs_ExtendedTags *tags);
++int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev,
++                                              int chunkInNAND,
++                                              __u8 *data,
++                                              yaffs_ExtendedTags *tags);
+ int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev,
+                                           int blockNo);
+ int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
+-                                        int blockNo, yaffs_BlockState *
+-                                        state, int *sequenceNumber);
++                                        int blockNo,
++                                        yaffs_BlockState *state,
++                                        __u32 *sequenceNumber);
+ 
+-void yaffs_CalcTagsECC(yaffs_Tags * tags);
+-int yaffs_CheckECCOnTags(yaffs_Tags * tags);
++void yaffs_CalcTagsECC(yaffs_Tags *tags);
++int yaffs_CheckECCOnTags(yaffs_Tags *tags);
+ int yaffs_CountBits(__u8 byte);
+ 
+ #endif
+--- a/fs/yaffs2/yaffs_tagsvalidity.c
++++ b/fs/yaffs2/yaffs_tagsvalidity.c
+@@ -13,14 +13,14 @@
+ 
+ #include "yaffs_tagsvalidity.h"
+ 
+-void yaffs_InitialiseTags(yaffs_ExtendedTags * tags)
++void yaffs_InitialiseTags(yaffs_ExtendedTags *tags)
+ {
+       memset(tags, 0, sizeof(yaffs_ExtendedTags));
+       tags->validMarker0 = 0xAAAAAAAA;
+       tags->validMarker1 = 0x55555555;
+ }
+ 
+-int yaffs_ValidateTags(yaffs_ExtendedTags * tags)
++int yaffs_ValidateTags(yaffs_ExtendedTags *tags)
+ {
+       return (tags->validMarker0 == 0xAAAAAAAA &&
+               tags->validMarker1 == 0x55555555);
+--- a/fs/yaffs2/yaffs_tagsvalidity.h
++++ b/fs/yaffs2/yaffs_tagsvalidity.h
+@@ -19,6 +19,6 @@
+ 
+ #include "yaffs_guts.h"
+ 
+-void yaffs_InitialiseTags(yaffs_ExtendedTags * tags);
+-int yaffs_ValidateTags(yaffs_ExtendedTags * tags);
++void yaffs_InitialiseTags(yaffs_ExtendedTags *tags);
++int yaffs_ValidateTags(yaffs_ExtendedTags *tags);
+ #endif
+--- a/fs/yaffs2/yportenv.h
++++ b/fs/yaffs2/yportenv.h
+@@ -17,17 +17,28 @@
+ #ifndef __YPORTENV_H__
+ #define __YPORTENV_H__
+ 
++/*
++ * Define the MTD version in terms of Linux Kernel versions
++ * This allows yaffs to be used independantly of the kernel
++ * as well as with it.
++ */
++
++#define MTD_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
++
+ #if defined CONFIG_YAFFS_WINCE
+ 
+ #include "ywinceenv.h"
+ 
+-#elif  defined __KERNEL__
++#elif defined __KERNEL__
+ 
+ #include "moduleconfig.h"
+ 
+ /* Linux kernel */
++
+ #include <linux/version.h>
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
++#define MTD_VERSION_CODE LINUX_VERSION_CODE
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
+ #include <linux/config.h>
+ #endif
+ #include <linux/kernel.h>
+@@ -40,12 +51,13 @@
+ #define YCHAR char
+ #define YUCHAR unsigned char
+ #define _Y(x)     x
+-#define yaffs_strcpy(a,b)    strcpy(a,b)
+-#define yaffs_strncpy(a,b,c) strncpy(a,b,c)
+-#define yaffs_strncmp(a,b,c) strncmp(a,b,c)
+-#define yaffs_strlen(s)            strlen(s)
+-#define yaffs_sprintf      sprintf
+-#define yaffs_toupper(a)     toupper(a)
++#define yaffs_strcat(a, b)     strcat(a, b)
++#define yaffs_strcpy(a, b)     strcpy(a, b)
++#define yaffs_strncpy(a, b, c) strncpy(a, b, c)
++#define yaffs_strncmp(a, b, c) strncmp(a, b, c)
++#define yaffs_strlen(s)              strlen(s)
++#define yaffs_sprintf        sprintf
++#define yaffs_toupper(a)       toupper(a)
+ 
+ #define Y_INLINE inline
+ 
+@@ -53,19 +65,19 @@
+ #define YAFFS_LOSTNFOUND_PREFIX               "obj"
+ 
+ /* #define YPRINTF(x) printk x */
+-#define YMALLOC(x) kmalloc(x,GFP_KERNEL)
++#define YMALLOC(x) kmalloc(x, GFP_NOFS)
+ #define YFREE(x)   kfree(x)
+ #define YMALLOC_ALT(x) vmalloc(x)
+ #define YFREE_ALT(x)   vfree(x)
+ #define YMALLOC_DMA(x) YMALLOC(x)
+ 
+-// KR - added for use in scan so processes aren't blocked indefinitely.
++/* KR - added for use in scan so processes aren't blocked indefinitely. */
+ #define YYIELD() schedule()
+ 
+ #define YAFFS_ROOT_MODE                       0666
+ #define YAFFS_LOSTNFOUND_MODE         0666
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ #define Y_CURRENT_TIME CURRENT_TIME.tv_sec
+ #define Y_TIME_CONVERT(x) (x).tv_sec
+ #else
+@@ -73,11 +85,12 @@
+ #define Y_TIME_CONVERT(x) (x)
+ #endif
+ 
+-#define yaffs_SumCompare(x,y) ((x) == (y))
+-#define yaffs_strcmp(a,b) strcmp(a,b)
++#define yaffs_SumCompare(x, y) ((x) == (y))
++#define yaffs_strcmp(a, b) strcmp(a, b)
+ 
+ #define TENDSTR "\n"
+ #define TSTR(x) KERN_WARNING x
++#define TCONT(x) x
+ #define TOUT(p) printk p
+ 
+ #define yaffs_trace(mask, fmt, args...) \
+@@ -90,6 +103,8 @@
+ 
+ #elif defined CONFIG_YAFFS_DIRECT
+ 
++#define MTD_VERSION_CODE MTD_VERSION(2, 6, 22)
++
+ /* Direct interface */
+ #include "ydirectenv.h"
+ 
+@@ -111,11 +126,12 @@
+ #define YCHAR char
+ #define YUCHAR unsigned char
+ #define _Y(x)     x
+-#define yaffs_strcpy(a,b)    strcpy(a,b)
+-#define yaffs_strncpy(a,b,c) strncpy(a,b,c)
+-#define yaffs_strlen(s)            strlen(s)
+-#define yaffs_sprintf      sprintf
+-#define yaffs_toupper(a)     toupper(a)
++#define yaffs_strcat(a, b)     strcat(a, b)
++#define yaffs_strcpy(a, b)     strcpy(a, b)
++#define yaffs_strncpy(a, b, c) strncpy(a, b, c)
++#define yaffs_strlen(s)              strlen(s)
++#define yaffs_sprintf        sprintf
++#define yaffs_toupper(a)       toupper(a)
+ 
+ #define Y_INLINE inline
+ 
+@@ -133,8 +149,8 @@
+ #define YAFFS_ROOT_MODE                               0666
+ #define YAFFS_LOSTNFOUND_MODE         0666
+ 
+-#define yaffs_SumCompare(x,y) ((x) == (y))
+-#define yaffs_strcmp(a,b) strcmp(a,b)
++#define yaffs_SumCompare(x, y) ((x) == (y))
++#define yaffs_strcmp(a, b) strcmp(a, b)
+ 
+ #else
+ /* Should have specified a configuration type */
+@@ -178,10 +194,10 @@ extern unsigned int yaffs_wr_attempts;
+ #define YAFFS_TRACE_ALWAYS            0xF0000000
+ 
+ 
+-#define T(mask,p) do{ if((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p);} while(0)
++#define T(mask, p) do { if ((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0)
+ 
+-#ifndef CONFIG_YAFFS_WINCE
+-#define YBUG() T(YAFFS_TRACE_BUG,(TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),__LINE__))
++#ifndef YBUG
++#define YBUG() do {T(YAFFS_TRACE_BUG, (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR), __LINE__)); } while (0)
+ #endif
+ 
+ #endif

diff --git a/target/linux/generic/patches-3.0/502-yaffs_git_2010_10_20.patch b/target/linux/generic/patches-3.0/502-yaffs_git_2010_10_20.patch
new file mode 100644 (file)
index 0000000..716c193
--- /dev/null
+++ b/target/linux/generic/patches-3.0/502-yaffs_git_2010_10_20.patch
@@ -0,0 +1,27068 @@
+--- a/fs/Kconfig
++++ b/fs/Kconfig
+@@ -35,7 +35,6 @@ source "fs/gfs2/Kconfig"
+ source "fs/ocfs2/Kconfig"
+ source "fs/btrfs/Kconfig"
+ source "fs/nilfs2/Kconfig"
+-source "fs/yaffs2/Kconfig"
+ 
+ endif # BLOCK
+ 
+@@ -194,6 +193,10 @@ source "fs/hfsplus/Kconfig"
+ source "fs/befs/Kconfig"
+ source "fs/bfs/Kconfig"
+ source "fs/efs/Kconfig"
++
++# Patched by YAFFS
++source "fs/yaffs2/Kconfig"
++
+ source "fs/jffs2/Kconfig"
+ # UBIFS File system configuration
+ source "fs/ubifs/Kconfig"
+--- a/fs/Makefile
++++ b/fs/Makefile
+@@ -125,5 +125,6 @@ obj-$(CONFIG_GFS2_FS)           += gfs2/
+ obj-$(CONFIG_EXOFS_FS)          += exofs/
+ obj-$(CONFIG_CEPH_FS)         += ceph/
+ obj-$(CONFIG_PSTORE)          += pstore/
+-obj-$(CONFIG_YAFFS_FS)                += yaffs2/
+ 
++# Patched by YAFFS
++obj-$(CONFIG_YAFFS_FS)                += yaffs2/
+--- a/fs/yaffs2/devextras.h
++++ b/fs/yaffs2/devextras.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -24,6 +24,8 @@
+ #define __EXTRAS_H__
+ 
+ 
++#include "yportenv.h"
++
+ #if !(defined __KERNEL__)
+ 
+ /* Definition of types */
+@@ -33,103 +35,6 @@ typedef unsigned __u32;
+ 
+ #endif
+ 
+-/*
+- * This is a simple doubly linked list implementation that matches the
+- * way the Linux kernel doubly linked list implementation works.
+- */
+-
+-struct ylist_head {
+-      struct ylist_head *next; /* next in chain */
+-      struct ylist_head *prev; /* previous in chain */
+-};
+-
+-
+-/* Initialise a static list */
+-#define YLIST_HEAD(name) \
+-struct ylist_head name = { &(name), &(name)}
+-
+-
+-
+-/* Initialise a list head to an empty list */
+-#define YINIT_LIST_HEAD(p) \
+-do { \
+-      (p)->next = (p);\
+-      (p)->prev = (p); \
+-} while (0)
+-
+-
+-/* Add an element to a list */
+-static __inline__ void ylist_add(struct ylist_head *newEntry,
+-                              struct ylist_head *list)
+-{
+-      struct ylist_head *listNext = list->next;
+-
+-      list->next = newEntry;
+-      newEntry->prev = list;
+-      newEntry->next = listNext;
+-      listNext->prev = newEntry;
+-
+-}
+-
+-static __inline__ void ylist_add_tail(struct ylist_head *newEntry,
+-                               struct ylist_head *list)
+-{
+-      struct ylist_head *listPrev = list->prev;
+-
+-      list->prev = newEntry;
+-      newEntry->next = list;
+-      newEntry->prev = listPrev;
+-      listPrev->next = newEntry;
+-
+-}
+-
+-
+-/* Take an element out of its current list, with or without
+- * reinitialising the links.of the entry*/
+-static __inline__ void ylist_del(struct ylist_head *entry)
+-{
+-      struct ylist_head *listNext = entry->next;
+-      struct ylist_head *listPrev = entry->prev;
+-
+-      listNext->prev = listPrev;
+-      listPrev->next = listNext;
+-
+-}
+-
+-static __inline__ void ylist_del_init(struct ylist_head *entry)
+-{
+-      ylist_del(entry);
+-      entry->next = entry->prev = entry;
+-}
+-
+-
+-/* Test if the list is empty */
+-static __inline__ int ylist_empty(struct ylist_head *entry)
+-{
+-      return (entry->next == entry);
+-}
+-
+-
+-/* ylist_entry takes a pointer to a list entry and offsets it to that
+- * we can find a pointer to the object it is embedded in.
+- */
+-
+-
+-#define ylist_entry(entry, type, member) \
+-      ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member)))
+-
+-
+-/* ylist_for_each and list_for_each_safe  iterate over lists.
+- * ylist_for_each_safe uses temporary storage to make the list delete safe
+- */
+-
+-#define ylist_for_each(itervar, list) \
+-      for (itervar = (list)->next; itervar != (list); itervar = itervar->next)
+-
+-#define ylist_for_each_safe(itervar, saveVar, list) \
+-      for (itervar = (list)->next, saveVar = (list)->next->next; \
+-              itervar != (list); itervar = saveVar, saveVar = saveVar->next)
+-
+ 
+ #if !(defined __KERNEL__)
+ 
+--- a/fs/yaffs2/Kconfig
++++ b/fs/yaffs2/Kconfig
+@@ -90,23 +90,15 @@ config YAFFS_AUTO_YAFFS2
+ 
+         If unsure, say Y.
+ 
+-config YAFFS_DISABLE_LAZY_LOAD
+-      bool "Disable lazy loading"
+-      depends on YAFFS_YAFFS2
++config YAFFS_DISABLE_TAGS_ECC
++      bool "Disable YAFFS from doing ECC on tags by default"
++      depends on YAFFS_FS && YAFFS_YAFFS2
+       default n
+       help
+-        "Lazy loading" defers loading file details until they are
+-        required. This saves mount time, but makes the first look-up
+-        a bit longer.
+-
+-        Lazy loading will only happen if enabled by this option being 'n'
+-        and if the appropriate tags are available, else yaffs2 will
+-        automatically fall back to immediate loading and do the right
+-        thing.
+-
+-        Lazy laoding will be required by checkpointing.
+-
+-        Setting this to 'y' will disable lazy loading.
++        This defaults Yaffs to using its own ECC calculations on tags instead of
++        just relying on the MTD.
++        This behavior can also be overridden with tags_ecc_on and
++        tags_ecc_off mount options.
+ 
+         If unsure, say N.
+ 
+@@ -154,3 +146,45 @@ config YAFFS_SHORT_NAMES_IN_RAM
+         but makes look-ups faster.
+ 
+         If unsure, say Y.
++
++config YAFFS_EMPTY_LOST_AND_FOUND
++      bool "Empty lost and found on boot"
++      depends on YAFFS_FS
++      default n
++      help
++        If this is enabled then the contents of lost and found is
++        automatically dumped at mount.
++
++        If unsure, say N.
++
++config YAFFS_DISABLE_BLOCK_REFRESHING
++      bool "Disable yaffs2 block refreshing"
++      depends on YAFFS_FS
++      default n
++      help
++       If this is set, then block refreshing is disabled.
++       Block refreshing infrequently refreshes the oldest block in
++       a yaffs2 file system. This mechanism helps to refresh flash to
++       mitigate against data loss. This is particularly useful for MLC.
++
++        If unsure, say N.
++
++config YAFFS_DISABLE_BACKGROUND
++      bool "Disable yaffs2 background processing"
++      depends on YAFFS_FS
++      default n
++      help
++       If this is set, then background processing is disabled.
++       Background processing makes many foreground activities faster.
++
++        If unsure, say N.
++
++config YAFFS_XATTR
++      bool "Enable yaffs2 xattr support"
++      depends on YAFFS_FS
++      default y
++      help
++       If this is set then yaffs2 will provide xattr support.
++       If unsure, say Y.
++
++
+--- a/fs/yaffs2/Makefile
++++ b/fs/yaffs2/Makefile
+@@ -4,7 +4,14 @@
+ 
+ obj-$(CONFIG_YAFFS_FS) += yaffs.o
+ 
+-yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o
+-yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o
++yaffs-y := yaffs_ecc.o yaffs_vfs_glue.o yaffs_guts.o yaffs_checkptrw.o
++yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o
+ yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o
+ yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o
++yaffs-y += yaffs_nameval.o
++yaffs-y += yaffs_allocator.o
++yaffs-y += yaffs_yaffs1.o
++yaffs-y += yaffs_yaffs2.o
++yaffs-y += yaffs_bitmap.o
++yaffs-y += yaffs_verify.o
++
+--- a/fs/yaffs2/moduleconfig.h
++++ b/fs/yaffs2/moduleconfig.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Martin Fouts <Martin.Fouts@palmsource.com>
+@@ -29,25 +29,46 @@
+ /* Meaning: Yaffs does its own ECC, rather than using MTD ECC */
+ /* #define CONFIG_YAFFS_DOES_ECC */
+ 
++/* Default: Selected */
++/* Meaning: Yaffs does its own ECC on tags for packed tags rather than use mtd */
++#define CONFIG_YAFFS_DOES_TAGS_ECC
++
+ /* Default: Not selected */
+ /* Meaning: ECC byte order is 'wrong'.  Only meaningful if */
+ /*          CONFIG_YAFFS_DOES_ECC is set */
+ /* #define CONFIG_YAFFS_ECC_WRONG_ORDER */
+ 
+-/* Default: Selected */
+-/* Meaning: Disables testing whether chunks are erased before writing to them*/
+-#define CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK
++/* Default: Not selected */
++/* Meaning: Always test whether chunks are erased before writing to them.
++          Use during mtd debugging and init. */
++/* #define CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED */
++
++/* Default: Not Selected */
++/* Meaning: At mount automatically empty all files from lost and found. */
++/* This is done to fix an old problem where rmdir was not checking for an */
++/* empty directory. This can also be achieved with a mount option. */
++#define CONFIG_YAFFS_EMPTY_LOST_AND_FOUND
+ 
+ /* Default: Selected */
+ /* Meaning: Cache short names, taking more RAM, but faster look-ups */
+ #define CONFIG_YAFFS_SHORT_NAMES_IN_RAM
+ 
+-/* Default: 10 */
+-/* Meaning: set the count of blocks to reserve for checkpointing */
+-#define CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS 10
++/* Default: Unselected */
++/* Meaning: Select to disable block refreshing. */
++/* Block Refreshing periodically rewrites the oldest block. */
++/* #define CONFIG_DISABLE_BLOCK_REFRESHING */
++
++/* Default: Unselected */
++/* Meaning: Select to disable background processing */
++/* #define CONFIG_DISABLE_BACKGROUND */
++
++
++/* Default: Selected */
++/* Meaning: Enable XATTR support */
++#define CONFIG_YAFFS_XATTR
+ 
+ /*
+-Older-style on-NAND data format has a "pageStatus" byte to record
++Older-style on-NAND data format has a "page_status" byte to record
+ chunk/page state.  This byte is zeroed when the page is discarded.
+ Choose this option if you have existing on-NAND data in this format
+ that you need to continue to support.  New data written also uses the
+@@ -57,7 +78,7 @@ adjusted to use the older-style format.
+ MTD versions in yaffs_mtdif1.c.
+ */
+ /* Default: Not selected */
+-/* Meaning: Use older-style on-NAND data format with pageStatus byte */
++/* Meaning: Use older-style on-NAND data format with page_status byte */
+ /* #define CONFIG_YAFFS_9BYTE_TAGS */
+ 
+ #endif /* YAFFS_OUT_OF_TREE */
+--- /dev/null
++++ b/fs/yaffs2/yaffs_allocator.c
+@@ -0,0 +1,409 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++
++#include "yaffs_allocator.h"
++#include "yaffs_guts.h"
++#include "yaffs_trace.h"
++#include "yportenv.h"
++
++#ifdef CONFIG_YAFFS_YMALLOC_ALLOCATOR
++
++void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev)
++{
++      dev = dev;
++}
++
++void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev)
++{
++      dev = dev;
++}
++
++yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev)
++{
++      return (yaffs_tnode_t *)YMALLOC(dev->tnode_size);
++}
++
++void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
++{
++      dev = dev;
++      YFREE(tn);
++}
++
++void yaffs_init_raw_objs(yaffs_dev_t *dev)
++{
++      dev = dev;
++}
++
++void yaffs_deinit_raw_objs(yaffs_dev_t *dev)
++{
++      dev = dev;
++}
++
++yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev)
++{
++      dev = dev;
++      return (yaffs_obj_t *) YMALLOC(sizeof(yaffs_obj_t));
++}
++
++
++void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj)
++{
++
++      dev = dev;
++      YFREE(obj);
++}
++
++#else
++
++struct yaffs_tnode_list {
++      struct yaffs_tnode_list *next;
++      yaffs_tnode_t *tnodes;
++};
++
++typedef struct yaffs_tnode_list yaffs_tnodelist_t;
++
++struct yaffs_obj_tList_struct {
++      yaffs_obj_t *objects;
++      struct yaffs_obj_tList_struct *next;
++};
++
++typedef struct yaffs_obj_tList_struct yaffs_obj_tList;
++
++
++struct yaffs_AllocatorStruct {
++      int n_tnodesCreated;
++      yaffs_tnode_t *freeTnodes;
++      int nFreeTnodes;
++      yaffs_tnodelist_t *allocatedTnodeList;
++
++      int n_objCreated;
++      yaffs_obj_t *freeObjects;
++      int nFreeObjects;
++
++      yaffs_obj_tList *allocatedObjectList;
++};
++
++typedef struct yaffs_AllocatorStruct yaffs_Allocator;
++
++
++static void yaffs_deinit_raw_tnodes(yaffs_dev_t *dev)
++{
++
++      yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
++
++      yaffs_tnodelist_t *tmp;
++
++      if(!allocator){
++              YBUG();
++              return;
++      }
++
++      while (allocator->allocatedTnodeList) {
++              tmp = allocator->allocatedTnodeList->next;
++
++              YFREE(allocator->allocatedTnodeList->tnodes);
++              YFREE(allocator->allocatedTnodeList);
++              allocator->allocatedTnodeList = tmp;
++
++      }
++
++      allocator->freeTnodes = NULL;
++      allocator->nFreeTnodes = 0;
++      allocator->n_tnodesCreated = 0;
++}
++
++static void yaffs_init_raw_tnodes(yaffs_dev_t *dev)
++{
++      yaffs_Allocator *allocator = dev->allocator;
++
++      if(allocator){
++              allocator->allocatedTnodeList = NULL;
++              allocator->freeTnodes = NULL;
++              allocator->nFreeTnodes = 0;
++              allocator->n_tnodesCreated = 0;
++      } else
++              YBUG();
++}
++
++static int yaffs_create_tnodes(yaffs_dev_t *dev, int n_tnodes)
++{
++      yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
++      int i;
++      yaffs_tnode_t *newTnodes;
++      __u8 *mem;
++      yaffs_tnode_t *curr;
++      yaffs_tnode_t *next;
++      yaffs_tnodelist_t *tnl;
++
++      if(!allocator){
++              YBUG();
++              return YAFFS_FAIL;
++      }
++
++      if (n_tnodes < 1)
++              return YAFFS_OK;
++
++
++      /* make these things */
++
++      newTnodes = YMALLOC(n_tnodes * dev->tnode_size);
++      mem = (__u8 *)newTnodes;
++
++      if (!newTnodes) {
++              T(YAFFS_TRACE_ERROR,
++                      (TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
++              return YAFFS_FAIL;
++      }
++
++      /* New hookup for wide tnodes */
++      for (i = 0; i < n_tnodes - 1; i++) {
++              curr = (yaffs_tnode_t *) &mem[i * dev->tnode_size];
++              next = (yaffs_tnode_t *) &mem[(i+1) * dev->tnode_size];
++              curr->internal[0] = next;
++      }
++
++      curr = (yaffs_tnode_t *) &mem[(n_tnodes - 1) * dev->tnode_size];
++      curr->internal[0] = allocator->freeTnodes;
++      allocator->freeTnodes = (yaffs_tnode_t *)mem;
++
++      allocator->nFreeTnodes += n_tnodes;
++      allocator->n_tnodesCreated += n_tnodes;
++
++      /* Now add this bunch of tnodes to a list for freeing up.
++       * NB If we can't add this to the management list it isn't fatal
++       * but it just means we can't free this bunch of tnodes later.
++       */
++
++      tnl = YMALLOC(sizeof(yaffs_tnodelist_t));
++      if (!tnl) {
++              T(YAFFS_TRACE_ERROR,
++                (TSTR
++                 ("yaffs: Could not add tnodes to management list" TENDSTR)));
++                 return YAFFS_FAIL;
++      } else {
++              tnl->tnodes = newTnodes;
++              tnl->next = allocator->allocatedTnodeList;
++              allocator->allocatedTnodeList = tnl;
++      }
++
++      T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR)));
++
++      return YAFFS_OK;
++}
++
++
++yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev)
++{
++      yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
++      yaffs_tnode_t *tn = NULL;
++
++      if(!allocator){
++              YBUG();
++              return NULL;
++      }
++
++      /* If there are none left make more */
++      if (!allocator->freeTnodes)
++              yaffs_create_tnodes(dev, YAFFS_ALLOCATION_NTNODES);
++
++      if (allocator->freeTnodes) {
++              tn = allocator->freeTnodes;
++              allocator->freeTnodes = allocator->freeTnodes->internal[0];
++              allocator->nFreeTnodes--;
++      }
++
++      return tn;
++}
++
++/* FreeTnode frees up a tnode and puts it back on the free list */
++void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
++{
++      yaffs_Allocator *allocator = dev->allocator;
++
++      if(!allocator){
++              YBUG();
++              return;
++      }
++
++      if (tn) {
++              tn->internal[0] = allocator->freeTnodes;
++              allocator->freeTnodes = tn;
++              allocator->nFreeTnodes++;
++      }
++      dev->checkpoint_blocks_required = 0; /* force recalculation*/
++}
++
++
++
++static void yaffs_init_raw_objs(yaffs_dev_t *dev)
++{
++      yaffs_Allocator *allocator = dev->allocator;
++
++      if(allocator) {
++              allocator->allocatedObjectList = NULL;
++              allocator->freeObjects = NULL;
++              allocator->nFreeObjects = 0;
++      } else
++              YBUG();
++}
++
++static void yaffs_deinit_raw_objs(yaffs_dev_t *dev)
++{
++      yaffs_Allocator *allocator = dev->allocator;
++      yaffs_obj_tList *tmp;
++
++      if(!allocator){
++              YBUG();
++              return;
++      }
++
++      while (allocator->allocatedObjectList) {
++              tmp = allocator->allocatedObjectList->next;
++              YFREE(allocator->allocatedObjectList->objects);
++              YFREE(allocator->allocatedObjectList);
++
++              allocator->allocatedObjectList = tmp;
++      }
++
++      allocator->freeObjects = NULL;
++      allocator->nFreeObjects = 0;
++      allocator->n_objCreated = 0;
++}
++
++
++static int yaffs_create_free_objs(yaffs_dev_t *dev, int n_obj)
++{
++      yaffs_Allocator *allocator = dev->allocator;
++
++      int i;
++      yaffs_obj_t *newObjects;
++      yaffs_obj_tList *list;
++
++      if(!allocator){
++              YBUG();
++              return YAFFS_FAIL;
++      }
++
++      if (n_obj < 1)
++              return YAFFS_OK;
++
++      /* make these things */
++      newObjects = YMALLOC(n_obj * sizeof(yaffs_obj_t));
++      list = YMALLOC(sizeof(yaffs_obj_tList));
++
++      if (!newObjects || !list) {
++              if (newObjects){
++                      YFREE(newObjects);
++                      newObjects = NULL;
++              }
++              if (list){
++                      YFREE(list);
++                      list = NULL;
++              }
++              T(YAFFS_TRACE_ALLOCATE,
++                (TSTR("yaffs: Could not allocate more objects" TENDSTR)));
++              return YAFFS_FAIL;
++      }
++
++      /* Hook them into the free list */
++      for (i = 0; i < n_obj - 1; i++) {
++              newObjects[i].siblings.next =
++                              (struct ylist_head *)(&newObjects[i + 1]);
++      }
++
++      newObjects[n_obj - 1].siblings.next = (void *)allocator->freeObjects;
++      allocator->freeObjects = newObjects;
++      allocator->nFreeObjects += n_obj;
++      allocator->n_objCreated += n_obj;
++
++      /* Now add this bunch of Objects to a list for freeing up. */
++
++      list->objects = newObjects;
++      list->next = allocator->allocatedObjectList;
++      allocator->allocatedObjectList = list;
++
++      return YAFFS_OK;
++}
++
++yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev)
++{
++      yaffs_obj_t *obj = NULL;
++      yaffs_Allocator *allocator = dev->allocator;
++
++      if(!allocator) {
++              YBUG();
++              return obj;
++      }
++
++      /* If there are none left make more */
++      if (!allocator->freeObjects)
++              yaffs_create_free_objs(dev, YAFFS_ALLOCATION_NOBJECTS);
++
++      if (allocator->freeObjects) {
++              obj = allocator->freeObjects;
++              allocator->freeObjects =
++                      (yaffs_obj_t *) (allocator->freeObjects->siblings.next);
++              allocator->nFreeObjects--;
++      }
++
++      return obj;
++}
++
++
++void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj)
++{
++
++      yaffs_Allocator *allocator = dev->allocator;
++
++      if(!allocator)
++              YBUG();
++      else {
++              /* Link into the free list. */
++              obj->siblings.next = (struct ylist_head *)(allocator->freeObjects);
++              allocator->freeObjects = obj;
++              allocator->nFreeObjects++;
++      }
++}
++
++void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev)
++{
++      if(dev->allocator){
++              yaffs_deinit_raw_tnodes(dev);
++              yaffs_deinit_raw_objs(dev);
++
++              YFREE(dev->allocator);
++              dev->allocator=NULL;
++      } else
++              YBUG();
++}
++
++void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev)
++{
++      yaffs_Allocator *allocator;
++
++      if(!dev->allocator){
++              allocator = YMALLOC(sizeof(yaffs_Allocator));
++              if(allocator){
++                      dev->allocator = allocator;
++                      yaffs_init_raw_tnodes(dev);
++                      yaffs_init_raw_objs(dev);
++              }
++      } else
++              YBUG();
++}
++
++
++#endif
+--- /dev/null
++++ b/fs/yaffs2/yaffs_allocator.h
+@@ -0,0 +1,30 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_ALLOCATOR_H__
++#define __YAFFS_ALLOCATOR_H__
++
++#include "yaffs_guts.h"
++
++void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev);
++void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev);
++
++yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev);
++void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn);
++
++yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev);
++void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj);
++
++#endif
+--- /dev/null
++++ b/fs/yaffs2/yaffs_bitmap.c
+@@ -0,0 +1,105 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include "yaffs_bitmap.h"
++#include "yaffs_trace.h"
++/*
++ * Chunk bitmap manipulations
++ */
++
++static Y_INLINE __u8 *yaffs_BlockBits(yaffs_dev_t *dev, int blk)
++{
++      if (blk < dev->internal_start_block || blk > dev->internal_end_block) {
++              T(YAFFS_TRACE_ERROR,
++                      (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR),
++                      blk));
++              YBUG();
++      }
++      return dev->chunk_bits +
++              (dev->chunk_bit_stride * (blk - dev->internal_start_block));
++}
++
++void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk)
++{
++      if (blk < dev->internal_start_block || blk > dev->internal_end_block ||
++                      chunk < 0 || chunk >= dev->param.chunks_per_block) {
++              T(YAFFS_TRACE_ERROR,
++              (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),
++                      blk, chunk));
++              YBUG();
++      }
++}
++
++void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk)
++{
++      __u8 *blkBits = yaffs_BlockBits(dev, blk);
++
++      memset(blkBits, 0, dev->chunk_bit_stride);
++}
++
++void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk)
++{
++      __u8 *blkBits = yaffs_BlockBits(dev, blk);
++
++      yaffs_verify_chunk_bit_id(dev, blk, chunk);
++
++      blkBits[chunk / 8] &= ~(1 << (chunk & 7));
++}
++
++void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk)
++{
++      __u8 *blkBits = yaffs_BlockBits(dev, blk);
++
++      yaffs_verify_chunk_bit_id(dev, blk, chunk);
++
++      blkBits[chunk / 8] |= (1 << (chunk & 7));
++}
++
++int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk)
++{
++      __u8 *blkBits = yaffs_BlockBits(dev, blk);
++      yaffs_verify_chunk_bit_id(dev, blk, chunk);
++
++      return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0;
++}
++
++int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk)
++{
++      __u8 *blkBits = yaffs_BlockBits(dev, blk);
++      int i;
++      for (i = 0; i < dev->chunk_bit_stride; i++) {
++              if (*blkBits)
++                      return 1;
++              blkBits++;
++      }
++      return 0;
++}
++
++int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk)
++{
++      __u8 *blkBits = yaffs_BlockBits(dev, blk);
++      int i;
++      int n = 0;
++      for (i = 0; i < dev->chunk_bit_stride; i++) {
++              __u8 x = *blkBits;
++              while (x) {
++                      if (x & 1)
++                              n++;
++                      x >>= 1;
++              }
++
++              blkBits++;
++      }
++      return n;
++}
++
+--- /dev/null
++++ b/fs/yaffs2/yaffs_bitmap.h
+@@ -0,0 +1,31 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/*
++ * Chunk bitmap manipulations
++ */
++
++#ifndef __YAFFS_BITMAP_H__
++#define __YAFFS_BITMAP_H__
++
++#include "yaffs_guts.h"
++
++void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk);
++void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk);
++void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk);
++void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk);
++int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk);
++int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk);
++int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk);
++
++#endif
+--- a/fs/yaffs2/yaffs_checkptrw.c
++++ b/fs/yaffs2/yaffs_checkptrw.c
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -11,16 +11,12 @@
+  * published by the Free Software Foundation.
+  */
+ 
+-const char *yaffs_checkptrw_c_version =
+-      "$Id: yaffs_checkptrw.c,v 1.18 2009-03-06 17:20:49 wookey Exp $";
+-
+-
+ #include "yaffs_checkptrw.h"
+ #include "yaffs_getblockinfo.h"
+ 
+-static int yaffs_CheckpointSpaceOk(yaffs_Device *dev)
++static int yaffs2_checkpt_space_ok(yaffs_dev_t *dev)
+ {
+-      int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
++      int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks;
+ 
+       T(YAFFS_TRACE_CHECKPOINT,
+               (TSTR("checkpt blocks available = %d" TENDSTR),
+@@ -30,53 +26,56 @@ static int yaffs_CheckpointSpaceOk(yaffs
+ }
+ 
+ 
+-static int yaffs_CheckpointErase(yaffs_Device *dev)
++static int yaffs_checkpt_erase(yaffs_dev_t *dev)
+ {
+       int i;
+ 
+-      if (!dev->eraseBlockInNAND)
++      if (!dev->param.erase_fn)
+               return 0;
+       T(YAFFS_TRACE_CHECKPOINT, (TSTR("checking blocks %d to %d"TENDSTR),
+-              dev->internalStartBlock, dev->internalEndBlock));
++              dev->internal_start_block, dev->internal_end_block));
+ 
+-      for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
+-              yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
+-              if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) {
++      for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
++              yaffs_block_info_t *bi = yaffs_get_block_info(dev, i);
++              if (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT) {
+                       T(YAFFS_TRACE_CHECKPOINT, (TSTR("erasing checkpt block %d"TENDSTR), i));
+-                      if (dev->eraseBlockInNAND(dev, i - dev->blockOffset /* realign */)) {
+-                              bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
+-                              dev->nErasedBlocks++;
+-                              dev->nFreeChunks += dev->nChunksPerBlock;
++
++                      dev->n_erasures++;
++
++                      if (dev->param.erase_fn(dev, i - dev->block_offset /* realign */)) {
++                              bi->block_state = YAFFS_BLOCK_STATE_EMPTY;
++                              dev->n_erased_blocks++;
++                              dev->n_free_chunks += dev->param.chunks_per_block;
+                       } else {
+-                              dev->markNANDBlockBad(dev, i);
+-                              bi->blockState = YAFFS_BLOCK_STATE_DEAD;
++                              dev->param.bad_block_fn(dev, i);
++                              bi->block_state = YAFFS_BLOCK_STATE_DEAD;
+                       }
+               }
+       }
+ 
+-      dev->blocksInCheckpoint = 0;
++      dev->blocks_in_checkpt = 0;
+ 
+       return 1;
+ }
+ 
+ 
+-static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev)
++static void yaffs2_checkpt_find_erased_block(yaffs_dev_t *dev)
+ {
+       int  i;
+-      int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
++      int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks;
+       T(YAFFS_TRACE_CHECKPOINT,
+               (TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR),
+-              dev->nErasedBlocks, dev->nReservedBlocks, blocksAvailable, dev->checkpointNextBlock));
++              dev->n_erased_blocks, dev->param.n_reserved_blocks, blocksAvailable, dev->checkpt_next_block));
+ 
+-      if (dev->checkpointNextBlock >= 0 &&
+-                      dev->checkpointNextBlock <= dev->internalEndBlock &&
++      if (dev->checkpt_next_block >= 0 &&
++                      dev->checkpt_next_block <= dev->internal_end_block &&
+                       blocksAvailable > 0) {
+ 
+-              for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) {
+-                      yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
+-                      if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) {
+-                              dev->checkpointNextBlock = i + 1;
+-                              dev->checkpointCurrentBlock = i;
++              for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) {
++                      yaffs_block_info_t *bi = yaffs_get_block_info(dev, i);
++                      if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) {
++                              dev->checkpt_next_block = i + 1;
++                              dev->checkpt_cur_block = i;
+                               T(YAFFS_TRACE_CHECKPOINT, (TSTR("allocating checkpt block %d"TENDSTR), i));
+                               return;
+                       }
+@@ -84,34 +83,34 @@ static void yaffs_CheckpointFindNextEras
+       }
+       T(YAFFS_TRACE_CHECKPOINT, (TSTR("out of checkpt blocks"TENDSTR)));
+ 
+-      dev->checkpointNextBlock = -1;
+-      dev->checkpointCurrentBlock = -1;
++      dev->checkpt_next_block = -1;
++      dev->checkpt_cur_block = -1;
+ }
+ 
+-static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev)
++static void yaffs2_checkpt_find_block(yaffs_dev_t *dev)
+ {
+       int  i;
+-      yaffs_ExtendedTags tags;
++      yaffs_ext_tags tags;
+ 
+       T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: start:  blocks %d next %d" TENDSTR),
+-              dev->blocksInCheckpoint, dev->checkpointNextBlock));
++              dev->blocks_in_checkpt, dev->checkpt_next_block));
+ 
+-      if (dev->blocksInCheckpoint < dev->checkpointMaxBlocks)
+-              for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) {
+-                      int chunk = i * dev->nChunksPerBlock;
+-                      int realignedChunk = chunk - dev->chunkOffset;
++      if (dev->blocks_in_checkpt < dev->checkpt_max_blocks)
++              for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) {
++                      int chunk = i * dev->param.chunks_per_block;
++                      int realignedChunk = chunk - dev->chunk_offset;
+ 
+-                      dev->readChunkWithTagsFromNAND(dev, realignedChunk,
++                      dev->param.read_chunk_tags_fn(dev, realignedChunk,
+                                       NULL, &tags);
+                       T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR),
+-                              i, tags.objectId, tags.sequenceNumber, tags.eccResult));
++                              i, tags.obj_id, tags.seq_number, tags.ecc_result));
+ 
+-                      if (tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) {
++                      if (tags.seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA) {
+                               /* Right kind of block */
+-                              dev->checkpointNextBlock = tags.objectId;
+-                              dev->checkpointCurrentBlock = i;
+-                              dev->checkpointBlockList[dev->blocksInCheckpoint] = i;
+-                              dev->blocksInCheckpoint++;
++                              dev->checkpt_next_block = tags.obj_id;
++                              dev->checkpt_cur_block = i;
++                              dev->checkpt_block_list[dev->blocks_in_checkpt] = i;
++                              dev->blocks_in_checkpt++;
+                               T(YAFFS_TRACE_CHECKPOINT, (TSTR("found checkpt block %d"TENDSTR), i));
+                               return;
+                       }
+@@ -119,122 +118,127 @@ static void yaffs_CheckpointFindNextChec
+ 
+       T(YAFFS_TRACE_CHECKPOINT, (TSTR("found no more checkpt blocks"TENDSTR)));
+ 
+-      dev->checkpointNextBlock = -1;
+-      dev->checkpointCurrentBlock = -1;
++      dev->checkpt_next_block = -1;
++      dev->checkpt_cur_block = -1;
+ }
+ 
+ 
+-int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting)
++int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting)
+ {
+ 
++
++      dev->checkpt_open_write = forWriting;
++
+       /* Got the functions we need? */
+-      if (!dev->writeChunkWithTagsToNAND ||
+-                      !dev->readChunkWithTagsFromNAND ||
+-                      !dev->eraseBlockInNAND ||
+-                      !dev->markNANDBlockBad)
++      if (!dev->param.write_chunk_tags_fn ||
++              !dev->param.read_chunk_tags_fn ||
++              !dev->param.erase_fn ||
++              !dev->param.bad_block_fn)
+               return 0;
+ 
+-      if (forWriting && !yaffs_CheckpointSpaceOk(dev))
++      if (forWriting && !yaffs2_checkpt_space_ok(dev))
+               return 0;
+ 
+-      if (!dev->checkpointBuffer)
+-              dev->checkpointBuffer = YMALLOC_DMA(dev->totalBytesPerChunk);
+-      if (!dev->checkpointBuffer)
++      if (!dev->checkpt_buffer)
++              dev->checkpt_buffer = YMALLOC_DMA(dev->param.total_bytes_per_chunk);
++      if (!dev->checkpt_buffer)
+               return 0;
+ 
+ 
+-      dev->checkpointPageSequence = 0;
+-
+-      dev->checkpointOpenForWrite = forWriting;
+-
+-      dev->checkpointByteCount = 0;
+-      dev->checkpointSum = 0;
+-      dev->checkpointXor = 0;
+-      dev->checkpointCurrentBlock = -1;
+-      dev->checkpointCurrentChunk = -1;
+-      dev->checkpointNextBlock = dev->internalStartBlock;
++      dev->checkpt_page_seq = 0;
++      dev->checkpt_byte_count = 0;
++      dev->checkpt_sum = 0;
++      dev->checkpt_xor = 0;
++      dev->checkpt_cur_block = -1;
++      dev->checkpt_cur_chunk = -1;
++      dev->checkpt_next_block = dev->internal_start_block;
+ 
+       /* Erase all the blocks in the checkpoint area */
+       if (forWriting) {
+-              memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk);
+-              dev->checkpointByteOffset = 0;
+-              return yaffs_CheckpointErase(dev);
++              memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk);
++              dev->checkpt_byte_offs = 0;
++              return yaffs_checkpt_erase(dev);
+       } else {
+               int i;
+               /* Set to a value that will kick off a read */
+-              dev->checkpointByteOffset = dev->nDataBytesPerChunk;
++              dev->checkpt_byte_offs = dev->data_bytes_per_chunk;
+               /* A checkpoint block list of 1 checkpoint block per 16 block is (hopefully)
+                * going to be way more than we need */
+-              dev->blocksInCheckpoint = 0;
+-              dev->checkpointMaxBlocks = (dev->internalEndBlock - dev->internalStartBlock)/16 + 2;
+-              dev->checkpointBlockList = YMALLOC(sizeof(int) * dev->checkpointMaxBlocks);
+-              for (i = 0; i < dev->checkpointMaxBlocks; i++)
+-                      dev->checkpointBlockList[i] = -1;
++              dev->blocks_in_checkpt = 0;
++              dev->checkpt_max_blocks = (dev->internal_end_block - dev->internal_start_block)/16 + 2;
++              dev->checkpt_block_list = YMALLOC(sizeof(int) * dev->checkpt_max_blocks);
++              if(!dev->checkpt_block_list)
++                      return 0;
++
++              for (i = 0; i < dev->checkpt_max_blocks; i++)
++                      dev->checkpt_block_list[i] = -1;
+       }
+ 
+       return 1;
+ }
+ 
+-int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum)
++int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum)
+ {
+       __u32 compositeSum;
+-      compositeSum =  (dev->checkpointSum << 8) | (dev->checkpointXor & 0xFF);
++      compositeSum =  (dev->checkpt_sum << 8) | (dev->checkpt_xor & 0xFF);
+       *sum = compositeSum;
+       return 1;
+ }
+ 
+-static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev)
++static int yaffs2_checkpt_flush_buffer(yaffs_dev_t *dev)
+ {
+       int chunk;
+       int realignedChunk;
+ 
+-      yaffs_ExtendedTags tags;
++      yaffs_ext_tags tags;
+ 
+-      if (dev->checkpointCurrentBlock < 0) {
+-              yaffs_CheckpointFindNextErasedBlock(dev);
+-              dev->checkpointCurrentChunk = 0;
++      if (dev->checkpt_cur_block < 0) {
++              yaffs2_checkpt_find_erased_block(dev);
++              dev->checkpt_cur_chunk = 0;
+       }
+ 
+-      if (dev->checkpointCurrentBlock < 0)
++      if (dev->checkpt_cur_block < 0)
+               return 0;
+ 
+-      tags.chunkDeleted = 0;
+-      tags.objectId = dev->checkpointNextBlock; /* Hint to next place to look */
+-      tags.chunkId = dev->checkpointPageSequence + 1;
+-      tags.sequenceNumber =  YAFFS_SEQUENCE_CHECKPOINT_DATA;
+-      tags.byteCount = dev->nDataBytesPerChunk;
+-      if (dev->checkpointCurrentChunk == 0) {
++      tags.is_deleted = 0;
++      tags.obj_id = dev->checkpt_next_block; /* Hint to next place to look */
++      tags.chunk_id = dev->checkpt_page_seq + 1;
++      tags.seq_number =  YAFFS_SEQUENCE_CHECKPOINT_DATA;
++      tags.n_bytes = dev->data_bytes_per_chunk;
++      if (dev->checkpt_cur_chunk == 0) {
+               /* First chunk we write for the block? Set block state to
+                  checkpoint */
+-              yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointCurrentBlock);
+-              bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
+-              dev->blocksInCheckpoint++;
++              yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->checkpt_cur_block);
++              bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT;
++              dev->blocks_in_checkpt++;
+       }
+ 
+-      chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk;
++      chunk = dev->checkpt_cur_block * dev->param.chunks_per_block + dev->checkpt_cur_chunk;
+ 
+ 
+       T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR),
+-              chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk, tags.objectId, tags.chunkId));
++              chunk, dev->checkpt_cur_block, dev->checkpt_cur_chunk, tags.obj_id, tags.chunk_id));
+ 
+-      realignedChunk = chunk - dev->chunkOffset;
++      realignedChunk = chunk - dev->chunk_offset;
+ 
+-      dev->writeChunkWithTagsToNAND(dev, realignedChunk,
+-                      dev->checkpointBuffer, &tags);
+-      dev->checkpointByteOffset = 0;
+-      dev->checkpointPageSequence++;
+-      dev->checkpointCurrentChunk++;
+-      if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) {
+-              dev->checkpointCurrentChunk = 0;
+-              dev->checkpointCurrentBlock = -1;
++      dev->n_page_writes++;
++
++      dev->param.write_chunk_tags_fn(dev, realignedChunk,
++                      dev->checkpt_buffer, &tags);
++      dev->checkpt_byte_offs = 0;
++      dev->checkpt_page_seq++;
++      dev->checkpt_cur_chunk++;
++      if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block) {
++              dev->checkpt_cur_chunk = 0;
++              dev->checkpt_cur_block = -1;
+       }
+-      memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk);
++      memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk);
+ 
+       return 1;
+ }
+ 
+ 
+-int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes)
++int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes)
+ {
+       int i = 0;
+       int ok = 1;
+@@ -244,36 +248,36 @@ int yaffs_CheckpointWrite(yaffs_Device *
+ 
+ 
+ 
+-      if (!dev->checkpointBuffer)
++      if (!dev->checkpt_buffer)
+               return 0;
+ 
+-      if (!dev->checkpointOpenForWrite)
++      if (!dev->checkpt_open_write)
+               return -1;
+ 
+-      while (i < nBytes && ok) {
+-              dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes;
+-              dev->checkpointSum += *dataBytes;
+-              dev->checkpointXor ^= *dataBytes;
++      while (i < n_bytes && ok) {
++              dev->checkpt_buffer[dev->checkpt_byte_offs] = *dataBytes;
++              dev->checkpt_sum += *dataBytes;
++              dev->checkpt_xor ^= *dataBytes;
+ 
+-              dev->checkpointByteOffset++;
++              dev->checkpt_byte_offs++;
+               i++;
+               dataBytes++;
+-              dev->checkpointByteCount++;
++              dev->checkpt_byte_count++;
+ 
+ 
+-              if (dev->checkpointByteOffset < 0 ||
+-                 dev->checkpointByteOffset >= dev->nDataBytesPerChunk)
+-                      ok = yaffs_CheckpointFlushBuffer(dev);
++              if (dev->checkpt_byte_offs < 0 ||
++                 dev->checkpt_byte_offs >= dev->data_bytes_per_chunk)
++                      ok = yaffs2_checkpt_flush_buffer(dev);
+       }
+ 
+       return i;
+ }
+ 
+-int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
++int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes)
+ {
+       int i = 0;
+       int ok = 1;
+-      yaffs_ExtendedTags tags;
++      yaffs_ext_tags tags;
+ 
+ 
+       int chunk;
+@@ -281,113 +285,116 @@ int yaffs_CheckpointRead(yaffs_Device *d
+ 
+       __u8 *dataBytes = (__u8 *)data;
+ 
+-      if (!dev->checkpointBuffer)
++      if (!dev->checkpt_buffer)
+               return 0;
+ 
+-      if (dev->checkpointOpenForWrite)
++      if (dev->checkpt_open_write)
+               return -1;
+ 
+-      while (i < nBytes && ok) {
++      while (i < n_bytes && ok) {
+ 
+ 
+-              if (dev->checkpointByteOffset < 0 ||
+-                      dev->checkpointByteOffset >= dev->nDataBytesPerChunk) {
++              if (dev->checkpt_byte_offs < 0 ||
++                      dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) {
+ 
+-                      if (dev->checkpointCurrentBlock < 0) {
+-                              yaffs_CheckpointFindNextCheckpointBlock(dev);
+-                              dev->checkpointCurrentChunk = 0;
++                      if (dev->checkpt_cur_block < 0) {
++                              yaffs2_checkpt_find_block(dev);
++                              dev->checkpt_cur_chunk = 0;
+                       }
+ 
+-                      if (dev->checkpointCurrentBlock < 0)
++                      if (dev->checkpt_cur_block < 0)
+                               ok = 0;
+                       else {
+-                              chunk = dev->checkpointCurrentBlock *
+-                                      dev->nChunksPerBlock +
+-                                      dev->checkpointCurrentChunk;
+-
+-                              realignedChunk = chunk - dev->chunkOffset;
++                              chunk = dev->checkpt_cur_block *
++                                      dev->param.chunks_per_block +
++                                      dev->checkpt_cur_chunk;
++
++                              realignedChunk = chunk - dev->chunk_offset;
++                              
++                              dev->n_page_reads++;
+ 
+                               /* read in the next chunk */
+                               /* printf("read checkpoint page %d\n",dev->checkpointPage); */
+-                              dev->readChunkWithTagsFromNAND(dev,
++                              dev->param.read_chunk_tags_fn(dev,
+                                               realignedChunk,
+-                                              dev->checkpointBuffer,
++                                              dev->checkpt_buffer,
+                                               &tags);
+ 
+-                              if (tags.chunkId != (dev->checkpointPageSequence + 1) ||
+-                                      tags.eccResult > YAFFS_ECC_RESULT_FIXED ||
+-                                      tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA)
++                              if (tags.chunk_id != (dev->checkpt_page_seq + 1) ||
++                                      tags.ecc_result > YAFFS_ECC_RESULT_FIXED ||
++                                      tags.seq_number != YAFFS_SEQUENCE_CHECKPOINT_DATA)
+                                       ok = 0;
+ 
+-                              dev->checkpointByteOffset = 0;
+-                              dev->checkpointPageSequence++;
+-                              dev->checkpointCurrentChunk++;
++                              dev->checkpt_byte_offs = 0;
++                              dev->checkpt_page_seq++;
++                              dev->checkpt_cur_chunk++;
+ 
+-                              if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock)
+-                                      dev->checkpointCurrentBlock = -1;
++                              if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block)
++                                      dev->checkpt_cur_block = -1;
+                       }
+               }
+ 
+               if (ok) {
+-                      *dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset];
+-                      dev->checkpointSum += *dataBytes;
+-                      dev->checkpointXor ^= *dataBytes;
+-                      dev->checkpointByteOffset++;
++                      *dataBytes = dev->checkpt_buffer[dev->checkpt_byte_offs];
++                      dev->checkpt_sum += *dataBytes;
++                      dev->checkpt_xor ^= *dataBytes;
++                      dev->checkpt_byte_offs++;
+                       i++;
+                       dataBytes++;
+-                      dev->checkpointByteCount++;
++                      dev->checkpt_byte_count++;
+               }
+       }
+ 
+       return  i;
+ }
+ 
+-int yaffs_CheckpointClose(yaffs_Device *dev)
++int yaffs_checkpt_close(yaffs_dev_t *dev)
+ {
+ 
+-      if (dev->checkpointOpenForWrite) {
+-              if (dev->checkpointByteOffset != 0)
+-                      yaffs_CheckpointFlushBuffer(dev);
+-      } else {
++      if (dev->checkpt_open_write) {
++              if (dev->checkpt_byte_offs != 0)
++                      yaffs2_checkpt_flush_buffer(dev);
++      } else if(dev->checkpt_block_list){
+               int i;
+-              for (i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++) {
+-                      yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointBlockList[i]);
+-                      if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY)
+-                              bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
++              for (i = 0; i < dev->blocks_in_checkpt && dev->checkpt_block_list[i] >= 0; i++) {
++                      int blk = dev->checkpt_block_list[i];
++                      yaffs_block_info_t *bi = NULL;
++                      if( dev->internal_start_block <= blk && blk <= dev->internal_end_block)
++                              bi = yaffs_get_block_info(dev, blk);
++                      if (bi && bi->block_state == YAFFS_BLOCK_STATE_EMPTY)
++                              bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT;
+                       else {
+                               /* Todo this looks odd... */
+                       }
+               }
+-              YFREE(dev->checkpointBlockList);
+-              dev->checkpointBlockList = NULL;
++              YFREE(dev->checkpt_block_list);
++              dev->checkpt_block_list = NULL;
+       }
+ 
+-      dev->nFreeChunks -= dev->blocksInCheckpoint * dev->nChunksPerBlock;
+-      dev->nErasedBlocks -= dev->blocksInCheckpoint;
++      dev->n_free_chunks -= dev->blocks_in_checkpt * dev->param.chunks_per_block;
++      dev->n_erased_blocks -= dev->blocks_in_checkpt;
+ 
+ 
+       T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint byte count %d" TENDSTR),
+-                      dev->checkpointByteCount));
++                      dev->checkpt_byte_count));
+ 
+-      if (dev->checkpointBuffer) {
++      if (dev->checkpt_buffer) {
+               /* free the buffer */
+-              YFREE(dev->checkpointBuffer);
+-              dev->checkpointBuffer = NULL;
++              YFREE(dev->checkpt_buffer);
++              dev->checkpt_buffer = NULL;
+               return 1;
+       } else
+               return 0;
+ }
+ 
+-int yaffs_CheckpointInvalidateStream(yaffs_Device *dev)
++int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev)
+ {
+-      /* Erase the first checksum block */
+-
+-      T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate"TENDSTR)));
++      /* Erase the checkpoint data */
+ 
+-      if (!yaffs_CheckpointSpaceOk(dev))
+-              return 0;
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate of %d blocks"TENDSTR),
++              dev->blocks_in_checkpt));
+ 
+-      return yaffs_CheckpointErase(dev);
++      return yaffs_checkpt_erase(dev);
+ }
+ 
+ 
+--- a/fs/yaffs2/yaffs_checkptrw.h
++++ b/fs/yaffs2/yaffs_checkptrw.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -18,18 +18,17 @@
+ 
+ #include "yaffs_guts.h"
+ 
+-int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting);
++int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting);
+ 
+-int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes);
++int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes);
+ 
+-int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes);
++int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes);
+ 
+-int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum);
++int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum);
+ 
+-int yaffs_CheckpointClose(yaffs_Device *dev);
++int yaffs_checkpt_close(yaffs_dev_t *dev);
+ 
+-int yaffs_CheckpointInvalidateStream(yaffs_Device *dev);
++int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev);
+ 
+ 
+ #endif
+-
+--- a/fs/yaffs2/yaffs_ecc.c
++++ b/fs/yaffs2/yaffs_ecc.c
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -28,9 +28,6 @@
+  * this bytes influence on the line parity.
+  */
+ 
+-const char *yaffs_ecc_c_version =
+-      "$Id: yaffs_ecc.c,v 1.11 2009-03-06 17:20:50 wookey Exp $";
+-
+ #include "yportenv.h"
+ 
+ #include "yaffs_ecc.h"
+@@ -72,7 +69,7 @@ static const unsigned char column_parity
+ 
+ /* Count the bits in an unsigned char or a U32 */
+ 
+-static int yaffs_CountBits(unsigned char x)
++static int yaffs_count_bits(unsigned char x)
+ {
+       int r = 0;
+       while (x) {
+@@ -83,7 +80,7 @@ static int yaffs_CountBits(unsigned char
+       return r;
+ }
+ 
+-static int yaffs_CountBits32(unsigned x)
++static int yaffs_count_bits32(unsigned x)
+ {
+       int r = 0;
+       while (x) {
+@@ -95,7 +92,7 @@ static int yaffs_CountBits32(unsigned x)
+ }
+ 
+ /* Calculate the ECC for a 256-byte block of data */
+-void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc)
++void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc)
+ {
+       unsigned int i;
+ 
+@@ -166,7 +163,7 @@ void yaffs_ECCCalculate(const unsigned c
+ 
+ /* Correct the ECC on a 256 byte block of data */
+ 
+-int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
++int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc,
+                    const unsigned char *test_ecc)
+ {
+       unsigned char d0, d1, d2;       /* deltas */
+@@ -226,9 +223,9 @@ int yaffs_ECCCorrect(unsigned char *data
+               return 1; /* Corrected the error */
+       }
+ 
+-      if ((yaffs_CountBits(d0) +
+-           yaffs_CountBits(d1) +
+-           yaffs_CountBits(d2)) ==  1) {
++      if ((yaffs_count_bits(d0) +
++           yaffs_count_bits(d1) +
++           yaffs_count_bits(d2)) ==  1) {
+               /* Reccoverable error in ecc */
+ 
+               read_ecc[0] = test_ecc[0];
+@@ -248,7 +245,7 @@ int yaffs_ECCCorrect(unsigned char *data
+ /*
+  * ECCxxxOther does ECC calcs on arbitrary n bytes of data
+  */
+-void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
++void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes,
+                               yaffs_ECCOther *eccOther)
+ {
+       unsigned int i;
+@@ -258,7 +255,7 @@ void yaffs_ECCCalculateOther(const unsig
+       unsigned line_parity_prime = 0;
+       unsigned char b;
+ 
+-      for (i = 0; i < nBytes; i++) {
++      for (i = 0; i < n_bytes; i++) {
+               b = column_parity_table[*data++];
+               col_parity ^= b;
+ 
+@@ -275,7 +272,7 @@ void yaffs_ECCCalculateOther(const unsig
+       eccOther->lineParityPrime = line_parity_prime;
+ }
+ 
+-int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
++int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes,
+                       yaffs_ECCOther *read_ecc,
+                       const yaffs_ECCOther *test_ecc)
+ {
+@@ -304,7 +301,7 @@ int yaffs_ECCCorrectOther(unsigned char
+               if (cDelta & 0x02)
+                       bit |= 0x01;
+ 
+-              if (lDelta >= nBytes)
++              if (lDelta >= n_bytes)
+                       return -1;
+ 
+               data[lDelta] ^= (1 << bit);
+@@ -312,8 +309,8 @@ int yaffs_ECCCorrectOther(unsigned char
+               return 1; /* corrected */
+       }
+ 
+-      if ((yaffs_CountBits32(lDelta) + yaffs_CountBits32(lDeltaPrime) +
+-                      yaffs_CountBits(cDelta)) == 1) {
++      if ((yaffs_count_bits32(lDelta) + yaffs_count_bits32(lDeltaPrime) +
++                      yaffs_count_bits(cDelta)) == 1) {
+               /* Reccoverable error in ecc */
+ 
+               *read_ecc = *test_ecc;
+--- a/fs/yaffs2/yaffs_ecc.h
++++ b/fs/yaffs2/yaffs_ecc.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -32,13 +32,13 @@ typedef struct {
+       unsigned lineParityPrime;
+ } yaffs_ECCOther;
+ 
+-void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc);
+-int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
++void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc);
++int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc,
+               const unsigned char *test_ecc);
+ 
+-void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
++void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes,
+                       yaffs_ECCOther *ecc);
+-int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
++int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes,
+                       yaffs_ECCOther *read_ecc,
+                       const yaffs_ECCOther *test_ecc);
+ #endif
+--- a/fs/yaffs2/yaffs_fs.c
++++ /dev/null
+@@ -1,2529 +0,0 @@
+-/*
+- * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+- *
+- * Copyright (C) 2002-2009 Aleph One Ltd.
+- *   for Toby Churchill Ltd and Brightstar Engineering
+- *
+- * Created by Charles Manning <charles@aleph1.co.uk>
+- * Acknowledgements:
+- * Luc van OostenRyck for numerous patches.
+- * Nick Bane for numerous patches.
+- * Nick Bane for 2.5/2.6 integration.
+- * Andras Toth for mknod rdev issue.
+- * Michael Fischer for finding the problem with inode inconsistency.
+- * Some code bodily lifted from JFFS
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License version 2 as
+- * published by the Free Software Foundation.
+- */
+-
+-/*
+- *
+- * This is the file system front-end to YAFFS that hooks it up to
+- * the VFS.
+- *
+- * Special notes:
+- * >> 2.4: sb->u.generic_sbp points to the yaffs_Device associated with
+- *         this superblock
+- * >> 2.6: sb->s_fs_info  points to the yaffs_Device associated with this
+- *         superblock
+- * >> inode->u.generic_ip points to the associated yaffs_Object.
+- */
+-
+-const char *yaffs_fs_c_version =
+-    "$Id: yaffs_fs.c,v 1.79 2009-03-17 01:12:00 wookey Exp $";
+-extern const char *yaffs_guts_c_version;
+-
+-#include <linux/version.h>
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
+-#include <linux/config.h>
+-#endif
+-#include <linux/kernel.h>
+-#include <linux/module.h>
+-#include <linux/slab.h>
+-#include <linux/init.h>
+-#include <linux/fs.h>
+-#include <linux/proc_fs.h>
+-#include <linux/smp_lock.h>
+-#include <linux/pagemap.h>
+-#include <linux/mtd/mtd.h>
+-#include <linux/interrupt.h>
+-#include <linux/string.h>
+-#include <linux/ctype.h>
+-
+-#include "asm/div64.h"
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-
+-#include <linux/statfs.h>     /* Added NCB 15-8-2003 */
+-#include <linux/statfs.h>
+-#define UnlockPage(p) unlock_page(p)
+-#define Page_Uptodate(page)   test_bit(PG_uptodate, &(page)->flags)
+-
+-/* FIXME: use sb->s_id instead ? */
+-#define yaffs_devname(sb, buf)        bdevname(sb->s_bdev, buf)
+-
+-#else
+-
+-#include <linux/locks.h>
+-#define       BDEVNAME_SIZE           0
+-#define       yaffs_devname(sb, buf)  kdevname(sb->s_dev)
+-
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0))
+-/* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */
+-#define __user
+-#endif
+-
+-#endif
+-
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26))
+-#define YPROC_ROOT  (&proc_root)
+-#else
+-#define YPROC_ROOT  NULL
+-#endif
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-#define WRITE_SIZE_STR "writesize"
+-#define WRITE_SIZE(mtd) ((mtd)->writesize)
+-#else
+-#define WRITE_SIZE_STR "oobblock"
+-#define WRITE_SIZE(mtd) ((mtd)->oobblock)
+-#endif
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27))
+-#define YAFFS_USE_WRITE_BEGIN_END 1
+-#else
+-#define YAFFS_USE_WRITE_BEGIN_END 0
+-#endif
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28))
+-static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size)
+-{
+-      uint64_t result = partition_size;
+-      do_div(result, block_size);
+-      return (uint32_t)result;
+-}
+-#else
+-#define YCALCBLOCKS(s, b) ((s)/(b))
+-#endif
+-
+-#include <linux/uaccess.h>
+-
+-#include "yportenv.h"
+-#include "yaffs_guts.h"
+-
+-#include <linux/mtd/mtd.h>
+-#include "yaffs_mtdif.h"
+-#include "yaffs_mtdif1.h"
+-#include "yaffs_mtdif2.h"
+-
+-unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS;
+-unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS;
+-unsigned int yaffs_auto_checkpoint = 1;
+-
+-/* Module Parameters */
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-module_param(yaffs_traceMask, uint, 0644);
+-module_param(yaffs_wr_attempts, uint, 0644);
+-module_param(yaffs_auto_checkpoint, uint, 0644);
+-#else
+-MODULE_PARM(yaffs_traceMask, "i");
+-MODULE_PARM(yaffs_wr_attempts, "i");
+-MODULE_PARM(yaffs_auto_checkpoint, "i");
+-#endif
+-
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25))
+-/* use iget and read_inode */
+-#define Y_IGET(sb, inum) iget((sb), (inum))
+-static void yaffs_read_inode(struct inode *inode);
+-
+-#else
+-/* Call local equivalent */
+-#define YAFFS_USE_OWN_IGET
+-#define Y_IGET(sb, inum) yaffs_iget((sb), (inum))
+-
+-static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino);
+-#endif
+-
+-/*#define T(x) printk x */
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18))
+-#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private)
+-#else
+-#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip)
+-#endif
+-
+-#define yaffs_InodeToObject(iptr) ((yaffs_Object *)(yaffs_InodeToObjectLV(iptr)))
+-#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode)
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-#define yaffs_SuperToDevice(sb)       ((yaffs_Device *)sb->s_fs_info)
+-#else
+-#define yaffs_SuperToDevice(sb)       ((yaffs_Device *)sb->u.generic_sbp)
+-#endif
+-
+-static void yaffs_put_super(struct super_block *sb);
+-
+-static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
+-                              loff_t *pos);
+-static ssize_t yaffs_hold_space(struct file *f);
+-static void yaffs_release_space(struct file *f);
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-static int yaffs_file_flush(struct file *file, fl_owner_t id);
+-#else
+-static int yaffs_file_flush(struct file *file);
+-#endif
+-
+-static int yaffs_sync_object(struct file *file, struct dentry *dentry,
+-                              int datasync);
+-
+-static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir);
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
+-                      struct nameidata *n);
+-static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
+-                                      struct nameidata *n);
+-#else
+-static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode);
+-static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry);
+-#endif
+-static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
+-                      struct dentry *dentry);
+-static int yaffs_unlink(struct inode *dir, struct dentry *dentry);
+-static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
+-                      const char *symname);
+-static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode);
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
+-                      dev_t dev);
+-#else
+-static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
+-                      int dev);
+-#endif
+-static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
+-                      struct inode *new_dir, struct dentry *new_dentry);
+-static int yaffs_setattr(struct dentry *dentry, struct iattr *attr);
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-static int yaffs_sync_fs(struct super_block *sb, int wait);
+-static void yaffs_write_super(struct super_block *sb);
+-#else
+-static int yaffs_sync_fs(struct super_block *sb);
+-static int yaffs_write_super(struct super_block *sb);
+-#endif
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf);
+-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf);
+-#else
+-static int yaffs_statfs(struct super_block *sb, struct statfs *buf);
+-#endif
+-
+-#ifdef YAFFS_HAS_PUT_INODE
+-static void yaffs_put_inode(struct inode *inode);
+-#endif
+-
+-static void yaffs_delete_inode(struct inode *);
+-static void yaffs_clear_inode(struct inode *);
+-
+-static int yaffs_readpage(struct file *file, struct page *page);
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-static int yaffs_writepage(struct page *page, struct writeback_control *wbc);
+-#else
+-static int yaffs_writepage(struct page *page);
+-#endif
+-
+-
+-#if (YAFFS_USE_WRITE_BEGIN_END != 0)
+-static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
+-                              loff_t pos, unsigned len, unsigned flags,
+-                              struct page **pagep, void **fsdata);
+-static int yaffs_write_end(struct file *filp, struct address_space *mapping,
+-                              loff_t pos, unsigned len, unsigned copied,
+-                              struct page *pg, void *fsdadata);
+-#else
+-static int yaffs_prepare_write(struct file *f, struct page *pg,
+-                              unsigned offset, unsigned to);
+-static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
+-                              unsigned to);
+-
+-#endif
+-
+-static int yaffs_readlink(struct dentry *dentry, char __user *buffer,
+-                              int buflen);
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
+-static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
+-#else
+-static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
+-#endif
+-
+-static struct address_space_operations yaffs_file_address_operations = {
+-      .readpage = yaffs_readpage,
+-      .writepage = yaffs_writepage,
+-#if (YAFFS_USE_WRITE_BEGIN_END > 0)
+-      .write_begin = yaffs_write_begin,
+-      .write_end = yaffs_write_end,
+-#else
+-      .prepare_write = yaffs_prepare_write,
+-      .commit_write = yaffs_commit_write,
+-#endif
+-};
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22))
+-static const struct file_operations yaffs_file_operations = {
+-      .read = do_sync_read,
+-      .write = do_sync_write,
+-      .aio_read = generic_file_aio_read,
+-      .aio_write = generic_file_aio_write,
+-      .mmap = generic_file_mmap,
+-      .flush = yaffs_file_flush,
+-      .fsync = yaffs_sync_object,
+-      .splice_read = generic_file_splice_read,
+-      .splice_write = generic_file_splice_write,
+-      .llseek = generic_file_llseek,
+-};
+-
+-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18))
+-
+-static const struct file_operations yaffs_file_operations = {
+-      .read = do_sync_read,
+-      .write = do_sync_write,
+-      .aio_read = generic_file_aio_read,
+-      .aio_write = generic_file_aio_write,
+-      .mmap = generic_file_mmap,
+-      .flush = yaffs_file_flush,
+-      .fsync = yaffs_sync_object,
+-      .sendfile = generic_file_sendfile,
+-};
+-
+-#else
+-
+-static const struct file_operations yaffs_file_operations = {
+-      .read = generic_file_read,
+-      .write = generic_file_write,
+-      .mmap = generic_file_mmap,
+-      .flush = yaffs_file_flush,
+-      .fsync = yaffs_sync_object,
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-      .sendfile = generic_file_sendfile,
+-#endif
+-};
+-#endif
+-
+-static const struct inode_operations yaffs_file_inode_operations = {
+-      .setattr = yaffs_setattr,
+-};
+-
+-static const struct inode_operations yaffs_symlink_inode_operations = {
+-      .readlink = yaffs_readlink,
+-      .follow_link = yaffs_follow_link,
+-      .setattr = yaffs_setattr,
+-};
+-
+-static const struct inode_operations yaffs_dir_inode_operations = {
+-      .create = yaffs_create,
+-      .lookup = yaffs_lookup,
+-      .link = yaffs_link,
+-      .unlink = yaffs_unlink,
+-      .symlink = yaffs_symlink,
+-      .mkdir = yaffs_mkdir,
+-      .rmdir = yaffs_unlink,
+-      .mknod = yaffs_mknod,
+-      .rename = yaffs_rename,
+-      .setattr = yaffs_setattr,
+-};
+-
+-static const struct file_operations yaffs_dir_operations = {
+-      .read = generic_read_dir,
+-      .readdir = yaffs_readdir,
+-      .fsync = yaffs_sync_object,
+-};
+-
+-static const struct super_operations yaffs_super_ops = {
+-      .statfs = yaffs_statfs,
+-
+-#ifndef YAFFS_USE_OWN_IGET
+-      .read_inode = yaffs_read_inode,
+-#endif
+-#ifdef YAFFS_HAS_PUT_INODE
+-      .put_inode = yaffs_put_inode,
+-#endif
+-      .put_super = yaffs_put_super,
+-      .delete_inode = yaffs_delete_inode,
+-      .clear_inode = yaffs_clear_inode,
+-      .sync_fs = yaffs_sync_fs,
+-      .write_super = yaffs_write_super,
+-};
+-
+-static void yaffs_GrossLock(yaffs_Device *dev)
+-{
+-      T(YAFFS_TRACE_OS, ("yaffs locking %p\n", current));
+-      down(&dev->grossLock);
+-      T(YAFFS_TRACE_OS, ("yaffs locked %p\n", current));
+-}
+-
+-static void yaffs_GrossUnlock(yaffs_Device *dev)
+-{
+-      T(YAFFS_TRACE_OS, ("yaffs unlocking %p\n", current));
+-      up(&dev->grossLock);
+-}
+-
+-static int yaffs_readlink(struct dentry *dentry, char __user *buffer,
+-                      int buflen)
+-{
+-      unsigned char *alias;
+-      int ret;
+-
+-      yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev;
+-
+-      yaffs_GrossLock(dev);
+-
+-      alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry));
+-
+-      yaffs_GrossUnlock(dev);
+-
+-      if (!alias)
+-              return -ENOMEM;
+-
+-      ret = vfs_readlink(dentry, buffer, buflen, alias);
+-      kfree(alias);
+-      return ret;
+-}
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
+-static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
+-#else
+-static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
+-#endif
+-{
+-      unsigned char *alias;
+-      int ret;
+-      yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev;
+-
+-      yaffs_GrossLock(dev);
+-
+-      alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry));
+-
+-      yaffs_GrossUnlock(dev);
+-
+-      if (!alias) {
+-              ret = -ENOMEM;
+-              goto out;
+-      }
+-
+-      ret = vfs_follow_link(nd, alias);
+-      kfree(alias);
+-out:
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
+-      return ERR_PTR(ret);
+-#else
+-      return ret;
+-#endif
+-}
+-
+-struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
+-                              yaffs_Object *obj);
+-
+-/*
+- * Lookup is used to find objects in the fs
+- */
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-
+-static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
+-                              struct nameidata *n)
+-#else
+-static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry)
+-#endif
+-{
+-      yaffs_Object *obj;
+-      struct inode *inode = NULL;     /* NCB 2.5/2.6 needs NULL here */
+-
+-      yaffs_Device *dev = yaffs_InodeToObject(dir)->myDev;
+-
+-      yaffs_GrossLock(dev);
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_lookup for %d:%s\n",
+-              yaffs_InodeToObject(dir)->objectId, dentry->d_name.name));
+-
+-      obj = yaffs_FindObjectByName(yaffs_InodeToObject(dir),
+-                                      dentry->d_name.name);
+-
+-      obj = yaffs_GetEquivalentObject(obj);   /* in case it was a hardlink */
+-
+-      /* Can't hold gross lock when calling yaffs_get_inode() */
+-      yaffs_GrossUnlock(dev);
+-
+-      if (obj) {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_lookup found %d\n", obj->objectId));
+-
+-              inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
+-
+-              if (inode) {
+-                      T(YAFFS_TRACE_OS,
+-                              ("yaffs_loookup dentry \n"));
+-/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to
+- * d_add even if NULL inode */
+-#if 0
+-                      /*dget(dentry); // try to solve directory bug */
+-                      d_add(dentry, inode);
+-
+-                      /* return dentry; */
+-                      return NULL;
+-#endif
+-              }
+-
+-      } else {
+-              T(YAFFS_TRACE_OS, ("yaffs_lookup not found\n"));
+-
+-      }
+-
+-/* added NCB for 2.5/6 compatability - forces add even if inode is
+- * NULL which creates dentry hash */
+-      d_add(dentry, inode);
+-
+-      return NULL;
+-}
+-
+-
+-#ifdef YAFFS_HAS_PUT_INODE
+-
+-/* For now put inode is just for debugging
+- * Put inode is called when the inode **structure** is put.
+- */
+-static void yaffs_put_inode(struct inode *inode)
+-{
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_put_inode: ino %d, count %d\n", (int)inode->i_ino,
+-              atomic_read(&inode->i_count)));
+-
+-}
+-#endif
+-
+-/* clear is called to tell the fs to release any per-inode data it holds */
+-static void yaffs_clear_inode(struct inode *inode)
+-{
+-      yaffs_Object *obj;
+-      yaffs_Device *dev;
+-
+-      obj = yaffs_InodeToObject(inode);
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_clear_inode: ino %d, count %d %s\n", (int)inode->i_ino,
+-              atomic_read(&inode->i_count),
+-              obj ? "object exists" : "null object"));
+-
+-      if (obj) {
+-              dev = obj->myDev;
+-              yaffs_GrossLock(dev);
+-
+-              /* Clear the association between the inode and
+-               * the yaffs_Object.
+-               */
+-              obj->myInode = NULL;
+-              yaffs_InodeToObjectLV(inode) = NULL;
+-
+-              /* If the object freeing was deferred, then the real
+-               * free happens now.
+-               * This should fix the inode inconsistency problem.
+-               */
+-
+-              yaffs_HandleDeferedFree(obj);
+-
+-              yaffs_GrossUnlock(dev);
+-      }
+-
+-}
+-
+-/* delete is called when the link count is zero and the inode
+- * is put (ie. nobody wants to know about it anymore, time to
+- * delete the file).
+- * NB Must call clear_inode()
+- */
+-static void yaffs_delete_inode(struct inode *inode)
+-{
+-      yaffs_Object *obj = yaffs_InodeToObject(inode);
+-      yaffs_Device *dev;
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_delete_inode: ino %d, count %d %s\n", (int)inode->i_ino,
+-              atomic_read(&inode->i_count),
+-              obj ? "object exists" : "null object"));
+-
+-      if (obj) {
+-              dev = obj->myDev;
+-              yaffs_GrossLock(dev);
+-              yaffs_DeleteObject(obj);
+-              yaffs_GrossUnlock(dev);
+-      }
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
+-      truncate_inode_pages(&inode->i_data, 0);
+-#endif
+-      clear_inode(inode);
+-}
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-static int yaffs_file_flush(struct file *file, fl_owner_t id)
+-#else
+-static int yaffs_file_flush(struct file *file)
+-#endif
+-{
+-      yaffs_Object *obj = yaffs_DentryToObject(file->f_dentry);
+-
+-      yaffs_Device *dev = obj->myDev;
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_file_flush object %d (%s)\n", obj->objectId,
+-              obj->dirty ? "dirty" : "clean"));
+-
+-      yaffs_GrossLock(dev);
+-
+-      yaffs_FlushFile(obj, 1);
+-
+-      yaffs_GrossUnlock(dev);
+-
+-      return 0;
+-}
+-
+-static int yaffs_readpage_nolock(struct file *f, struct page *pg)
+-{
+-      /* Lifted from jffs2 */
+-
+-      yaffs_Object *obj;
+-      unsigned char *pg_buf;
+-      int ret;
+-
+-      yaffs_Device *dev;
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_readpage at %08x, size %08x\n",
+-                      (unsigned)(pg->index << PAGE_CACHE_SHIFT),
+-                      (unsigned)PAGE_CACHE_SIZE));
+-
+-      obj = yaffs_DentryToObject(f->f_dentry);
+-
+-      dev = obj->myDev;
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-      BUG_ON(!PageLocked(pg));
+-#else
+-      if (!PageLocked(pg))
+-              PAGE_BUG(pg);
+-#endif
+-
+-      pg_buf = kmap(pg);
+-      /* FIXME: Can kmap fail? */
+-
+-      yaffs_GrossLock(dev);
+-
+-      ret = yaffs_ReadDataFromFile(obj, pg_buf,
+-                              pg->index << PAGE_CACHE_SHIFT,
+-                              PAGE_CACHE_SIZE);
+-
+-      yaffs_GrossUnlock(dev);
+-
+-      if (ret >= 0)
+-              ret = 0;
+-
+-      if (ret) {
+-              ClearPageUptodate(pg);
+-              SetPageError(pg);
+-      } else {
+-              SetPageUptodate(pg);
+-              ClearPageError(pg);
+-      }
+-
+-      flush_dcache_page(pg);
+-      kunmap(pg);
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_readpage done\n"));
+-      return ret;
+-}
+-
+-static int yaffs_readpage_unlock(struct file *f, struct page *pg)
+-{
+-      int ret = yaffs_readpage_nolock(f, pg);
+-      UnlockPage(pg);
+-      return ret;
+-}
+-
+-static int yaffs_readpage(struct file *f, struct page *pg)
+-{
+-      return yaffs_readpage_unlock(f, pg);
+-}
+-
+-/* writepage inspired by/stolen from smbfs */
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-static int yaffs_writepage(struct page *page, struct writeback_control *wbc)
+-#else
+-static int yaffs_writepage(struct page *page)
+-#endif
+-{
+-      struct address_space *mapping = page->mapping;
+-      loff_t offset = (loff_t) page->index << PAGE_CACHE_SHIFT;
+-      struct inode *inode;
+-      unsigned long end_index;
+-      char *buffer;
+-      yaffs_Object *obj;
+-      int nWritten = 0;
+-      unsigned nBytes;
+-
+-      if (!mapping)
+-              BUG();
+-      inode = mapping->host;
+-      if (!inode)
+-              BUG();
+-
+-      if (offset > inode->i_size) {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_writepage at %08x, inode size = %08x!!!\n",
+-                      (unsigned)(page->index << PAGE_CACHE_SHIFT),
+-                      (unsigned)inode->i_size));
+-              T(YAFFS_TRACE_OS,
+-                      ("                -> don't care!!\n"));
+-              unlock_page(page);
+-              return 0;
+-      }
+-
+-      end_index = inode->i_size >> PAGE_CACHE_SHIFT;
+-
+-      /* easy case */
+-      if (page->index < end_index)
+-              nBytes = PAGE_CACHE_SIZE;
+-      else
+-              nBytes = inode->i_size & (PAGE_CACHE_SIZE - 1);
+-
+-      get_page(page);
+-
+-      buffer = kmap(page);
+-
+-      obj = yaffs_InodeToObject(inode);
+-      yaffs_GrossLock(obj->myDev);
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_writepage at %08x, size %08x\n",
+-              (unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes));
+-      T(YAFFS_TRACE_OS,
+-              ("writepag0: obj = %05x, ino = %05x\n",
+-              (int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
+-
+-      nWritten = yaffs_WriteDataToFile(obj, buffer,
+-                      page->index << PAGE_CACHE_SHIFT, nBytes, 0);
+-
+-      T(YAFFS_TRACE_OS,
+-              ("writepag1: obj = %05x, ino = %05x\n",
+-              (int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
+-
+-      yaffs_GrossUnlock(obj->myDev);
+-
+-      kunmap(page);
+-      SetPageUptodate(page);
+-      UnlockPage(page);
+-      put_page(page);
+-
+-      return (nWritten == nBytes) ? 0 : -ENOSPC;
+-}
+-
+-
+-#if (YAFFS_USE_WRITE_BEGIN_END > 0)
+-static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
+-                              loff_t pos, unsigned len, unsigned flags,
+-                              struct page **pagep, void **fsdata)
+-{
+-      struct page *pg = NULL;
+-      pgoff_t index = pos >> PAGE_CACHE_SHIFT;
+-      uint32_t offset = pos & (PAGE_CACHE_SIZE - 1);
+-      uint32_t to = offset + len;
+-
+-      int ret = 0;
+-      int space_held = 0;
+-
+-      T(YAFFS_TRACE_OS, ("start yaffs_write_begin\n"));
+-      /* Get a page */
+-#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)
+-      pg = grab_cache_page_write_begin(mapping, index, flags);
+-#else
+-      pg = __grab_cache_page(mapping, index);
+-#endif
+-
+-      *pagep = pg;
+-      if (!pg) {
+-              ret =  -ENOMEM;
+-              goto out;
+-      }
+-      /* Get fs space */
+-      space_held = yaffs_hold_space(filp);
+-
+-      if (!space_held) {
+-              ret = -ENOSPC;
+-              goto out;
+-      }
+-
+-      /* Update page if required */
+-
+-      if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE))
+-              ret = yaffs_readpage_nolock(filp, pg);
+-
+-      if (ret)
+-              goto out;
+-
+-      /* Happy path return */
+-      T(YAFFS_TRACE_OS, ("end yaffs_write_begin - ok\n"));
+-
+-      return 0;
+-
+-out:
+-      T(YAFFS_TRACE_OS, ("end yaffs_write_begin fail returning %d\n", ret));
+-      if (space_held)
+-              yaffs_release_space(filp);
+-      if (pg) {
+-              unlock_page(pg);
+-              page_cache_release(pg);
+-      }
+-      return ret;
+-}
+-
+-#else
+-
+-static int yaffs_prepare_write(struct file *f, struct page *pg,
+-                              unsigned offset, unsigned to)
+-{
+-      T(YAFFS_TRACE_OS, ("yaffs_prepair_write\n"));
+-
+-      if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE))
+-              return yaffs_readpage_nolock(f, pg);
+-      return 0;
+-}
+-#endif
+-
+-#if (YAFFS_USE_WRITE_BEGIN_END > 0)
+-static int yaffs_write_end(struct file *filp, struct address_space *mapping,
+-                              loff_t pos, unsigned len, unsigned copied,
+-                              struct page *pg, void *fsdadata)
+-{
+-      int ret = 0;
+-      void *addr, *kva;
+-      uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE - 1);
+-
+-      kva = kmap(pg);
+-      addr = kva + offset_into_page;
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_write_end addr %x pos %x nBytes %d\n",
+-              (unsigned) addr,
+-              (int)pos, copied));
+-
+-      ret = yaffs_file_write(filp, addr, copied, &pos);
+-
+-      if (ret != copied) {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_write_end not same size ret %d  copied %d\n",
+-                      ret, copied));
+-              SetPageError(pg);
+-              ClearPageUptodate(pg);
+-      } else {
+-              SetPageUptodate(pg);
+-      }
+-
+-      kunmap(pg);
+-
+-      yaffs_release_space(filp);
+-      unlock_page(pg);
+-      page_cache_release(pg);
+-      return ret;
+-}
+-#else
+-
+-static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
+-                              unsigned to)
+-{
+-      void *addr, *kva;
+-
+-      loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset;
+-      int nBytes = to - offset;
+-      int nWritten;
+-
+-      unsigned spos = pos;
+-      unsigned saddr;
+-
+-      kva = kmap(pg);
+-      addr = kva + offset;
+-
+-      saddr = (unsigned) addr;
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_commit_write addr %x pos %x nBytes %d\n",
+-              saddr, spos, nBytes));
+-
+-      nWritten = yaffs_file_write(f, addr, nBytes, &pos);
+-
+-      if (nWritten != nBytes) {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_commit_write not same size nWritten %d  nBytes %d\n",
+-                      nWritten, nBytes));
+-              SetPageError(pg);
+-              ClearPageUptodate(pg);
+-      } else {
+-              SetPageUptodate(pg);
+-      }
+-
+-      kunmap(pg);
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_commit_write returning %d\n",
+-              nWritten == nBytes ? 0 : nWritten));
+-
+-      return nWritten == nBytes ? 0 : nWritten;
+-}
+-#endif
+-
+-
+-static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object *obj)
+-{
+-      if (inode && obj) {
+-
+-
+-              /* Check mode against the variant type and attempt to repair if broken. */
+-              __u32 mode = obj->yst_mode;
+-              switch (obj->variantType) {
+-              case YAFFS_OBJECT_TYPE_FILE:
+-                      if (!S_ISREG(mode)) {
+-                              obj->yst_mode &= ~S_IFMT;
+-                              obj->yst_mode |= S_IFREG;
+-                      }
+-
+-                      break;
+-              case YAFFS_OBJECT_TYPE_SYMLINK:
+-                      if (!S_ISLNK(mode)) {
+-                              obj->yst_mode &= ~S_IFMT;
+-                              obj->yst_mode |= S_IFLNK;
+-                      }
+-
+-                      break;
+-              case YAFFS_OBJECT_TYPE_DIRECTORY:
+-                      if (!S_ISDIR(mode)) {
+-                              obj->yst_mode &= ~S_IFMT;
+-                              obj->yst_mode |= S_IFDIR;
+-                      }
+-
+-                      break;
+-              case YAFFS_OBJECT_TYPE_UNKNOWN:
+-              case YAFFS_OBJECT_TYPE_HARDLINK:
+-              case YAFFS_OBJECT_TYPE_SPECIAL:
+-              default:
+-                      /* TODO? */
+-                      break;
+-              }
+-
+-              inode->i_flags |= S_NOATIME;
+-
+-              inode->i_ino = obj->objectId;
+-              inode->i_mode = obj->yst_mode;
+-              inode->i_uid = obj->yst_uid;
+-              inode->i_gid = obj->yst_gid;
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
+-              inode->i_blksize = inode->i_sb->s_blocksize;
+-#endif
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-
+-              inode->i_rdev = old_decode_dev(obj->yst_rdev);
+-              inode->i_atime.tv_sec = (time_t) (obj->yst_atime);
+-              inode->i_atime.tv_nsec = 0;
+-              inode->i_mtime.tv_sec = (time_t) obj->yst_mtime;
+-              inode->i_mtime.tv_nsec = 0;
+-              inode->i_ctime.tv_sec = (time_t) obj->yst_ctime;
+-              inode->i_ctime.tv_nsec = 0;
+-#else
+-              inode->i_rdev = obj->yst_rdev;
+-              inode->i_atime = obj->yst_atime;
+-              inode->i_mtime = obj->yst_mtime;
+-              inode->i_ctime = obj->yst_ctime;
+-#endif
+-              inode->i_size = yaffs_GetObjectFileLength(obj);
+-              inode->i_blocks = (inode->i_size + 511) >> 9;
+-
+-              inode->i_nlink = yaffs_GetObjectLinkCount(obj);
+-
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_FillInode mode %x uid %d gid %d size %d count %d\n",
+-                      inode->i_mode, inode->i_uid, inode->i_gid,
+-                      (int)inode->i_size, atomic_read(&inode->i_count)));
+-
+-              switch (obj->yst_mode & S_IFMT) {
+-              default:        /* fifo, device or socket */
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-                      init_special_inode(inode, obj->yst_mode,
+-                                      old_decode_dev(obj->yst_rdev));
+-#else
+-                      init_special_inode(inode, obj->yst_mode,
+-                                      (dev_t) (obj->yst_rdev));
+-#endif
+-                      break;
+-              case S_IFREG:   /* file */
+-                      inode->i_op = &yaffs_file_inode_operations;
+-                      inode->i_fop = &yaffs_file_operations;
+-                      inode->i_mapping->a_ops =
+-                              &yaffs_file_address_operations;
+-                      break;
+-              case S_IFDIR:   /* directory */
+-                      inode->i_op = &yaffs_dir_inode_operations;
+-                      inode->i_fop = &yaffs_dir_operations;
+-                      break;
+-              case S_IFLNK:   /* symlink */
+-                      inode->i_op = &yaffs_symlink_inode_operations;
+-                      break;
+-              }
+-
+-              yaffs_InodeToObjectLV(inode) = obj;
+-
+-              obj->myInode = inode;
+-
+-      } else {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_FileInode invalid parameters\n"));
+-      }
+-
+-}
+-
+-struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
+-                              yaffs_Object *obj)
+-{
+-      struct inode *inode;
+-
+-      if (!sb) {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_get_inode for NULL super_block!!\n"));
+-              return NULL;
+-
+-      }
+-
+-      if (!obj) {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_get_inode for NULL object!!\n"));
+-              return NULL;
+-
+-      }
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_get_inode for object %d\n", obj->objectId));
+-
+-      inode = Y_IGET(sb, obj->objectId);
+-      if (IS_ERR(inode))
+-              return NULL;
+-
+-      /* NB Side effect: iget calls back to yaffs_read_inode(). */
+-      /* iget also increments the inode's i_count */
+-      /* NB You can't be holding grossLock or deadlock will happen! */
+-
+-      return inode;
+-}
+-
+-static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
+-                              loff_t *pos)
+-{
+-      yaffs_Object *obj;
+-      int nWritten, ipos;
+-      struct inode *inode;
+-      yaffs_Device *dev;
+-
+-      obj = yaffs_DentryToObject(f->f_dentry);
+-
+-      dev = obj->myDev;
+-
+-      yaffs_GrossLock(dev);
+-
+-      inode = f->f_dentry->d_inode;
+-
+-      if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND)
+-              ipos = inode->i_size;
+-      else
+-              ipos = *pos;
+-
+-      if (!obj)
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_file_write: hey obj is null!\n"));
+-      else
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_file_write about to write writing %zu bytes"
+-                      "to object %d at %d\n",
+-                      n, obj->objectId, ipos));
+-
+-      nWritten = yaffs_WriteDataToFile(obj, buf, ipos, n, 0);
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_file_write writing %zu bytes, %d written at %d\n",
+-              n, nWritten, ipos));
+-
+-      if (nWritten > 0) {
+-              ipos += nWritten;
+-              *pos = ipos;
+-              if (ipos > inode->i_size) {
+-                      inode->i_size = ipos;
+-                      inode->i_blocks = (ipos + 511) >> 9;
+-
+-                      T(YAFFS_TRACE_OS,
+-                              ("yaffs_file_write size updated to %d bytes, "
+-                              "%d blocks\n",
+-                              ipos, (int)(inode->i_blocks)));
+-              }
+-
+-      }
+-      yaffs_GrossUnlock(dev);
+-      return nWritten == 0 ? -ENOSPC : nWritten;
+-}
+-
+-/* Space holding and freeing is done to ensure we have space available for write_begin/end */
+-/* For now we just assume few parallel writes and check against a small number. */
+-/* Todo: need to do this with a counter to handle parallel reads better */
+-
+-static ssize_t yaffs_hold_space(struct file *f)
+-{
+-      yaffs_Object *obj;
+-      yaffs_Device *dev;
+-
+-      int nFreeChunks;
+-
+-
+-      obj = yaffs_DentryToObject(f->f_dentry);
+-
+-      dev = obj->myDev;
+-
+-      yaffs_GrossLock(dev);
+-
+-      nFreeChunks = yaffs_GetNumberOfFreeChunks(dev);
+-
+-      yaffs_GrossUnlock(dev);
+-
+-      return (nFreeChunks > 20) ? 1 : 0;
+-}
+-
+-static void yaffs_release_space(struct file *f)
+-{
+-      yaffs_Object *obj;
+-      yaffs_Device *dev;
+-
+-
+-      obj = yaffs_DentryToObject(f->f_dentry);
+-
+-      dev = obj->myDev;
+-
+-      yaffs_GrossLock(dev);
+-
+-
+-      yaffs_GrossUnlock(dev);
+-}
+-
+-static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)
+-{
+-      yaffs_Object *obj;
+-      yaffs_Device *dev;
+-      struct inode *inode = f->f_dentry->d_inode;
+-      unsigned long offset, curoffs;
+-      struct ylist_head *i;
+-      yaffs_Object *l;
+-
+-      char name[YAFFS_MAX_NAME_LENGTH + 1];
+-
+-      obj = yaffs_DentryToObject(f->f_dentry);
+-      dev = obj->myDev;
+-
+-      yaffs_GrossLock(dev);
+-
+-      offset = f->f_pos;
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_readdir: starting at %d\n", (int)offset));
+-
+-      if (offset == 0) {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_readdir: entry . ino %d \n",
+-                      (int)inode->i_ino));
+-              if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0)
+-                      goto out;
+-              offset++;
+-              f->f_pos++;
+-      }
+-      if (offset == 1) {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_readdir: entry .. ino %d \n",
+-                      (int)f->f_dentry->d_parent->d_inode->i_ino));
+-              if (filldir(dirent, "..", 2, offset,
+-                      f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0)
+-                      goto out;
+-              offset++;
+-              f->f_pos++;
+-      }
+-
+-      curoffs = 1;
+-
+-      /* If the directory has changed since the open or last call to
+-         readdir, rewind to after the 2 canned entries. */
+-
+-      if (f->f_version != inode->i_version) {
+-              offset = 2;
+-              f->f_pos = offset;
+-              f->f_version = inode->i_version;
+-      }
+-
+-      ylist_for_each(i, &obj->variant.directoryVariant.children) {
+-              curoffs++;
+-              if (curoffs >= offset) {
+-                      l = ylist_entry(i, yaffs_Object, siblings);
+-
+-                      yaffs_GetObjectName(l, name,
+-                                          YAFFS_MAX_NAME_LENGTH + 1);
+-                      T(YAFFS_TRACE_OS,
+-                        ("yaffs_readdir: %s inode %d\n", name,
+-                         yaffs_GetObjectInode(l)));
+-
+-                      if (filldir(dirent,
+-                                      name,
+-                                      strlen(name),
+-                                      offset,
+-                                      yaffs_GetObjectInode(l),
+-                                      yaffs_GetObjectType(l)) < 0)
+-                              goto up_and_out;
+-
+-                      offset++;
+-                      f->f_pos++;
+-              }
+-      }
+-
+-up_and_out:
+-out:
+-      yaffs_GrossUnlock(dev);
+-
+-      return 0;
+-}
+-
+-/*
+- * File creation. Allocate an inode, and we're done..
+- */
+-
+-#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
+-#define YCRED(x) x
+-#else
+-#define YCRED(x) (x->cred)
+-#endif
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
+-                      dev_t rdev)
+-#else
+-static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
+-                      int rdev)
+-#endif
+-{
+-      struct inode *inode;
+-
+-      yaffs_Object *obj = NULL;
+-      yaffs_Device *dev;
+-
+-      yaffs_Object *parent = yaffs_InodeToObject(dir);
+-
+-      int error = -ENOSPC;
+-      uid_t uid = YCRED(current)->fsuid;
+-      gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
+-
+-      if ((dir->i_mode & S_ISGID) && S_ISDIR(mode))
+-              mode |= S_ISGID;
+-
+-      if (parent) {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_mknod: parent object %d type %d\n",
+-                      parent->objectId, parent->variantType));
+-      } else {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_mknod: could not get parent object\n"));
+-              return -EPERM;
+-      }
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_mknod: making oject for %s, "
+-                      "mode %x dev %x\n",
+-                      dentry->d_name.name, mode, rdev));
+-
+-      dev = parent->myDev;
+-
+-      yaffs_GrossLock(dev);
+-
+-      switch (mode & S_IFMT) {
+-      default:
+-              /* Special (socket, fifo, device...) */
+-              T(YAFFS_TRACE_OS, ("yaffs_mknod: making special\n"));
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-              obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
+-                              gid, old_encode_dev(rdev));
+-#else
+-              obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
+-                              gid, rdev);
+-#endif
+-              break;
+-      case S_IFREG:           /* file          */
+-              T(YAFFS_TRACE_OS, ("yaffs_mknod: making file\n"));
+-              obj = yaffs_MknodFile(parent, dentry->d_name.name, mode, uid,
+-                              gid);
+-              break;
+-      case S_IFDIR:           /* directory */
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_mknod: making directory\n"));
+-              obj = yaffs_MknodDirectory(parent, dentry->d_name.name, mode,
+-                                      uid, gid);
+-              break;
+-      case S_IFLNK:           /* symlink */
+-              T(YAFFS_TRACE_OS, ("yaffs_mknod: making symlink\n"));
+-              obj = NULL;     /* Do we ever get here? */
+-              break;
+-      }
+-
+-      /* Can not call yaffs_get_inode() with gross lock held */
+-      yaffs_GrossUnlock(dev);
+-
+-      if (obj) {
+-              inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj);
+-              d_instantiate(dentry, inode);
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_mknod created object %d count = %d\n",
+-                      obj->objectId, atomic_read(&inode->i_count)));
+-              error = 0;
+-      } else {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_mknod failed making object\n"));
+-              error = -ENOMEM;
+-      }
+-
+-      return error;
+-}
+-
+-static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
+-{
+-      int retVal;
+-      T(YAFFS_TRACE_OS, ("yaffs_mkdir\n"));
+-      retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0);
+-      return retVal;
+-}
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
+-                      struct nameidata *n)
+-#else
+-static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode)
+-#endif
+-{
+-      T(YAFFS_TRACE_OS, ("yaffs_create\n"));
+-      return yaffs_mknod(dir, dentry, mode | S_IFREG, 0);
+-}
+-
+-static int yaffs_unlink(struct inode *dir, struct dentry *dentry)
+-{
+-      int retVal;
+-
+-      yaffs_Device *dev;
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_unlink %d:%s\n", (int)(dir->i_ino),
+-              dentry->d_name.name));
+-
+-      dev = yaffs_InodeToObject(dir)->myDev;
+-
+-      yaffs_GrossLock(dev);
+-
+-      retVal = yaffs_Unlink(yaffs_InodeToObject(dir), dentry->d_name.name);
+-
+-      if (retVal == YAFFS_OK) {
+-              dentry->d_inode->i_nlink--;
+-              dir->i_version++;
+-              yaffs_GrossUnlock(dev);
+-              mark_inode_dirty(dentry->d_inode);
+-              return 0;
+-      }
+-      yaffs_GrossUnlock(dev);
+-      return -ENOTEMPTY;
+-}
+-
+-/*
+- * Create a link...
+- */
+-static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
+-                      struct dentry *dentry)
+-{
+-      struct inode *inode = old_dentry->d_inode;
+-      yaffs_Object *obj = NULL;
+-      yaffs_Object *link = NULL;
+-      yaffs_Device *dev;
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_link\n"));
+-
+-      obj = yaffs_InodeToObject(inode);
+-      dev = obj->myDev;
+-
+-      yaffs_GrossLock(dev);
+-
+-      if (!S_ISDIR(inode->i_mode))            /* Don't link directories */
+-              link = yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name,
+-                      obj);
+-
+-      if (link) {
+-              old_dentry->d_inode->i_nlink = yaffs_GetObjectLinkCount(obj);
+-              d_instantiate(dentry, old_dentry->d_inode);
+-              atomic_inc(&old_dentry->d_inode->i_count);
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_link link count %d i_count %d\n",
+-                      old_dentry->d_inode->i_nlink,
+-                      atomic_read(&old_dentry->d_inode->i_count)));
+-      }
+-
+-      yaffs_GrossUnlock(dev);
+-
+-      if (link)
+-              return 0;
+-
+-      return -EPERM;
+-}
+-
+-static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
+-                              const char *symname)
+-{
+-      yaffs_Object *obj;
+-      yaffs_Device *dev;
+-      uid_t uid = YCRED(current)->fsuid;
+-      gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_symlink\n"));
+-
+-      dev = yaffs_InodeToObject(dir)->myDev;
+-      yaffs_GrossLock(dev);
+-      obj = yaffs_MknodSymLink(yaffs_InodeToObject(dir), dentry->d_name.name,
+-                              S_IFLNK | S_IRWXUGO, uid, gid, symname);
+-      yaffs_GrossUnlock(dev);
+-
+-      if (obj) {
+-              struct inode *inode;
+-
+-              inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
+-              d_instantiate(dentry, inode);
+-              T(YAFFS_TRACE_OS, ("symlink created OK\n"));
+-              return 0;
+-      } else {
+-              T(YAFFS_TRACE_OS, ("symlink not created\n"));
+-      }
+-
+-      return -ENOMEM;
+-}
+-
+-static int yaffs_sync_object(struct file *file, struct dentry *dentry,
+-                              int datasync)
+-{
+-
+-      yaffs_Object *obj;
+-      yaffs_Device *dev;
+-
+-      obj = yaffs_DentryToObject(dentry);
+-
+-      dev = obj->myDev;
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_sync_object\n"));
+-      yaffs_GrossLock(dev);
+-      yaffs_FlushFile(obj, 1);
+-      yaffs_GrossUnlock(dev);
+-      return 0;
+-}
+-
+-/*
+- * The VFS layer already does all the dentry stuff for rename.
+- *
+- * NB: POSIX says you can rename an object over an old object of the same name
+- */
+-static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
+-                      struct inode *new_dir, struct dentry *new_dentry)
+-{
+-      yaffs_Device *dev;
+-      int retVal = YAFFS_FAIL;
+-      yaffs_Object *target;
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_rename\n"));
+-      dev = yaffs_InodeToObject(old_dir)->myDev;
+-
+-      yaffs_GrossLock(dev);
+-
+-      /* Check if the target is an existing directory that is not empty. */
+-      target = yaffs_FindObjectByName(yaffs_InodeToObject(new_dir),
+-                              new_dentry->d_name.name);
+-
+-
+-
+-      if (target && target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
+-              !ylist_empty(&target->variant.directoryVariant.children)) {
+-
+-              T(YAFFS_TRACE_OS, ("target is non-empty dir\n"));
+-
+-              retVal = YAFFS_FAIL;
+-      } else {
+-              /* Now does unlinking internally using shadowing mechanism */
+-              T(YAFFS_TRACE_OS, ("calling yaffs_RenameObject\n"));
+-
+-              retVal = yaffs_RenameObject(yaffs_InodeToObject(old_dir),
+-                              old_dentry->d_name.name,
+-                              yaffs_InodeToObject(new_dir),
+-                              new_dentry->d_name.name);
+-      }
+-      yaffs_GrossUnlock(dev);
+-
+-      if (retVal == YAFFS_OK) {
+-              if (target) {
+-                      new_dentry->d_inode->i_nlink--;
+-                      mark_inode_dirty(new_dentry->d_inode);
+-              }
+-
+-              return 0;
+-      } else {
+-              return -ENOTEMPTY;
+-      }
+-}
+-
+-static int yaffs_setattr(struct dentry *dentry, struct iattr *attr)
+-{
+-      struct inode *inode = dentry->d_inode;
+-      int error;
+-      yaffs_Device *dev;
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_setattr of object %d\n",
+-              yaffs_InodeToObject(inode)->objectId));
+-
+-      error = inode_change_ok(inode, attr);
+-      if (error == 0) {
+-              dev = yaffs_InodeToObject(inode)->myDev;
+-              yaffs_GrossLock(dev);
+-              if (yaffs_SetAttributes(yaffs_InodeToObject(inode), attr) ==
+-                              YAFFS_OK) {
+-                      error = 0;
+-              } else {
+-                      error = -EPERM;
+-              }
+-              yaffs_GrossUnlock(dev);
+-              if (!error)
+-                      error = inode_setattr(inode, attr);
+-      }
+-      return error;
+-}
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf)
+-{
+-      yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev;
+-      struct super_block *sb = dentry->d_sb;
+-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf)
+-{
+-      yaffs_Device *dev = yaffs_SuperToDevice(sb);
+-#else
+-static int yaffs_statfs(struct super_block *sb, struct statfs *buf)
+-{
+-      yaffs_Device *dev = yaffs_SuperToDevice(sb);
+-#endif
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_statfs\n"));
+-
+-      yaffs_GrossLock(dev);
+-
+-      buf->f_type = YAFFS_MAGIC;
+-      buf->f_bsize = sb->s_blocksize;
+-      buf->f_namelen = 255;
+-
+-      if (dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)) {
+-              /* Do this if chunk size is not a power of 2 */
+-
+-              uint64_t bytesInDev;
+-              uint64_t bytesFree;
+-
+-              bytesInDev = ((uint64_t)((dev->endBlock - dev->startBlock + 1))) *
+-                      ((uint64_t)(dev->nChunksPerBlock * dev->nDataBytesPerChunk));
+-
+-              do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */
+-              buf->f_blocks = bytesInDev;
+-
+-              bytesFree  = ((uint64_t)(yaffs_GetNumberOfFreeChunks(dev))) *
+-                      ((uint64_t)(dev->nDataBytesPerChunk));
+-
+-              do_div(bytesFree, sb->s_blocksize);
+-
+-              buf->f_bfree = bytesFree;
+-
+-      } else if (sb->s_blocksize > dev->nDataBytesPerChunk) {
+-
+-              buf->f_blocks =
+-                      (dev->endBlock - dev->startBlock + 1) *
+-                      dev->nChunksPerBlock /
+-                      (sb->s_blocksize / dev->nDataBytesPerChunk);
+-              buf->f_bfree =
+-                      yaffs_GetNumberOfFreeChunks(dev) /
+-                      (sb->s_blocksize / dev->nDataBytesPerChunk);
+-      } else {
+-              buf->f_blocks =
+-                      (dev->endBlock - dev->startBlock + 1) *
+-                      dev->nChunksPerBlock *
+-                      (dev->nDataBytesPerChunk / sb->s_blocksize);
+-
+-              buf->f_bfree =
+-                      yaffs_GetNumberOfFreeChunks(dev) *
+-                      (dev->nDataBytesPerChunk / sb->s_blocksize);
+-      }
+-
+-      buf->f_files = 0;
+-      buf->f_ffree = 0;
+-      buf->f_bavail = buf->f_bfree;
+-
+-      yaffs_GrossUnlock(dev);
+-      return 0;
+-}
+-
+-
+-static int yaffs_do_sync_fs(struct super_block *sb)
+-{
+-
+-      yaffs_Device *dev = yaffs_SuperToDevice(sb);
+-      T(YAFFS_TRACE_OS, ("yaffs_do_sync_fs\n"));
+-
+-      if (sb->s_dirt) {
+-              yaffs_GrossLock(dev);
+-
+-              if (dev) {
+-                      yaffs_FlushEntireDeviceCache(dev);
+-                      yaffs_CheckpointSave(dev);
+-              }
+-
+-              yaffs_GrossUnlock(dev);
+-
+-              sb->s_dirt = 0;
+-      }
+-      return 0;
+-}
+-
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-static void yaffs_write_super(struct super_block *sb)
+-#else
+-static int yaffs_write_super(struct super_block *sb)
+-#endif
+-{
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_write_super\n"));
+-      if (yaffs_auto_checkpoint >= 2)
+-              yaffs_do_sync_fs(sb);
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18))
+-      return 0;
+-#endif
+-}
+-
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-static int yaffs_sync_fs(struct super_block *sb, int wait)
+-#else
+-static int yaffs_sync_fs(struct super_block *sb)
+-#endif
+-{
+-      T(YAFFS_TRACE_OS, ("yaffs_sync_fs\n"));
+-
+-      if (yaffs_auto_checkpoint >= 1)
+-              yaffs_do_sync_fs(sb);
+-
+-      return 0;
+-}
+-
+-#ifdef YAFFS_USE_OWN_IGET
+-
+-static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino)
+-{
+-      struct inode *inode;
+-      yaffs_Object *obj;
+-      yaffs_Device *dev = yaffs_SuperToDevice(sb);
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_iget for %lu\n", ino));
+-
+-      inode = iget_locked(sb, ino);
+-      if (!inode)
+-              return ERR_PTR(-ENOMEM);
+-      if (!(inode->i_state & I_NEW))
+-              return inode;
+-
+-      /* NB This is called as a side effect of other functions, but
+-       * we had to release the lock to prevent deadlocks, so
+-       * need to lock again.
+-       */
+-
+-      yaffs_GrossLock(dev);
+-
+-      obj = yaffs_FindObjectByNumber(dev, inode->i_ino);
+-
+-      yaffs_FillInodeFromObject(inode, obj);
+-
+-      yaffs_GrossUnlock(dev);
+-
+-      unlock_new_inode(inode);
+-      return inode;
+-}
+-
+-#else
+-
+-static void yaffs_read_inode(struct inode *inode)
+-{
+-      /* NB This is called as a side effect of other functions, but
+-       * we had to release the lock to prevent deadlocks, so
+-       * need to lock again.
+-       */
+-
+-      yaffs_Object *obj;
+-      yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb);
+-
+-      T(YAFFS_TRACE_OS,
+-              ("yaffs_read_inode for %d\n", (int)inode->i_ino));
+-
+-      yaffs_GrossLock(dev);
+-
+-      obj = yaffs_FindObjectByNumber(dev, inode->i_ino);
+-
+-      yaffs_FillInodeFromObject(inode, obj);
+-
+-      yaffs_GrossUnlock(dev);
+-}
+-
+-#endif
+-
+-static YLIST_HEAD(yaffs_dev_list);
+-
+-#if 0 /* not used */
+-static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data)
+-{
+-      yaffs_Device    *dev = yaffs_SuperToDevice(sb);
+-
+-      if (*flags & MS_RDONLY) {
+-              struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice;
+-
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_remount_fs: %s: RO\n", dev->name));
+-
+-              yaffs_GrossLock(dev);
+-
+-              yaffs_FlushEntireDeviceCache(dev);
+-
+-              yaffs_CheckpointSave(dev);
+-
+-              if (mtd->sync)
+-                      mtd->sync(mtd);
+-
+-              yaffs_GrossUnlock(dev);
+-      } else {
+-              T(YAFFS_TRACE_OS,
+-                      ("yaffs_remount_fs: %s: RW\n", dev->name));
+-      }
+-
+-      return 0;
+-}
+-#endif
+-
+-static void yaffs_put_super(struct super_block *sb)
+-{
+-      yaffs_Device *dev = yaffs_SuperToDevice(sb);
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_put_super\n"));
+-
+-      yaffs_GrossLock(dev);
+-
+-      yaffs_FlushEntireDeviceCache(dev);
+-
+-      yaffs_CheckpointSave(dev);
+-
+-      if (dev->putSuperFunc)
+-              dev->putSuperFunc(sb);
+-
+-      yaffs_Deinitialise(dev);
+-
+-      yaffs_GrossUnlock(dev);
+-
+-      /* we assume this is protected by lock_kernel() in mount/umount */
+-      ylist_del(&dev->devList);
+-
+-      if (dev->spareBuffer) {
+-              YFREE(dev->spareBuffer);
+-              dev->spareBuffer = NULL;
+-      }
+-
+-      kfree(dev);
+-}
+-
+-
+-static void yaffs_MTDPutSuper(struct super_block *sb)
+-{
+-      struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice;
+-
+-      if (mtd->sync)
+-              mtd->sync(mtd);
+-
+-      put_mtd_device(mtd);
+-}
+-
+-
+-static void yaffs_MarkSuperBlockDirty(void *vsb)
+-{
+-      struct super_block *sb = (struct super_block *)vsb;
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_MarkSuperBlockDirty() sb = %p\n", sb));
+-      if (sb)
+-              sb->s_dirt = 1;
+-}
+-
+-typedef struct {
+-      int inband_tags;
+-      int skip_checkpoint_read;
+-      int skip_checkpoint_write;
+-      int no_cache;
+-} yaffs_options;
+-
+-#define MAX_OPT_LEN 20
+-static int yaffs_parse_options(yaffs_options *options, const char *options_str)
+-{
+-      char cur_opt[MAX_OPT_LEN + 1];
+-      int p;
+-      int error = 0;
+-
+-      /* Parse through the options which is a comma seperated list */
+-
+-      while (options_str && *options_str && !error) {
+-              memset(cur_opt, 0, MAX_OPT_LEN + 1);
+-              p = 0;
+-
+-              while (*options_str && *options_str != ',') {
+-                      if (p < MAX_OPT_LEN) {
+-                              cur_opt[p] = *options_str;
+-                              p++;
+-                      }
+-                      options_str++;
+-              }
+-
+-              if (!strcmp(cur_opt, "inband-tags"))
+-                      options->inband_tags = 1;
+-              else if (!strcmp(cur_opt, "no-cache"))
+-                      options->no_cache = 1;
+-              else if (!strcmp(cur_opt, "no-checkpoint-read"))
+-                      options->skip_checkpoint_read = 1;
+-              else if (!strcmp(cur_opt, "no-checkpoint-write"))
+-                      options->skip_checkpoint_write = 1;
+-              else if (!strcmp(cur_opt, "no-checkpoint")) {
+-                      options->skip_checkpoint_read = 1;
+-                      options->skip_checkpoint_write = 1;
+-              } else {
+-                      printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",
+-                                      cur_opt);
+-                      error = 1;
+-              }
+-      }
+-
+-      return error;
+-}
+-
+-static struct super_block *yaffs_internal_read_super(int yaffsVersion,
+-                                              struct super_block *sb,
+-                                              void *data, int silent)
+-{
+-      int nBlocks;
+-      struct inode *inode = NULL;
+-      struct dentry *root;
+-      yaffs_Device *dev = 0;
+-      char devname_buf[BDEVNAME_SIZE + 1];
+-      struct mtd_info *mtd;
+-      int err;
+-      char *data_str = (char *)data;
+-
+-      yaffs_options options;
+-
+-      sb->s_magic = YAFFS_MAGIC;
+-      sb->s_op = &yaffs_super_ops;
+-      sb->s_flags |= MS_NOATIME;
+-
+-      if (!sb)
+-              printk(KERN_INFO "yaffs: sb is NULL\n");
+-      else if (!sb->s_dev)
+-              printk(KERN_INFO "yaffs: sb->s_dev is NULL\n");
+-      else if (!yaffs_devname(sb, devname_buf))
+-              printk(KERN_INFO "yaffs: devname is NULL\n");
+-      else
+-              printk(KERN_INFO "yaffs: dev is %d name is \"%s\"\n",
+-                     sb->s_dev,
+-                     yaffs_devname(sb, devname_buf));
+-
+-      if (!data_str)
+-              data_str = "";
+-
+-      printk(KERN_INFO "yaffs: passed flags \"%s\"\n", data_str);
+-
+-      memset(&options, 0, sizeof(options));
+-
+-      if (yaffs_parse_options(&options, data_str)) {
+-              /* Option parsing failed */
+-              return NULL;
+-      }
+-
+-
+-      sb->s_blocksize = PAGE_CACHE_SIZE;
+-      sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
+-      T(YAFFS_TRACE_OS, ("yaffs_read_super: Using yaffs%d\n", yaffsVersion));
+-      T(YAFFS_TRACE_OS,
+-        ("yaffs_read_super: block size %d\n", (int)(sb->s_blocksize)));
+-
+-#ifdef CONFIG_YAFFS_DISABLE_WRITE_VERIFY
+-      T(YAFFS_TRACE_OS,
+-        ("yaffs: Write verification disabled. All guarantees "
+-         "null and void\n"));
+-#endif
+-
+-      T(YAFFS_TRACE_ALWAYS, ("yaffs: Attempting MTD mount on %u.%u, "
+-                             "\"%s\"\n",
+-                             MAJOR(sb->s_dev), MINOR(sb->s_dev),
+-                             yaffs_devname(sb, devname_buf)));
+-
+-      /* Check it's an mtd device..... */
+-      if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR)
+-              return NULL;    /* This isn't an mtd device */
+-
+-      /* Get the device */
+-      mtd = get_mtd_device(NULL, MINOR(sb->s_dev));
+-      if (!mtd) {
+-              T(YAFFS_TRACE_ALWAYS,
+-                ("yaffs: MTD device #%u doesn't appear to exist\n",
+-                 MINOR(sb->s_dev)));
+-              return NULL;
+-      }
+-      /* Check it's NAND */
+-      if (mtd->type != MTD_NANDFLASH) {
+-              T(YAFFS_TRACE_ALWAYS,
+-                ("yaffs: MTD device is not NAND it's type %d\n", mtd->type));
+-              return NULL;
+-      }
+-
+-      T(YAFFS_TRACE_OS, (" erase %p\n", mtd->erase));
+-      T(YAFFS_TRACE_OS, (" read %p\n", mtd->read));
+-      T(YAFFS_TRACE_OS, (" write %p\n", mtd->write));
+-      T(YAFFS_TRACE_OS, (" readoob %p\n", mtd->read_oob));
+-      T(YAFFS_TRACE_OS, (" writeoob %p\n", mtd->write_oob));
+-      T(YAFFS_TRACE_OS, (" block_isbad %p\n", mtd->block_isbad));
+-      T(YAFFS_TRACE_OS, (" block_markbad %p\n", mtd->block_markbad));
+-      T(YAFFS_TRACE_OS, (" %s %d\n", WRITE_SIZE_STR, WRITE_SIZE(mtd)));
+-      T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize));
+-      T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize));
+-#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
+-      T(YAFFS_TRACE_OS, (" size %u\n", mtd->size));
+-#else
+-      T(YAFFS_TRACE_OS, (" size %lld\n", mtd->size));
+-#endif
+-
+-#ifdef CONFIG_YAFFS_AUTO_YAFFS2
+-
+-      if (yaffsVersion == 1 && WRITE_SIZE(mtd) >= 2048) {
+-              T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs2\n"));
+-              yaffsVersion = 2;
+-      }
+-
+-      /* Added NCB 26/5/2006 for completeness */
+-      if (yaffsVersion == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) {
+-              T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs1\n"));
+-              yaffsVersion = 1;
+-      }
+-
+-#endif
+-
+-      if (yaffsVersion == 2) {
+-              /* Check for version 2 style functions */
+-              if (!mtd->erase ||
+-                  !mtd->block_isbad ||
+-                  !mtd->block_markbad ||
+-                  !mtd->read ||
+-                  !mtd->write ||
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-                  !mtd->read_oob || !mtd->write_oob) {
+-#else
+-                  !mtd->write_ecc ||
+-                  !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) {
+-#endif
+-                      T(YAFFS_TRACE_ALWAYS,
+-                        ("yaffs: MTD device does not support required "
+-                         "functions\n"));;
+-                      return NULL;
+-              }
+-
+-              if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
+-                  mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) &&
+-                  !options.inband_tags) {
+-                      T(YAFFS_TRACE_ALWAYS,
+-                        ("yaffs: MTD device does not have the "
+-                         "right page sizes\n"));
+-                      return NULL;
+-              }
+-      } else {
+-              /* Check for V1 style functions */
+-              if (!mtd->erase ||
+-                  !mtd->read ||
+-                  !mtd->write ||
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-                  !mtd->read_oob || !mtd->write_oob) {
+-#else
+-                  !mtd->write_ecc ||
+-                  !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) {
+-#endif
+-                      T(YAFFS_TRACE_ALWAYS,
+-                        ("yaffs: MTD device does not support required "
+-                         "functions\n"));;
+-                      return NULL;
+-              }
+-
+-              if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK ||
+-                  mtd->oobsize != YAFFS_BYTES_PER_SPARE) {
+-                      T(YAFFS_TRACE_ALWAYS,
+-                        ("yaffs: MTD device does not support have the "
+-                         "right page sizes\n"));
+-                      return NULL;
+-              }
+-      }
+-
+-      /* OK, so if we got here, we have an MTD that's NAND and looks
+-       * like it has the right capabilities
+-       * Set the yaffs_Device up for mtd
+-       */
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-      sb->s_fs_info = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL);
+-#else
+-      sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL);
+-#endif
+-      if (!dev) {
+-              /* Deep shit could not allocate device structure */
+-              T(YAFFS_TRACE_ALWAYS,
+-                ("yaffs_read_super: Failed trying to allocate "
+-                 "yaffs_Device. \n"));
+-              return NULL;
+-      }
+-
+-      memset(dev, 0, sizeof(yaffs_Device));
+-      dev->genericDevice = mtd;
+-      dev->name = mtd->name;
+-
+-      /* Set up the memory size parameters.... */
+-
+-      nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK));
+-
+-      dev->startBlock = 0;
+-      dev->endBlock = nBlocks - 1;
+-      dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
+-      dev->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+-      dev->nReservedBlocks = 5;
+-      dev->nShortOpCaches = (options.no_cache) ? 0 : 10;
+-      dev->inbandTags = options.inband_tags;
+-
+-      /* ... and the functions. */
+-      if (yaffsVersion == 2) {
+-              dev->writeChunkWithTagsToNAND =
+-                  nandmtd2_WriteChunkWithTagsToNAND;
+-              dev->readChunkWithTagsFromNAND =
+-                  nandmtd2_ReadChunkWithTagsFromNAND;
+-              dev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad;
+-              dev->queryNANDBlock = nandmtd2_QueryNANDBlock;
+-              dev->spareBuffer = YMALLOC(mtd->oobsize);
+-              dev->isYaffs2 = 1;
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-              dev->totalBytesPerChunk = mtd->writesize;
+-              dev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
+-#else
+-              dev->totalBytesPerChunk = mtd->oobblock;
+-              dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
+-#endif
+-              nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize);
+-
+-              dev->startBlock = 0;
+-              dev->endBlock = nBlocks - 1;
+-      } else {
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-              /* use the MTD interface in yaffs_mtdif1.c */
+-              dev->writeChunkWithTagsToNAND =
+-                      nandmtd1_WriteChunkWithTagsToNAND;
+-              dev->readChunkWithTagsFromNAND =
+-                      nandmtd1_ReadChunkWithTagsFromNAND;
+-              dev->markNANDBlockBad = nandmtd1_MarkNANDBlockBad;
+-              dev->queryNANDBlock = nandmtd1_QueryNANDBlock;
+-#else
+-              dev->writeChunkToNAND = nandmtd_WriteChunkToNAND;
+-              dev->readChunkFromNAND = nandmtd_ReadChunkFromNAND;
+-#endif
+-              dev->isYaffs2 = 0;
+-      }
+-      /* ... and common functions */
+-      dev->eraseBlockInNAND = nandmtd_EraseBlockInNAND;
+-      dev->initialiseNAND = nandmtd_InitialiseNAND;
+-
+-      dev->putSuperFunc = yaffs_MTDPutSuper;
+-
+-      dev->superBlock = (void *)sb;
+-      dev->markSuperBlockDirty = yaffs_MarkSuperBlockDirty;
+-
+-
+-#ifndef CONFIG_YAFFS_DOES_ECC
+-      dev->useNANDECC = 1;
+-#endif
+-
+-#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES
+-      dev->wideTnodesDisabled = 1;
+-#endif
+-
+-      dev->skipCheckpointRead = options.skip_checkpoint_read;
+-      dev->skipCheckpointWrite = options.skip_checkpoint_write;
+-
+-      /* we assume this is protected by lock_kernel() in mount/umount */
+-      ylist_add_tail(&dev->devList, &yaffs_dev_list);
+-
+-      init_MUTEX(&dev->grossLock);
+-
+-      yaffs_GrossLock(dev);
+-
+-      err = yaffs_GutsInitialise(dev);
+-
+-      T(YAFFS_TRACE_OS,
+-        ("yaffs_read_super: guts initialised %s\n",
+-         (err == YAFFS_OK) ? "OK" : "FAILED"));
+-
+-      /* Release lock before yaffs_get_inode() */
+-      yaffs_GrossUnlock(dev);
+-
+-      /* Create root inode */
+-      if (err == YAFFS_OK)
+-              inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0,
+-                                      yaffs_Root(dev));
+-
+-      if (!inode)
+-              return NULL;
+-
+-      inode->i_op = &yaffs_dir_inode_operations;
+-      inode->i_fop = &yaffs_dir_operations;
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_read_super: got root inode\n"));
+-
+-      root = d_alloc_root(inode);
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_read_super: d_alloc_root done\n"));
+-
+-      if (!root) {
+-              iput(inode);
+-              return NULL;
+-      }
+-      sb->s_root = root;
+-      sb->s_dirt = !dev->isCheckpointed;
+-      T(YAFFS_TRACE_ALWAYS,
+-        ("yaffs_read_super: isCheckpointed %d\n", dev->isCheckpointed));
+-
+-      T(YAFFS_TRACE_OS, ("yaffs_read_super: done\n"));
+-      return sb;
+-}
+-
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data,
+-                                       int silent)
+-{
+-      return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL;
+-}
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-static int yaffs_read_super(struct file_system_type *fs,
+-                          int flags, const char *dev_name,
+-                          void *data, struct vfsmount *mnt)
+-{
+-
+-      return get_sb_bdev(fs, flags, dev_name, data,
+-                         yaffs_internal_read_super_mtd, mnt);
+-}
+-#else
+-static struct super_block *yaffs_read_super(struct file_system_type *fs,
+-                                          int flags, const char *dev_name,
+-                                          void *data)
+-{
+-
+-      return get_sb_bdev(fs, flags, dev_name, data,
+-                         yaffs_internal_read_super_mtd);
+-}
+-#endif
+-
+-static struct file_system_type yaffs_fs_type = {
+-      .owner = THIS_MODULE,
+-      .name = "yaffs",
+-      .get_sb = yaffs_read_super,
+-      .kill_sb = kill_block_super,
+-      .fs_flags = FS_REQUIRES_DEV,
+-};
+-#else
+-static struct super_block *yaffs_read_super(struct super_block *sb, void *data,
+-                                          int silent)
+-{
+-      return yaffs_internal_read_super(1, sb, data, silent);
+-}
+-
+-static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super,
+-                    FS_REQUIRES_DEV);
+-#endif
+-
+-
+-#ifdef CONFIG_YAFFS_YAFFS2
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data,
+-                                        int silent)
+-{
+-      return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL;
+-}
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-static int yaffs2_read_super(struct file_system_type *fs,
+-                      int flags, const char *dev_name, void *data,
+-                      struct vfsmount *mnt)
+-{
+-      return get_sb_bdev(fs, flags, dev_name, data,
+-                      yaffs2_internal_read_super_mtd, mnt);
+-}
+-#else
+-static struct super_block *yaffs2_read_super(struct file_system_type *fs,
+-                                           int flags, const char *dev_name,
+-                                           void *data)
+-{
+-
+-      return get_sb_bdev(fs, flags, dev_name, data,
+-                         yaffs2_internal_read_super_mtd);
+-}
+-#endif
+-
+-static struct file_system_type yaffs2_fs_type = {
+-      .owner = THIS_MODULE,
+-      .name = "yaffs2",
+-      .get_sb = yaffs2_read_super,
+-      .kill_sb = kill_block_super,
+-      .fs_flags = FS_REQUIRES_DEV,
+-};
+-#else
+-static struct super_block *yaffs2_read_super(struct super_block *sb,
+-                                           void *data, int silent)
+-{
+-      return yaffs_internal_read_super(2, sb, data, silent);
+-}
+-
+-static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super,
+-                    FS_REQUIRES_DEV);
+-#endif
+-
+-#endif                                /* CONFIG_YAFFS_YAFFS2 */
+-
+-static struct proc_dir_entry *my_proc_entry;
+-
+-static char *yaffs_dump_dev(char *buf, yaffs_Device * dev)
+-{
+-      buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock);
+-      buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock);
+-      buf += sprintf(buf, "totalBytesPerChunk. %d\n", dev->totalBytesPerChunk);
+-      buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk);
+-      buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits);
+-      buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize);
+-      buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks);
+-      buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks);
+-      buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint);
+-      buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated);
+-      buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes);
+-      buf += sprintf(buf, "nObjectsCreated.... %d\n", dev->nObjectsCreated);
+-      buf += sprintf(buf, "nFreeObjects....... %d\n", dev->nFreeObjects);
+-      buf += sprintf(buf, "nFreeChunks........ %d\n", dev->nFreeChunks);
+-      buf += sprintf(buf, "nPageWrites........ %d\n", dev->nPageWrites);
+-      buf += sprintf(buf, "nPageReads......... %d\n", dev->nPageReads);
+-      buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures);
+-      buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies);
+-      buf += sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections);
+-      buf += sprintf(buf, "passiveGCs......... %d\n",
+-                  dev->passiveGarbageCollections);
+-      buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites);
+-      buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches);
+-      buf += sprintf(buf, "nRetireBlocks...... %d\n", dev->nRetiredBlocks);
+-      buf += sprintf(buf, "eccFixed........... %d\n", dev->eccFixed);
+-      buf += sprintf(buf, "eccUnfixed......... %d\n", dev->eccUnfixed);
+-      buf += sprintf(buf, "tagsEccFixed....... %d\n", dev->tagsEccFixed);
+-      buf += sprintf(buf, "tagsEccUnfixed..... %d\n", dev->tagsEccUnfixed);
+-      buf += sprintf(buf, "cacheHits.......... %d\n", dev->cacheHits);
+-      buf += sprintf(buf, "nDeletedFiles...... %d\n", dev->nDeletedFiles);
+-      buf += sprintf(buf, "nUnlinkedFiles..... %d\n", dev->nUnlinkedFiles);
+-      buf +=
+-          sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions);
+-      buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC);
+-      buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2);
+-      buf += sprintf(buf, "inbandTags......... %d\n", dev->inbandTags);
+-
+-      return buf;
+-}
+-
+-static int yaffs_proc_read(char *page,
+-                         char **start,
+-                         off_t offset, int count, int *eof, void *data)
+-{
+-      struct ylist_head *item;
+-      char *buf = page;
+-      int step = offset;
+-      int n = 0;
+-
+-      /* Get proc_file_read() to step 'offset' by one on each sucessive call.
+-       * We use 'offset' (*ppos) to indicate where we are in devList.
+-       * This also assumes the user has posted a read buffer large
+-       * enough to hold the complete output; but that's life in /proc.
+-       */
+-
+-      *(int *)start = 1;
+-
+-      /* Print header first */
+-      if (step == 0) {
+-              buf += sprintf(buf, "YAFFS built:" __DATE__ " " __TIME__
+-                             "\n%s\n%s\n", yaffs_fs_c_version,
+-                             yaffs_guts_c_version);
+-      }
+-
+-      /* hold lock_kernel while traversing yaffs_dev_list */
+-      lock_kernel();
+-
+-      /* Locate and print the Nth entry.  Order N-squared but N is small. */
+-      ylist_for_each(item, &yaffs_dev_list) {
+-              yaffs_Device *dev = ylist_entry(item, yaffs_Device, devList);
+-              if (n < step) {
+-                      n++;
+-                      continue;
+-              }
+-              buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->name);
+-              buf = yaffs_dump_dev(buf, dev);
+-              break;
+-      }
+-      unlock_kernel();
+-
+-      return buf - page < count ? buf - page : count;
+-}
+-
+-/**
+- * Set the verbosity of the warnings and error messages.
+- *
+- * Note that the names can only be a..z or _ with the current code.
+- */
+-
+-static struct {
+-      char *mask_name;
+-      unsigned mask_bitfield;
+-} mask_flags[] = {
+-      {"allocate", YAFFS_TRACE_ALLOCATE},
+-      {"always", YAFFS_TRACE_ALWAYS},
+-      {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS},
+-      {"buffers", YAFFS_TRACE_BUFFERS},
+-      {"bug", YAFFS_TRACE_BUG},
+-      {"checkpt", YAFFS_TRACE_CHECKPOINT},
+-      {"deletion", YAFFS_TRACE_DELETION},
+-      {"erase", YAFFS_TRACE_ERASE},
+-      {"error", YAFFS_TRACE_ERROR},
+-      {"gc_detail", YAFFS_TRACE_GC_DETAIL},
+-      {"gc", YAFFS_TRACE_GC},
+-      {"mtd", YAFFS_TRACE_MTD},
+-      {"nandaccess", YAFFS_TRACE_NANDACCESS},
+-      {"os", YAFFS_TRACE_OS},
+-      {"scan_debug", YAFFS_TRACE_SCAN_DEBUG},
+-      {"scan", YAFFS_TRACE_SCAN},
+-      {"tracing", YAFFS_TRACE_TRACING},
+-
+-      {"verify", YAFFS_TRACE_VERIFY},
+-      {"verify_nand", YAFFS_TRACE_VERIFY_NAND},
+-      {"verify_full", YAFFS_TRACE_VERIFY_FULL},
+-      {"verify_all", YAFFS_TRACE_VERIFY_ALL},
+-
+-      {"write", YAFFS_TRACE_WRITE},
+-      {"all", 0xffffffff},
+-      {"none", 0},
+-      {NULL, 0},
+-};
+-
+-#define MAX_MASK_NAME_LENGTH 40
+-static int yaffs_proc_write(struct file *file, const char *buf,
+-                                       unsigned long count, void *data)
+-{
+-      unsigned rg = 0, mask_bitfield;
+-      char *end;
+-      char *mask_name;
+-      const char *x;
+-      char substring[MAX_MASK_NAME_LENGTH + 1];
+-      int i;
+-      int done = 0;
+-      int add, len = 0;
+-      int pos = 0;
+-
+-      rg = yaffs_traceMask;
+-
+-      while (!done && (pos < count)) {
+-              done = 1;
+-              while ((pos < count) && isspace(buf[pos]))
+-                      pos++;
+-
+-              switch (buf[pos]) {
+-              case '+':
+-              case '-':
+-              case '=':
+-                      add = buf[pos];
+-                      pos++;
+-                      break;
+-
+-              default:
+-                      add = ' ';
+-                      break;
+-              }
+-              mask_name = NULL;
+-
+-              mask_bitfield = simple_strtoul(buf + pos, &end, 0);
+-
+-              if (end > buf + pos) {
+-                      mask_name = "numeral";
+-                      len = end - (buf + pos);
+-                      pos += len;
+-                      done = 0;
+-              } else {
+-                      for (x = buf + pos, i = 0;
+-                          (*x == '_' || (*x >= 'a' && *x <= 'z')) &&
+-                          i < MAX_MASK_NAME_LENGTH; x++, i++, pos++)
+-                              substring[i] = *x;
+-                      substring[i] = '\0';
+-
+-                      for (i = 0; mask_flags[i].mask_name != NULL; i++) {
+-                              if (strcmp(substring, mask_flags[i].mask_name) == 0) {
+-                                      mask_name = mask_flags[i].mask_name;
+-                                      mask_bitfield = mask_flags[i].mask_bitfield;
+-                                      done = 0;
+-                                      break;
+-                              }
+-                      }
+-              }
+-
+-              if (mask_name != NULL) {
+-                      done = 0;
+-                      switch (add) {
+-                      case '-':
+-                              rg &= ~mask_bitfield;
+-                              break;
+-                      case '+':
+-                              rg |= mask_bitfield;
+-                              break;
+-                      case '=':
+-                              rg = mask_bitfield;
+-                              break;
+-                      default:
+-                              rg |= mask_bitfield;
+-                              break;
+-                      }
+-              }
+-      }
+-
+-      yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS;
+-
+-      printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_traceMask);
+-
+-      if (rg & YAFFS_TRACE_ALWAYS) {
+-              for (i = 0; mask_flags[i].mask_name != NULL; i++) {
+-                      char flag;
+-                      flag = ((rg & mask_flags[i].mask_bitfield) == mask_flags[i].mask_bitfield) ? '+' : '-';
+-                      printk(KERN_DEBUG "%c%s\n", flag, mask_flags[i].mask_name);
+-              }
+-      }
+-
+-      return count;
+-}
+-
+-/* Stuff to handle installation of file systems */
+-struct file_system_to_install {
+-      struct file_system_type *fst;
+-      int installed;
+-};
+-
+-static struct file_system_to_install fs_to_install[] = {
+-      {&yaffs_fs_type, 0},
+-      {&yaffs2_fs_type, 0},
+-      {NULL, 0}
+-};
+-
+-static int __init init_yaffs_fs(void)
+-{
+-      int error = 0;
+-      struct file_system_to_install *fsinst;
+-
+-      T(YAFFS_TRACE_ALWAYS,
+-        ("yaffs " __DATE__ " " __TIME__ " Installing. \n"));
+-
+-      /* Install the proc_fs entry */
+-      my_proc_entry = create_proc_entry("yaffs",
+-                                             S_IRUGO | S_IFREG,
+-                                             YPROC_ROOT);
+-
+-      if (my_proc_entry) {
+-              my_proc_entry->write_proc = yaffs_proc_write;
+-              my_proc_entry->read_proc = yaffs_proc_read;
+-              my_proc_entry->data = NULL;
+-      } else
+-              return -ENOMEM;
+-
+-      /* Now add the file system entries */
+-
+-      fsinst = fs_to_install;
+-
+-      while (fsinst->fst && !error) {
+-              error = register_filesystem(fsinst->fst);
+-              if (!error)
+-                      fsinst->installed = 1;
+-              fsinst++;
+-      }
+-
+-      /* Any errors? uninstall  */
+-      if (error) {
+-              fsinst = fs_to_install;
+-
+-              while (fsinst->fst) {
+-                      if (fsinst->installed) {
+-                              unregister_filesystem(fsinst->fst);
+-                              fsinst->installed = 0;
+-                      }
+-                      fsinst++;
+-              }
+-      }
+-
+-      return error;
+-}
+-
+-static void __exit exit_yaffs_fs(void)
+-{
+-
+-      struct file_system_to_install *fsinst;
+-
+-      T(YAFFS_TRACE_ALWAYS, ("yaffs " __DATE__ " " __TIME__
+-                             " removing. \n"));
+-
+-      remove_proc_entry("yaffs", YPROC_ROOT);
+-
+-      fsinst = fs_to_install;
+-
+-      while (fsinst->fst) {
+-              if (fsinst->installed) {
+-                      unregister_filesystem(fsinst->fst);
+-                      fsinst->installed = 0;
+-              }
+-              fsinst++;
+-      }
+-}
+-
+-module_init(init_yaffs_fs)
+-module_exit(exit_yaffs_fs)
+-
+-MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system");
+-MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2006");
+-MODULE_LICENSE("GPL");
+--- a/fs/yaffs2/yaffs_getblockinfo.h
++++ b/fs/yaffs2/yaffs_getblockinfo.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -17,18 +17,19 @@
+ #define __YAFFS_GETBLOCKINFO_H__
+ 
+ #include "yaffs_guts.h"
++#include "yaffs_trace.h"
+ 
+ /* Function to manipulate block info */
+-static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk)
++static Y_INLINE yaffs_block_info_t *yaffs_get_block_info(yaffs_dev_t * dev, int blk)
+ {
+-      if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
++      if (blk < dev->internal_start_block || blk > dev->internal_end_block) {
+               T(YAFFS_TRACE_ERROR,
+                 (TSTR
+                  ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR),
+                  blk));
+               YBUG();
+       }
+-      return &dev->blockInfo[blk - dev->internalStartBlock];
++      return &dev->block_info[blk - dev->internal_start_block];
+ }
+ 
+ #endif
+--- a/fs/yaffs2/yaffs_guts.c
++++ b/fs/yaffs2/yaffs_guts.c
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -10,11 +10,8 @@
+  * it under the terms of the GNU General Public License version 2 as
+  * published by the Free Software Foundation.
+  */
+-
+-const char *yaffs_guts_c_version =
+-    "$Id: yaffs_guts.c,v 1.82 2009-03-09 04:24:17 charles Exp $";
+-
+ #include "yportenv.h"
++#include "yaffs_trace.h"
+ 
+ #include "yaffsinterface.h"
+ #include "yaffs_guts.h"
+@@ -22,118 +19,109 @@ const char *yaffs_guts_c_version =
+ #include "yaffs_getblockinfo.h"
+ 
+ #include "yaffs_tagscompat.h"
+-#ifndef CONFIG_YAFFS_USE_OWN_SORT
+-#include "yaffs_qsort.h"
+-#endif
++
+ #include "yaffs_nand.h"
+ 
+-#include "yaffs_checkptrw.h"
++#include "yaffs_yaffs1.h"
++#include "yaffs_yaffs2.h"
++#include "yaffs_bitmap.h"
++#include "yaffs_verify.h"
+ 
+ #include "yaffs_nand.h"
+ #include "yaffs_packedtags2.h"
+ 
++#include "yaffs_nameval.h"
++#include "yaffs_allocator.h"
+ 
+-#define YAFFS_PASSIVE_GC_CHUNKS 2
++/* Note YAFFS_GC_GOOD_ENOUGH must be <= YAFFS_GC_PASSIVE_THRESHOLD */
++#define YAFFS_GC_GOOD_ENOUGH 2
++#define YAFFS_GC_PASSIVE_THRESHOLD 4
+ 
+ #include "yaffs_ecc.h"
+ 
+ 
++
+ /* Robustification (if it ever comes about...) */
+-static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND);
+-static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND,
++static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block);
++static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk,
+               int erasedOk);
+-static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
++static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk,
+                               const __u8 *data,
+-                              const yaffs_ExtendedTags *tags);
+-static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
+-                              const yaffs_ExtendedTags *tags);
++                              const yaffs_ext_tags *tags);
++static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk,
++                              const yaffs_ext_tags *tags);
+ 
+ /* Other local prototypes */
+-static int yaffs_UnlinkObject(yaffs_Object *obj);
+-static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj);
+-
+-static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList);
++static void yaffs_update_parent(yaffs_obj_t *obj);
++static int yaffs_unlink_obj(yaffs_obj_t *obj);
++static int yaffs_obj_cache_dirty(yaffs_obj_t *obj);
+ 
+-static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device *dev,
++static int yaffs_write_new_chunk(yaffs_dev_t *dev,
+                                       const __u8 *buffer,
+-                                      yaffs_ExtendedTags *tags,
++                                      yaffs_ext_tags *tags,
+                                       int useReserve);
+-static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
+-                              int chunkInNAND, int inScan);
+ 
+-static yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
+-                                      yaffs_ObjectType type);
+-static void yaffs_AddObjectToDirectory(yaffs_Object *directory,
+-                              yaffs_Object *obj);
+-static int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name,
+-                              int force, int isShrink, int shadows);
+-static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj);
+-static int yaffs_CheckStructures(void);
+-static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
+-                      int chunkOffset, int *limit);
+-static int yaffs_DoGenericObjectDeletion(yaffs_Object *in);
+-
+-static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device *dev, int blockNo);
+ 
++static yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number,
++                                      yaffs_obj_type type);
+ 
+-static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
+-                              int chunkInNAND);
+ 
+-static int yaffs_UnlinkWorker(yaffs_Object *obj);
++static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod);
+ 
+-static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId,
+-                      int chunkInObject);
++static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj);
++static int yaffs_check_structures(void);
++static int yaffs_generic_obj_del(yaffs_obj_t *in);
++
++static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev,
++                              int nand_chunk);
+ 
+-static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve,
+-                              yaffs_BlockInfo **blockUsedPtr);
++static int yaffs_unlink_worker(yaffs_obj_t *obj);
+ 
+-static void yaffs_VerifyFreeChunks(yaffs_Device *dev);
++static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id,
++                      int chunkInObject);
+ 
+-static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in);
++static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve,
++                              yaffs_block_info_t **blockUsedPtr);
+ 
+-static void yaffs_VerifyDirectory(yaffs_Object *directory);
+-#ifdef YAFFS_PARANOID
+-static int yaffs_CheckFileSanity(yaffs_Object *in);
+-#else
+-#define yaffs_CheckFileSanity(in)
+-#endif
++static void yaffs_check_obj_details_loaded(yaffs_obj_t *in);
++
++static void yaffs_invalidate_whole_cache(yaffs_obj_t *in);
++static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id);
+ 
+-static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in);
+-static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId);
++static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk,
++                              yaffs_ext_tags *tags);
+ 
+-static void yaffs_InvalidateCheckpoint(yaffs_Device *dev);
++static int yaffs_verify_chunk_written(yaffs_dev_t *dev,
++                                      int nand_chunk,
++                                      const __u8 *data,
++                                      yaffs_ext_tags *tags);
+ 
+-static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode,
+-                              yaffs_ExtendedTags *tags);
+ 
+-static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
+-              unsigned pos);
+-static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev,
+-                                      yaffs_FileStructure *fStruct,
+-                                      __u32 chunkId);
++static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize);
++static void yaffs_load_oh_from_name(yaffs_dev_t *dev,YCHAR *ohName, const YCHAR *name);
+ 
+ 
+ /* Function to calculate chunk and offset */
+ 
+-static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, int *chunkOut,
++static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunkOut,
+               __u32 *offsetOut)
+ {
+       int chunk;
+       __u32 offset;
+ 
+-      chunk  = (__u32)(addr >> dev->chunkShift);
++      chunk  = (__u32)(addr >> dev->chunk_shift);
+ 
+-      if (dev->chunkDiv == 1) {
++      if (dev->chunk_div == 1) {
+               /* easy power of 2 case */
+-              offset = (__u32)(addr & dev->chunkMask);
++              offset = (__u32)(addr & dev->chunk_mask);
+       } else {
+               /* Non power-of-2 case */
+ 
+               loff_t chunkBase;
+ 
+-              chunk /= dev->chunkDiv;
++              chunk /= dev->chunk_div;
+ 
+-              chunkBase = ((loff_t)chunk) * dev->nDataBytesPerChunk;
++              chunkBase = ((loff_t)chunk) * dev->data_bytes_per_chunk;
+               offset = (__u32)(addr - chunkBase);
+       }
+ 
+@@ -172,7 +160,7 @@ static __u32 ShiftsGE(__u32 x)
+ 
+ static __u32 Shifts(__u32 x)
+ {
+-      int nShifts;
++      __u32 nShifts;
+ 
+       nShifts =  0;
+ 
+@@ -193,49 +181,49 @@ static __u32 Shifts(__u32 x)
+  * Temporary buffer manipulations.
+  */
+ 
+-static int yaffs_InitialiseTempBuffers(yaffs_Device *dev)
++static int yaffs_init_tmp_buffers(yaffs_dev_t *dev)
+ {
+       int i;
+       __u8 *buf = (__u8 *)1;
+ 
+-      memset(dev->tempBuffer, 0, sizeof(dev->tempBuffer));
++      memset(dev->temp_buffer, 0, sizeof(dev->temp_buffer));
+ 
+       for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) {
+-              dev->tempBuffer[i].line = 0;    /* not in use */
+-              dev->tempBuffer[i].buffer = buf =
+-                  YMALLOC_DMA(dev->totalBytesPerChunk);
++              dev->temp_buffer[i].line = 0;   /* not in use */
++              dev->temp_buffer[i].buffer = buf =
++                  YMALLOC_DMA(dev->param.total_bytes_per_chunk);
+       }
+ 
+       return buf ? YAFFS_OK : YAFFS_FAIL;
+ }
+ 
+-__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo)
++__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no)
+ {
+       int i, j;
+ 
+-      dev->tempInUse++;
+-      if (dev->tempInUse > dev->maxTemp)
+-              dev->maxTemp = dev->tempInUse;
++      dev->temp_in_use++;
++      if (dev->temp_in_use > dev->max_temp)
++              dev->max_temp = dev->temp_in_use;
+ 
+       for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
+-              if (dev->tempBuffer[i].line == 0) {
+-                      dev->tempBuffer[i].line = lineNo;
+-                      if ((i + 1) > dev->maxTemp) {
+-                              dev->maxTemp = i + 1;
++              if (dev->temp_buffer[i].line == 0) {
++                      dev->temp_buffer[i].line = line_no;
++                      if ((i + 1) > dev->max_temp) {
++                              dev->max_temp = i + 1;
+                               for (j = 0; j <= i; j++)
+-                                      dev->tempBuffer[j].maxLine =
+-                                          dev->tempBuffer[j].line;
++                                      dev->temp_buffer[j].max_line =
++                                          dev->temp_buffer[j].line;
+                       }
+ 
+-                      return dev->tempBuffer[i].buffer;
++                      return dev->temp_buffer[i].buffer;
+               }
+       }
+ 
+       T(YAFFS_TRACE_BUFFERS,
+         (TSTR("Out of temp buffers at line %d, other held by lines:"),
+-         lineNo));
++         line_no));
+       for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++)
+-              T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->tempBuffer[i].line));
++              T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->temp_buffer[i].line));
+ 
+       T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR)));
+ 
+@@ -244,21 +232,21 @@ __u8 *yaffs_GetTempBuffer(yaffs_Device *
+        * This is not good.
+        */
+ 
+-      dev->unmanagedTempAllocations++;
+-      return YMALLOC(dev->nDataBytesPerChunk);
++      dev->unmanaged_buffer_allocs++;
++      return YMALLOC(dev->data_bytes_per_chunk);
+ 
+ }
+ 
+-void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer,
+-                                  int lineNo)
++void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer,
++                                  int line_no)
+ {
+       int i;
+ 
+-      dev->tempInUse--;
++      dev->temp_in_use--;
+ 
+       for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
+-              if (dev->tempBuffer[i].buffer == buffer) {
+-                      dev->tempBuffer[i].line = 0;
++              if (dev->temp_buffer[i].buffer == buffer) {
++                      dev->temp_buffer[i].line = 0;
+                       return;
+               }
+       }
+@@ -267,9 +255,9 @@ void yaffs_ReleaseTempBuffer(yaffs_Devic
+               /* assume it is an unmanaged one. */
+               T(YAFFS_TRACE_BUFFERS,
+                 (TSTR("Releasing unmanaged temp buffer in line %d" TENDSTR),
+-                 lineNo));
++                 line_no));
+               YFREE(buffer);
+-              dev->unmanagedTempDeallocations++;
++              dev->unmanaged_buffer_deallocs++;
+       }
+ 
+ }
+@@ -277,21 +265,21 @@ void yaffs_ReleaseTempBuffer(yaffs_Devic
+ /*
+  * Determine if we have a managed buffer.
+  */
+-int yaffs_IsManagedTempBuffer(yaffs_Device *dev, const __u8 *buffer)
++int yaffs_is_managed_tmp_buffer(yaffs_dev_t *dev, const __u8 *buffer)
+ {
+       int i;
+ 
+       for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
+-              if (dev->tempBuffer[i].buffer == buffer)
++              if (dev->temp_buffer[i].buffer == buffer)
+                       return 1;
+       }
+ 
+-      for (i = 0; i < dev->nShortOpCaches; i++) {
+-              if (dev->srCache[i].data == buffer)
++      for (i = 0; i < dev->param.n_caches; i++) {
++              if (dev->cache[i].data == buffer)
+                       return 1;
+       }
+ 
+-      if (buffer == dev->checkpointBuffer)
++      if (buffer == dev->checkpt_buffer)
+               return 1;
+ 
+       T(YAFFS_TRACE_ALWAYS,
+@@ -299,6397 +287,4205 @@ int yaffs_IsManagedTempBuffer(yaffs_Devi
+       return 0;
+ }
+ 
+-
+-
+ /*
+- * Chunk bitmap manipulations
++ * Verification code
+  */
+ 
+-static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device *dev, int blk)
+-{
+-      if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
+-              T(YAFFS_TRACE_ERROR,
+-                      (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR),
+-                      blk));
+-              YBUG();
+-      }
+-      return dev->chunkBits +
+-              (dev->chunkBitmapStride * (blk - dev->internalStartBlock));
+-}
+ 
+-static Y_INLINE void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk)
+-{
+-      if (blk < dev->internalStartBlock || blk > dev->internalEndBlock ||
+-                      chunk < 0 || chunk >= dev->nChunksPerBlock) {
+-              T(YAFFS_TRACE_ERROR,
+-              (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),
+-                      blk, chunk));
+-              YBUG();
+-      }
+-}
+ 
+-static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device *dev, int blk)
+-{
+-      __u8 *blkBits = yaffs_BlockBits(dev, blk);
+ 
+-      memset(blkBits, 0, dev->chunkBitmapStride);
+-}
++/*
++ *  Simple hash function. Needs to have a reasonable spread
++ */
+ 
+-static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device *dev, int blk, int chunk)
++static Y_INLINE int yaffs_hash_fn(int n)
+ {
+-      __u8 *blkBits = yaffs_BlockBits(dev, blk);
+-
+-      yaffs_VerifyChunkBitId(dev, blk, chunk);
+-
+-      blkBits[chunk / 8] &= ~(1 << (chunk & 7));
++      n = abs(n);
++      return n % YAFFS_NOBJECT_BUCKETS;
+ }
+ 
+-static Y_INLINE void yaffs_SetChunkBit(yaffs_Device *dev, int blk, int chunk)
+-{
+-      __u8 *blkBits = yaffs_BlockBits(dev, blk);
+-
+-      yaffs_VerifyChunkBitId(dev, blk, chunk);
+-
+-      blkBits[chunk / 8] |= (1 << (chunk & 7));
+-}
++/*
++ * Access functions to useful fake objects.
++ * Note that root might have a presence in NAND if permissions are set.
++ */
+ 
+-static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device *dev, int blk, int chunk)
++yaffs_obj_t *yaffs_root(yaffs_dev_t *dev)
+ {
+-      __u8 *blkBits = yaffs_BlockBits(dev, blk);
+-      yaffs_VerifyChunkBitId(dev, blk, chunk);
+-
+-      return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0;
++      return dev->root_dir;
+ }
+ 
+-static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device *dev, int blk)
++yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev)
+ {
+-      __u8 *blkBits = yaffs_BlockBits(dev, blk);
+-      int i;
+-      for (i = 0; i < dev->chunkBitmapStride; i++) {
+-              if (*blkBits)
+-                      return 1;
+-              blkBits++;
+-      }
+-      return 0;
++      return dev->lost_n_found;
+ }
+ 
+-static int yaffs_CountChunkBits(yaffs_Device *dev, int blk)
+-{
+-      __u8 *blkBits = yaffs_BlockBits(dev, blk);
+-      int i;
+-      int n = 0;
+-      for (i = 0; i < dev->chunkBitmapStride; i++) {
+-              __u8 x = *blkBits;
+-              while (x) {
+-                      if (x & 1)
+-                              n++;
+-                      x >>= 1;
+-              }
+-
+-              blkBits++;
+-      }
+-      return n;
+-}
+ 
+ /*
+- * Verification code
++ *  Erased NAND checking functions
+  */
+ 
+-static int yaffs_SkipVerification(yaffs_Device *dev)
+-{
+-      return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL));
+-}
+-
+-static int yaffs_SkipFullVerification(yaffs_Device *dev)
+-{
+-      return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_FULL));
+-}
+-
+-static int yaffs_SkipNANDVerification(yaffs_Device *dev)
++int yaffs_check_ff(__u8 *buffer, int n_bytes)
+ {
+-      return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND));
++      /* Horrible, slow implementation */
++      while (n_bytes--) {
++              if (*buffer != 0xFF)
++                      return 0;
++              buffer++;
++      }
++      return 1;
+ }
+ 
+-static const char *blockStateName[] = {
+-"Unknown",
+-"Needs scanning",
+-"Scanning",
+-"Empty",
+-"Allocating",
+-"Full",
+-"Dirty",
+-"Checkpoint",
+-"Collecting",
+-"Dead"
+-};
+-
+-static void yaffs_VerifyBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n)
++static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev,
++                              int nand_chunk)
+ {
+-      int actuallyUsed;
+-      int inUse;
++      int retval = YAFFS_OK;
++      __u8 *data = yaffs_get_temp_buffer(dev, __LINE__);
++      yaffs_ext_tags tags;
++      int result;
+ 
+-      if (yaffs_SkipVerification(dev))
+-              return;
++      result = yaffs_rd_chunk_tags_nand(dev, nand_chunk, data, &tags);
+ 
+-      /* Report illegal runtime states */
+-      if (bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES)
+-              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->blockState));
++      if (tags.ecc_result > YAFFS_ECC_RESULT_NO_ERROR)
++              retval = YAFFS_FAIL;
+ 
+-      switch (bi->blockState) {
+-      case YAFFS_BLOCK_STATE_UNKNOWN:
+-      case YAFFS_BLOCK_STATE_SCANNING:
+-      case YAFFS_BLOCK_STATE_NEEDS_SCANNING:
+-              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR),
+-              n, blockStateName[bi->blockState]));
++      if (!yaffs_check_ff(data, dev->data_bytes_per_chunk) || tags.chunk_used) {
++              T(YAFFS_TRACE_NANDACCESS,
++                (TSTR("Chunk %d not erased" TENDSTR), nand_chunk));
++              retval = YAFFS_FAIL;
+       }
+ 
+-      /* Check pages in use and soft deletions are legal */
+-
+-      actuallyUsed = bi->pagesInUse - bi->softDeletions;
+-
+-      if (bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock ||
+-         bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock ||
+-         actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock)
+-              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR),
+-              n, bi->pagesInUse, bi->softDeletions));
+-
++      yaffs_release_temp_buffer(dev, data, __LINE__);
+ 
+-      /* Check chunk bitmap legal */
+-      inUse = yaffs_CountChunkBits(dev, n);
+-      if (inUse != bi->pagesInUse)
+-              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR),
+-                      n, bi->pagesInUse, inUse));
++      return retval;
+ 
+-      /* Check that the sequence number is valid.
+-       * Ten million is legal, but is very unlikely
+-       */
+-      if (dev->isYaffs2 &&
+-         (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) &&
+-         (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000))
+-              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has suspect sequence number of %d"TENDSTR),
+-              n, bi->sequenceNumber));
+ }
+ 
+-static void yaffs_VerifyCollectedBlock(yaffs_Device *dev, yaffs_BlockInfo *bi,
+-              int n)
++
++static int yaffs_verify_chunk_written(yaffs_dev_t *dev,
++                                      int nand_chunk,
++                                      const __u8 *data,
++                                      yaffs_ext_tags *tags)
+ {
+-      yaffs_VerifyBlock(dev, bi, n);
++      int retval = YAFFS_OK;
++      yaffs_ext_tags tempTags;
++      __u8 *buffer = yaffs_get_temp_buffer(dev,__LINE__);
++      int result;
++      
++      result = yaffs_rd_chunk_tags_nand(dev,nand_chunk,buffer,&tempTags);
++      if(memcmp(buffer,data,dev->data_bytes_per_chunk) ||
++              tempTags.obj_id != tags->obj_id ||
++              tempTags.chunk_id  != tags->chunk_id ||
++              tempTags.n_bytes != tags->n_bytes)
++              retval = YAFFS_FAIL;
+ 
+-      /* After collection the block should be in the erased state */
+-      /* This will need to change if we do partial gc */
++      yaffs_release_temp_buffer(dev, buffer, __LINE__);
+ 
+-      if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING &&
+-                      bi->blockState != YAFFS_BLOCK_STATE_EMPTY) {
+-              T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
+-                      n, bi->blockState));
+-      }
++      return retval;
+ }
+ 
+-static void yaffs_VerifyBlocks(yaffs_Device *dev)
++static int yaffs_write_new_chunk(struct yaffs_dev_s *dev,
++                                      const __u8 *data,
++                                      yaffs_ext_tags *tags,
++                                      int useReserve)
+ {
+-      int i;
+-      int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES];
+-      int nIllegalBlockStates = 0;
+-
+-      if (yaffs_SkipVerification(dev))
+-              return;
+-
+-      memset(nBlocksPerState, 0, sizeof(nBlocksPerState));
+-
+-      for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
+-              yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
+-              yaffs_VerifyBlock(dev, bi, i);
+-
+-              if (bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES)
+-                      nBlocksPerState[bi->blockState]++;
+-              else
+-                      nIllegalBlockStates++;
+-      }
++      int attempts = 0;
++      int writeOk = 0;
++      int chunk;
+ 
+-      T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
+-      T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR)));
++      yaffs2_checkpt_invalidate(dev);
+ 
+-      T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates));
+-      if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
+-              T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR)));
++      do {
++              yaffs_block_info_t *bi = 0;
++              int erasedOk = 0;
+ 
+-      for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++)
+-              T(YAFFS_TRACE_VERIFY,
+-                (TSTR("%s %d blocks"TENDSTR),
+-                blockStateName[i], nBlocksPerState[i]));
++              chunk = yaffs_alloc_chunk(dev, useReserve, &bi);
++              if (chunk < 0) {
++                      /* no space */
++                      break;
++              }
+ 
+-      if (dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
+-              T(YAFFS_TRACE_VERIFY,
+-               (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR),
+-               dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]));
++              /* First check this chunk is erased, if it needs
++               * checking.  The checking policy (unless forced
++               * always on) is as follows:
++               *
++               * Check the first page we try to write in a block.
++               * If the check passes then we don't need to check any
++               * more.        If the check fails, we check again...
++               * If the block has been erased, we don't need to check.
++               *
++               * However, if the block has been prioritised for gc,
++               * then we think there might be something odd about
++               * this block and stop using it.
++               *
++               * Rationale: We should only ever see chunks that have
++               * not been erased if there was a partially written
++               * chunk due to power loss.  This checking policy should
++               * catch that case with very few checks and thus save a
++               * lot of checks that are most likely not needed.
++               *
++               * Mods to the above
++               * If an erase check fails or the write fails we skip the 
++               * rest of the block.
++               */
+ 
+-      if (dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
+-              T(YAFFS_TRACE_VERIFY,
+-               (TSTR("Erased block count wrong dev %d count %d"TENDSTR),
+-               dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]));
++              /* let's give it a try */
++              attempts++;
+ 
+-      if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
+-              T(YAFFS_TRACE_VERIFY,
+-               (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR),
+-               nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING]));
++              if(dev->param.always_check_erased)
++                      bi->skip_erased_check = 0;
+ 
+-      T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
++              if (!bi->skip_erased_check) {
++                      erasedOk = yaffs_check_chunk_erased(dev, chunk);
++                      if (erasedOk != YAFFS_OK) {
++                              T(YAFFS_TRACE_ERROR,
++                              (TSTR("**>> yaffs chunk %d was not erased"
++                              TENDSTR), chunk));
+ 
+-}
++                              /* If not erased, delete this one,
++                               * skip rest of block and
++                               * try another chunk */
++                               yaffs_chunk_del(dev,chunk,1,__LINE__);
++                               yaffs_skip_rest_of_block(dev);
++                              continue;
++                      }
++              }
+ 
+-/*
+- * Verify the object header. oh must be valid, but obj and tags may be NULL in which
+- * case those tests will not be performed.
+- */
+-static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck)
+-{
+-      if (obj && yaffs_SkipVerification(obj->myDev))
+-              return;
++              writeOk = yaffs_wr_chunk_tags_nand(dev, chunk,
++                              data, tags);
+ 
+-      if (!(tags && obj && oh)) {
+-              T(YAFFS_TRACE_VERIFY,
+-                              (TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR),
+-                              (__u32)tags, (__u32)obj, (__u32)oh));
+-              return;
+-      }
++              if(!bi->skip_erased_check)
++                      writeOk = yaffs_verify_chunk_written(dev, chunk, data, tags);
+ 
+-      if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
+-                      oh->type > YAFFS_OBJECT_TYPE_MAX)
+-              T(YAFFS_TRACE_VERIFY,
+-                      (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR),
+-                      tags->objectId, oh->type));
++              if (writeOk != YAFFS_OK) {
++                      /* Clean up aborted write, skip to next block and
++                       * try another chunk */
++                      yaffs_handle_chunk_wr_error(dev, chunk, erasedOk);
++                      continue;
++              }
+ 
+-      if (tags->objectId != obj->objectId)
+-              T(YAFFS_TRACE_VERIFY,
+-                      (TSTR("Obj %d header mismatch objectId %d"TENDSTR),
+-                      tags->objectId, obj->objectId));
++              bi->skip_erased_check = 1;
+ 
++              /* Copy the data into the robustification buffer */
++              yaffs_handle_chunk_wr_ok(dev, chunk, data, tags);
+ 
+-      /*
+-       * Check that the object's parent ids match if parentCheck requested.
+-       *
+-       * Tests do not apply to the root object.
+-       */
++      } while (writeOk != YAFFS_OK &&
++              (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts));
+ 
+-      if (parentCheck && tags->objectId > 1 && !obj->parent)
+-              T(YAFFS_TRACE_VERIFY,
+-                      (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR),
+-                      tags->objectId, oh->parentObjectId));
++      if (!writeOk)
++              chunk = -1;
+ 
+-      if (parentCheck && obj->parent &&
+-                      oh->parentObjectId != obj->parent->objectId &&
+-                      (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED ||
+-                      obj->parent->objectId != YAFFS_OBJECTID_DELETED))
+-              T(YAFFS_TRACE_VERIFY,
+-                      (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR),
+-                      tags->objectId, oh->parentObjectId, obj->parent->objectId));
++      if (attempts > 1) {
++              T(YAFFS_TRACE_ERROR,
++                      (TSTR("**>> yaffs write required %d attempts" TENDSTR),
++                      attempts));
+ 
+-      if (tags->objectId > 1 && oh->name[0] == 0) /* Null name */
+-              T(YAFFS_TRACE_VERIFY,
+-                      (TSTR("Obj %d header name is NULL"TENDSTR),
+-                      obj->objectId));
++              dev->n_retired_writes += (attempts - 1);
++      }
+ 
+-      if (tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */
+-              T(YAFFS_TRACE_VERIFY,
+-                      (TSTR("Obj %d header name is 0xFF"TENDSTR),
+-                      obj->objectId));
++      return chunk;
+ }
+ 
+ 
++ 
++/*
++ * Block retiring for handling a broken block.
++ */
+ 
+-static int yaffs_VerifyTnodeWorker(yaffs_Object *obj, yaffs_Tnode *tn,
+-                                      __u32 level, int chunkOffset)
++static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block)
+ {
+-      int i;
+-      yaffs_Device *dev = obj->myDev;
+-      int ok = 1;
++      yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block);
+ 
+-      if (tn) {
+-              if (level > 0) {
++      yaffs2_checkpt_invalidate(dev);
++      
++      yaffs2_clear_oldest_dirty_seq(dev,bi);
+ 
+-                      for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
+-                              if (tn->internal[i]) {
+-                                      ok = yaffs_VerifyTnodeWorker(obj,
+-                                                      tn->internal[i],
+-                                                      level - 1,
+-                                                      (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i);
+-                              }
+-                      }
+-              } else if (level == 0) {
+-                      yaffs_ExtendedTags tags;
+-                      __u32 objectId = obj->objectId;
++      if (yaffs_mark_bad(dev, flash_block) != YAFFS_OK) {
++              if (yaffs_erase_block(dev, flash_block) != YAFFS_OK) {
++                      T(YAFFS_TRACE_ALWAYS, (TSTR(
++                              "yaffs: Failed to mark bad and erase block %d"
++                              TENDSTR), flash_block));
++              } else {
++                      yaffs_ext_tags tags;
++                      int chunk_id = flash_block * dev->param.chunks_per_block;
+ 
+-                      chunkOffset <<=  YAFFS_TNODES_LEVEL0_BITS;
++                      __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__);
+ 
+-                      for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) {
+-                              __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
++                      memset(buffer, 0xff, dev->data_bytes_per_chunk);
++                      yaffs_init_tags(&tags);
++                      tags.seq_number = YAFFS_SEQUENCE_BAD_BLOCK;
++                      if (dev->param.write_chunk_tags_fn(dev, chunk_id -
++                              dev->chunk_offset, buffer, &tags) != YAFFS_OK)
++                              T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to "
++                                      TCONT("write bad block marker to block %d")
++                                      TENDSTR), flash_block));
+ 
+-                              if (theChunk > 0) {
+-                                      /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */
+-                                      yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags);
+-                                      if (tags.objectId != objectId || tags.chunkId != chunkOffset) {
+-                                              T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
+-                                                      objectId, chunkOffset, theChunk,
+-                                                      tags.objectId, tags.chunkId));
+-                                      }
+-                              }
+-                              chunkOffset++;
+-                      }
++                      yaffs_release_temp_buffer(dev, buffer, __LINE__);
+               }
+       }
+ 
+-      return ok;
++      bi->block_state = YAFFS_BLOCK_STATE_DEAD;
++      bi->gc_prioritise = 0;
++      bi->needs_retiring = 0;
+ 
++      dev->n_retired_blocks++;
+ }
+ 
++/*
++ * Functions for robustisizing TODO
++ *
++ */
+ 
+-static void yaffs_VerifyFile(yaffs_Object *obj)
++static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk,
++                              const __u8 *data,
++                              const yaffs_ext_tags *tags)
+ {
+-      int requiredTallness;
+-      int actualTallness;
+-      __u32 lastChunk;
+-      __u32 x;
+-      __u32 i;
+-      yaffs_Device *dev;
+-      yaffs_ExtendedTags tags;
+-      yaffs_Tnode *tn;
+-      __u32 objectId;
++      dev=dev;
++      nand_chunk=nand_chunk;
++      data=data;
++      tags=tags;
++}
+ 
+-      if (!obj)
+-              return;
++static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk,
++                              const yaffs_ext_tags *tags)
++{
++      dev=dev;
++      nand_chunk=nand_chunk;
++      tags=tags;
++}
+ 
+-      if (yaffs_SkipVerification(obj->myDev))
+-              return;
++void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi)
++{
++      if (!bi->gc_prioritise) {
++              bi->gc_prioritise = 1;
++              dev->has_pending_prioritised_gc = 1;
++              bi->chunk_error_strikes++;
+ 
+-      dev = obj->myDev;
+-      objectId = obj->objectId;
++              if (bi->chunk_error_strikes > 3) {
++                      bi->needs_retiring = 1; /* Too many stikes, so retire this */
++                      T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR)));
+ 
+-      /* Check file size is consistent with tnode depth */
+-      lastChunk =  obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1;
+-      x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS;
+-      requiredTallness = 0;
+-      while (x > 0) {
+-              x >>= YAFFS_TNODES_INTERNAL_BITS;
+-              requiredTallness++;
++              }
+       }
++}
+ 
+-      actualTallness = obj->variant.fileVariant.topLevel;
++static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk,
++              int erasedOk)
++{
++      int flash_block = nand_chunk / dev->param.chunks_per_block;
++      yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block);
+ 
+-      if (requiredTallness > actualTallness)
+-              T(YAFFS_TRACE_VERIFY,
+-              (TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR),
+-               obj->objectId, actualTallness, requiredTallness));
++      yaffs_handle_chunk_error(dev, bi);
+ 
++      if (erasedOk) {
++              /* Was an actual write failure, so mark the block for retirement  */
++              bi->needs_retiring = 1;
++              T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
++                (TSTR("**>> Block %d needs retiring" TENDSTR), flash_block));
++      }
+ 
+-      /* Check that the chunks in the tnode tree are all correct.
+-       * We do this by scanning through the tnode tree and
+-       * checking the tags for every chunk match.
+-       */
++      /* Delete the chunk */
++      yaffs_chunk_del(dev, nand_chunk, 1, __LINE__);
++      yaffs_skip_rest_of_block(dev);
++}
+ 
+-      if (yaffs_SkipNANDVerification(dev))
+-              return;
+ 
+-      for (i = 1; i <= lastChunk; i++) {
+-              tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant, i);
++/*---------------- Name handling functions ------------*/
+ 
+-              if (tn) {
+-                      __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
+-                      if (theChunk > 0) {
+-                              /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */
+-                              yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags);
+-                              if (tags.objectId != objectId || tags.chunkId != i) {
+-                                      T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
+-                                              objectId, i, theChunk,
+-                                              tags.objectId, tags.chunkId));
+-                              }
+-                      }
++static __u16 yaffs_calc_name_sum(const YCHAR *name)
++{
++      __u16 sum = 0;
++      __u16 i = 1;
++
++      const YUCHAR *bname = (const YUCHAR *) name;
++      if (bname) {
++              while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) {
++
++#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
++                      sum += yaffs_toupper(*bname) * i;
++#else
++                      sum += (*bname) * i;
++#endif
++                      i++;
++                      bname++;
+               }
+       }
++      return sum;
+ }
+ 
+-
+-static void yaffs_VerifyHardLink(yaffs_Object *obj)
++void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name)
+ {
+-      if (obj && yaffs_SkipVerification(obj->myDev))
+-              return;
+-
+-      /* Verify sane equivalent object */
++#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
++      memset(obj->short_name, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1));
++      if (name && yaffs_strnlen(name,YAFFS_SHORT_NAME_LENGTH+1) <= YAFFS_SHORT_NAME_LENGTH)
++              yaffs_strcpy(obj->short_name, name);
++      else
++              obj->short_name[0] = _Y('\0');
++#endif
++      obj->sum = yaffs_calc_name_sum(name);
+ }
+ 
+-static void yaffs_VerifySymlink(yaffs_Object *obj)
++void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh)
+ {
+-      if (obj && yaffs_SkipVerification(obj->myDev))
+-              return;
+-
+-      /* Verify symlink string */
++#ifdef CONFIG_YAFFS_AUTO_UNICODE
++      YCHAR tmpName[YAFFS_MAX_NAME_LENGTH+1];
++      memset(tmpName,0,sizeof(tmpName));
++      yaffs_load_name_from_oh(obj->my_dev,tmpName,oh->name,YAFFS_MAX_NAME_LENGTH+1);
++      yaffs_set_obj_name(obj,tmpName);
++#else
++      yaffs_set_obj_name(obj,oh->name);
++#endif
+ }
+ 
+-static void yaffs_VerifySpecial(yaffs_Object *obj)
+-{
+-      if (obj && yaffs_SkipVerification(obj->myDev))
+-              return;
+-}
+-
+-static void yaffs_VerifyObject(yaffs_Object *obj)
+-{
+-      yaffs_Device *dev;
+-
+-      __u32 chunkMin;
+-      __u32 chunkMax;
+-
+-      __u32 chunkIdOk;
+-      __u32 chunkInRange;
+-      __u32 chunkShouldNotBeDeleted;
+-      __u32 chunkValid;
+-
+-      if (!obj)
+-              return;
+-
+-      if (obj->beingCreated)
+-              return;
++/*-------------------- TNODES -------------------
+ 
+-      dev = obj->myDev;
++ * List of spare tnodes
++ * The list is hooked together using the first pointer
++ * in the tnode.
++ */
+ 
+-      if (yaffs_SkipVerification(dev))
+-              return;
+ 
+-      /* Check sane object header chunk */
++yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev)
++{
++      yaffs_tnode_t *tn = yaffs_alloc_raw_tnode(dev);
++      if (tn){
++              memset(tn, 0, dev->tnode_size);
++              dev->n_tnodes++;
++      }
+ 
+-      chunkMin = dev->internalStartBlock * dev->nChunksPerBlock;
+-      chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1;
++      dev->checkpoint_blocks_required = 0; /* force recalculation*/
+ 
+-      chunkInRange = (((unsigned)(obj->hdrChunk)) >= chunkMin && ((unsigned)(obj->hdrChunk)) <= chunkMax);
+-      chunkIdOk = chunkInRange || obj->hdrChunk == 0;
+-      chunkValid = chunkInRange &&
+-                      yaffs_CheckChunkBit(dev,
+-                                      obj->hdrChunk / dev->nChunksPerBlock,
+-                                      obj->hdrChunk % dev->nChunksPerBlock);
+-      chunkShouldNotBeDeleted = chunkInRange && !chunkValid;
++      return tn;
++}
+ 
+-      if (!obj->fake &&
+-                      (!chunkIdOk || chunkShouldNotBeDeleted)) {
+-              T(YAFFS_TRACE_VERIFY,
+-                      (TSTR("Obj %d has chunkId %d %s %s"TENDSTR),
+-                      obj->objectId, obj->hdrChunk,
+-                      chunkIdOk ? "" : ",out of range",
+-                      chunkShouldNotBeDeleted ? ",marked as deleted" : ""));
+-      }
++/* FreeTnode frees up a tnode and puts it back on the free list */
++static void yaffs_free_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
++{
++      yaffs_free_raw_tnode(dev,tn);
++      dev->n_tnodes--;
++      dev->checkpoint_blocks_required = 0; /* force recalculation*/
++}
+ 
+-      if (chunkValid && !yaffs_SkipNANDVerification(dev)) {
+-              yaffs_ExtendedTags tags;
+-              yaffs_ObjectHeader *oh;
+-              __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
++static void yaffs_deinit_tnodes_and_objs(yaffs_dev_t *dev)
++{
++      yaffs_deinit_raw_tnodes_and_objs(dev);
++      dev->n_obj = 0;
++      dev->n_tnodes = 0;
++}
+ 
+-              oh = (yaffs_ObjectHeader *)buffer;
+ 
+-              yaffs_ReadChunkWithTagsFromNAND(dev, obj->hdrChunk, buffer,
+-                              &tags);
++void yaffs_load_tnode_0(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos,
++              unsigned val)
++{
++      __u32 *map = (__u32 *)tn;
++      __u32 bitInMap;
++      __u32 bitInWord;
++      __u32 wordInMap;
++      __u32 mask;
+ 
+-              yaffs_VerifyObjectHeader(obj, oh, &tags, 1);
++      pos &= YAFFS_TNODES_LEVEL0_MASK;
++      val >>= dev->chunk_grp_bits;
+ 
+-              yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
+-      }
++      bitInMap = pos * dev->tnode_width;
++      wordInMap = bitInMap / 32;
++      bitInWord = bitInMap & (32 - 1);
+ 
+-      /* Verify it has a parent */
+-      if (obj && !obj->fake &&
+-                      (!obj->parent || obj->parent->myDev != dev)) {
+-              T(YAFFS_TRACE_VERIFY,
+-                      (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
+-                      obj->objectId, obj->parent));
+-      }
++      mask = dev->tnode_mask << bitInWord;
+ 
+-      /* Verify parent is a directory */
+-      if (obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+-              T(YAFFS_TRACE_VERIFY,
+-                      (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
+-                      obj->objectId, obj->parent->variantType));
+-      }
++      map[wordInMap] &= ~mask;
++      map[wordInMap] |= (mask & (val << bitInWord));
+ 
+-      switch (obj->variantType) {
+-      case YAFFS_OBJECT_TYPE_FILE:
+-              yaffs_VerifyFile(obj);
+-              break;
+-      case YAFFS_OBJECT_TYPE_SYMLINK:
+-              yaffs_VerifySymlink(obj);
+-              break;
+-      case YAFFS_OBJECT_TYPE_DIRECTORY:
+-              yaffs_VerifyDirectory(obj);
+-              break;
+-      case YAFFS_OBJECT_TYPE_HARDLINK:
+-              yaffs_VerifyHardLink(obj);
+-              break;
+-      case YAFFS_OBJECT_TYPE_SPECIAL:
+-              yaffs_VerifySpecial(obj);
+-              break;
+-      case YAFFS_OBJECT_TYPE_UNKNOWN:
+-      default:
+-              T(YAFFS_TRACE_VERIFY,
+-              (TSTR("Obj %d has illegaltype %d"TENDSTR),
+-              obj->objectId, obj->variantType));
+-              break;
++      if (dev->tnode_width > (32 - bitInWord)) {
++              bitInWord = (32 - bitInWord);
++              wordInMap++;;
++              mask = dev->tnode_mask >> (/*dev->tnode_width -*/ bitInWord);
++              map[wordInMap] &= ~mask;
++              map[wordInMap] |= (mask & (val >> bitInWord));
+       }
+ }
+ 
+-static void yaffs_VerifyObjects(yaffs_Device *dev)
++__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn,
++              unsigned pos)
+ {
+-      yaffs_Object *obj;
+-      int i;
+-      struct ylist_head *lh;
++      __u32 *map = (__u32 *)tn;
++      __u32 bitInMap;
++      __u32 bitInWord;
++      __u32 wordInMap;
++      __u32 val;
+ 
+-      if (yaffs_SkipVerification(dev))
+-              return;
++      pos &= YAFFS_TNODES_LEVEL0_MASK;
+ 
+-      /* Iterate through the objects in each hash entry */
++      bitInMap = pos * dev->tnode_width;
++      wordInMap = bitInMap / 32;
++      bitInWord = bitInMap & (32 - 1);
+ 
+-      for (i = 0; i <  YAFFS_NOBJECT_BUCKETS; i++) {
+-              ylist_for_each(lh, &dev->objectBucket[i].list) {
+-                      if (lh) {
+-                              obj = ylist_entry(lh, yaffs_Object, hashLink);
+-                              yaffs_VerifyObject(obj);
+-                      }
+-              }
+-      }
+-}
++      val = map[wordInMap] >> bitInWord;
+ 
++      if      (dev->tnode_width > (32 - bitInWord)) {
++              bitInWord = (32 - bitInWord);
++              wordInMap++;;
++              val |= (map[wordInMap] << bitInWord);
++      }
+ 
+-/*
+- *  Simple hash function. Needs to have a reasonable spread
+- */
++      val &= dev->tnode_mask;
++      val <<= dev->chunk_grp_bits;
+ 
+-static Y_INLINE int yaffs_HashFunction(int n)
+-{
+-      n = abs(n);
+-      return n % YAFFS_NOBJECT_BUCKETS;
++      return val;
+ }
+ 
+-/*
+- * Access functions to useful fake objects.
+- * Note that root might have a presence in NAND if permissions are set.
++/* ------------------- End of individual tnode manipulation -----------------*/
++
++/* ---------Functions to manipulate the look-up tree (made up of tnodes) ------
++ * The look up tree is represented by the top tnode and the number of top_level
++ * in the tree. 0 means only the level 0 tnode is in the tree.
+  */
+ 
+-yaffs_Object *yaffs_Root(yaffs_Device *dev)
++/* FindLevel0Tnode finds the level 0 tnode, if one exists. */
++yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev,
++                                      yaffs_file_s *file_struct,
++                                      __u32 chunk_id)
+ {
+-      return dev->rootDir;
+-}
++      yaffs_tnode_t *tn = file_struct->top;
++      __u32 i;
++      int requiredTallness;
++      int level = file_struct->top_level;
+ 
+-yaffs_Object *yaffs_LostNFound(yaffs_Device *dev)
+-{
+-      return dev->lostNFoundDir;
+-}
++      dev=dev;
+ 
++      /* Check sane level and chunk Id */
++      if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL)
++              return NULL;
+ 
+-/*
+- *  Erased NAND checking functions
+- */
++      if (chunk_id > YAFFS_MAX_CHUNK_ID)
++              return NULL;
+ 
+-int yaffs_CheckFF(__u8 *buffer, int nBytes)
+-{
+-      /* Horrible, slow implementation */
+-      while (nBytes--) {
+-              if (*buffer != 0xFF)
+-                      return 0;
+-              buffer++;
++      /* First check we're tall enough (ie enough top_level) */
++
++      i = chunk_id >> YAFFS_TNODES_LEVEL0_BITS;
++      requiredTallness = 0;
++      while (i) {
++              i >>= YAFFS_TNODES_INTERNAL_BITS;
++              requiredTallness++;
+       }
+-      return 1;
+-}
+ 
+-static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
+-                              int chunkInNAND)
+-{
+-      int retval = YAFFS_OK;
+-      __u8 *data = yaffs_GetTempBuffer(dev, __LINE__);
+-      yaffs_ExtendedTags tags;
+-      int result;
++      if (requiredTallness > file_struct->top_level)
++              return NULL; /* Not tall enough, so we can't find it */
++
++      /* Traverse down to level 0 */
++      while (level > 0 && tn) {
++              tn = tn->internal[(chunk_id >>
++                      (YAFFS_TNODES_LEVEL0_BITS +
++                              (level - 1) *
++                              YAFFS_TNODES_INTERNAL_BITS)) &
++                      YAFFS_TNODES_INTERNAL_MASK];
++              level--;
++      }
+ 
+-      result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags);
++      return tn;
++}
+ 
+-      if (tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR)
+-              retval = YAFFS_FAIL;
++/* AddOrFindLevel0Tnode finds the level 0 tnode if it exists, otherwise first expands the tree.
++ * This happens in two steps:
++ *  1. If the tree isn't tall enough, then make it taller.
++ *  2. Scan down the tree towards the level 0 tnode adding tnodes if required.
++ *
++ * Used when modifying the tree.
++ *
++ *  If the tn argument is NULL, then a fresh tnode will be added otherwise the specified tn will
++ *  be plugged into the ttree.
++ */
+ 
+-      if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) {
+-              T(YAFFS_TRACE_NANDACCESS,
+-                (TSTR("Chunk %d not erased" TENDSTR), chunkInNAND));
+-              retval = YAFFS_FAIL;
+-      }
++yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev,
++                                      yaffs_file_s *file_struct,
++                                      __u32 chunk_id,
++                                      yaffs_tnode_t *passed_tn)
++{
++      int requiredTallness;
++      int i;
++      int l;
++      yaffs_tnode_t *tn;
+ 
+-      yaffs_ReleaseTempBuffer(dev, data, __LINE__);
++      __u32 x;
+ 
+-      return retval;
+ 
+-}
++      /* Check sane level and page Id */
++      if (file_struct->top_level < 0 || file_struct->top_level > YAFFS_TNODES_MAX_LEVEL)
++              return NULL;
+ 
+-static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
+-                                      const __u8 *data,
+-                                      yaffs_ExtendedTags *tags,
+-                                      int useReserve)
+-{
+-      int attempts = 0;
+-      int writeOk = 0;
+-      int chunk;
++      if (chunk_id > YAFFS_MAX_CHUNK_ID)
++              return NULL;
+ 
+-      yaffs_InvalidateCheckpoint(dev);
++      /* First check we're tall enough (ie enough top_level) */
+ 
+-      do {
+-              yaffs_BlockInfo *bi = 0;
+-              int erasedOk = 0;
++      x = chunk_id >> YAFFS_TNODES_LEVEL0_BITS;
++      requiredTallness = 0;
++      while (x) {
++              x >>= YAFFS_TNODES_INTERNAL_BITS;
++              requiredTallness++;
++      }
+ 
+-              chunk = yaffs_AllocateChunk(dev, useReserve, &bi);
+-              if (chunk < 0) {
+-                      /* no space */
+-                      break;
+-              }
+ 
+-              /* First check this chunk is erased, if it needs
+-               * checking.  The checking policy (unless forced
+-               * always on) is as follows:
+-               *
+-               * Check the first page we try to write in a block.
+-               * If the check passes then we don't need to check any
+-               * more.        If the check fails, we check again...
+-               * If the block has been erased, we don't need to check.
+-               *
+-               * However, if the block has been prioritised for gc,
+-               * then we think there might be something odd about
+-               * this block and stop using it.
+-               *
+-               * Rationale: We should only ever see chunks that have
+-               * not been erased if there was a partially written
+-               * chunk due to power loss.  This checking policy should
+-               * catch that case with very few checks and thus save a
+-               * lot of checks that are most likely not needed.
+-               */
+-              if (bi->gcPrioritise) {
+-                      yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
+-                      /* try another chunk */
+-                      continue;
+-              }
++      if (requiredTallness > file_struct->top_level) {
++              /* Not tall enough, gotta make the tree taller */
++              for (i = file_struct->top_level; i < requiredTallness; i++) {
+ 
+-              /* let's give it a try */
+-              attempts++;
++                      tn = yaffs_get_tnode(dev);
+ 
+-#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED
+-              bi->skipErasedCheck = 0;
+-#endif
+-              if (!bi->skipErasedCheck) {
+-                      erasedOk = yaffs_CheckChunkErased(dev, chunk);
+-                      if (erasedOk != YAFFS_OK) {
++                      if (tn) {
++                              tn->internal[0] = file_struct->top;
++                              file_struct->top = tn;
++                              file_struct->top_level++;
++                      } else {
+                               T(YAFFS_TRACE_ERROR,
+-                              (TSTR("**>> yaffs chunk %d was not erased"
+-                              TENDSTR), chunk));
+-
+-                              /* try another chunk */
+-                              continue;
++                                      (TSTR("yaffs: no more tnodes" TENDSTR)));
++                              return NULL;
+                       }
+-                      bi->skipErasedCheck = 1;
+               }
++      }
+ 
+-              writeOk = yaffs_WriteChunkWithTagsToNAND(dev, chunk,
+-                              data, tags);
+-              if (writeOk != YAFFS_OK) {
+-                      yaffs_HandleWriteChunkError(dev, chunk, erasedOk);
+-                      /* try another chunk */
+-                      continue;
+-              }
++      /* Traverse down to level 0, adding anything we need */
+ 
+-              /* Copy the data into the robustification buffer */
+-              yaffs_HandleWriteChunkOk(dev, chunk, data, tags);
++      l = file_struct->top_level;
++      tn = file_struct->top;
+ 
+-      } while (writeOk != YAFFS_OK &&
+-              (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts));
++      if (l > 0) {
++              while (l > 0 && tn) {
++                      x = (chunk_id >>
++                           (YAFFS_TNODES_LEVEL0_BITS +
++                            (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) &
++                          YAFFS_TNODES_INTERNAL_MASK;
+ 
+-      if (!writeOk)
+-              chunk = -1;
+ 
+-      if (attempts > 1) {
+-              T(YAFFS_TRACE_ERROR,
+-                      (TSTR("**>> yaffs write required %d attempts" TENDSTR),
+-                      attempts));
++                      if ((l > 1) && !tn->internal[x]) {
++                              /* Add missing non-level-zero tnode */
++                              tn->internal[x] = yaffs_get_tnode(dev);
++                              if(!tn->internal[x])
++                                      return NULL;
++                      } else if (l == 1) {
++                              /* Looking from level 1 at level 0 */
++                              if (passed_tn) {
++                                      /* If we already have one, then release it.*/
++                                      if (tn->internal[x])
++                                              yaffs_free_tnode(dev, tn->internal[x]);
++                                      tn->internal[x] = passed_tn;
++
++                              } else if (!tn->internal[x]) {
++                                      /* Don't have one, none passed in */
++                                      tn->internal[x] = yaffs_get_tnode(dev);
++                                      if(!tn->internal[x])
++                                              return NULL;
++                              }
++                      }
+ 
+-              dev->nRetriedWrites += (attempts - 1);
++                      tn = tn->internal[x];
++                      l--;
++              }
++      } else {
++              /* top is level 0 */
++              if (passed_tn) {
++                      memcpy(tn, passed_tn, (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8);
++                      yaffs_free_tnode(dev, passed_tn);
++              }
+       }
+ 
+-      return chunk;
++      return tn;
+ }
+ 
+-/*
+- * Block retiring for handling a broken block.
+- */
+-
+-static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND)
++static int yaffs_find_chunk_in_group(yaffs_dev_t *dev, int theChunk,
++                              yaffs_ext_tags *tags, int obj_id,
++                              int inode_chunk)
+ {
+-      yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
++      int j;
+ 
+-      yaffs_InvalidateCheckpoint(dev);
++      for (j = 0; theChunk && j < dev->chunk_grp_size; j++) {
++              if (yaffs_check_chunk_bit(dev, theChunk / dev->param.chunks_per_block,
++                              theChunk % dev->param.chunks_per_block)) {
++                      
++                      if(dev->chunk_grp_size == 1)
++                              return theChunk;
++                      else {
++                              yaffs_rd_chunk_tags_nand(dev, theChunk, NULL,
++                                                              tags);
++                              if (yaffs_tags_match(tags, obj_id, inode_chunk)) {
++                                      /* found it; */
++                                      return theChunk;
++                              }
++                      }
++              }
++              theChunk++;
++      }
++      return -1;
++}
+ 
+-      if (yaffs_MarkBlockBad(dev, blockInNAND) != YAFFS_OK) {
+-              if (yaffs_EraseBlockInNAND(dev, blockInNAND) != YAFFS_OK) {
+-                      T(YAFFS_TRACE_ALWAYS, (TSTR(
+-                              "yaffs: Failed to mark bad and erase block %d"
+-                              TENDSTR), blockInNAND));
+-              } else {
+-                      yaffs_ExtendedTags tags;
+-                      int chunkId = blockInNAND * dev->nChunksPerBlock;
++#if 0
++/* Experimental code not being used yet. Might speed up file deletion */
++/* DeleteWorker scans backwards through the tnode tree and deletes all the
++ * chunks and tnodes in the file.
++ * Returns 1 if the tree was deleted.
++ * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete.
++ */
+ 
+-                      __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
++static int yaffs_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, __u32 level,
++                            int chunk_offset, int *limit)
++{
++      int i;
++      int inode_chunk;
++      int theChunk;
++      yaffs_ext_tags tags;
++      int foundChunk;
++      yaffs_dev_t *dev = in->my_dev;
+ 
+-                      memset(buffer, 0xff, dev->nDataBytesPerChunk);
+-                      yaffs_InitialiseTags(&tags);
+-                      tags.sequenceNumber = YAFFS_SEQUENCE_BAD_BLOCK;
+-                      if (dev->writeChunkWithTagsToNAND(dev, chunkId -
+-                              dev->chunkOffset, buffer, &tags) != YAFFS_OK)
+-                              T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to "
+-                                      TCONT("write bad block marker to block %d")
+-                                      TENDSTR), blockInNAND));
++      int allDone = 1;
+ 
+-                      yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
+-              }
+-      }
++      if (tn) {
++              if (level > 0) {
++                      for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0;
++                           i--) {
++                              if (tn->internal[i]) {
++                                      if (limit && (*limit) < 0) {
++                                              allDone = 0;
++                                      } else {
++                                              allDone =
++                                                      yaffs_del_worker(in,
++                                                              tn->
++                                                              internal
++                                                              [i],
++                                                              level -
++                                                              1,
++                                                              (chunk_offset
++                                                                      <<
++                                                                      YAFFS_TNODES_INTERNAL_BITS)
++                                                              + i,
++                                                              limit);
++                                      }
++                                      if (allDone) {
++                                              yaffs_free_tnode(dev,
++                                                              tn->
++                                                              internal[i]);
++                                              tn->internal[i] = NULL;
++                                      }
++                              }
++                      }
++                      return (allDone) ? 1 : 0;
++              } else if (level == 0) {
++                      int hitLimit = 0;
+ 
+-      bi->blockState = YAFFS_BLOCK_STATE_DEAD;
+-      bi->gcPrioritise = 0;
+-      bi->needsRetiring = 0;
++                      for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit;
++                                      i--) {
++                              theChunk = yaffs_get_group_base(dev, tn, i);
++                              if (theChunk) {
+ 
+-      dev->nRetiredBlocks++;
+-}
++                                      inode_chunk = (chunk_offset <<
++                                              YAFFS_TNODES_LEVEL0_BITS) + i;
+ 
+-/*
+- * Functions for robustisizing TODO
+- *
+- */
++                                      foundChunk =
++                                              yaffs_find_chunk_in_group(dev,
++                                                              theChunk,
++                                                              &tags,
++                                                              in->obj_id,
++                                                              inode_chunk);
+ 
+-static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
+-                              const __u8 *data,
+-                              const yaffs_ExtendedTags *tags)
+-{
+-}
++                                      if (foundChunk > 0) {
++                                              yaffs_chunk_del(dev,
++                                                                foundChunk, 1,
++                                                                __LINE__);
++                                              in->n_data_chunks--;
++                                              if (limit) {
++                                                      *limit = *limit - 1;
++                                                      if (*limit <= 0)
++                                                              hitLimit = 1;
++                                              }
+ 
+-static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
+-                              const yaffs_ExtendedTags *tags)
+-{
+-}
++                                      }
+ 
+-void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi)
+-{
+-      if (!bi->gcPrioritise) {
+-              bi->gcPrioritise = 1;
+-              dev->hasPendingPrioritisedGCs = 1;
+-              bi->chunkErrorStrikes++;
++                                      yaffs_load_tnode_0(dev, tn, i, 0);
++                              }
+ 
+-              if (bi->chunkErrorStrikes > 3) {
+-                      bi->needsRetiring = 1; /* Too many stikes, so retire this */
+-                      T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR)));
++                      }
++                      return (i < 0) ? 1 : 0;
+ 
+               }
++
+       }
++
++      return 1;
++
+ }
+ 
+-static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND,
+-              int erasedOk)
++#endif
++
++static void yaffs_soft_del_chunk(yaffs_dev_t *dev, int chunk)
+ {
+-      int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
+-      yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
++      yaffs_block_info_t *theBlock;
++      unsigned block_no;
+ 
+-      yaffs_HandleChunkError(dev, bi);
++      T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk));
+ 
+-      if (erasedOk) {
+-              /* Was an actual write failure, so mark the block for retirement  */
+-              bi->needsRetiring = 1;
+-              T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+-                (TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND));
++      block_no =  chunk / dev->param.chunks_per_block;
++      theBlock = yaffs_get_block_info(dev, block_no);
++      if (theBlock) {
++              theBlock->soft_del_pages++;
++              dev->n_free_chunks++;
++              yaffs2_update_oldest_dirty_seq(dev, block_no, theBlock);
+       }
+-
+-      /* Delete the chunk */
+-      yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
+ }
+ 
++/* SoftDeleteWorker scans backwards through the tnode tree and soft deletes all the chunks in the file.
++ * All soft deleting does is increment the block's softdelete count and pulls the chunk out
++ * of the tnode.
++ * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted.
++ */
+ 
+-/*---------------- Name handling functions ------------*/
+-
+-static __u16 yaffs_CalcNameSum(const YCHAR *name)
++static int yaffs_soft_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn,
++                                __u32 level, int chunk_offset)
+ {
+-      __u16 sum = 0;
+-      __u16 i = 1;
++      int i;
++      int theChunk;
++      int allDone = 1;
++      yaffs_dev_t *dev = in->my_dev;
+ 
+-      const YUCHAR *bname = (const YUCHAR *) name;
+-      if (bname) {
+-              while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) {
++      if (tn) {
++              if (level > 0) {
++
++                      for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0;
++                           i--) {
++                              if (tn->internal[i]) {
++                                      allDone =
++                                          yaffs_soft_del_worker(in,
++                                                                 tn->
++                                                                 internal[i],
++                                                                 level - 1,
++                                                                 (chunk_offset
++                                                                  <<
++                                                                  YAFFS_TNODES_INTERNAL_BITS)
++                                                                 + i);
++                                      if (allDone) {
++                                              yaffs_free_tnode(dev,
++                                                              tn->
++                                                              internal[i]);
++                                              tn->internal[i] = NULL;
++                                      } else {
++                                              /* Hoosterman... how could this happen? */
++                                      }
++                              }
++                      }
++                      return (allDone) ? 1 : 0;
++              } else if (level == 0) {
++
++                      for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) {
++                              theChunk = yaffs_get_group_base(dev, tn, i);
++                              if (theChunk) {
++                                      /* Note this does not find the real chunk, only the chunk group.
++                                       * We make an assumption that a chunk group is not larger than
++                                       * a block.
++                                       */
++                                      yaffs_soft_del_chunk(dev, theChunk);
++                                      yaffs_load_tnode_0(dev, tn, i, 0);
++                              }
++
++                      }
++                      return 1;
+ 
+-#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
+-                      sum += yaffs_toupper(*bname) * i;
+-#else
+-                      sum += (*bname) * i;
+-#endif
+-                      i++;
+-                      bname++;
+               }
++
+       }
+-      return sum;
++
++      return 1;
++
+ }
+ 
+-static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name)
++static void yaffs_soft_del_file(yaffs_obj_t *obj)
+ {
+-#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
+-      memset(obj->shortName, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1));
+-      if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH)
+-              yaffs_strcpy(obj->shortName, name);
+-      else
+-              obj->shortName[0] = _Y('\0');
+-#endif
+-      obj->sum = yaffs_CalcNameSum(name);
++      if (obj->deleted &&
++          obj->variant_type == YAFFS_OBJECT_TYPE_FILE && !obj->soft_del) {
++              if (obj->n_data_chunks <= 0) {
++                      /* Empty file with no duplicate object headers, just delete it immediately */
++                      yaffs_free_tnode(obj->my_dev,
++                                      obj->variant.file_variant.top);
++                      obj->variant.file_variant.top = NULL;
++                      T(YAFFS_TRACE_TRACING,
++                        (TSTR("yaffs: Deleting empty file %d" TENDSTR),
++                         obj->obj_id));
++                      yaffs_generic_obj_del(obj);
++              } else {
++                      yaffs_soft_del_worker(obj,
++                                             obj->variant.file_variant.top,
++                                             obj->variant.file_variant.
++                                             top_level, 0);
++                      obj->soft_del = 1;
++              }
++      }
+ }
+ 
+-/*-------------------- TNODES -------------------
+-
+- * List of spare tnodes
+- * The list is hooked together using the first pointer
+- * in the tnode.
+- */
+-
+-/* yaffs_CreateTnodes creates a bunch more tnodes and
+- * adds them to the tnode free list.
+- * Don't use this function directly
++/* Pruning removes any part of the file structure tree that is beyond the
++ * bounds of the file (ie that does not point to chunks).
++ *
++ * A file should only get pruned when its size is reduced.
++ *
++ * Before pruning, the chunks must be pulled from the tree and the
++ * level 0 tnode entries must be zeroed out.
++ * Could also use this for file deletion, but that's probably better handled
++ * by a special case.
++ *
++ * This function is recursive. For levels > 0 the function is called again on
++ * any sub-tree. For level == 0 we just check if the sub-tree has data.
++ * If there is no data in a subtree then it is pruned.
+  */
+ 
+-static int yaffs_CreateTnodes(yaffs_Device *dev, int nTnodes)
++static yaffs_tnode_t *yaffs_prune_worker(yaffs_dev_t *dev, yaffs_tnode_t *tn,
++                              __u32 level, int del0)
+ {
+       int i;
+-      int tnodeSize;
+-      yaffs_Tnode *newTnodes;
+-      __u8 *mem;
+-      yaffs_Tnode *curr;
+-      yaffs_Tnode *next;
+-      yaffs_TnodeList *tnl;
++      int hasData;
+ 
+-      if (nTnodes < 1)
+-              return YAFFS_OK;
++      if (tn) {
++              hasData = 0;
+ 
+-      /* Calculate the tnode size in bytes for variable width tnode support.
+-       * Must be a multiple of 32-bits  */
+-      tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
++              if(level > 0){
++                      for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) {
++                              if (tn->internal[i]) {
++                                      tn->internal[i] =
++                                              yaffs_prune_worker(dev, tn->internal[i],
++                                                      level - 1,
++                                                      (i == 0) ? del0 : 1);
++                              }
+ 
+-      if (tnodeSize < sizeof(yaffs_Tnode))
+-              tnodeSize = sizeof(yaffs_Tnode);
++                              if (tn->internal[i])
++                                      hasData++;
++                      }
++              } else {
++                      int tnode_size_u32 = dev->tnode_size/sizeof(__u32);
++                      __u32 *map = (__u32 *)tn;
+ 
+-      /* make these things */
++                        for(i = 0; !hasData && i < tnode_size_u32; i++){
++                                if(map[i])
++                                        hasData++;
++                        }
++                }
+ 
+-      newTnodes = YMALLOC(nTnodes * tnodeSize);
+-      mem = (__u8 *)newTnodes;
++              if (hasData == 0 && del0) {
++                      /* Free and return NULL */
+ 
+-      if (!newTnodes) {
+-              T(YAFFS_TRACE_ERROR,
+-                      (TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
+-              return YAFFS_FAIL;
+-      }
++                      yaffs_free_tnode(dev, tn);
++                      tn = NULL;
++              }
+ 
+-      /* Hook them into the free list */
+-#if 0
+-      for (i = 0; i < nTnodes - 1; i++) {
+-              newTnodes[i].internal[0] = &newTnodes[i + 1];
+-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
+-              newTnodes[i].internal[YAFFS_NTNODES_INTERNAL] = (void *)1;
+-#endif
+       }
+ 
+-      newTnodes[nTnodes - 1].internal[0] = dev->freeTnodes;
+-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
+-      newTnodes[nTnodes - 1].internal[YAFFS_NTNODES_INTERNAL] = (void *)1;
+-#endif
+-      dev->freeTnodes = newTnodes;
+-#else
+-      /* New hookup for wide tnodes */
+-      for (i = 0; i < nTnodes - 1; i++) {
+-              curr = (yaffs_Tnode *) &mem[i * tnodeSize];
+-              next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize];
+-              curr->internal[0] = next;
+-      }
++      return tn;
+ 
+-      curr = (yaffs_Tnode *) &mem[(nTnodes - 1) * tnodeSize];
+-      curr->internal[0] = dev->freeTnodes;
+-      dev->freeTnodes = (yaffs_Tnode *)mem;
++}
+ 
+-#endif
++static int yaffs_prune_tree(yaffs_dev_t *dev,
++                              yaffs_file_s *file_struct)
++{
++      int i;
++      int hasData;
++      int done = 0;
++      yaffs_tnode_t *tn;
+ 
++      if (file_struct->top_level > 0) {
++              file_struct->top =
++                  yaffs_prune_worker(dev, file_struct->top, file_struct->top_level, 0);
++
++              /* Now we have a tree with all the non-zero branches NULL but the height
++               * is the same as it was.
++               * Let's see if we can trim internal tnodes to shorten the tree.
++               * We can do this if only the 0th element in the tnode is in use
++               * (ie all the non-zero are NULL)
++               */
+ 
+-      dev->nFreeTnodes += nTnodes;
+-      dev->nTnodesCreated += nTnodes;
++              while (file_struct->top_level && !done) {
++                      tn = file_struct->top;
+ 
+-      /* Now add this bunch of tnodes to a list for freeing up.
+-       * NB If we can't add this to the management list it isn't fatal
+-       * but it just means we can't free this bunch of tnodes later.
+-       */
++                      hasData = 0;
++                      for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) {
++                              if (tn->internal[i])
++                                      hasData++;
++                      }
+ 
+-      tnl = YMALLOC(sizeof(yaffs_TnodeList));
+-      if (!tnl) {
+-              T(YAFFS_TRACE_ERROR,
+-                (TSTR
+-                 ("yaffs: Could not add tnodes to management list" TENDSTR)));
+-                 return YAFFS_FAIL;
+-      } else {
+-              tnl->tnodes = newTnodes;
+-              tnl->next = dev->allocatedTnodeList;
+-              dev->allocatedTnodeList = tnl;
++                      if (!hasData) {
++                              file_struct->top = tn->internal[0];
++                              file_struct->top_level--;
++                              yaffs_free_tnode(dev, tn);
++                      } else {
++                              done = 1;
++                      }
++              }
+       }
+ 
+-      T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR)));
+-
+       return YAFFS_OK;
+ }
+ 
+-/* GetTnode gets us a clean tnode. Tries to make allocate more if we run out */
++/*-------------------- End of File Structure functions.-------------------*/
++
+ 
+-static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device *dev)
++/* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */
++static yaffs_obj_t *yaffs_alloc_empty_obj(yaffs_dev_t *dev)
+ {
+-      yaffs_Tnode *tn = NULL;
++      yaffs_obj_t *obj = yaffs_alloc_raw_obj(dev);
+ 
+-      /* If there are none left make more */
+-      if (!dev->freeTnodes)
+-              yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES);
+-
+-      if (dev->freeTnodes) {
+-              tn = dev->freeTnodes;
+-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
+-              if (tn->internal[YAFFS_NTNODES_INTERNAL] != (void *)1) {
+-                      /* Hoosterman, this thing looks like it isn't in the list */
+-                      T(YAFFS_TRACE_ALWAYS,
+-                        (TSTR("yaffs: Tnode list bug 1" TENDSTR)));
+-              }
+-#endif
+-              dev->freeTnodes = dev->freeTnodes->internal[0];
+-              dev->nFreeTnodes--;
+-      }
++      if (obj) {
++              dev->n_obj++;
+ 
+-      dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
++              /* Now sweeten it up... */
+ 
+-      return tn;
+-}
++              memset(obj, 0, sizeof(yaffs_obj_t));
++              obj->being_created = 1;
+ 
+-static yaffs_Tnode *yaffs_GetTnode(yaffs_Device *dev)
+-{
+-      yaffs_Tnode *tn = yaffs_GetTnodeRaw(dev);
+-      int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
++              obj->my_dev = dev;
++              obj->hdr_chunk = 0;
++              obj->variant_type = YAFFS_OBJECT_TYPE_UNKNOWN;
++              YINIT_LIST_HEAD(&(obj->hard_links));
++              YINIT_LIST_HEAD(&(obj->hash_link));
++              YINIT_LIST_HEAD(&obj->siblings);
+ 
+-      if (tnodeSize < sizeof(yaffs_Tnode))
+-              tnodeSize = sizeof(yaffs_Tnode);
+ 
+-      if (tn)
+-              memset(tn, 0, tnodeSize);
++              /* Now make the directory sane */
++              if (dev->root_dir) {
++                      obj->parent = dev->root_dir;
++                      ylist_add(&(obj->siblings), &dev->root_dir->variant.dir_variant.children);
++              }
+ 
+-      return tn;
++              /* Add it to the lost and found directory.
++               * NB Can't put root or lostNFound in lostNFound so
++               * check if lostNFound exists first
++               */
++              if (dev->lost_n_found)
++                      yaffs_add_obj_to_dir(dev->lost_n_found, obj);
++
++              obj->being_created = 0;
++      }
++
++      dev->checkpoint_blocks_required = 0; /* force recalculation*/
++
++      return obj;
+ }
+ 
+-/* FreeTnode frees up a tnode and puts it back on the free list */
+-static void yaffs_FreeTnode(yaffs_Device *dev, yaffs_Tnode *tn)
++static yaffs_obj_t *yaffs_create_fake_dir(yaffs_dev_t *dev, int number,
++                                             __u32 mode)
+ {
+-      if (tn) {
+-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
+-              if (tn->internal[YAFFS_NTNODES_INTERNAL] != 0) {
+-                      /* Hoosterman, this thing looks like it is already in the list */
+-                      T(YAFFS_TRACE_ALWAYS,
+-                        (TSTR("yaffs: Tnode list bug 2" TENDSTR)));
+-              }
+-              tn->internal[YAFFS_NTNODES_INTERNAL] = (void *)1;
+-#endif
+-              tn->internal[0] = dev->freeTnodes;
+-              dev->freeTnodes = tn;
+-              dev->nFreeTnodes++;
++
++      yaffs_obj_t *obj =
++          yaffs_new_obj(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY);
++      if (obj) {
++              obj->fake = 1;          /* it is fake so it might have no NAND presence... */
++              obj->rename_allowed = 0;        /* ... and we're not allowed to rename it... */
++              obj->unlink_allowed = 0;        /* ... or unlink it */
++              obj->deleted = 0;
++              obj->unlinked = 0;
++              obj->yst_mode = mode;
++              obj->my_dev = dev;
++              obj->hdr_chunk = 0;     /* Not a valid chunk. */
++      }
++
++      return obj;
++
++}
++
++static void yaffs_unhash_obj(yaffs_obj_t *obj)
++{
++      int bucket;
++      yaffs_dev_t *dev = obj->my_dev;
++
++      /* If it is still linked into the bucket list, free from the list */
++      if (!ylist_empty(&obj->hash_link)) {
++              ylist_del_init(&obj->hash_link);
++              bucket = yaffs_hash_fn(obj->obj_id);
++              dev->obj_bucket[bucket].count--;
+       }
+-      dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+ }
+ 
+-static void yaffs_DeinitialiseTnodes(yaffs_Device *dev)
++/*  FreeObject frees up a Object and puts it back on the free list */
++static void yaffs_free_obj(yaffs_obj_t *obj)
+ {
+-      /* Free the list of allocated tnodes */
+-      yaffs_TnodeList *tmp;
++      yaffs_dev_t *dev = obj->my_dev;
++
++      T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), obj, obj->my_inode));
+ 
+-      while (dev->allocatedTnodeList) {
+-              tmp = dev->allocatedTnodeList->next;
++      if (!obj)
++              YBUG();
++      if (obj->parent)
++              YBUG();
++      if (!ylist_empty(&obj->siblings))
++              YBUG();
+ 
+-              YFREE(dev->allocatedTnodeList->tnodes);
+-              YFREE(dev->allocatedTnodeList);
+-              dev->allocatedTnodeList = tmp;
+ 
++      if (obj->my_inode) {
++              /* We're still hooked up to a cached inode.
++               * Don't delete now, but mark for later deletion
++               */
++              obj->defered_free = 1;
++              return;
+       }
+ 
+-      dev->freeTnodes = NULL;
+-      dev->nFreeTnodes = 0;
+-}
++      yaffs_unhash_obj(obj);
+ 
+-static void yaffs_InitialiseTnodes(yaffs_Device *dev)
+-{
+-      dev->allocatedTnodeList = NULL;
+-      dev->freeTnodes = NULL;
+-      dev->nFreeTnodes = 0;
+-      dev->nTnodesCreated = 0;
++      yaffs_free_raw_obj(dev,obj);
++      dev->n_obj--;
++      dev->checkpoint_blocks_required = 0; /* force recalculation*/
+ }
+ 
+ 
+-void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos,
+-              unsigned val)
++void yaffs_handle_defered_free(yaffs_obj_t *obj)
+ {
+-      __u32 *map = (__u32 *)tn;
+-      __u32 bitInMap;
+-      __u32 bitInWord;
+-      __u32 wordInMap;
+-      __u32 mask;
+-
+-      pos &= YAFFS_TNODES_LEVEL0_MASK;
+-      val >>= dev->chunkGroupBits;
++      if (obj->defered_free)
++              yaffs_free_obj(obj);
++}
+ 
+-      bitInMap = pos * dev->tnodeWidth;
+-      wordInMap = bitInMap / 32;
+-      bitInWord = bitInMap & (32 - 1);
++static void yaffs_init_tnodes_and_objs(yaffs_dev_t *dev)
++{
++      int i;
+ 
+-      mask = dev->tnodeMask << bitInWord;
++      dev->n_obj = 0;
++      dev->n_tnodes = 0;
+ 
+-      map[wordInMap] &= ~mask;
+-      map[wordInMap] |= (mask & (val << bitInWord));
++      yaffs_init_raw_tnodes_and_objs(dev);
+ 
+-      if (dev->tnodeWidth > (32 - bitInWord)) {
+-              bitInWord = (32 - bitInWord);
+-              wordInMap++;;
+-              mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord);
+-              map[wordInMap] &= ~mask;
+-              map[wordInMap] |= (mask & (val >> bitInWord));
++      for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
++              YINIT_LIST_HEAD(&dev->obj_bucket[i].list);
++              dev->obj_bucket[i].count = 0;
+       }
+ }
+ 
+-static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
+-              unsigned pos)
++static int yaffs_find_nice_bucket(yaffs_dev_t *dev)
+ {
+-      __u32 *map = (__u32 *)tn;
+-      __u32 bitInMap;
+-      __u32 bitInWord;
+-      __u32 wordInMap;
+-      __u32 val;
++      int i;
++      int l = 999;
++      int lowest = 999999;
+ 
+-      pos &= YAFFS_TNODES_LEVEL0_MASK;
+ 
+-      bitInMap = pos * dev->tnodeWidth;
+-      wordInMap = bitInMap / 32;
+-      bitInWord = bitInMap & (32 - 1);
++      /* Search for the shortest list or one that
++       * isn't too long.
++       */
+ 
+-      val = map[wordInMap] >> bitInWord;
++      for (i = 0; i < 10 && lowest > 4; i++) {
++              dev->bucket_finder++;
++              dev->bucket_finder %= YAFFS_NOBJECT_BUCKETS;
++              if (dev->obj_bucket[dev->bucket_finder].count < lowest) {
++                      lowest = dev->obj_bucket[dev->bucket_finder].count;
++                      l = dev->bucket_finder;
++              }
+ 
+-      if      (dev->tnodeWidth > (32 - bitInWord)) {
+-              bitInWord = (32 - bitInWord);
+-              wordInMap++;;
+-              val |= (map[wordInMap] << bitInWord);
+       }
+ 
+-      val &= dev->tnodeMask;
+-      val <<= dev->chunkGroupBits;
+-
+-      return val;
++      return l;
+ }
+ 
+-/* ------------------- End of individual tnode manipulation -----------------*/
+-
+-/* ---------Functions to manipulate the look-up tree (made up of tnodes) ------
+- * The look up tree is represented by the top tnode and the number of topLevel
+- * in the tree. 0 means only the level 0 tnode is in the tree.
+- */
+-
+-/* FindLevel0Tnode finds the level 0 tnode, if one exists. */
+-static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev,
+-                                      yaffs_FileStructure *fStruct,
+-                                      __u32 chunkId)
++static int yaffs_new_obj_id(yaffs_dev_t *dev)
+ {
+-      yaffs_Tnode *tn = fStruct->top;
+-      __u32 i;
+-      int requiredTallness;
+-      int level = fStruct->topLevel;
+-
+-      /* Check sane level and chunk Id */
+-      if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL)
+-              return NULL;
++      int bucket = yaffs_find_nice_bucket(dev);
+ 
+-      if (chunkId > YAFFS_MAX_CHUNK_ID)
+-              return NULL;
++      /* Now find an object value that has not already been taken
++       * by scanning the list.
++       */
+ 
+-      /* First check we're tall enough (ie enough topLevel) */
++      int found = 0;
++      struct ylist_head *i;
+ 
+-      i = chunkId >> YAFFS_TNODES_LEVEL0_BITS;
+-      requiredTallness = 0;
+-      while (i) {
+-              i >>= YAFFS_TNODES_INTERNAL_BITS;
+-              requiredTallness++;
+-      }
++      __u32 n = (__u32) bucket;
+ 
+-      if (requiredTallness > fStruct->topLevel)
+-              return NULL; /* Not tall enough, so we can't find it */
++      /* yaffs_check_obj_hash_sane();  */
+ 
+-      /* Traverse down to level 0 */
+-      while (level > 0 && tn) {
+-              tn = tn->internal[(chunkId >>
+-                      (YAFFS_TNODES_LEVEL0_BITS +
+-                              (level - 1) *
+-                              YAFFS_TNODES_INTERNAL_BITS)) &
+-                      YAFFS_TNODES_INTERNAL_MASK];
+-              level--;
++      while (!found) {
++              found = 1;
++              n += YAFFS_NOBJECT_BUCKETS;
++              if (1 || dev->obj_bucket[bucket].count > 0) {
++                      ylist_for_each(i, &dev->obj_bucket[bucket].list) {
++                              /* If there is already one in the list */
++                              if (i && ylist_entry(i, yaffs_obj_t,
++                                              hash_link)->obj_id == n) {
++                                      found = 0;
++                              }
++                      }
++              }
+       }
+ 
+-      return tn;
++      return n;
+ }
+ 
+-/* AddOrFindLevel0Tnode finds the level 0 tnode if it exists, otherwise first expands the tree.
+- * This happens in two steps:
+- *  1. If the tree isn't tall enough, then make it taller.
+- *  2. Scan down the tree towards the level 0 tnode adding tnodes if required.
+- *
+- * Used when modifying the tree.
+- *
+- *  If the tn argument is NULL, then a fresh tnode will be added otherwise the specified tn will
+- *  be plugged into the ttree.
+- */
+-
+-static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev,
+-                                      yaffs_FileStructure *fStruct,
+-                                      __u32 chunkId,
+-                                      yaffs_Tnode *passedTn)
++static void yaffs_hash_obj(yaffs_obj_t *in)
+ {
+-      int requiredTallness;
+-      int i;
+-      int l;
+-      yaffs_Tnode *tn;
+-
+-      __u32 x;
++      int bucket = yaffs_hash_fn(in->obj_id);
++      yaffs_dev_t *dev = in->my_dev;
+ 
++      ylist_add(&in->hash_link, &dev->obj_bucket[bucket].list);
++      dev->obj_bucket[bucket].count++;
++}
+ 
+-      /* Check sane level and page Id */
+-      if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL)
+-              return NULL;
++yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number)
++{
++      int bucket = yaffs_hash_fn(number);
++      struct ylist_head *i;
++      yaffs_obj_t *in;
+ 
+-      if (chunkId > YAFFS_MAX_CHUNK_ID)
+-              return NULL;
++      ylist_for_each(i, &dev->obj_bucket[bucket].list) {
++              /* Look if it is in the list */
++              if (i) {
++                      in = ylist_entry(i, yaffs_obj_t, hash_link);
++                      if (in->obj_id == number) {
+ 
+-      /* First check we're tall enough (ie enough topLevel) */
++                              /* Don't tell the VFS about this one if it is defered free */
++                              if (in->defered_free)
++                                      return NULL;
+ 
+-      x = chunkId >> YAFFS_TNODES_LEVEL0_BITS;
+-      requiredTallness = 0;
+-      while (x) {
+-              x >>= YAFFS_TNODES_INTERNAL_BITS;
+-              requiredTallness++;
++                              return in;
++                      }
++              }
+       }
+ 
++      return NULL;
++}
+ 
+-      if (requiredTallness > fStruct->topLevel) {
+-              /* Not tall enough, gotta make the tree taller */
+-              for (i = fStruct->topLevel; i < requiredTallness; i++) {
++yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number,
++                                  yaffs_obj_type type)
++{
++      yaffs_obj_t *theObject=NULL;
++      yaffs_tnode_t *tn = NULL;
+ 
+-                      tn = yaffs_GetTnode(dev);
++      if (number < 0)
++              number = yaffs_new_obj_id(dev);
+ 
+-                      if (tn) {
+-                              tn->internal[0] = fStruct->top;
+-                              fStruct->top = tn;
+-                      } else {
+-                              T(YAFFS_TRACE_ERROR,
+-                                (TSTR("yaffs: no more tnodes" TENDSTR)));
+-                      }
+-              }
++      if (type == YAFFS_OBJECT_TYPE_FILE) {
++              tn = yaffs_get_tnode(dev);
++              if (!tn)
++                      return NULL;
++      }
+ 
+-              fStruct->topLevel = requiredTallness;
++      theObject = yaffs_alloc_empty_obj(dev);
++      if (!theObject){
++              if(tn)
++                      yaffs_free_tnode(dev,tn);
++              return NULL;
+       }
+ 
+-      /* Traverse down to level 0, adding anything we need */
+ 
+-      l = fStruct->topLevel;
+-      tn = fStruct->top;
++      if (theObject) {
++              theObject->fake = 0;
++              theObject->rename_allowed = 1;
++              theObject->unlink_allowed = 1;
++              theObject->obj_id = number;
++              yaffs_hash_obj(theObject);
++              theObject->variant_type = type;
++#ifdef CONFIG_YAFFS_WINCE
++              yfsd_win_file_time_now(theObject->win_atime);
++              theObject->win_ctime[0] = theObject->win_mtime[0] =
++                  theObject->win_atime[0];
++              theObject->win_ctime[1] = theObject->win_mtime[1] =
++                  theObject->win_atime[1];
++
++#else
+ 
+-      if (l > 0) {
+-              while (l > 0 && tn) {
+-                      x = (chunkId >>
+-                           (YAFFS_TNODES_LEVEL0_BITS +
+-                            (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) &
+-                          YAFFS_TNODES_INTERNAL_MASK;
++              theObject->yst_atime = theObject->yst_mtime =
++                  theObject->yst_ctime = Y_CURRENT_TIME;
++#endif
++              switch (type) {
++              case YAFFS_OBJECT_TYPE_FILE:
++                      theObject->variant.file_variant.file_size = 0;
++                      theObject->variant.file_variant.scanned_size = 0;
++                      theObject->variant.file_variant.shrink_size = 0xFFFFFFFF;       /* max __u32 */
++                      theObject->variant.file_variant.top_level = 0;
++                      theObject->variant.file_variant.top = tn;
++                      break;
++              case YAFFS_OBJECT_TYPE_DIRECTORY:
++                      YINIT_LIST_HEAD(&theObject->variant.dir_variant.
++                                      children);
++                      YINIT_LIST_HEAD(&theObject->variant.dir_variant.
++                                      dirty);
++                      break;
++              case YAFFS_OBJECT_TYPE_SYMLINK:
++              case YAFFS_OBJECT_TYPE_HARDLINK:
++              case YAFFS_OBJECT_TYPE_SPECIAL:
++                      /* No action required */
++                      break;
++              case YAFFS_OBJECT_TYPE_UNKNOWN:
++                      /* todo this should not happen */
++                      break;
++              }
++      }
+ 
++      return theObject;
++}
+ 
+-                      if ((l > 1) && !tn->internal[x]) {
+-                              /* Add missing non-level-zero tnode */
+-                              tn->internal[x] = yaffs_GetTnode(dev);
++yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev,
++                                              int number,
++                                              yaffs_obj_type type)
++{
++      yaffs_obj_t *theObject = NULL;
+ 
+-                      } else if (l == 1) {
+-                              /* Looking from level 1 at level 0 */
+-                              if (passedTn) {
+-                                      /* If we already have one, then release it.*/
+-                                      if (tn->internal[x])
+-                                              yaffs_FreeTnode(dev, tn->internal[x]);
+-                                      tn->internal[x] = passedTn;
++      if (number > 0)
++              theObject = yaffs_find_by_number(dev, number);
+ 
+-                              } else if (!tn->internal[x]) {
+-                                      /* Don't have one, none passed in */
+-                                      tn->internal[x] = yaffs_GetTnode(dev);
+-                              }
+-                      }
++      if (!theObject)
++              theObject = yaffs_new_obj(dev, number, type);
+ 
+-                      tn = tn->internal[x];
+-                      l--;
+-              }
+-      } else {
+-              /* top is level 0 */
+-              if (passedTn) {
+-                      memcpy(tn, passedTn, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
+-                      yaffs_FreeTnode(dev, passedTn);
+-              }
+-      }
++      return theObject;
+ 
+-      return tn;
+ }
+ 
+-static int yaffs_FindChunkInGroup(yaffs_Device *dev, int theChunk,
+-                              yaffs_ExtendedTags *tags, int objectId,
+-                              int chunkInInode)
++
++YCHAR *yaffs_clone_str(const YCHAR *str)
+ {
+-      int j;
++      YCHAR *newStr = NULL;
++      int len;
+ 
+-      for (j = 0; theChunk && j < dev->chunkGroupSize; j++) {
+-              if (yaffs_CheckChunkBit(dev, theChunk / dev->nChunksPerBlock,
+-                              theChunk % dev->nChunksPerBlock)) {
+-                      yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL,
+-                                                      tags);
+-                      if (yaffs_TagsMatch(tags, objectId, chunkInInode)) {
+-                              /* found it; */
+-                              return theChunk;
+-                      }
+-              }
+-              theChunk++;
++      if (!str)
++              str = _Y("");
++
++      len = yaffs_strnlen(str,YAFFS_MAX_ALIAS_LENGTH);
++      newStr = YMALLOC((len + 1) * sizeof(YCHAR));
++      if (newStr){
++              yaffs_strncpy(newStr, str,len);
++              newStr[len] = 0;
+       }
+-      return -1;
+-}
++      return newStr;
+ 
++}
+ 
+-/* DeleteWorker scans backwards through the tnode tree and deletes all the
+- * chunks and tnodes in the file
+- * Returns 1 if the tree was deleted.
+- * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete.
++/*
++ * Mknod (create) a new object.
++ * equiv_obj only has meaning for a hard link;
++ * aliasString only has meaning for a symlink.
++ * rdev only has meaning for devices (a subset of special objects)
+  */
+ 
+-static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
+-                            int chunkOffset, int *limit)
++static yaffs_obj_t *yaffs_create_obj(yaffs_obj_type type,
++                                     yaffs_obj_t *parent,
++                                     const YCHAR *name,
++                                     __u32 mode,
++                                     __u32 uid,
++                                     __u32 gid,
++                                     yaffs_obj_t *equiv_obj,
++                                     const YCHAR *aliasString, __u32 rdev)
+ {
+-      int i;
+-      int chunkInInode;
+-      int theChunk;
+-      yaffs_ExtendedTags tags;
+-      int foundChunk;
+-      yaffs_Device *dev = in->myDev;
+-
+-      int allDone = 1;
+-
+-      if (tn) {
+-              if (level > 0) {
+-                      for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0;
+-                           i--) {
+-                              if (tn->internal[i]) {
+-                                      if (limit && (*limit) < 0) {
+-                                              allDone = 0;
+-                                      } else {
+-                                              allDone =
+-                                                      yaffs_DeleteWorker(in,
+-                                                              tn->
+-                                                              internal
+-                                                              [i],
+-                                                              level -
+-                                                              1,
+-                                                              (chunkOffset
+-                                                                      <<
+-                                                                      YAFFS_TNODES_INTERNAL_BITS)
+-                                                              + i,
+-                                                              limit);
+-                                      }
+-                                      if (allDone) {
+-                                              yaffs_FreeTnode(dev,
+-                                                              tn->
+-                                                              internal[i]);
+-                                              tn->internal[i] = NULL;
+-                                      }
+-                              }
+-                      }
+-                      return (allDone) ? 1 : 0;
+-              } else if (level == 0) {
+-                      int hitLimit = 0;
+-
+-                      for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit;
+-                                      i--) {
+-                              theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
+-                              if (theChunk) {
+-
+-                                      chunkInInode = (chunkOffset <<
+-                                              YAFFS_TNODES_LEVEL0_BITS) + i;
+-
+-                                      foundChunk =
+-                                              yaffs_FindChunkInGroup(dev,
+-                                                              theChunk,
+-                                                              &tags,
+-                                                              in->objectId,
+-                                                              chunkInInode);
+-
+-                                      if (foundChunk > 0) {
+-                                              yaffs_DeleteChunk(dev,
+-                                                                foundChunk, 1,
+-                                                                __LINE__);
+-                                              in->nDataChunks--;
+-                                              if (limit) {
+-                                                      *limit = *limit - 1;
+-                                                      if (*limit <= 0)
+-                                                              hitLimit = 1;
+-                                              }
+-
+-                                      }
+-
+-                                      yaffs_PutLevel0Tnode(dev, tn, i, 0);
+-                              }
+-
+-                      }
+-                      return (i < 0) ? 1 : 0;
+-
+-              }
+-
+-      }
+-
+-      return 1;
+-
+-}
+-
+-static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk)
+-{
+-      yaffs_BlockInfo *theBlock;
+-
+-      T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk));
+-
+-      theBlock = yaffs_GetBlockInfo(dev, chunk / dev->nChunksPerBlock);
+-      if (theBlock) {
+-              theBlock->softDeletions++;
+-              dev->nFreeChunks++;
+-      }
+-}
+-
+-/* SoftDeleteWorker scans backwards through the tnode tree and soft deletes all the chunks in the file.
+- * All soft deleting does is increment the block's softdelete count and pulls the chunk out
+- * of the tnode.
+- * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted.
+- */
+-
+-static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn,
+-                                __u32 level, int chunkOffset)
+-{
+-      int i;
+-      int theChunk;
+-      int allDone = 1;
+-      yaffs_Device *dev = in->myDev;
+-
+-      if (tn) {
+-              if (level > 0) {
+-
+-                      for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0;
+-                           i--) {
+-                              if (tn->internal[i]) {
+-                                      allDone =
+-                                          yaffs_SoftDeleteWorker(in,
+-                                                                 tn->
+-                                                                 internal[i],
+-                                                                 level - 1,
+-                                                                 (chunkOffset
+-                                                                  <<
+-                                                                  YAFFS_TNODES_INTERNAL_BITS)
+-                                                                 + i);
+-                                      if (allDone) {
+-                                              yaffs_FreeTnode(dev,
+-                                                              tn->
+-                                                              internal[i]);
+-                                              tn->internal[i] = NULL;
+-                                      } else {
+-                                              /* Hoosterman... how could this happen? */
+-                                      }
+-                              }
+-                      }
+-                      return (allDone) ? 1 : 0;
+-              } else if (level == 0) {
+-
+-                      for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) {
+-                              theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
+-                              if (theChunk) {
+-                                      /* Note this does not find the real chunk, only the chunk group.
+-                                       * We make an assumption that a chunk group is not larger than
+-                                       * a block.
+-                                       */
+-                                      yaffs_SoftDeleteChunk(dev, theChunk);
+-                                      yaffs_PutLevel0Tnode(dev, tn, i, 0);
+-                              }
+-
+-                      }
+-                      return 1;
+-
+-              }
+-
+-      }
+-
+-      return 1;
+-
+-}
+-
+-static void yaffs_SoftDeleteFile(yaffs_Object *obj)
+-{
+-      if (obj->deleted &&
+-          obj->variantType == YAFFS_OBJECT_TYPE_FILE && !obj->softDeleted) {
+-              if (obj->nDataChunks <= 0) {
+-                      /* Empty file with no duplicate object headers, just delete it immediately */
+-                      yaffs_FreeTnode(obj->myDev,
+-                                      obj->variant.fileVariant.top);
+-                      obj->variant.fileVariant.top = NULL;
+-                      T(YAFFS_TRACE_TRACING,
+-                        (TSTR("yaffs: Deleting empty file %d" TENDSTR),
+-                         obj->objectId));
+-                      yaffs_DoGenericObjectDeletion(obj);
+-              } else {
+-                      yaffs_SoftDeleteWorker(obj,
+-                                             obj->variant.fileVariant.top,
+-                                             obj->variant.fileVariant.
+-                                             topLevel, 0);
+-                      obj->softDeleted = 1;
+-              }
+-      }
+-}
+-
+-/* Pruning removes any part of the file structure tree that is beyond the
+- * bounds of the file (ie that does not point to chunks).
+- *
+- * A file should only get pruned when its size is reduced.
+- *
+- * Before pruning, the chunks must be pulled from the tree and the
+- * level 0 tnode entries must be zeroed out.
+- * Could also use this for file deletion, but that's probably better handled
+- * by a special case.
+- */
+-
+-static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn,
+-                              __u32 level, int del0)
+-{
+-      int i;
+-      int hasData;
+-
+-      if (tn) {
+-              hasData = 0;
+-
+-              for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) {
+-                      if (tn->internal[i] && level > 0) {
+-                              tn->internal[i] =
+-                                  yaffs_PruneWorker(dev, tn->internal[i],
+-                                                    level - 1,
+-                                                    (i == 0) ? del0 : 1);
+-                      }
+-
+-                      if (tn->internal[i])
+-                              hasData++;
+-              }
+-
+-              if (hasData == 0 && del0) {
+-                      /* Free and return NULL */
+-
+-                      yaffs_FreeTnode(dev, tn);
+-                      tn = NULL;
+-              }
+-
+-      }
+-
+-      return tn;
+-
+-}
+-
+-static int yaffs_PruneFileStructure(yaffs_Device *dev,
+-                              yaffs_FileStructure *fStruct)
+-{
+-      int i;
+-      int hasData;
+-      int done = 0;
+-      yaffs_Tnode *tn;
+-
+-      if (fStruct->topLevel > 0) {
+-              fStruct->top =
+-                  yaffs_PruneWorker(dev, fStruct->top, fStruct->topLevel, 0);
+-
+-              /* Now we have a tree with all the non-zero branches NULL but the height
+-               * is the same as it was.
+-               * Let's see if we can trim internal tnodes to shorten the tree.
+-               * We can do this if only the 0th element in the tnode is in use
+-               * (ie all the non-zero are NULL)
+-               */
+-
+-              while (fStruct->topLevel && !done) {
+-                      tn = fStruct->top;
+-
+-                      hasData = 0;
+-                      for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) {
+-                              if (tn->internal[i])
+-                                      hasData++;
+-                      }
+-
+-                      if (!hasData) {
+-                              fStruct->top = tn->internal[0];
+-                              fStruct->topLevel--;
+-                              yaffs_FreeTnode(dev, tn);
+-                      } else {
+-                              done = 1;
+-                      }
+-              }
+-      }
+-
+-      return YAFFS_OK;
+-}
+-
+-/*-------------------- End of File Structure functions.-------------------*/
+-
+-/* yaffs_CreateFreeObjects creates a bunch more objects and
+- * adds them to the object free list.
+- */
+-static int yaffs_CreateFreeObjects(yaffs_Device *dev, int nObjects)
+-{
+-      int i;
+-      yaffs_Object *newObjects;
+-      yaffs_ObjectList *list;
+-
+-      if (nObjects < 1)
+-              return YAFFS_OK;
+-
+-      /* make these things */
+-      newObjects = YMALLOC(nObjects * sizeof(yaffs_Object));
+-      list = YMALLOC(sizeof(yaffs_ObjectList));
+-
+-      if (!newObjects || !list) {
+-              if (newObjects)
+-                      YFREE(newObjects);
+-              if (list)
+-                      YFREE(list);
+-              T(YAFFS_TRACE_ALLOCATE,
+-                (TSTR("yaffs: Could not allocate more objects" TENDSTR)));
+-              return YAFFS_FAIL;
+-      }
+-
+-      /* Hook them into the free list */
+-      for (i = 0; i < nObjects - 1; i++) {
+-              newObjects[i].siblings.next =
+-                              (struct ylist_head *)(&newObjects[i + 1]);
+-      }
+-
+-      newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects;
+-      dev->freeObjects = newObjects;
+-      dev->nFreeObjects += nObjects;
+-      dev->nObjectsCreated += nObjects;
+-
+-      /* Now add this bunch of Objects to a list for freeing up. */
+-
+-      list->objects = newObjects;
+-      list->next = dev->allocatedObjectList;
+-      dev->allocatedObjectList = list;
+-
+-      return YAFFS_OK;
+-}
+-
+-
+-/* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */
+-static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device *dev)
+-{
+-      yaffs_Object *tn = NULL;
+-
+-#ifdef VALGRIND_TEST
+-      tn = YMALLOC(sizeof(yaffs_Object));
+-#else
+-      /* If there are none left make more */
+-      if (!dev->freeObjects)
+-              yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS);
+-
+-      if (dev->freeObjects) {
+-              tn = dev->freeObjects;
+-              dev->freeObjects =
+-                      (yaffs_Object *) (dev->freeObjects->siblings.next);
+-              dev->nFreeObjects--;
+-      }
+-#endif
+-      if (tn) {
+-              /* Now sweeten it up... */
+-
+-              memset(tn, 0, sizeof(yaffs_Object));
+-              tn->beingCreated = 1;
+-
+-              tn->myDev = dev;
+-              tn->hdrChunk = 0;
+-              tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN;
+-              YINIT_LIST_HEAD(&(tn->hardLinks));
+-              YINIT_LIST_HEAD(&(tn->hashLink));
+-              YINIT_LIST_HEAD(&tn->siblings);
+-
+-
+-              /* Now make the directory sane */
+-              if (dev->rootDir) {
+-                      tn->parent = dev->rootDir;
+-                      ylist_add(&(tn->siblings), &dev->rootDir->variant.directoryVariant.children);
+-              }
+-
+-              /* Add it to the lost and found directory.
+-               * NB Can't put root or lostNFound in lostNFound so
+-               * check if lostNFound exists first
+-               */
+-              if (dev->lostNFoundDir)
+-                      yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn);
+-
+-              tn->beingCreated = 0;
+-      }
+-
+-      dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+-
+-      return tn;
+-}
+-
+-static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device *dev, int number,
+-                                             __u32 mode)
+-{
+-
+-      yaffs_Object *obj =
+-          yaffs_CreateNewObject(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY);
+-      if (obj) {
+-              obj->fake = 1;          /* it is fake so it might have no NAND presence... */
+-              obj->renameAllowed = 0; /* ... and we're not allowed to rename it... */
+-              obj->unlinkAllowed = 0; /* ... or unlink it */
+-              obj->deleted = 0;
+-              obj->unlinked = 0;
+-              obj->yst_mode = mode;
+-              obj->myDev = dev;
+-              obj->hdrChunk = 0;      /* Not a valid chunk. */
+-      }
+-
+-      return obj;
+-
+-}
+-
+-static void yaffs_UnhashObject(yaffs_Object *tn)
+-{
+-      int bucket;
+-      yaffs_Device *dev = tn->myDev;
+-
+-      /* If it is still linked into the bucket list, free from the list */
+-      if (!ylist_empty(&tn->hashLink)) {
+-              ylist_del_init(&tn->hashLink);
+-              bucket = yaffs_HashFunction(tn->objectId);
+-              dev->objectBucket[bucket].count--;
+-      }
+-}
+-
+-/*  FreeObject frees up a Object and puts it back on the free list */
+-static void yaffs_FreeObject(yaffs_Object *tn)
+-{
+-      yaffs_Device *dev = tn->myDev;
+-
+-#ifdef __KERNEL__
+-      T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), tn, tn->myInode));
+-#endif
+-
+-      if (tn->parent)
+-              YBUG();
+-      if (!ylist_empty(&tn->siblings))
+-              YBUG();
+-
+-
+-#ifdef __KERNEL__
+-      if (tn->myInode) {
+-              /* We're still hooked up to a cached inode.
+-               * Don't delete now, but mark for later deletion
+-               */
+-              tn->deferedFree = 1;
+-              return;
+-      }
+-#endif
+-
+-      yaffs_UnhashObject(tn);
+-
+-#ifdef VALGRIND_TEST
+-      YFREE(tn);
+-#else
+-      /* Link into the free list. */
+-      tn->siblings.next = (struct ylist_head *)(dev->freeObjects);
+-      dev->freeObjects = tn;
+-      dev->nFreeObjects++;
+-#endif
+-      dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+-}
+-
+-#ifdef __KERNEL__
+-
+-void yaffs_HandleDeferedFree(yaffs_Object *obj)
+-{
+-      if (obj->deferedFree)
+-              yaffs_FreeObject(obj);
+-}
+-
+-#endif
+-
+-static void yaffs_DeinitialiseObjects(yaffs_Device *dev)
+-{
+-      /* Free the list of allocated Objects */
+-
+-      yaffs_ObjectList *tmp;
+-
+-      while (dev->allocatedObjectList) {
+-              tmp = dev->allocatedObjectList->next;
+-              YFREE(dev->allocatedObjectList->objects);
+-              YFREE(dev->allocatedObjectList);
+-
+-              dev->allocatedObjectList = tmp;
+-      }
+-
+-      dev->freeObjects = NULL;
+-      dev->nFreeObjects = 0;
+-}
+-
+-static void yaffs_InitialiseObjects(yaffs_Device *dev)
+-{
+-      int i;
+-
+-      dev->allocatedObjectList = NULL;
+-      dev->freeObjects = NULL;
+-      dev->nFreeObjects = 0;
+-
+-      for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
+-              YINIT_LIST_HEAD(&dev->objectBucket[i].list);
+-              dev->objectBucket[i].count = 0;
+-      }
+-}
+-
+-static int yaffs_FindNiceObjectBucket(yaffs_Device *dev)
+-{
+-      static int x;
+-      int i;
+-      int l = 999;
+-      int lowest = 999999;
+-
+-      /* First let's see if we can find one that's empty. */
+-
+-      for (i = 0; i < 10 && lowest > 0; i++) {
+-              x++;
+-              x %= YAFFS_NOBJECT_BUCKETS;
+-              if (dev->objectBucket[x].count < lowest) {
+-                      lowest = dev->objectBucket[x].count;
+-                      l = x;
+-              }
+-
+-      }
+-
+-      /* If we didn't find an empty list, then try
+-       * looking a bit further for a short one
+-       */
+-
+-      for (i = 0; i < 10 && lowest > 3; i++) {
+-              x++;
+-              x %= YAFFS_NOBJECT_BUCKETS;
+-              if (dev->objectBucket[x].count < lowest) {
+-                      lowest = dev->objectBucket[x].count;
+-                      l = x;
+-              }
+-
+-      }
+-
+-      return l;
+-}
+-
+-static int yaffs_CreateNewObjectNumber(yaffs_Device *dev)
+-{
+-      int bucket = yaffs_FindNiceObjectBucket(dev);
+-
+-      /* Now find an object value that has not already been taken
+-       * by scanning the list.
+-       */
+-
+-      int found = 0;
+-      struct ylist_head *i;
+-
+-      __u32 n = (__u32) bucket;
+-
+-      /* yaffs_CheckObjectHashSanity();  */
+-
+-      while (!found) {
+-              found = 1;
+-              n += YAFFS_NOBJECT_BUCKETS;
+-              if (1 || dev->objectBucket[bucket].count > 0) {
+-                      ylist_for_each(i, &dev->objectBucket[bucket].list) {
+-                              /* If there is already one in the list */
+-                              if (i && ylist_entry(i, yaffs_Object,
+-                                              hashLink)->objectId == n) {
+-                                      found = 0;
+-                              }
+-                      }
+-              }
+-      }
+-
+-      return n;
+-}
+-
+-static void yaffs_HashObject(yaffs_Object *in)
+-{
+-      int bucket = yaffs_HashFunction(in->objectId);
+-      yaffs_Device *dev = in->myDev;
+-
+-      ylist_add(&in->hashLink, &dev->objectBucket[bucket].list);
+-      dev->objectBucket[bucket].count++;
+-}
+-
+-yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number)
+-{
+-      int bucket = yaffs_HashFunction(number);
+-      struct ylist_head *i;
+-      yaffs_Object *in;
+-
+-      ylist_for_each(i, &dev->objectBucket[bucket].list) {
+-              /* Look if it is in the list */
+-              if (i) {
+-                      in = ylist_entry(i, yaffs_Object, hashLink);
+-                      if (in->objectId == number) {
+-#ifdef __KERNEL__
+-                              /* Don't tell the VFS about this one if it is defered free */
+-                              if (in->deferedFree)
+-                                      return NULL;
+-#endif
+-
+-                              return in;
+-                      }
+-              }
+-      }
+-
+-      return NULL;
+-}
+-
+-yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
+-                                  yaffs_ObjectType type)
+-{
+-      yaffs_Object *theObject;
+-      yaffs_Tnode *tn = NULL;
+-
+-      if (number < 0)
+-              number = yaffs_CreateNewObjectNumber(dev);
+-
+-      theObject = yaffs_AllocateEmptyObject(dev);
+-      if (!theObject)
+-              return NULL;
+-
+-      if (type == YAFFS_OBJECT_TYPE_FILE) {
+-              tn = yaffs_GetTnode(dev);
+-              if (!tn) {
+-                      yaffs_FreeObject(theObject);
+-                      return NULL;
+-              }
+-      }
+-
+-      if (theObject) {
+-              theObject->fake = 0;
+-              theObject->renameAllowed = 1;
+-              theObject->unlinkAllowed = 1;
+-              theObject->objectId = number;
+-              yaffs_HashObject(theObject);
+-              theObject->variantType = type;
+-#ifdef CONFIG_YAFFS_WINCE
+-              yfsd_WinFileTimeNow(theObject->win_atime);
+-              theObject->win_ctime[0] = theObject->win_mtime[0] =
+-                  theObject->win_atime[0];
+-              theObject->win_ctime[1] = theObject->win_mtime[1] =
+-                  theObject->win_atime[1];
+-
+-#else
+-
+-              theObject->yst_atime = theObject->yst_mtime =
+-                  theObject->yst_ctime = Y_CURRENT_TIME;
+-#endif
+-              switch (type) {
+-              case YAFFS_OBJECT_TYPE_FILE:
+-                      theObject->variant.fileVariant.fileSize = 0;
+-                      theObject->variant.fileVariant.scannedFileSize = 0;
+-                      theObject->variant.fileVariant.shrinkSize = 0xFFFFFFFF; /* max __u32 */
+-                      theObject->variant.fileVariant.topLevel = 0;
+-                      theObject->variant.fileVariant.top = tn;
+-                      break;
+-              case YAFFS_OBJECT_TYPE_DIRECTORY:
+-                      YINIT_LIST_HEAD(&theObject->variant.directoryVariant.
+-                                      children);
+-                      break;
+-              case YAFFS_OBJECT_TYPE_SYMLINK:
+-              case YAFFS_OBJECT_TYPE_HARDLINK:
+-              case YAFFS_OBJECT_TYPE_SPECIAL:
+-                      /* No action required */
+-                      break;
+-              case YAFFS_OBJECT_TYPE_UNKNOWN:
+-                      /* todo this should not happen */
+-                      break;
+-              }
+-      }
+-
+-      return theObject;
+-}
+-
+-static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device *dev,
+-                                                    int number,
+-                                                    yaffs_ObjectType type)
+-{
+-      yaffs_Object *theObject = NULL;
+-
+-      if (number > 0)
+-              theObject = yaffs_FindObjectByNumber(dev, number);
+-
+-      if (!theObject)
+-              theObject = yaffs_CreateNewObject(dev, number, type);
+-
+-      return theObject;
+-
+-}
+-
+-
+-static YCHAR *yaffs_CloneString(const YCHAR *str)
+-{
+-      YCHAR *newStr = NULL;
+-
+-      if (str && *str) {
+-              newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR));
+-              if (newStr)
+-                      yaffs_strcpy(newStr, str);
+-      }
+-
+-      return newStr;
+-
+-}
+-
+-/*
+- * Mknod (create) a new object.
+- * equivalentObject only has meaning for a hard link;
+- * aliasString only has meaning for a sumlink.
+- * rdev only has meaning for devices (a subset of special objects)
+- */
+-
+-static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type,
+-                                     yaffs_Object *parent,
+-                                     const YCHAR *name,
+-                                     __u32 mode,
+-                                     __u32 uid,
+-                                     __u32 gid,
+-                                     yaffs_Object *equivalentObject,
+-                                     const YCHAR *aliasString, __u32 rdev)
+-{
+-      yaffs_Object *in;
+-      YCHAR *str = NULL;
+-
+-      yaffs_Device *dev = parent->myDev;
+-
+-      /* Check if the entry exists. If it does then fail the call since we don't want a dup.*/
+-      if (yaffs_FindObjectByName(parent, name))
+-              return NULL;
+-
+-      in = yaffs_CreateNewObject(dev, -1, type);
+-
+-      if (!in)
+-              return YAFFS_FAIL;
+-
+-      if (type == YAFFS_OBJECT_TYPE_SYMLINK) {
+-              str = yaffs_CloneString(aliasString);
+-              if (!str) {
+-                      yaffs_FreeObject(in);
+-                      return NULL;
+-              }
+-      }
+-
+-
+-
+-      if (in) {
+-              in->hdrChunk = 0;
+-              in->valid = 1;
+-              in->variantType = type;
+-
+-              in->yst_mode = mode;
+-
+-#ifdef CONFIG_YAFFS_WINCE
+-              yfsd_WinFileTimeNow(in->win_atime);
+-              in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0];
+-              in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1];
+-
+-#else
+-              in->yst_atime = in->yst_mtime = in->yst_ctime = Y_CURRENT_TIME;
+-
+-              in->yst_rdev = rdev;
+-              in->yst_uid = uid;
+-              in->yst_gid = gid;
+-#endif
+-              in->nDataChunks = 0;
+-
+-              yaffs_SetObjectName(in, name);
+-              in->dirty = 1;
+-
+-              yaffs_AddObjectToDirectory(parent, in);
+-
+-              in->myDev = parent->myDev;
+-
+-              switch (type) {
+-              case YAFFS_OBJECT_TYPE_SYMLINK:
+-                      in->variant.symLinkVariant.alias = str;
+-                      break;
+-              case YAFFS_OBJECT_TYPE_HARDLINK:
+-                      in->variant.hardLinkVariant.equivalentObject =
+-                              equivalentObject;
+-                      in->variant.hardLinkVariant.equivalentObjectId =
+-                              equivalentObject->objectId;
+-                      ylist_add(&in->hardLinks, &equivalentObject->hardLinks);
+-                      break;
+-              case YAFFS_OBJECT_TYPE_FILE:
+-              case YAFFS_OBJECT_TYPE_DIRECTORY:
+-              case YAFFS_OBJECT_TYPE_SPECIAL:
+-              case YAFFS_OBJECT_TYPE_UNKNOWN:
+-                      /* do nothing */
+-                      break;
+-              }
+-
+-              if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0) < 0) {
+-                      /* Could not create the object header, fail the creation */
+-                      yaffs_DeleteObject(in);
+-                      in = NULL;
+-              }
+-
+-      }
+-
+-      return in;
+-}
+-
+-yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name,
+-                      __u32 mode, __u32 uid, __u32 gid)
+-{
+-      return yaffs_MknodObject(YAFFS_OBJECT_TYPE_FILE, parent, name, mode,
+-                              uid, gid, NULL, NULL, 0);
+-}
+-
+-yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name,
+-                              __u32 mode, __u32 uid, __u32 gid)
+-{
+-      return yaffs_MknodObject(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name,
+-                               mode, uid, gid, NULL, NULL, 0);
+-}
+-
+-yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name,
+-                              __u32 mode, __u32 uid, __u32 gid, __u32 rdev)
+-{
+-      return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode,
+-                               uid, gid, NULL, NULL, rdev);
+-}
+-
+-yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name,
+-                              __u32 mode, __u32 uid, __u32 gid,
+-                              const YCHAR *alias)
+-{
+-      return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode,
+-                              uid, gid, NULL, alias, 0);
+-}
+-
+-/* yaffs_Link returns the object id of the equivalent object.*/
+-yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name,
+-                      yaffs_Object *equivalentObject)
+-{
+-      /* Get the real object in case we were fed a hard link as an equivalent object */
+-      equivalentObject = yaffs_GetEquivalentObject(equivalentObject);
+-
+-      if (yaffs_MknodObject
+-          (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0,
+-           equivalentObject, NULL, 0)) {
+-              return equivalentObject;
+-      } else {
+-              return NULL;
+-      }
+-
+-}
+-
+-static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir,
+-                              const YCHAR *newName, int force, int shadows)
+-{
+-      int unlinkOp;
+-      int deleteOp;
+-
+-      yaffs_Object *existingTarget;
+-
+-      if (newDir == NULL)
+-              newDir = obj->parent;   /* use the old directory */
+-
+-      if (newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+-              T(YAFFS_TRACE_ALWAYS,
+-                (TSTR
+-                 ("tragedy: yaffs_ChangeObjectName: newDir is not a directory"
+-                  TENDSTR)));
+-              YBUG();
+-      }
+-
+-      /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */
+-      if (obj->myDev->isYaffs2)
+-              unlinkOp = (newDir == obj->myDev->unlinkedDir);
+-      else
+-              unlinkOp = (newDir == obj->myDev->unlinkedDir
+-                          && obj->variantType == YAFFS_OBJECT_TYPE_FILE);
+-
+-      deleteOp = (newDir == obj->myDev->deletedDir);
+-
+-      existingTarget = yaffs_FindObjectByName(newDir, newName);
+-
+-      /* If the object is a file going into the unlinked directory,
+-       *   then it is OK to just stuff it in since duplicate names are allowed.
+-       *   else only proceed if the new name does not exist and if we're putting
+-       *   it into a directory.
+-       */
+-      if ((unlinkOp ||
+-           deleteOp ||
+-           force ||
+-           (shadows > 0) ||
+-           !existingTarget) &&
+-          newDir->variantType == YAFFS_OBJECT_TYPE_DIRECTORY) {
+-              yaffs_SetObjectName(obj, newName);
+-              obj->dirty = 1;
+-
+-              yaffs_AddObjectToDirectory(newDir, obj);
+-
+-              if (unlinkOp)
+-                      obj->unlinked = 1;
+-
+-              /* If it is a deletion then we mark it as a shrink for gc purposes. */
+-              if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows) >= 0)
+-                      return YAFFS_OK;
+-      }
+-
+-      return YAFFS_FAIL;
+-}
+-
+-int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName,
+-              yaffs_Object *newDir, const YCHAR *newName)
+-{
+-      yaffs_Object *obj = NULL;
+-      yaffs_Object *existingTarget = NULL;
+-      int force = 0;
+-
+-
+-      if (!oldDir || oldDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
+-              YBUG();
+-      if (!newDir || newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
+-              YBUG();
+-
+-#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
+-      /* Special case for case insemsitive systems (eg. WinCE).
+-       * While look-up is case insensitive, the name isn't.
+-       * Therefore we might want to change x.txt to X.txt
+-      */
+-      if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0)
+-              force = 1;
+-#endif
+-
+-      else if (yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH)
+-              /* ENAMETOOLONG */
+-              return YAFFS_FAIL;
+-
+-      obj = yaffs_FindObjectByName(oldDir, oldName);
+-
+-      if (obj && obj->renameAllowed) {
+-
+-              /* Now do the handling for an existing target, if there is one */
+-
+-              existingTarget = yaffs_FindObjectByName(newDir, newName);
+-              if (existingTarget &&
+-                      existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
+-                      !ylist_empty(&existingTarget->variant.directoryVariant.children)) {
+-                      /* There is a target that is a non-empty directory, so we fail */
+-                      return YAFFS_FAIL;      /* EEXIST or ENOTEMPTY */
+-              } else if (existingTarget && existingTarget != obj) {
+-                      /* Nuke the target first, using shadowing,
+-                       * but only if it isn't the same object
+-                       */
+-                      yaffs_ChangeObjectName(obj, newDir, newName, force,
+-                                              existingTarget->objectId);
+-                      yaffs_UnlinkObject(existingTarget);
+-              }
+-
+-              return yaffs_ChangeObjectName(obj, newDir, newName, 1, 0);
+-      }
+-      return YAFFS_FAIL;
+-}
+-
+-/*------------------------- Block Management and Page Allocation ----------------*/
+-
+-static int yaffs_InitialiseBlocks(yaffs_Device *dev)
+-{
+-      int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
+-
+-      dev->blockInfo = NULL;
+-      dev->chunkBits = NULL;
+-
+-      dev->allocationBlock = -1;      /* force it to get a new one */
+-
+-      /* If the first allocation strategy fails, thry the alternate one */
+-      dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo));
+-      if (!dev->blockInfo) {
+-              dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo));
+-              dev->blockInfoAlt = 1;
+-      } else
+-              dev->blockInfoAlt = 0;
+-
+-      if (dev->blockInfo) {
+-              /* Set up dynamic blockinfo stuff. */
+-              dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */
+-              dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks);
+-              if (!dev->chunkBits) {
+-                      dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks);
+-                      dev->chunkBitsAlt = 1;
+-              } else
+-                      dev->chunkBitsAlt = 0;
+-      }
+-
+-      if (dev->blockInfo && dev->chunkBits) {
+-              memset(dev->blockInfo, 0, nBlocks * sizeof(yaffs_BlockInfo));
+-              memset(dev->chunkBits, 0, dev->chunkBitmapStride * nBlocks);
+-              return YAFFS_OK;
+-      }
+-
+-      return YAFFS_FAIL;
+-}
+-
+-static void yaffs_DeinitialiseBlocks(yaffs_Device *dev)
+-{
+-      if (dev->blockInfoAlt && dev->blockInfo)
+-              YFREE_ALT(dev->blockInfo);
+-      else if (dev->blockInfo)
+-              YFREE(dev->blockInfo);
+-
+-      dev->blockInfoAlt = 0;
+-
+-      dev->blockInfo = NULL;
+-
+-      if (dev->chunkBitsAlt && dev->chunkBits)
+-              YFREE_ALT(dev->chunkBits);
+-      else if (dev->chunkBits)
+-              YFREE(dev->chunkBits);
+-      dev->chunkBitsAlt = 0;
+-      dev->chunkBits = NULL;
+-}
+-
+-static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device *dev,
+-                                      yaffs_BlockInfo *bi)
+-{
+-      int i;
+-      __u32 seq;
+-      yaffs_BlockInfo *b;
+-
+-      if (!dev->isYaffs2)
+-              return 1;       /* disqualification only applies to yaffs2. */
+-
+-      if (!bi->hasShrinkHeader)
+-              return 1;       /* can gc */
+-
+-      /* Find the oldest dirty sequence number if we don't know it and save it
+-       * so we don't have to keep recomputing it.
+-       */
+-      if (!dev->oldestDirtySequence) {
+-              seq = dev->sequenceNumber;
+-
+-              for (i = dev->internalStartBlock; i <= dev->internalEndBlock;
+-                              i++) {
+-                      b = yaffs_GetBlockInfo(dev, i);
+-                      if (b->blockState == YAFFS_BLOCK_STATE_FULL &&
+-                          (b->pagesInUse - b->softDeletions) <
+-                          dev->nChunksPerBlock && b->sequenceNumber < seq) {
+-                              seq = b->sequenceNumber;
+-                      }
+-              }
+-              dev->oldestDirtySequence = seq;
+-      }
+-
+-      /* Can't do gc of this block if there are any blocks older than this one that have
+-       * discarded pages.
+-       */
+-      return (bi->sequenceNumber <= dev->oldestDirtySequence);
+-}
+-
+-/* FindDiretiestBlock is used to select the dirtiest block (or close enough)
+- * for garbage collection.
+- */
+-
+-static int yaffs_FindBlockForGarbageCollection(yaffs_Device *dev,
+-                                      int aggressive)
+-{
+-      int b = dev->currentDirtyChecker;
+-
+-      int i;
+-      int iterations;
+-      int dirtiest = -1;
+-      int pagesInUse = 0;
+-      int prioritised = 0;
+-      yaffs_BlockInfo *bi;
+-      int pendingPrioritisedExist = 0;
+-
+-      /* First let's see if we need to grab a prioritised block */
+-      if (dev->hasPendingPrioritisedGCs) {
+-              for (i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++) {
+-
+-                      bi = yaffs_GetBlockInfo(dev, i);
+-                      /* yaffs_VerifyBlock(dev,bi,i); */
+-
+-                      if (bi->gcPrioritise) {
+-                              pendingPrioritisedExist = 1;
+-                              if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
+-                                 yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
+-                                      pagesInUse = (bi->pagesInUse - bi->softDeletions);
+-                                      dirtiest = i;
+-                                      prioritised = 1;
+-                                      aggressive = 1; /* Fool the non-aggressive skip logiv below */
+-                              }
+-                      }
+-              }
+-
+-              if (!pendingPrioritisedExist) /* None found, so we can clear this */
+-                      dev->hasPendingPrioritisedGCs = 0;
+-      }
+-
+-      /* If we're doing aggressive GC then we are happy to take a less-dirty block, and
+-       * search harder.
+-       * else (we're doing a leasurely gc), then we only bother to do this if the
+-       * block has only a few pages in use.
+-       */
+-
+-      dev->nonAggressiveSkip--;
+-
+-      if (!aggressive && (dev->nonAggressiveSkip > 0))
+-              return -1;
+-
+-      if (!prioritised)
+-              pagesInUse =
+-                      (aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1;
+-
+-      if (aggressive)
+-              iterations =
+-                  dev->internalEndBlock - dev->internalStartBlock + 1;
+-      else {
+-              iterations =
+-                  dev->internalEndBlock - dev->internalStartBlock + 1;
+-              iterations = iterations / 16;
+-              if (iterations > 200)
+-                      iterations = 200;
+-      }
+-
+-      for (i = 0; i <= iterations && pagesInUse > 0 && !prioritised; i++) {
+-              b++;
+-              if (b < dev->internalStartBlock || b > dev->internalEndBlock)
+-                      b = dev->internalStartBlock;
+-
+-              if (b < dev->internalStartBlock || b > dev->internalEndBlock) {
+-                      T(YAFFS_TRACE_ERROR,
+-                        (TSTR("**>> Block %d is not valid" TENDSTR), b));
+-                      YBUG();
+-              }
+-
+-              bi = yaffs_GetBlockInfo(dev, b);
+-
+-              if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
+-                      (bi->pagesInUse - bi->softDeletions) < pagesInUse &&
+-                              yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
+-                      dirtiest = b;
+-                      pagesInUse = (bi->pagesInUse - bi->softDeletions);
+-              }
+-      }
+-
+-      dev->currentDirtyChecker = b;
+-
+-      if (dirtiest > 0) {
+-              T(YAFFS_TRACE_GC,
+-                (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), dirtiest,
+-                 dev->nChunksPerBlock - pagesInUse, prioritised));
+-      }
+-
+-      dev->oldestDirtySequence = 0;
+-
+-      if (dirtiest > 0)
+-              dev->nonAggressiveSkip = 4;
+-
+-      return dirtiest;
+-}
+-
+-static void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo)
+-{
+-      yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo);
+-
+-      int erasedOk = 0;
+-
+-      /* If the block is still healthy erase it and mark as clean.
+-       * If the block has had a data failure, then retire it.
+-       */
+-
+-      T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE,
+-              (TSTR("yaffs_BlockBecameDirty block %d state %d %s"TENDSTR),
+-              blockNo, bi->blockState, (bi->needsRetiring) ? "needs retiring" : ""));
+-
+-      bi->blockState = YAFFS_BLOCK_STATE_DIRTY;
+-
+-      if (!bi->needsRetiring) {
+-              yaffs_InvalidateCheckpoint(dev);
+-              erasedOk = yaffs_EraseBlockInNAND(dev, blockNo);
+-              if (!erasedOk) {
+-                      dev->nErasureFailures++;
+-                      T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+-                        (TSTR("**>> Erasure failed %d" TENDSTR), blockNo));
+-              }
+-      }
+-
+-      if (erasedOk &&
+-          ((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) {
+-              int i;
+-              for (i = 0; i < dev->nChunksPerBlock; i++) {
+-                      if (!yaffs_CheckChunkErased
+-                          (dev, blockNo * dev->nChunksPerBlock + i)) {
+-                              T(YAFFS_TRACE_ERROR,
+-                                (TSTR
+-                                 (">>Block %d erasure supposedly OK, but chunk %d not erased"
+-                                  TENDSTR), blockNo, i));
+-                      }
+-              }
+-      }
+-
+-      if (erasedOk) {
+-              /* Clean it up... */
+-              bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
+-              dev->nErasedBlocks++;
+-              bi->pagesInUse = 0;
+-              bi->softDeletions = 0;
+-              bi->hasShrinkHeader = 0;
+-              bi->skipErasedCheck = 1;  /* This is clean, so no need to check */
+-              bi->gcPrioritise = 0;
+-              yaffs_ClearChunkBits(dev, blockNo);
+-
+-              T(YAFFS_TRACE_ERASE,
+-                (TSTR("Erased block %d" TENDSTR), blockNo));
+-      } else {
+-              dev->nFreeChunks -= dev->nChunksPerBlock;       /* We lost a block of free space */
+-
+-              yaffs_RetireBlock(dev, blockNo);
+-              T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+-                (TSTR("**>> Block %d retired" TENDSTR), blockNo));
+-      }
+-}
+-
+-static int yaffs_FindBlockForAllocation(yaffs_Device *dev)
+-{
+-      int i;
+-
+-      yaffs_BlockInfo *bi;
+-
+-      if (dev->nErasedBlocks < 1) {
+-              /* Hoosterman we've got a problem.
+-               * Can't get space to gc
+-               */
+-              T(YAFFS_TRACE_ERROR,
+-                (TSTR("yaffs tragedy: no more erased blocks" TENDSTR)));
+-
+-              return -1;
+-      }
+-
+-      /* Find an empty block. */
+-
+-      for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
+-              dev->allocationBlockFinder++;
+-              if (dev->allocationBlockFinder < dev->internalStartBlock
+-                  || dev->allocationBlockFinder > dev->internalEndBlock) {
+-                      dev->allocationBlockFinder = dev->internalStartBlock;
+-              }
+-
+-              bi = yaffs_GetBlockInfo(dev, dev->allocationBlockFinder);
+-
+-              if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) {
+-                      bi->blockState = YAFFS_BLOCK_STATE_ALLOCATING;
+-                      dev->sequenceNumber++;
+-                      bi->sequenceNumber = dev->sequenceNumber;
+-                      dev->nErasedBlocks--;
+-                      T(YAFFS_TRACE_ALLOCATE,
+-                        (TSTR("Allocated block %d, seq  %d, %d left" TENDSTR),
+-                         dev->allocationBlockFinder, dev->sequenceNumber,
+-                         dev->nErasedBlocks));
+-                      return dev->allocationBlockFinder;
+-              }
+-      }
+-
+-      T(YAFFS_TRACE_ALWAYS,
+-        (TSTR
+-         ("yaffs tragedy: no more erased blocks, but there should have been %d"
+-          TENDSTR), dev->nErasedBlocks));
+-
+-      return -1;
+-}
+-
+-
+-
+-static int yaffs_CalcCheckpointBlocksRequired(yaffs_Device *dev)
+-{
+-      if (!dev->nCheckpointBlocksRequired &&
+-         dev->isYaffs2) {
+-              /* Not a valid value so recalculate */
+-              int nBytes = 0;
+-              int nBlocks;
+-              int devBlocks = (dev->endBlock - dev->startBlock + 1);
+-              int tnodeSize;
+-
+-              tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+-
+-              if (tnodeSize < sizeof(yaffs_Tnode))
+-                      tnodeSize = sizeof(yaffs_Tnode);
+-
+-              nBytes += sizeof(yaffs_CheckpointValidity);
+-              nBytes += sizeof(yaffs_CheckpointDevice);
+-              nBytes += devBlocks * sizeof(yaffs_BlockInfo);
+-              nBytes += devBlocks * dev->chunkBitmapStride;
+-              nBytes += (sizeof(yaffs_CheckpointObject) + sizeof(__u32)) * (dev->nObjectsCreated - dev->nFreeObjects);
+-              nBytes += (tnodeSize + sizeof(__u32)) * (dev->nTnodesCreated - dev->nFreeTnodes);
+-              nBytes += sizeof(yaffs_CheckpointValidity);
+-              nBytes += sizeof(__u32); /* checksum*/
+-
+-              /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */
+-
+-              nBlocks = (nBytes/(dev->nDataBytesPerChunk * dev->nChunksPerBlock)) + 3;
+-
+-              dev->nCheckpointBlocksRequired = nBlocks;
+-      }
+-
+-      return dev->nCheckpointBlocksRequired;
+-}
+-
+-/*
+- * Check if there's space to allocate...
+- * Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()?
+- */
+-static int yaffs_CheckSpaceForAllocation(yaffs_Device *dev)
+-{
+-      int reservedChunks;
+-      int reservedBlocks = dev->nReservedBlocks;
+-      int checkpointBlocks;
+-
+-      if (dev->isYaffs2) {
+-              checkpointBlocks =  yaffs_CalcCheckpointBlocksRequired(dev) -
+-                                  dev->blocksInCheckpoint;
+-              if (checkpointBlocks < 0)
+-                      checkpointBlocks = 0;
+-      } else {
+-              checkpointBlocks = 0;
+-      }
+-
+-      reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock);
+-
+-      return (dev->nFreeChunks > reservedChunks);
+-}
+-
+-static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve,
+-              yaffs_BlockInfo **blockUsedPtr)
+-{
+-      int retVal;
+-      yaffs_BlockInfo *bi;
+-
+-      if (dev->allocationBlock < 0) {
+-              /* Get next block to allocate off */
+-              dev->allocationBlock = yaffs_FindBlockForAllocation(dev);
+-              dev->allocationPage = 0;
+-      }
+-
+-      if (!useReserve && !yaffs_CheckSpaceForAllocation(dev)) {
+-              /* Not enough space to allocate unless we're allowed to use the reserve. */
+-              return -1;
+-      }
+-
+-      if (dev->nErasedBlocks < dev->nReservedBlocks
+-                      && dev->allocationPage == 0) {
+-              T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR)));
+-      }
+-
+-      /* Next page please.... */
+-      if (dev->allocationBlock >= 0) {
+-              bi = yaffs_GetBlockInfo(dev, dev->allocationBlock);
+-
+-              retVal = (dev->allocationBlock * dev->nChunksPerBlock) +
+-                      dev->allocationPage;
+-              bi->pagesInUse++;
+-              yaffs_SetChunkBit(dev, dev->allocationBlock,
+-                              dev->allocationPage);
+-
+-              dev->allocationPage++;
+-
+-              dev->nFreeChunks--;
+-
+-              /* If the block is full set the state to full */
+-              if (dev->allocationPage >= dev->nChunksPerBlock) {
+-                      bi->blockState = YAFFS_BLOCK_STATE_FULL;
+-                      dev->allocationBlock = -1;
+-              }
+-
+-              if (blockUsedPtr)
+-                      *blockUsedPtr = bi;
+-
+-              return retVal;
+-      }
+-
+-      T(YAFFS_TRACE_ERROR,
+-                      (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR)));
+-
+-      return -1;
+-}
+-
+-static int yaffs_GetErasedChunks(yaffs_Device *dev)
+-{
+-      int n;
+-
+-      n = dev->nErasedBlocks * dev->nChunksPerBlock;
+-
+-      if (dev->allocationBlock > 0)
+-              n += (dev->nChunksPerBlock - dev->allocationPage);
+-
+-      return n;
+-
+-}
+-
+-static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block,
+-              int wholeBlock)
+-{
+-      int oldChunk;
+-      int newChunk;
+-      int markNAND;
+-      int retVal = YAFFS_OK;
+-      int cleanups = 0;
+-      int i;
+-      int isCheckpointBlock;
+-      int matchingChunk;
+-      int maxCopies;
+-
+-      int chunksBefore = yaffs_GetErasedChunks(dev);
+-      int chunksAfter;
+-
+-      yaffs_ExtendedTags tags;
+-
+-      yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, block);
+-
+-      yaffs_Object *object;
+-
+-      isCheckpointBlock = (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT);
+-
+-      bi->blockState = YAFFS_BLOCK_STATE_COLLECTING;
+-
+-      T(YAFFS_TRACE_TRACING,
+-                      (TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR),
+-                       block,
+-                       bi->pagesInUse,
+-                       bi->hasShrinkHeader,
+-                       wholeBlock));
+-
+-      /*yaffs_VerifyFreeChunks(dev); */
+-
+-      bi->hasShrinkHeader = 0;        /* clear the flag so that the block can erase */
+-
+-      /* Take off the number of soft deleted entries because
+-       * they're going to get really deleted during GC.
+-       */
+-      dev->nFreeChunks -= bi->softDeletions;
+-
+-      dev->isDoingGC = 1;
+-
+-      if (isCheckpointBlock ||
+-                      !yaffs_StillSomeChunkBits(dev, block)) {
+-              T(YAFFS_TRACE_TRACING,
+-                              (TSTR
+-                               ("Collecting block %d that has no chunks in use" TENDSTR),
+-                               block));
+-              yaffs_BlockBecameDirty(dev, block);
+-      } else {
+-
+-              __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
+-
+-              yaffs_VerifyBlock(dev, bi, block);
+-
+-              maxCopies = (wholeBlock) ? dev->nChunksPerBlock : 10;
+-              oldChunk = block * dev->nChunksPerBlock + dev->gcChunk;
+-
+-              for (/* init already done */;
+-                   retVal == YAFFS_OK &&
+-                   dev->gcChunk < dev->nChunksPerBlock &&
+-                   (bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) &&
+-                   maxCopies > 0;
+-                   dev->gcChunk++, oldChunk++) {
+-                      if (yaffs_CheckChunkBit(dev, block, dev->gcChunk)) {
+-
+-                              /* This page is in use and might need to be copied off */
+-
+-                              maxCopies--;
+-
+-                              markNAND = 1;
+-
+-                              yaffs_InitialiseTags(&tags);
+-
+-                              yaffs_ReadChunkWithTagsFromNAND(dev, oldChunk,
+-                                                              buffer, &tags);
+-
+-                              object =
+-                                  yaffs_FindObjectByNumber(dev,
+-                                                           tags.objectId);
+-
+-                              T(YAFFS_TRACE_GC_DETAIL,
+-                                (TSTR
+-                                 ("Collecting chunk in block %d, %d %d %d " TENDSTR),
+-                                 dev->gcChunk, tags.objectId, tags.chunkId,
+-                                 tags.byteCount));
+-
+-                              if (object && !yaffs_SkipVerification(dev)) {
+-                                      if (tags.chunkId == 0)
+-                                              matchingChunk = object->hdrChunk;
+-                                      else if (object->softDeleted)
+-                                              matchingChunk = oldChunk; /* Defeat the test */
+-                                      else
+-                                              matchingChunk = yaffs_FindChunkInFile(object, tags.chunkId, NULL);
+-
+-                                      if (oldChunk != matchingChunk)
+-                                              T(YAFFS_TRACE_ERROR,
+-                                                (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR),
+-                                                oldChunk, matchingChunk, tags.objectId, tags.chunkId));
+-
+-                              }
+-
+-                              if (!object) {
+-                                      T(YAFFS_TRACE_ERROR,
+-                                        (TSTR
+-                                         ("page %d in gc has no object: %d %d %d "
+-                                          TENDSTR), oldChunk,
+-                                          tags.objectId, tags.chunkId, tags.byteCount));
+-                              }
+-
+-                              if (object &&
+-                                  object->deleted &&
+-                                  object->softDeleted &&
+-                                  tags.chunkId != 0) {
+-                                      /* Data chunk in a soft deleted file, throw it away
+-                                       * It's a soft deleted data chunk,
+-                                       * No need to copy this, just forget about it and
+-                                       * fix up the object.
+-                                       */
+-
+-                                      object->nDataChunks--;
+-
+-                                      if (object->nDataChunks <= 0) {
+-                                              /* remeber to clean up the object */
+-                                              dev->gcCleanupList[cleanups] =
+-                                                  tags.objectId;
+-                                              cleanups++;
+-                                      }
+-                                      markNAND = 0;
+-                              } else if (0) {
+-                                      /* Todo object && object->deleted && object->nDataChunks == 0 */
+-                                      /* Deleted object header with no data chunks.
+-                                       * Can be discarded and the file deleted.
+-                                       */
+-                                      object->hdrChunk = 0;
+-                                      yaffs_FreeTnode(object->myDev,
+-                                                      object->variant.
+-                                                      fileVariant.top);
+-                                      object->variant.fileVariant.top = NULL;
+-                                      yaffs_DoGenericObjectDeletion(object);
+-
+-                              } else if (object) {
+-                                      /* It's either a data chunk in a live file or
+-                                       * an ObjectHeader, so we're interested in it.
+-                                       * NB Need to keep the ObjectHeaders of deleted files
+-                                       * until the whole file has been deleted off
+-                                       */
+-                                      tags.serialNumber++;
+-
+-                                      dev->nGCCopies++;
+-
+-                                      if (tags.chunkId == 0) {
+-                                              /* It is an object Id,
+-                                               * We need to nuke the shrinkheader flags first
+-                                               * We no longer want the shrinkHeader flag since its work is done
+-                                               * and if it is left in place it will mess up scanning.
+-                                               */
+-
+-                                              yaffs_ObjectHeader *oh;
+-                                              oh = (yaffs_ObjectHeader *)buffer;
+-                                              oh->isShrink = 0;
+-                                              tags.extraIsShrinkHeader = 0;
+-
+-                                              yaffs_VerifyObjectHeader(object, oh, &tags, 1);
+-                                      }
+-
+-                                      newChunk =
+-                                          yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &tags, 1);
+-
+-                                      if (newChunk < 0) {
+-                                              retVal = YAFFS_FAIL;
+-                                      } else {
+-
+-                                              /* Ok, now fix up the Tnodes etc. */
+-
+-                                              if (tags.chunkId == 0) {
+-                                                      /* It's a header */
+-                                                      object->hdrChunk =  newChunk;
+-                                                      object->serial =   tags.serialNumber;
+-                                              } else {
+-                                                      /* It's a data chunk */
+-                                                      yaffs_PutChunkIntoFile
+-                                                          (object,
+-                                                           tags.chunkId,
+-                                                           newChunk, 0);
+-                                              }
+-                                      }
+-                              }
+-
+-                              if (retVal == YAFFS_OK)
+-                                      yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__);
+-
+-                      }
+-              }
+-
+-              yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
+-
+-
+-              /* Do any required cleanups */
+-              for (i = 0; i < cleanups; i++) {
+-                      /* Time to delete the file too */
+-                      object =
+-                          yaffs_FindObjectByNumber(dev,
+-                                                   dev->gcCleanupList[i]);
+-                      if (object) {
+-                              yaffs_FreeTnode(dev,
+-                                              object->variant.fileVariant.
+-                                              top);
+-                              object->variant.fileVariant.top = NULL;
+-                              T(YAFFS_TRACE_GC,
+-                                (TSTR
+-                                 ("yaffs: About to finally delete object %d"
+-                                  TENDSTR), object->objectId));
+-                              yaffs_DoGenericObjectDeletion(object);
+-                              object->myDev->nDeletedFiles--;
+-                      }
+-
+-              }
+-
+-      }
+-
+-      yaffs_VerifyCollectedBlock(dev, bi, block);
+-
+-      chunksAfter = yaffs_GetErasedChunks(dev);
+-      if (chunksBefore >= chunksAfter) {
+-              T(YAFFS_TRACE_GC,
+-                (TSTR
+-                 ("gc did not increase free chunks before %d after %d"
+-                  TENDSTR), chunksBefore, chunksAfter));
+-      }
+-
+-      /* If the gc completed then clear the current gcBlock so that we find another. */
+-      if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING) {
+-              dev->gcBlock = -1;
+-              dev->gcChunk = 0;
+-      }
+-
+-      dev->isDoingGC = 0;
+-
+-      return retVal;
+-}
+-
+-/* New garbage collector
+- * If we're very low on erased blocks then we do aggressive garbage collection
+- * otherwise we do "leasurely" garbage collection.
+- * Aggressive gc looks further (whole array) and will accept less dirty blocks.
+- * Passive gc only inspects smaller areas and will only accept more dirty blocks.
+- *
+- * The idea is to help clear out space in a more spread-out manner.
+- * Dunno if it really does anything useful.
+- */
+-static int yaffs_CheckGarbageCollection(yaffs_Device *dev)
+-{
+-      int block;
+-      int aggressive;
+-      int gcOk = YAFFS_OK;
+-      int maxTries = 0;
+-
+-      int checkpointBlockAdjust;
+-
+-      if (dev->isDoingGC) {
+-              /* Bail out so we don't get recursive gc */
+-              return YAFFS_OK;
+-      }
+-
+-      /* This loop should pass the first time.
+-       * We'll only see looping here if the erase of the collected block fails.
+-       */
+-
+-      do {
+-              maxTries++;
+-
+-              checkpointBlockAdjust = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
+-              if (checkpointBlockAdjust < 0)
+-                      checkpointBlockAdjust = 0;
+-
+-              if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust + 2)) {
+-                      /* We need a block soon...*/
+-                      aggressive = 1;
+-              } else {
+-                      /* We're in no hurry */
+-                      aggressive = 0;
+-              }
+-
+-              if (dev->gcBlock <= 0) {
+-                      dev->gcBlock = yaffs_FindBlockForGarbageCollection(dev, aggressive);
+-                      dev->gcChunk = 0;
+-              }
+-
+-              block = dev->gcBlock;
+-
+-              if (block > 0) {
+-                      dev->garbageCollections++;
+-                      if (!aggressive)
+-                              dev->passiveGarbageCollections++;
+-
+-                      T(YAFFS_TRACE_GC,
+-                        (TSTR
+-                         ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR),
+-                         dev->nErasedBlocks, aggressive));
+-
+-                      gcOk = yaffs_GarbageCollectBlock(dev, block, aggressive);
+-              }
+-
+-              if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) {
+-                      T(YAFFS_TRACE_GC,
+-                        (TSTR
+-                         ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d"
+-                          TENDSTR), dev->nErasedBlocks, maxTries, block));
+-              }
+-      } while ((dev->nErasedBlocks < dev->nReservedBlocks) &&
+-               (block > 0) &&
+-               (maxTries < 2));
+-
+-      return aggressive ? gcOk : YAFFS_OK;
+-}
+-
+-/*-------------------------  TAGS --------------------------------*/
+-
+-static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId,
+-                         int chunkInObject)
+-{
+-      return (tags->chunkId == chunkInObject &&
+-              tags->objectId == objectId && !tags->chunkDeleted) ? 1 : 0;
+-
+-}
+-
+-
+-/*-------------------- Data file manipulation -----------------*/
+-
+-static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode,
+-                               yaffs_ExtendedTags *tags)
+-{
+-      /*Get the Tnode, then get the level 0 offset chunk offset */
+-      yaffs_Tnode *tn;
+-      int theChunk = -1;
+-      yaffs_ExtendedTags localTags;
+-      int retVal = -1;
+-
+-      yaffs_Device *dev = in->myDev;
+-
+-      if (!tags) {
+-              /* Passed a NULL, so use our own tags space */
+-              tags = &localTags;
+-      }
+-
+-      tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode);
+-
+-      if (tn) {
+-              theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
+-
+-              retVal =
+-                  yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId,
+-                                         chunkInInode);
+-      }
+-      return retVal;
+-}
+-
+-static int yaffs_FindAndDeleteChunkInFile(yaffs_Object *in, int chunkInInode,
+-                                        yaffs_ExtendedTags *tags)
+-{
+-      /* Get the Tnode, then get the level 0 offset chunk offset */
+-      yaffs_Tnode *tn;
+-      int theChunk = -1;
+-      yaffs_ExtendedTags localTags;
+-
+-      yaffs_Device *dev = in->myDev;
+-      int retVal = -1;
+-
+-      if (!tags) {
+-              /* Passed a NULL, so use our own tags space */
+-              tags = &localTags;
+-      }
+-
+-      tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode);
+-
+-      if (tn) {
+-
+-              theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
+-
+-              retVal =
+-                  yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId,
+-                                         chunkInInode);
+-
+-              /* Delete the entry in the filestructure (if found) */
+-              if (retVal != -1)
+-                      yaffs_PutLevel0Tnode(dev, tn, chunkInInode, 0);
+-      }
+-
+-      return retVal;
+-}
+-
+-#ifdef YAFFS_PARANOID
+-
+-static int yaffs_CheckFileSanity(yaffs_Object *in)
+-{
+-      int chunk;
+-      int nChunks;
+-      int fSize;
+-      int failed = 0;
+-      int objId;
+-      yaffs_Tnode *tn;
+-      yaffs_Tags localTags;
+-      yaffs_Tags *tags = &localTags;
+-      int theChunk;
+-      int chunkDeleted;
+-
+-      if (in->variantType != YAFFS_OBJECT_TYPE_FILE)
+-              return YAFFS_FAIL;
+-
+-      objId = in->objectId;
+-      fSize = in->variant.fileVariant.fileSize;
+-      nChunks =
+-          (fSize + in->myDev->nDataBytesPerChunk - 1) / in->myDev->nDataBytesPerChunk;
+-
+-      for (chunk = 1; chunk <= nChunks; chunk++) {
+-              tn = yaffs_FindLevel0Tnode(in->myDev, &in->variant.fileVariant,
+-                                         chunk);
+-
+-              if (tn) {
+-
+-                      theChunk = yaffs_GetChunkGroupBase(dev, tn, chunk);
+-
+-                      if (yaffs_CheckChunkBits
+-                          (dev, theChunk / dev->nChunksPerBlock,
+-                           theChunk % dev->nChunksPerBlock)) {
+-
+-                              yaffs_ReadChunkTagsFromNAND(in->myDev, theChunk,
+-                                                          tags,
+-                                                          &chunkDeleted);
+-                              if (yaffs_TagsMatch
+-                                  (tags, in->objectId, chunk, chunkDeleted)) {
+-                                      /* found it; */
+-
+-                              }
+-                      } else {
+-
+-                              failed = 1;
+-                      }
+-
+-              } else {
+-                      /* T(("No level 0 found for %d\n", chunk)); */
+-              }
+-      }
+-
+-      return failed ? YAFFS_FAIL : YAFFS_OK;
+-}
+-
+-#endif
+-
+-static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
+-                                int chunkInNAND, int inScan)
+-{
+-      /* NB inScan is zero unless scanning.
+-       * For forward scanning, inScan is > 0;
+-       * for backward scanning inScan is < 0
+-       */
+-
+-      yaffs_Tnode *tn;
+-      yaffs_Device *dev = in->myDev;
+-      int existingChunk;
+-      yaffs_ExtendedTags existingTags;
+-      yaffs_ExtendedTags newTags;
+-      unsigned existingSerial, newSerial;
+-
+-      if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
+-              /* Just ignore an attempt at putting a chunk into a non-file during scanning
+-               * If it is not during Scanning then something went wrong!
+-               */
+-              if (!inScan) {
+-                      T(YAFFS_TRACE_ERROR,
+-                        (TSTR
+-                         ("yaffs tragedy:attempt to put data chunk into a non-file"
+-                          TENDSTR)));
+-                      YBUG();
+-              }
+-
+-              yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
+-              return YAFFS_OK;
+-      }
+-
+-      tn = yaffs_AddOrFindLevel0Tnode(dev,
+-                                      &in->variant.fileVariant,
+-                                      chunkInInode,
+-                                      NULL);
+-      if (!tn)
+-              return YAFFS_FAIL;
+-
+-      existingChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
+-
+-      if (inScan != 0) {
+-              /* If we're scanning then we need to test for duplicates
+-               * NB This does not need to be efficient since it should only ever
+-               * happen when the power fails during a write, then only one
+-               * chunk should ever be affected.
+-               *
+-               * Correction for YAFFS2: This could happen quite a lot and we need to think about efficiency! TODO
+-               * Update: For backward scanning we don't need to re-read tags so this is quite cheap.
+-               */
+-
+-              if (existingChunk > 0) {
+-                      /* NB Right now existing chunk will not be real chunkId if the device >= 32MB
+-                       *    thus we have to do a FindChunkInFile to get the real chunk id.
+-                       *
+-                       * We have a duplicate now we need to decide which one to use:
+-                       *
+-                       * Backwards scanning YAFFS2: The old one is what we use, dump the new one.
+-                       * Forward scanning YAFFS2: The new one is what we use, dump the old one.
+-                       * YAFFS1: Get both sets of tags and compare serial numbers.
+-                       */
+-
+-                      if (inScan > 0) {
+-                              /* Only do this for forward scanning */
+-                              yaffs_ReadChunkWithTagsFromNAND(dev,
+-                                                              chunkInNAND,
+-                                                              NULL, &newTags);
+-
+-                              /* Do a proper find */
+-                              existingChunk =
+-                                  yaffs_FindChunkInFile(in, chunkInInode,
+-                                                        &existingTags);
+-                      }
+-
+-                      if (existingChunk <= 0) {
+-                              /*Hoosterman - how did this happen? */
+-
+-                              T(YAFFS_TRACE_ERROR,
+-                                (TSTR
+-                                 ("yaffs tragedy: existing chunk < 0 in scan"
+-                                  TENDSTR)));
+-
+-                      }
+-
+-                      /* NB The deleted flags should be false, otherwise the chunks will
+-                       * not be loaded during a scan
+-                       */
+-
+-                      if (inScan > 0) {
+-                              newSerial = newTags.serialNumber;
+-                              existingSerial = existingTags.serialNumber;
+-                      }
+-
+-                      if ((inScan > 0) &&
+-                          (in->myDev->isYaffs2 ||
+-                           existingChunk <= 0 ||
+-                           ((existingSerial + 1) & 3) == newSerial)) {
+-                              /* Forward scanning.
+-                               * Use new
+-                               * Delete the old one and drop through to update the tnode
+-                               */
+-                              yaffs_DeleteChunk(dev, existingChunk, 1,
+-                                                __LINE__);
+-                      } else {
+-                              /* Backward scanning or we want to use the existing one
+-                               * Use existing.
+-                               * Delete the new one and return early so that the tnode isn't changed
+-                               */
+-                              yaffs_DeleteChunk(dev, chunkInNAND, 1,
+-                                                __LINE__);
+-                              return YAFFS_OK;
+-                      }
+-              }
+-
+-      }
+-
+-      if (existingChunk == 0)
+-              in->nDataChunks++;
+-
+-      yaffs_PutLevel0Tnode(dev, tn, chunkInInode, chunkInNAND);
+-
+-      return YAFFS_OK;
+-}
+-
+-static int yaffs_ReadChunkDataFromObject(yaffs_Object *in, int chunkInInode,
+-                                      __u8 *buffer)
+-{
+-      int chunkInNAND = yaffs_FindChunkInFile(in, chunkInInode, NULL);
+-
+-      if (chunkInNAND >= 0)
+-              return yaffs_ReadChunkWithTagsFromNAND(in->myDev, chunkInNAND,
+-                                              buffer, NULL);
+-      else {
+-              T(YAFFS_TRACE_NANDACCESS,
+-                (TSTR("Chunk %d not found zero instead" TENDSTR),
+-                 chunkInNAND));
+-              /* get sane (zero) data if you read a hole */
+-              memset(buffer, 0, in->myDev->nDataBytesPerChunk);
+-              return 0;
+-      }
+-
+-}
+-
+-void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn)
+-{
+-      int block;
+-      int page;
+-      yaffs_ExtendedTags tags;
+-      yaffs_BlockInfo *bi;
+-
+-      if (chunkId <= 0)
+-              return;
+-
+-      dev->nDeletions++;
+-      block = chunkId / dev->nChunksPerBlock;
+-      page = chunkId % dev->nChunksPerBlock;
+-
+-
+-      if (!yaffs_CheckChunkBit(dev, block, page))
+-              T(YAFFS_TRACE_VERIFY,
+-                      (TSTR("Deleting invalid chunk %d"TENDSTR),
+-                       chunkId));
+-
+-      bi = yaffs_GetBlockInfo(dev, block);
+-
+-      T(YAFFS_TRACE_DELETION,
+-        (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunkId));
+-
+-      if (markNAND &&
+-          bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && !dev->isYaffs2) {
+-
+-              yaffs_InitialiseTags(&tags);
+-
+-              tags.chunkDeleted = 1;
+-
+-              yaffs_WriteChunkWithTagsToNAND(dev, chunkId, NULL, &tags);
+-              yaffs_HandleUpdateChunk(dev, chunkId, &tags);
+-      } else {
+-              dev->nUnmarkedDeletions++;
+-      }
+-
+-      /* Pull out of the management area.
+-       * If the whole block became dirty, this will kick off an erasure.
+-       */
+-      if (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING ||
+-          bi->blockState == YAFFS_BLOCK_STATE_FULL ||
+-          bi->blockState == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
+-          bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) {
+-              dev->nFreeChunks++;
+-
+-              yaffs_ClearChunkBit(dev, block, page);
+-
+-              bi->pagesInUse--;
+-
+-              if (bi->pagesInUse == 0 &&
+-                  !bi->hasShrinkHeader &&
+-                  bi->blockState != YAFFS_BLOCK_STATE_ALLOCATING &&
+-                  bi->blockState != YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
+-                      yaffs_BlockBecameDirty(dev, block);
+-              }
+-
+-      }
+-
+-}
+-
+-static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode,
+-                                      const __u8 *buffer, int nBytes,
+-                                      int useReserve)
+-{
+-      /* Find old chunk Need to do this to get serial number
+-       * Write new one and patch into tree.
+-       * Invalidate old tags.
+-       */
+-
+-      int prevChunkId;
+-      yaffs_ExtendedTags prevTags;
+-
+-      int newChunkId;
+-      yaffs_ExtendedTags newTags;
+-
+-      yaffs_Device *dev = in->myDev;
+-
+-      yaffs_CheckGarbageCollection(dev);
+-
+-      /* Get the previous chunk at this location in the file if it exists */
+-      prevChunkId = yaffs_FindChunkInFile(in, chunkInInode, &prevTags);
+-
+-      /* Set up new tags */
+-      yaffs_InitialiseTags(&newTags);
+-
+-      newTags.chunkId = chunkInInode;
+-      newTags.objectId = in->objectId;
+-      newTags.serialNumber =
+-          (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1;
+-      newTags.byteCount = nBytes;
+-
+-      if (nBytes < 1 || nBytes > dev->totalBytesPerChunk) {
+-              T(YAFFS_TRACE_ERROR,
+-              (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), nBytes));
+-              YBUG();
+-      }
+-
+-      newChunkId =
+-          yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags,
+-                                            useReserve);
+-
+-      if (newChunkId >= 0) {
+-              yaffs_PutChunkIntoFile(in, chunkInInode, newChunkId, 0);
+-
+-              if (prevChunkId >= 0)
+-                      yaffs_DeleteChunk(dev, prevChunkId, 1, __LINE__);
+-
+-              yaffs_CheckFileSanity(in);
+-      }
+-      return newChunkId;
+-
+-}
+-
+-/* UpdateObjectHeader updates the header on NAND for an object.
+- * If name is not NULL, then that new name is used.
+- */
+-int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force,
+-                           int isShrink, int shadows)
+-{
+-
+-      yaffs_BlockInfo *bi;
+-
+-      yaffs_Device *dev = in->myDev;
+-
+-      int prevChunkId;
+-      int retVal = 0;
+-      int result = 0;
+-
+-      int newChunkId;
+-      yaffs_ExtendedTags newTags;
+-      yaffs_ExtendedTags oldTags;
+-
+-      __u8 *buffer = NULL;
+-      YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1];
+-
+-      yaffs_ObjectHeader *oh = NULL;
++      yaffs_obj_t *in;
++      YCHAR *str = NULL;
+ 
+-      yaffs_strcpy(oldName, _Y("silly old name"));
++      yaffs_dev_t *dev = parent->my_dev;
+ 
++      /* Check if the entry exists. If it does then fail the call since we don't want a dup.*/
++      if (yaffs_find_by_name(parent, name))
++              return NULL;
+ 
+-      if (!in->fake ||
+-              in == dev->rootDir || /* The rootDir should also be saved */
+-              force) {
++      if (type == YAFFS_OBJECT_TYPE_SYMLINK) {
++              str = yaffs_clone_str(aliasString);
++              if (!str)
++                      return NULL;
++      }
+ 
+-              yaffs_CheckGarbageCollection(dev);
+-              yaffs_CheckObjectDetailsLoaded(in);
++      in = yaffs_new_obj(dev, -1, type);
+ 
+-              buffer = yaffs_GetTempBuffer(in->myDev, __LINE__);
+-              oh = (yaffs_ObjectHeader *) buffer;
++      if (!in){
++              if(str)
++                      YFREE(str);
++              return NULL;
++      }
+ 
+-              prevChunkId = in->hdrChunk;
+ 
+-              if (prevChunkId > 0) {
+-                      result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId,
+-                                                      buffer, &oldTags);
+ 
+-                      yaffs_VerifyObjectHeader(in, oh, &oldTags, 0);
+ 
+-                      memcpy(oldName, oh->name, sizeof(oh->name));
+-              }
+ 
+-              memset(buffer, 0xFF, dev->nDataBytesPerChunk);
++      if (in) {
++              in->hdr_chunk = 0;
++              in->valid = 1;
++              in->variant_type = type;
+ 
+-              oh->type = in->variantType;
+-              oh->yst_mode = in->yst_mode;
+-              oh->shadowsObject = oh->inbandShadowsObject = shadows;
++              in->yst_mode = mode;
+ 
+ #ifdef CONFIG_YAFFS_WINCE
+-              oh->win_atime[0] = in->win_atime[0];
+-              oh->win_ctime[0] = in->win_ctime[0];
+-              oh->win_mtime[0] = in->win_mtime[0];
+-              oh->win_atime[1] = in->win_atime[1];
+-              oh->win_ctime[1] = in->win_ctime[1];
+-              oh->win_mtime[1] = in->win_mtime[1];
++              yfsd_win_file_time_now(in->win_atime);
++              in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0];
++              in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1];
++
+ #else
+-              oh->yst_uid = in->yst_uid;
+-              oh->yst_gid = in->yst_gid;
+-              oh->yst_atime = in->yst_atime;
+-              oh->yst_mtime = in->yst_mtime;
+-              oh->yst_ctime = in->yst_ctime;
+-              oh->yst_rdev = in->yst_rdev;
++              in->yst_atime = in->yst_mtime = in->yst_ctime = Y_CURRENT_TIME;
++
++              in->yst_rdev = rdev;
++              in->yst_uid = uid;
++              in->yst_gid = gid;
+ #endif
+-              if (in->parent)
+-                      oh->parentObjectId = in->parent->objectId;
+-              else
+-                      oh->parentObjectId = 0;
++              in->n_data_chunks = 0;
+ 
+-              if (name && *name) {
+-                      memset(oh->name, 0, sizeof(oh->name));
+-                      yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH);
+-              } else if (prevChunkId >= 0)
+-                      memcpy(oh->name, oldName, sizeof(oh->name));
+-              else
+-                      memset(oh->name, 0, sizeof(oh->name));
++              yaffs_set_obj_name(in, name);
++              in->dirty = 1;
+ 
+-              oh->isShrink = isShrink;
++              yaffs_add_obj_to_dir(parent, in);
+ 
+-              switch (in->variantType) {
+-              case YAFFS_OBJECT_TYPE_UNKNOWN:
+-                      /* Should not happen */
+-                      break;
+-              case YAFFS_OBJECT_TYPE_FILE:
+-                      oh->fileSize =
+-                          (oh->parentObjectId == YAFFS_OBJECTID_DELETED
+-                           || oh->parentObjectId ==
+-                           YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant.
+-                          fileVariant.fileSize;
++              in->my_dev = parent->my_dev;
++
++              switch (type) {
++              case YAFFS_OBJECT_TYPE_SYMLINK:
++                      in->variant.symlink_variant.alias = str;
+                       break;
+               case YAFFS_OBJECT_TYPE_HARDLINK:
+-                      oh->equivalentObjectId =
+-                          in->variant.hardLinkVariant.equivalentObjectId;
+-                      break;
+-              case YAFFS_OBJECT_TYPE_SPECIAL:
+-                      /* Do nothing */
++                      in->variant.hardlink_variant.equiv_obj =
++                              equiv_obj;
++                      in->variant.hardlink_variant.equiv_id =
++                              equiv_obj->obj_id;
++                      ylist_add(&in->hard_links, &equiv_obj->hard_links);
+                       break;
++              case YAFFS_OBJECT_TYPE_FILE:
+               case YAFFS_OBJECT_TYPE_DIRECTORY:
+-                      /* Do nothing */
+-                      break;
+-              case YAFFS_OBJECT_TYPE_SYMLINK:
+-                      yaffs_strncpy(oh->alias,
+-                                    in->variant.symLinkVariant.alias,
+-                                    YAFFS_MAX_ALIAS_LENGTH);
+-                      oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0;
++              case YAFFS_OBJECT_TYPE_SPECIAL:
++              case YAFFS_OBJECT_TYPE_UNKNOWN:
++                      /* do nothing */
+                       break;
+               }
+ 
+-              /* Tags */
+-              yaffs_InitialiseTags(&newTags);
+-              in->serial++;
+-              newTags.chunkId = 0;
+-              newTags.objectId = in->objectId;
+-              newTags.serialNumber = in->serial;
+-
+-              /* Add extra info for file header */
+-
+-              newTags.extraHeaderInfoAvailable = 1;
+-              newTags.extraParentObjectId = oh->parentObjectId;
+-              newTags.extraFileLength = oh->fileSize;
+-              newTags.extraIsShrinkHeader = oh->isShrink;
+-              newTags.extraEquivalentObjectId = oh->equivalentObjectId;
+-              newTags.extraShadows = (oh->shadowsObject > 0) ? 1 : 0;
+-              newTags.extraObjectType = in->variantType;
+-
+-              yaffs_VerifyObjectHeader(in, oh, &newTags, 1);
+-
+-              /* Create new chunk in NAND */
+-              newChunkId =
+-                  yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags,
+-                                                    (prevChunkId >= 0) ? 1 : 0);
+-
+-              if (newChunkId >= 0) {
+-
+-                      in->hdrChunk = newChunkId;
+-
+-                      if (prevChunkId >= 0) {
+-                              yaffs_DeleteChunk(dev, prevChunkId, 1,
+-                                                __LINE__);
+-                      }
+-
+-                      if (!yaffs_ObjectHasCachedWriteData(in))
+-                              in->dirty = 0;
+-
+-                      /* If this was a shrink, then mark the block that the chunk lives on */
+-                      if (isShrink) {
+-                              bi = yaffs_GetBlockInfo(in->myDev,
+-                                      newChunkId / in->myDev->nChunksPerBlock);
+-                              bi->hasShrinkHeader = 1;
+-                      }
+-
++              if (yaffs_update_oh(in, name, 0, 0, 0, NULL) < 0) {
++                      /* Could not create the object header, fail the creation */
++                      yaffs_del_obj(in);
++                      in = NULL;
+               }
+ 
+-              retVal = newChunkId;
+-
++              yaffs_update_parent(parent);
+       }
+ 
+-      if (buffer)
+-              yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
+-
+-      return retVal;
++      return in;
+ }
+ 
+-/*------------------------ Short Operations Cache ----------------------------------------
+- *   In many situations where there is no high level buffering (eg WinCE) a lot of
+- *   reads might be short sequential reads, and a lot of writes may be short
+- *   sequential writes. eg. scanning/writing a jpeg file.
+- *   In these cases, a short read/write cache can provide a huge perfomance benefit
+- *   with dumb-as-a-rock code.
+- *   In Linux, the page cache provides read buffering aand the short op cache provides write
+- *   buffering.
+- *
+- *   There are a limited number (~10) of cache chunks per device so that we don't
+- *   need a very intelligent search.
+- */
+-
+-static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj)
++yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name,
++                      __u32 mode, __u32 uid, __u32 gid)
+ {
+-      yaffs_Device *dev = obj->myDev;
+-      int i;
+-      yaffs_ChunkCache *cache;
+-      int nCaches = obj->myDev->nShortOpCaches;
+-
+-      for (i = 0; i < nCaches; i++) {
+-              cache = &dev->srCache[i];
+-              if (cache->object == obj &&
+-                  cache->dirty)
+-                      return 1;
+-      }
++      return yaffs_create_obj(YAFFS_OBJECT_TYPE_FILE, parent, name, mode,
++                              uid, gid, NULL, NULL, 0);
++}
+ 
+-      return 0;
++yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name,
++                              __u32 mode, __u32 uid, __u32 gid)
++{
++      return yaffs_create_obj(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name,
++                               mode, uid, gid, NULL, NULL, 0);
+ }
+ 
++yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name,
++                              __u32 mode, __u32 uid, __u32 gid, __u32 rdev)
++{
++      return yaffs_create_obj(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode,
++                               uid, gid, NULL, NULL, rdev);
++}
+ 
+-static void yaffs_FlushFilesChunkCache(yaffs_Object *obj)
++yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name,
++                              __u32 mode, __u32 uid, __u32 gid,
++                              const YCHAR *alias)
+ {
+-      yaffs_Device *dev = obj->myDev;
+-      int lowest = -99;       /* Stop compiler whining. */
+-      int i;
+-      yaffs_ChunkCache *cache;
+-      int chunkWritten = 0;
+-      int nCaches = obj->myDev->nShortOpCaches;
++      return yaffs_create_obj(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode,
++                              uid, gid, NULL, alias, 0);
++}
+ 
+-      if (nCaches > 0) {
+-              do {
+-                      cache = NULL;
++/* yaffs_link_obj returns the object id of the equivalent object.*/
++yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name,
++                      yaffs_obj_t *equiv_obj)
++{
++      /* Get the real object in case we were fed a hard link as an equivalent object */
++      equiv_obj = yaffs_get_equivalent_obj(equiv_obj);
+ 
+-                      /* Find the dirty cache for this object with the lowest chunk id. */
+-                      for (i = 0; i < nCaches; i++) {
+-                              if (dev->srCache[i].object == obj &&
+-                                  dev->srCache[i].dirty) {
+-                                      if (!cache
+-                                          || dev->srCache[i].chunkId <
+-                                          lowest) {
+-                                              cache = &dev->srCache[i];
+-                                              lowest = cache->chunkId;
+-                                      }
+-                              }
+-                      }
++      if (yaffs_create_obj
++          (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0,
++           equiv_obj, NULL, 0)) {
++              return equiv_obj;
++      } else {
++              return NULL;
++      }
+ 
+-                      if (cache && !cache->locked) {
+-                              /* Write it out and free it up */
++}
+ 
+-                              chunkWritten =
+-                                  yaffs_WriteChunkDataToObject(cache->object,
+-                                                               cache->chunkId,
+-                                                               cache->data,
+-                                                               cache->nBytes,
+-                                                               1);
+-                              cache->dirty = 0;
+-                              cache->object = NULL;
+-                      }
++static int yaffs_change_obj_name(yaffs_obj_t *obj, yaffs_obj_t *new_dir,
++                              const YCHAR *new_name, int force, int shadows)
++{
++      int unlinkOp;
++      int deleteOp;
+ 
+-              } while (cache && chunkWritten > 0);
++      yaffs_obj_t *existingTarget;
+ 
+-              if (cache) {
+-                      /* Hoosterman, disk full while writing cache out. */
+-                      T(YAFFS_TRACE_ERROR,
+-                        (TSTR("yaffs tragedy: no space during cache write" TENDSTR)));
++      if (new_dir == NULL)
++              new_dir = obj->parent;  /* use the old directory */
+ 
+-              }
++      if (new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
++              T(YAFFS_TRACE_ALWAYS,
++                (TSTR
++                 ("tragedy: yaffs_change_obj_name: new_dir is not a directory"
++                  TENDSTR)));
++              YBUG();
+       }
+ 
+-}
++      /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */
++      if (obj->my_dev->param.is_yaffs2)
++              unlinkOp = (new_dir == obj->my_dev->unlinked_dir);
++      else
++              unlinkOp = (new_dir == obj->my_dev->unlinked_dir
++                          && obj->variant_type == YAFFS_OBJECT_TYPE_FILE);
+ 
+-/*yaffs_FlushEntireDeviceCache(dev)
+- *
+- *
+- */
++      deleteOp = (new_dir == obj->my_dev->del_dir);
+ 
+-void yaffs_FlushEntireDeviceCache(yaffs_Device *dev)
+-{
+-      yaffs_Object *obj;
+-      int nCaches = dev->nShortOpCaches;
+-      int i;
++      existingTarget = yaffs_find_by_name(new_dir, new_name);
+ 
+-      /* Find a dirty object in the cache and flush it...
+-       * until there are no further dirty objects.
++      /* If the object is a file going into the unlinked directory,
++       *   then it is OK to just stuff it in since duplicate names are allowed.
++       *   else only proceed if the new name does not exist and if we're putting
++       *   it into a directory.
+        */
+-      do {
+-              obj = NULL;
+-              for (i = 0; i < nCaches && !obj; i++) {
+-                      if (dev->srCache[i].object &&
+-                          dev->srCache[i].dirty)
+-                              obj = dev->srCache[i].object;
+-
+-              }
+-              if (obj)
+-                      yaffs_FlushFilesChunkCache(obj);
+-
+-      } while (obj);
+-
+-}
++      if ((unlinkOp ||
++           deleteOp ||
++           force ||
++           (shadows > 0) ||
++           !existingTarget) &&
++          new_dir->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) {
++              yaffs_set_obj_name(obj, new_name);
++              obj->dirty = 1;
+ 
++              yaffs_add_obj_to_dir(new_dir, obj);
+ 
+-/* Grab us a cache chunk for use.
+- * First look for an empty one.
+- * Then look for the least recently used non-dirty one.
+- * Then look for the least recently used dirty one...., flush and look again.
+- */
+-static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device *dev)
+-{
+-      int i;
++              if (unlinkOp)
++                      obj->unlinked = 1;
+ 
+-      if (dev->nShortOpCaches > 0) {
+-              for (i = 0; i < dev->nShortOpCaches; i++) {
+-                      if (!dev->srCache[i].object)
+-                              return &dev->srCache[i];
+-              }
++              /* If it is a deletion then we mark it as a shrink for gc purposes. */
++              if (yaffs_update_oh(obj, new_name, 0, deleteOp, shadows, NULL) >= 0)
++                      return YAFFS_OK;
+       }
+ 
+-      return NULL;
++      return YAFFS_FAIL;
+ }
+ 
+-static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev)
++int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name,
++              yaffs_obj_t *new_dir, const YCHAR *new_name)
+ {
+-      yaffs_ChunkCache *cache;
+-      yaffs_Object *theObj;
+-      int usage;
+-      int i;
+-      int pushout;
+-
+-      if (dev->nShortOpCaches > 0) {
+-              /* Try find a non-dirty one... */
+-
+-              cache = yaffs_GrabChunkCacheWorker(dev);
++      yaffs_obj_t *obj = NULL;
++      yaffs_obj_t *existingTarget = NULL;
++      int force = 0;
++      int result;
++      yaffs_dev_t *dev;
+ 
+-              if (!cache) {
+-                      /* They were all dirty, find the last recently used object and flush
+-                       * its cache, then  find again.
+-                       * NB what's here is not very accurate, we actually flush the object
+-                       * the last recently used page.
+-                       */
+ 
+-                      /* With locking we can't assume we can use entry zero */
++      if (!old_dir || old_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
++              YBUG();
++      if (!new_dir || new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
++              YBUG();
+ 
+-                      theObj = NULL;
+-                      usage = -1;
+-                      cache = NULL;
+-                      pushout = -1;
++      dev = old_dir->my_dev;
+ 
+-                      for (i = 0; i < dev->nShortOpCaches; i++) {
+-                              if (dev->srCache[i].object &&
+-                                  !dev->srCache[i].locked &&
+-                                  (dev->srCache[i].lastUse < usage || !cache)) {
+-                                      usage = dev->srCache[i].lastUse;
+-                                      theObj = dev->srCache[i].object;
+-                                      cache = &dev->srCache[i];
+-                                      pushout = i;
+-                              }
+-                      }
++#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
++      /* Special case for case insemsitive systems (eg. WinCE).
++       * While look-up is case insensitive, the name isn't.
++       * Therefore we might want to change x.txt to X.txt
++      */
++      if (old_dir == new_dir && yaffs_strcmp(old_name, new_name) == 0)
++              force = 1;
++#endif
+ 
+-                      if (!cache || cache->dirty) {
+-                              /* Flush and try again */
+-                              yaffs_FlushFilesChunkCache(theObj);
+-                              cache = yaffs_GrabChunkCacheWorker(dev);
+-                      }
++      if(yaffs_strnlen(new_name,YAFFS_MAX_NAME_LENGTH+1) > YAFFS_MAX_NAME_LENGTH)
++              /* ENAMETOOLONG */
++              return YAFFS_FAIL;
+ 
+-              }
+-              return cache;
+-      } else
+-              return NULL;
++      obj = yaffs_find_by_name(old_dir, old_name);
+ 
+-}
++      if (obj && obj->rename_allowed) {
+ 
+-/* Find a cached chunk */
+-static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj,
+-                                            int chunkId)
+-{
+-      yaffs_Device *dev = obj->myDev;
+-      int i;
+-      if (dev->nShortOpCaches > 0) {
+-              for (i = 0; i < dev->nShortOpCaches; i++) {
+-                      if (dev->srCache[i].object == obj &&
+-                          dev->srCache[i].chunkId == chunkId) {
+-                              dev->cacheHits++;
++              /* Now do the handling for an existing target, if there is one */
+ 
+-                              return &dev->srCache[i];
+-                      }
++              existingTarget = yaffs_find_by_name(new_dir, new_name);
++              if (existingTarget &&
++                      existingTarget->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY &&
++                      !ylist_empty(&existingTarget->variant.dir_variant.children)) {
++                      /* There is a target that is a non-empty directory, so we fail */
++                      return YAFFS_FAIL;      /* EEXIST or ENOTEMPTY */
++              } else if (existingTarget && existingTarget != obj) {
++                      /* Nuke the target first, using shadowing,
++                       * but only if it isn't the same object.
++                       *
++                       * Note we must disable gc otherwise it can mess up the shadowing.
++                       *
++                       */
++                      dev->gc_disable=1;
++                      yaffs_change_obj_name(obj, new_dir, new_name, force,
++                                              existingTarget->obj_id);
++                      existingTarget->is_shadowed = 1;
++                      yaffs_unlink_obj(existingTarget);
++                      dev->gc_disable=0;
+               }
++
++              result = yaffs_change_obj_name(obj, new_dir, new_name, 1, 0);
++
++              yaffs_update_parent(old_dir);
++              if(new_dir != old_dir)
++                      yaffs_update_parent(new_dir);
++              
++              return result;
+       }
+-      return NULL;
++      return YAFFS_FAIL;
+ }
+ 
+-/* Mark the chunk for the least recently used algorithym */
+-static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache,
+-                              int isAWrite)
++/*------------------------- Block Management and Page Allocation ----------------*/
++
++static int yaffs_init_blocks(yaffs_dev_t *dev)
+ {
++      int nBlocks = dev->internal_end_block - dev->internal_start_block + 1;
+ 
+-      if (dev->nShortOpCaches > 0) {
+-              if (dev->srLastUse < 0 || dev->srLastUse > 100000000) {
+-                      /* Reset the cache usages */
+-                      int i;
+-                      for (i = 1; i < dev->nShortOpCaches; i++)
+-                              dev->srCache[i].lastUse = 0;
++      dev->block_info = NULL;
++      dev->chunk_bits = NULL;
+ 
+-                      dev->srLastUse = 0;
+-              }
++      dev->alloc_block = -1;  /* force it to get a new one */
+ 
+-              dev->srLastUse++;
++      /* If the first allocation strategy fails, thry the alternate one */
++      dev->block_info = YMALLOC(nBlocks * sizeof(yaffs_block_info_t));
++      if (!dev->block_info) {
++              dev->block_info = YMALLOC_ALT(nBlocks * sizeof(yaffs_block_info_t));
++              dev->block_info_alt = 1;
++      } else
++              dev->block_info_alt = 0;
+ 
+-              cache->lastUse = dev->srLastUse;
++      if (dev->block_info) {
++              /* Set up dynamic blockinfo stuff. */
++              dev->chunk_bit_stride = (dev->param.chunks_per_block + 7) / 8; /* round up bytes */
++              dev->chunk_bits = YMALLOC(dev->chunk_bit_stride * nBlocks);
++              if (!dev->chunk_bits) {
++                      dev->chunk_bits = YMALLOC_ALT(dev->chunk_bit_stride * nBlocks);
++                      dev->chunk_bits_alt = 1;
++              } else
++                      dev->chunk_bits_alt = 0;
++      }
+ 
+-              if (isAWrite)
+-                      cache->dirty = 1;
++      if (dev->block_info && dev->chunk_bits) {
++              memset(dev->block_info, 0, nBlocks * sizeof(yaffs_block_info_t));
++              memset(dev->chunk_bits, 0, dev->chunk_bit_stride * nBlocks);
++              return YAFFS_OK;
+       }
++
++      return YAFFS_FAIL;
+ }
+ 
+-/* Invalidate a single cache page.
+- * Do this when a whole page gets written,
+- * ie the short cache for this page is no longer valid.
+- */
+-static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId)
++static void yaffs_deinit_blocks(yaffs_dev_t *dev)
+ {
+-      if (object->myDev->nShortOpCaches > 0) {
+-              yaffs_ChunkCache *cache = yaffs_FindChunkCache(object, chunkId);
++      if (dev->block_info_alt && dev->block_info)
++              YFREE_ALT(dev->block_info);
++      else if (dev->block_info)
++              YFREE(dev->block_info);
+ 
+-              if (cache)
+-                      cache->object = NULL;
+-      }
+-}
++      dev->block_info_alt = 0;
+ 
+-/* Invalidate all the cache pages associated with this object
+- * Do this whenever ther file is deleted or resized.
+- */
+-static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in)
+-{
+-      int i;
+-      yaffs_Device *dev = in->myDev;
++      dev->block_info = NULL;
+ 
+-      if (dev->nShortOpCaches > 0) {
+-              /* Invalidate it. */
+-              for (i = 0; i < dev->nShortOpCaches; i++) {
+-                      if (dev->srCache[i].object == in)
+-                              dev->srCache[i].object = NULL;
+-              }
+-      }
++      if (dev->chunk_bits_alt && dev->chunk_bits)
++              YFREE_ALT(dev->chunk_bits);
++      else if (dev->chunk_bits)
++              YFREE(dev->chunk_bits);
++      dev->chunk_bits_alt = 0;
++      dev->chunk_bits = NULL;
+ }
+ 
+-/*--------------------- Checkpointing --------------------*/
++void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no)
++{
++      yaffs_block_info_t *bi = yaffs_get_block_info(dev, block_no);
+ 
++      int erasedOk = 0;
+ 
+-static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev, int head)
+-{
+-      yaffs_CheckpointValidity cp;
++      /* If the block is still healthy erase it and mark as clean.
++       * If the block has had a data failure, then retire it.
++       */
+ 
+-      memset(&cp, 0, sizeof(cp));
++      T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE,
++              (TSTR("yaffs_block_became_dirty block %d state %d %s"TENDSTR),
++              block_no, bi->block_state, (bi->needs_retiring) ? "needs retiring" : ""));
+ 
+-      cp.structType = sizeof(cp);
+-      cp.magic = YAFFS_MAGIC;
+-      cp.version = YAFFS_CHECKPOINT_VERSION;
+-      cp.head = (head) ? 1 : 0;
++      yaffs2_clear_oldest_dirty_seq(dev,bi);
+ 
+-      return (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)) ?
+-              1 : 0;
+-}
++      bi->block_state = YAFFS_BLOCK_STATE_DIRTY;
+ 
+-static int yaffs_ReadCheckpointValidityMarker(yaffs_Device *dev, int head)
+-{
+-      yaffs_CheckpointValidity cp;
+-      int ok;
++      /* If this is the block being garbage collected then stop gc'ing this block */
++      if(block_no == dev->gc_block)
++              dev->gc_block = 0;
+ 
+-      ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
++      /* If this block is currently the best candidate for gc then drop as a candidate */
++      if(block_no == dev->gc_dirtiest){
++              dev->gc_dirtiest = 0;
++              dev->gc_pages_in_use = 0;
++      }
+ 
+-      if (ok)
+-              ok = (cp.structType == sizeof(cp)) &&
+-                   (cp.magic == YAFFS_MAGIC) &&
+-                   (cp.version == YAFFS_CHECKPOINT_VERSION) &&
+-                   (cp.head == ((head) ? 1 : 0));
+-      return ok ? 1 : 0;
+-}
++      if (!bi->needs_retiring) {
++              yaffs2_checkpt_invalidate(dev);
++              erasedOk = yaffs_erase_block(dev, block_no);
++              if (!erasedOk) {
++                      dev->n_erase_failures++;
++                      T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
++                        (TSTR("**>> Erasure failed %d" TENDSTR), block_no));
++              }
++      }
+ 
+-static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp,
+-                                         yaffs_Device *dev)
+-{
+-      cp->nErasedBlocks = dev->nErasedBlocks;
+-      cp->allocationBlock = dev->allocationBlock;
+-      cp->allocationPage = dev->allocationPage;
+-      cp->nFreeChunks = dev->nFreeChunks;
++      if (erasedOk &&
++          ((yaffs_trace_mask & YAFFS_TRACE_ERASE) || !yaffs_skip_verification(dev))) {
++              int i;
++              for (i = 0; i < dev->param.chunks_per_block; i++) {
++                      if (!yaffs_check_chunk_erased
++                          (dev, block_no * dev->param.chunks_per_block + i)) {
++                              T(YAFFS_TRACE_ERROR,
++                                (TSTR
++                                 (">>Block %d erasure supposedly OK, but chunk %d not erased"
++                                  TENDSTR), block_no, i));
++                      }
++              }
++      }
++
++      if (erasedOk) {
++              /* Clean it up... */
++              bi->block_state = YAFFS_BLOCK_STATE_EMPTY;
++              bi->seq_number = 0;
++              dev->n_erased_blocks++;
++              bi->pages_in_use = 0;
++              bi->soft_del_pages = 0;
++              bi->has_shrink_hdr = 0;
++              bi->skip_erased_check = 1;  /* This is clean, so no need to check */
++              bi->gc_prioritise = 0;
++              yaffs_clear_chunk_bits(dev, block_no);
+ 
+-      cp->nDeletedFiles = dev->nDeletedFiles;
+-      cp->nUnlinkedFiles = dev->nUnlinkedFiles;
+-      cp->nBackgroundDeletions = dev->nBackgroundDeletions;
+-      cp->sequenceNumber = dev->sequenceNumber;
+-      cp->oldestDirtySequence = dev->oldestDirtySequence;
++              T(YAFFS_TRACE_ERASE,
++                (TSTR("Erased block %d" TENDSTR), block_no));
++      } else {
++              dev->n_free_chunks -= dev->param.chunks_per_block;      /* We lost a block of free space */
+ 
++              yaffs_retire_block(dev, block_no);
++              T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
++                (TSTR("**>> Block %d retired" TENDSTR), block_no));
++      }
+ }
+ 
+-static void yaffs_CheckpointDeviceToDevice(yaffs_Device *dev,
+-                                         yaffs_CheckpointDevice *cp)
++static int yaffs_find_alloc_block(yaffs_dev_t *dev)
+ {
+-      dev->nErasedBlocks = cp->nErasedBlocks;
+-      dev->allocationBlock = cp->allocationBlock;
+-      dev->allocationPage = cp->allocationPage;
+-      dev->nFreeChunks = cp->nFreeChunks;
+-
+-      dev->nDeletedFiles = cp->nDeletedFiles;
+-      dev->nUnlinkedFiles = cp->nUnlinkedFiles;
+-      dev->nBackgroundDeletions = cp->nBackgroundDeletions;
+-      dev->sequenceNumber = cp->sequenceNumber;
+-      dev->oldestDirtySequence = cp->oldestDirtySequence;
+-}
++      int i;
+ 
++      yaffs_block_info_t *bi;
+ 
+-static int yaffs_WriteCheckpointDevice(yaffs_Device *dev)
+-{
+-      yaffs_CheckpointDevice cp;
+-      __u32 nBytes;
+-      __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
++      if (dev->n_erased_blocks < 1) {
++              /* Hoosterman we've got a problem.
++               * Can't get space to gc
++               */
++              T(YAFFS_TRACE_ERROR,
++                (TSTR("yaffs tragedy: no more erased blocks" TENDSTR)));
+ 
+-      int ok;
++              return -1;
++      }
+ 
+-      /* Write device runtime values*/
+-      yaffs_DeviceToCheckpointDevice(&cp, dev);
+-      cp.structType = sizeof(cp);
++      /* Find an empty block. */
+ 
+-      ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
++      for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
++              dev->alloc_block_finder++;
++              if (dev->alloc_block_finder < dev->internal_start_block
++                  || dev->alloc_block_finder > dev->internal_end_block) {
++                      dev->alloc_block_finder = dev->internal_start_block;
++              }
+ 
+-      /* Write block info */
+-      if (ok) {
+-              nBytes = nBlocks * sizeof(yaffs_BlockInfo);
+-              ok = (yaffs_CheckpointWrite(dev, dev->blockInfo, nBytes) == nBytes);
++              bi = yaffs_get_block_info(dev, dev->alloc_block_finder);
++
++              if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) {
++                      bi->block_state = YAFFS_BLOCK_STATE_ALLOCATING;
++                      dev->seq_number++;
++                      bi->seq_number = dev->seq_number;
++                      dev->n_erased_blocks--;
++                      T(YAFFS_TRACE_ALLOCATE,
++                        (TSTR("Allocated block %d, seq  %d, %d left" TENDSTR),
++                         dev->alloc_block_finder, dev->seq_number,
++                         dev->n_erased_blocks));
++                      return dev->alloc_block_finder;
++              }
+       }
+ 
+-      /* Write chunk bits */
+-      if (ok) {
+-              nBytes = nBlocks * dev->chunkBitmapStride;
+-              ok = (yaffs_CheckpointWrite(dev, dev->chunkBits, nBytes) == nBytes);
+-      }
+-      return   ok ? 1 : 0;
++      T(YAFFS_TRACE_ALWAYS,
++        (TSTR
++         ("yaffs tragedy: no more erased blocks, but there should have been %d"
++          TENDSTR), dev->n_erased_blocks));
+ 
++      return -1;
+ }
+ 
+-static int yaffs_ReadCheckpointDevice(yaffs_Device *dev)
++
++/*
++ * Check if there's space to allocate...
++ * Thinks.... do we need top make this ths same as yaffs_get_free_chunks()?
++ */
++int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks)
+ {
+-      yaffs_CheckpointDevice cp;
+-      __u32 nBytes;
+-      __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
++      int reservedChunks;
++      int reservedBlocks = dev->param.n_reserved_blocks;
++      int checkpointBlocks;
+ 
+-      int ok;
++      checkpointBlocks = yaffs_calc_checkpt_blocks_required(dev);
+ 
+-      ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
+-      if (!ok)
+-              return 0;
++      reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->param.chunks_per_block);
+ 
+-      if (cp.structType != sizeof(cp))
+-              return 0;
++      return (dev->n_free_chunks > (reservedChunks + n_chunks));
++}
++
++static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve,
++              yaffs_block_info_t **blockUsedPtr)
++{
++      int retVal;
++      yaffs_block_info_t *bi;
++
++      if (dev->alloc_block < 0) {
++              /* Get next block to allocate off */
++              dev->alloc_block = yaffs_find_alloc_block(dev);
++              dev->alloc_page = 0;
++      }
+ 
++      if (!useReserve && !yaffs_check_alloc_available(dev, 1)) {
++              /* Not enough space to allocate unless we're allowed to use the reserve. */
++              return -1;
++      }
+ 
+-      yaffs_CheckpointDeviceToDevice(dev, &cp);
++      if (dev->n_erased_blocks < dev->param.n_reserved_blocks
++                      && dev->alloc_page == 0) {
++              T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR)));
++      }
+ 
+-      nBytes = nBlocks * sizeof(yaffs_BlockInfo);
++      /* Next page please.... */
++      if (dev->alloc_block >= 0) {
++              bi = yaffs_get_block_info(dev, dev->alloc_block);
+ 
+-      ok = (yaffs_CheckpointRead(dev, dev->blockInfo, nBytes) == nBytes);
++              retVal = (dev->alloc_block * dev->param.chunks_per_block) +
++                      dev->alloc_page;
++              bi->pages_in_use++;
++              yaffs_set_chunk_bit(dev, dev->alloc_block,
++                              dev->alloc_page);
+ 
+-      if (!ok)
+-              return 0;
+-      nBytes = nBlocks * dev->chunkBitmapStride;
++              dev->alloc_page++;
+ 
+-      ok = (yaffs_CheckpointRead(dev, dev->chunkBits, nBytes) == nBytes);
++              dev->n_free_chunks--;
+ 
+-      return ok ? 1 : 0;
+-}
++              /* If the block is full set the state to full */
++              if (dev->alloc_page >= dev->param.chunks_per_block) {
++                      bi->block_state = YAFFS_BLOCK_STATE_FULL;
++                      dev->alloc_block = -1;
++              }
+ 
+-static void yaffs_ObjectToCheckpointObject(yaffs_CheckpointObject *cp,
+-                                         yaffs_Object *obj)
+-{
++              if (blockUsedPtr)
++                      *blockUsedPtr = bi;
++
++              return retVal;
++      }
+ 
+-      cp->objectId = obj->objectId;
+-      cp->parentId = (obj->parent) ? obj->parent->objectId : 0;
+-      cp->hdrChunk = obj->hdrChunk;
+-      cp->variantType = obj->variantType;
+-      cp->deleted = obj->deleted;
+-      cp->softDeleted = obj->softDeleted;
+-      cp->unlinked = obj->unlinked;
+-      cp->fake = obj->fake;
+-      cp->renameAllowed = obj->renameAllowed;
+-      cp->unlinkAllowed = obj->unlinkAllowed;
+-      cp->serial = obj->serial;
+-      cp->nDataChunks = obj->nDataChunks;
++      T(YAFFS_TRACE_ERROR,
++                      (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR)));
+ 
+-      if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+-              cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize;
+-      else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
+-              cp->fileSizeOrEquivalentObjectId = obj->variant.hardLinkVariant.equivalentObjectId;
++      return -1;
+ }
+ 
+-static int yaffs_CheckpointObjectToObject(yaffs_Object *obj, yaffs_CheckpointObject *cp)
++static int yaffs_get_erased_chunks(yaffs_dev_t *dev)
+ {
++      int n;
+ 
+-      yaffs_Object *parent;
++      n = dev->n_erased_blocks * dev->param.chunks_per_block;
+ 
+-      if (obj->variantType != cp->variantType) {
+-              T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d "
+-                      TCONT("chunk %d does not match existing object type %d")
+-                      TENDSTR), cp->objectId, cp->variantType, cp->hdrChunk,
+-                      obj->variantType));
+-              return 0;
+-      }
++      if (dev->alloc_block > 0)
++              n += (dev->param.chunks_per_block - dev->alloc_page);
+ 
+-      obj->objectId = cp->objectId;
++      return n;
+ 
+-      if (cp->parentId)
+-              parent = yaffs_FindOrCreateObjectByNumber(
+-                                      obj->myDev,
+-                                      cp->parentId,
+-                                      YAFFS_OBJECT_TYPE_DIRECTORY);
+-      else
+-              parent = NULL;
++}
+ 
+-      if (parent) {
+-              if (parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+-                      T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d"
+-                              TCONT(" chunk %d Parent type, %d, not directory")
+-                              TENDSTR),
+-                              cp->objectId, cp->parentId, cp->variantType,
+-                              cp->hdrChunk, parent->variantType));
+-                      return 0;
++/*
++ * yaffs_skip_rest_of_block() skips over the rest of the allocation block
++ * if we don't want to write to it.
++ */
++void yaffs_skip_rest_of_block(yaffs_dev_t *dev)
++{
++      if(dev->alloc_block > 0){
++              yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->alloc_block);
++              if(bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING){
++                      bi->block_state = YAFFS_BLOCK_STATE_FULL;
++                      dev->alloc_block = -1;
+               }
+-              yaffs_AddObjectToDirectory(parent, obj);
+       }
+-
+-      obj->hdrChunk = cp->hdrChunk;
+-      obj->variantType = cp->variantType;
+-      obj->deleted = cp->deleted;
+-      obj->softDeleted = cp->softDeleted;
+-      obj->unlinked = cp->unlinked;
+-      obj->fake = cp->fake;
+-      obj->renameAllowed = cp->renameAllowed;
+-      obj->unlinkAllowed = cp->unlinkAllowed;
+-      obj->serial = cp->serial;
+-      obj->nDataChunks = cp->nDataChunks;
+-
+-      if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+-              obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId;
+-      else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
+-              obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId;
+-
+-      if (obj->hdrChunk > 0)
+-              obj->lazyLoaded = 1;
+-      return 1;
+ }
+ 
+ 
+-
+-static int yaffs_CheckpointTnodeWorker(yaffs_Object *in, yaffs_Tnode *tn,
+-                                      __u32 level, int chunkOffset)
++static int yaffs_gc_block(yaffs_dev_t *dev, int block,
++              int wholeBlock)
+ {
++      int oldChunk;
++      int newChunk;
++      int mark_flash;
++      int retVal = YAFFS_OK;
+       int i;
+-      yaffs_Device *dev = in->myDev;
+-      int ok = 1;
+-      int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+-
+-      if (tnodeSize < sizeof(yaffs_Tnode))
+-              tnodeSize = sizeof(yaffs_Tnode);
++      int isCheckpointBlock;
++      int matchingChunk;
++      int maxCopies;
+ 
++      int chunksBefore = yaffs_get_erased_chunks(dev);
++      int chunksAfter;
+ 
+-      if (tn) {
+-              if (level > 0) {
++      yaffs_ext_tags tags;
+ 
+-                      for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
+-                              if (tn->internal[i]) {
+-                                      ok = yaffs_CheckpointTnodeWorker(in,
+-                                                      tn->internal[i],
+-                                                      level - 1,
+-                                                      (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i);
+-                              }
+-                      }
+-              } else if (level == 0) {
+-                      __u32 baseOffset = chunkOffset <<  YAFFS_TNODES_LEVEL0_BITS;
+-                      ok = (yaffs_CheckpointWrite(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset));
+-                      if (ok)
+-                              ok = (yaffs_CheckpointWrite(dev, tn, tnodeSize) == tnodeSize);
+-              }
+-      }
++      yaffs_block_info_t *bi = yaffs_get_block_info(dev, block);
+ 
+-      return ok;
++      yaffs_obj_t *object;
+ 
+-}
++      isCheckpointBlock = (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT);
+ 
+-static int yaffs_WriteCheckpointTnodes(yaffs_Object *obj)
+-{
+-      __u32 endMarker = ~0;
+-      int ok = 1;
+ 
+-      if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
+-              ok = yaffs_CheckpointTnodeWorker(obj,
+-                                          obj->variant.fileVariant.top,
+-                                          obj->variant.fileVariant.topLevel,
+-                                          0);
+-              if (ok)
+-                      ok = (yaffs_CheckpointWrite(obj->myDev, &endMarker, sizeof(endMarker)) ==
+-                              sizeof(endMarker));
+-      }
++      T(YAFFS_TRACE_TRACING,
++                      (TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR),
++                       block,
++                       bi->pages_in_use,
++                       bi->has_shrink_hdr,
++                       wholeBlock));
+ 
+-      return ok ? 1 : 0;
+-}
++      /*yaffs_verify_free_chunks(dev); */
+ 
+-static int yaffs_ReadCheckpointTnodes(yaffs_Object *obj)
+-{
+-      __u32 baseChunk;
+-      int ok = 1;
+-      yaffs_Device *dev = obj->myDev;
+-      yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant;
+-      yaffs_Tnode *tn;
+-      int nread = 0;
+-      int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
++      if(bi->block_state == YAFFS_BLOCK_STATE_FULL)
++              bi->block_state = YAFFS_BLOCK_STATE_COLLECTING;
++      
++      bi->has_shrink_hdr = 0; /* clear the flag so that the block can erase */
+ 
+-      if (tnodeSize < sizeof(yaffs_Tnode))
+-              tnodeSize = sizeof(yaffs_Tnode);
++      dev->gc_disable = 1;
+ 
+-      ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
++      if (isCheckpointBlock ||
++                      !yaffs_still_some_chunks(dev, block)) {
++              T(YAFFS_TRACE_TRACING,
++                              (TSTR
++                               ("Collecting block %d that has no chunks in use" TENDSTR),
++                               block));
++              yaffs_block_became_dirty(dev, block);
++      } else {
+ 
+-      while (ok && (~baseChunk)) {
+-              nread++;
+-              /* Read level 0 tnode */
++              __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__);
+ 
++              yaffs_verify_blk(dev, bi, block);
+ 
+-              tn = yaffs_GetTnodeRaw(dev);
+-              if (tn)
+-                      ok = (yaffs_CheckpointRead(dev, tn, tnodeSize) == tnodeSize);
+-              else
+-                      ok = 0;
++              maxCopies = (wholeBlock) ? dev->param.chunks_per_block : 5;
++              oldChunk = block * dev->param.chunks_per_block + dev->gc_chunk;
+ 
+-              if (tn && ok)
+-                      ok = yaffs_AddOrFindLevel0Tnode(dev,
+-                                                      fileStructPtr,
+-                                                      baseChunk,
+-                                                      tn) ? 1 : 0;
++              for (/* init already done */;
++                   retVal == YAFFS_OK &&
++                   dev->gc_chunk < dev->param.chunks_per_block &&
++                   (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) &&
++                   maxCopies > 0;
++                   dev->gc_chunk++, oldChunk++) {
++                      if (yaffs_check_chunk_bit(dev, block, dev->gc_chunk)) {
+ 
+-              if (ok)
+-                      ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
++                              /* This page is in use and might need to be copied off */
+ 
+-      }
++                              maxCopies--;
+ 
+-      T(YAFFS_TRACE_CHECKPOINT, (
+-              TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR),
+-              nread, baseChunk, ok));
++                              mark_flash = 1;
+ 
+-      return ok ? 1 : 0;
+-}
++                              yaffs_init_tags(&tags);
+ 
++                              yaffs_rd_chunk_tags_nand(dev, oldChunk,
++                                                              buffer, &tags);
+ 
+-static int yaffs_WriteCheckpointObjects(yaffs_Device *dev)
+-{
+-      yaffs_Object *obj;
+-      yaffs_CheckpointObject cp;
+-      int i;
+-      int ok = 1;
+-      struct ylist_head *lh;
++                              object =
++                                  yaffs_find_by_number(dev,
++                                                           tags.obj_id);
+ 
++                              T(YAFFS_TRACE_GC_DETAIL,
++                                (TSTR
++                                 ("Collecting chunk in block %d, %d %d %d " TENDSTR),
++                                 dev->gc_chunk, tags.obj_id, tags.chunk_id,
++                                 tags.n_bytes));
+ 
+-      /* Iterate through the objects in each hash entry,
+-       * dumping them to the checkpointing stream.
+-       */
++                              if (object && !yaffs_skip_verification(dev)) {
++                                      if (tags.chunk_id == 0)
++                                              matchingChunk = object->hdr_chunk;
++                                      else if (object->soft_del)
++                                              matchingChunk = oldChunk; /* Defeat the test */
++                                      else
++                                              matchingChunk = yaffs_find_chunk_in_file(object, tags.chunk_id, NULL);
+ 
+-      for (i = 0; ok &&  i <  YAFFS_NOBJECT_BUCKETS; i++) {
+-              ylist_for_each(lh, &dev->objectBucket[i].list) {
+-                      if (lh) {
+-                              obj = ylist_entry(lh, yaffs_Object, hashLink);
+-                              if (!obj->deferedFree) {
+-                                      yaffs_ObjectToCheckpointObject(&cp, obj);
+-                                      cp.structType = sizeof(cp);
+-
+-                                      T(YAFFS_TRACE_CHECKPOINT, (
+-                                              TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %x" TENDSTR),
+-                                              cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk, (unsigned) obj));
++                                      if (oldChunk != matchingChunk)
++                                              T(YAFFS_TRACE_ERROR,
++                                                (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR),
++                                                oldChunk, matchingChunk, tags.obj_id, tags.chunk_id));
+ 
+-                                      ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
++                              }
+ 
+-                                      if (ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+-                                              ok = yaffs_WriteCheckpointTnodes(obj);
++                              if (!object) {
++                                      T(YAFFS_TRACE_ERROR,
++                                        (TSTR
++                                         ("page %d in gc has no object: %d %d %d "
++                                          TENDSTR), oldChunk,
++                                          tags.obj_id, tags.chunk_id, tags.n_bytes));
+                               }
+-                      }
+-              }
+-      }
+ 
+-      /* Dump end of list */
+-      memset(&cp, 0xFF, sizeof(yaffs_CheckpointObject));
+-      cp.structType = sizeof(cp);
++                              if (object &&
++                                  object->deleted &&
++                                  object->soft_del &&
++                                  tags.chunk_id != 0) {
++                                      /* Data chunk in a soft deleted file, throw it away
++                                       * It's a soft deleted data chunk,
++                                       * No need to copy this, just forget about it and
++                                       * fix up the object.
++                                       */
++                                       
++                                      /* Free chunks already includes softdeleted chunks.
++                                       * How ever this chunk is going to soon be really deleted
++                                       * which will increment free chunks.
++                                       * We have to decrement free chunks so this works out properly.
++                                       */
++                                      dev->n_free_chunks--;
++                                      bi->soft_del_pages--;
++
++                                      object->n_data_chunks--;
+ 
+-      if (ok)
+-              ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
++                                      if (object->n_data_chunks <= 0) {
++                                              /* remeber to clean up the object */
++                                              dev->gc_cleanup_list[dev->n_clean_ups] =
++                                                  tags.obj_id;
++                                              dev->n_clean_ups++;
++                                      }
++                                      mark_flash = 0;
++                              } else if (0) {
++                                      /* Todo object && object->deleted && object->n_data_chunks == 0 */
++                                      /* Deleted object header with no data chunks.
++                                       * Can be discarded and the file deleted.
++                                       */
++                                      object->hdr_chunk = 0;
++                                      yaffs_free_tnode(object->my_dev,
++                                                      object->variant.
++                                                      file_variant.top);
++                                      object->variant.file_variant.top = NULL;
++                                      yaffs_generic_obj_del(object);
+ 
+-      return ok ? 1 : 0;
+-}
++                              } else if (object) {
++                                      /* It's either a data chunk in a live file or
++                                       * an ObjectHeader, so we're interested in it.
++                                       * NB Need to keep the ObjectHeaders of deleted files
++                                       * until the whole file has been deleted off
++                                       */
++                                      tags.serial_number++;
+ 
+-static int yaffs_ReadCheckpointObjects(yaffs_Device *dev)
+-{
+-      yaffs_Object *obj;
+-      yaffs_CheckpointObject cp;
+-      int ok = 1;
+-      int done = 0;
+-      yaffs_Object *hardList = NULL;
++                                      dev->n_gc_copies++;
+ 
+-      while (ok && !done) {
+-              ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
+-              if (cp.structType != sizeof(cp)) {
+-                      T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR),
+-                              cp.structType, sizeof(cp), ok));
+-                      ok = 0;
+-              }
+-
+-              T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR),
+-                      cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk));
+-
+-              if (ok && cp.objectId == ~0)
+-                      done = 1;
+-              else if (ok) {
+-                      obj = yaffs_FindOrCreateObjectByNumber(dev, cp.objectId, cp.variantType);
+-                      if (obj) {
+-                              ok = yaffs_CheckpointObjectToObject(obj, &cp);
+-                              if (!ok)
+-                                      break;
+-                              if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
+-                                      ok = yaffs_ReadCheckpointTnodes(obj);
+-                              } else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
+-                                      obj->hardLinks.next =
+-                                              (struct ylist_head *) hardList;
+-                                      hardList = obj;
+-                              }
+-                      } else
+-                              ok = 0;
+-              }
+-      }
++                                      if (tags.chunk_id == 0) {
++                                              /* It is an object Id,
++                                               * We need to nuke the shrinkheader flags first
++                                               * Also need to clean up shadowing.
++                                               * We no longer want the shrinkHeader flag since its work is done
++                                               * and if it is left in place it will mess up scanning.
++                                               */
+ 
+-      if (ok)
+-              yaffs_HardlinkFixup(dev, hardList);
++                                              yaffs_obj_header *oh;
++                                              oh = (yaffs_obj_header *)buffer;
+ 
+-      return ok ? 1 : 0;
+-}
++                                              oh->is_shrink = 0;
++                                              tags.extra_is_shrink = 0;
+ 
+-static int yaffs_WriteCheckpointSum(yaffs_Device *dev)
+-{
+-      __u32 checkpointSum;
+-      int ok;
++                                              oh->shadows_obj = 0;
++                                              oh->inband_shadowed_obj_id = 0;
++                                              tags.extra_shadows = 0;
++
++                                              /* Update file size */
++                                              if(object->variant_type == YAFFS_OBJECT_TYPE_FILE){
++                                                      oh->file_size = object->variant.file_variant.file_size;
++                                                      tags.extra_length = oh->file_size;
++                                              }
++
++                                              yaffs_verify_oh(object, oh, &tags, 1);
++                                              newChunk =
++                                                  yaffs_write_new_chunk(dev,(__u8 *) oh, &tags, 1);
++                                      } else
++                                              newChunk =
++                                                  yaffs_write_new_chunk(dev, buffer, &tags, 1);
++
++                                      if (newChunk < 0) {
++                                              retVal = YAFFS_FAIL;
++                                      } else {
+ 
+-      yaffs_GetCheckpointSum(dev, &checkpointSum);
++                                              /* Ok, now fix up the Tnodes etc. */
+ 
+-      ok = (yaffs_CheckpointWrite(dev, &checkpointSum, sizeof(checkpointSum)) == sizeof(checkpointSum));
++                                              if (tags.chunk_id == 0) {
++                                                      /* It's a header */
++                                                      object->hdr_chunk =  newChunk;
++                                                      object->serial =   tags.serial_number;
++                                              } else {
++                                                      /* It's a data chunk */
++                                                      int ok;
++                                                      ok = yaffs_put_chunk_in_file
++                                                          (object,
++                                                           tags.chunk_id,
++                                                           newChunk, 0);
++                                              }
++                                      }
++                              }
+ 
+-      if (!ok)
+-              return 0;
++                              if (retVal == YAFFS_OK)
++                                      yaffs_chunk_del(dev, oldChunk, mark_flash, __LINE__);
+ 
+-      return 1;
+-}
++                      }
++              }
+ 
+-static int yaffs_ReadCheckpointSum(yaffs_Device *dev)
+-{
+-      __u32 checkpointSum0;
+-      __u32 checkpointSum1;
+-      int ok;
++              yaffs_release_temp_buffer(dev, buffer, __LINE__);
+ 
+-      yaffs_GetCheckpointSum(dev, &checkpointSum0);
+ 
+-      ok = (yaffs_CheckpointRead(dev, &checkpointSum1, sizeof(checkpointSum1)) == sizeof(checkpointSum1));
+ 
+-      if (!ok)
+-              return 0;
++      }
+ 
+-      if (checkpointSum0 != checkpointSum1)
+-              return 0;
++      yaffs_verify_collected_blk(dev, bi, block);
+ 
+-      return 1;
+-}
+ 
+ 
+-static int yaffs_WriteCheckpointData(yaffs_Device *dev)
+-{
+-      int ok = 1;
++      if (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) {
++              /*
++               * The gc did not complete. Set block state back to FULL
++               * because checkpointing does not restore gc.
++               */
++              bi->block_state = YAFFS_BLOCK_STATE_FULL;
++      } else {
++              /* The gc completed. */
++              /* Do any required cleanups */
++              for (i = 0; i < dev->n_clean_ups; i++) {
++                      /* Time to delete the file too */
++                      object =
++                          yaffs_find_by_number(dev,
++                                                   dev->gc_cleanup_list[i]);
++                      if (object) {
++                              yaffs_free_tnode(dev,
++                                              object->variant.file_variant.
++                                              top);
++                              object->variant.file_variant.top = NULL;
++                              T(YAFFS_TRACE_GC,
++                                (TSTR
++                                 ("yaffs: About to finally delete object %d"
++                                  TENDSTR), object->obj_id));
++                              yaffs_generic_obj_del(object);
++                              object->my_dev->n_deleted_files--;
++                      }
+ 
+-      if (dev->skipCheckpointWrite || !dev->isYaffs2) {
+-              T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR)));
+-              ok = 0;
+-      }
++              }
+ 
+-      if (ok)
+-              ok = yaffs_CheckpointOpen(dev, 1);
+ 
+-      if (ok) {
+-              T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
+-              ok = yaffs_WriteCheckpointValidityMarker(dev, 1);
+-      }
+-      if (ok) {
+-              T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR)));
+-              ok = yaffs_WriteCheckpointDevice(dev);
+-      }
+-      if (ok) {
+-              T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR)));
+-              ok = yaffs_WriteCheckpointObjects(dev);
+-      }
+-      if (ok) {
+-              T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
+-              ok = yaffs_WriteCheckpointValidityMarker(dev, 0);
++              chunksAfter = yaffs_get_erased_chunks(dev);
++              if (chunksBefore >= chunksAfter) {
++                      T(YAFFS_TRACE_GC,
++                        (TSTR
++                         ("gc did not increase free chunks before %d after %d"
++                          TENDSTR), chunksBefore, chunksAfter));
++              }
++              dev->gc_block = 0;
++              dev->gc_chunk = 0;
++              dev->n_clean_ups = 0;
+       }
+ 
+-      if (ok)
+-              ok = yaffs_WriteCheckpointSum(dev);
+-
+-      if (!yaffs_CheckpointClose(dev))
+-              ok = 0;
+-
+-      if (ok)
+-              dev->isCheckpointed = 1;
+-      else
+-              dev->isCheckpointed = 0;
++      dev->gc_disable = 0;
+ 
+-      return dev->isCheckpointed;
++      return retVal;
+ }
+ 
+-static int yaffs_ReadCheckpointData(yaffs_Device *dev)
++/*
++ * FindBlockForgarbageCollection is used to select the dirtiest block (or close enough)
++ * for garbage collection.
++ */
++
++static unsigned yaffs_find_gc_block(yaffs_dev_t *dev,
++                                      int aggressive,
++                                      int background)
+ {
+-      int ok = 1;
++      int i;
++      int iterations;
++      unsigned selected = 0;
++      int prioritised = 0;
++      int prioritisedExists = 0;
++      yaffs_block_info_t *bi;
++      int threshold;
+ 
+-      if (dev->skipCheckpointRead || !dev->isYaffs2) {
+-              T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR)));
+-              ok = 0;
+-      }
++      /* First let's see if we need to grab a prioritised block */
++      if (dev->has_pending_prioritised_gc && !aggressive) {
++              dev->gc_dirtiest = 0;
++              bi = dev->block_info;
++              for (i = dev->internal_start_block;
++                      i <= dev->internal_end_block && !selected;
++                      i++) {
++
++                      if (bi->gc_prioritise) {
++                              prioritisedExists = 1;
++                              if (bi->block_state == YAFFS_BLOCK_STATE_FULL &&
++                                 yaffs_block_ok_for_gc(dev, bi)) {
++                                      selected = i;
++                                      prioritised = 1;
++                              }
++                      }
++                      bi++;
++              }
+ 
+-      if (ok)
+-              ok = yaffs_CheckpointOpen(dev, 0); /* open for read */
++              /*
++               * If there is a prioritised block and none was selected then
++               * this happened because there is at least one old dirty block gumming
++               * up the works. Let's gc the oldest dirty block.
++               */
+ 
+-      if (ok) {
+-              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
+-              ok = yaffs_ReadCheckpointValidityMarker(dev, 1);
+-      }
+-      if (ok) {
+-              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR)));
+-              ok = yaffs_ReadCheckpointDevice(dev);
+-      }
+-      if (ok) {
+-              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR)));
+-              ok = yaffs_ReadCheckpointObjects(dev);
+-      }
+-      if (ok) {
+-              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
+-              ok = yaffs_ReadCheckpointValidityMarker(dev, 0);
+-      }
++              if(prioritisedExists &&
++                      !selected &&
++                      dev->oldest_dirty_block > 0)
++                      selected = dev->oldest_dirty_block;
+ 
+-      if (ok) {
+-              ok = yaffs_ReadCheckpointSum(dev);
+-              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok));
++              if (!prioritisedExists) /* None found, so we can clear this */
++                      dev->has_pending_prioritised_gc = 0;
+       }
+ 
+-      if (!yaffs_CheckpointClose(dev))
+-              ok = 0;
+-
+-      if (ok)
+-              dev->isCheckpointed = 1;
+-      else
+-              dev->isCheckpointed = 0;
+-
+-      return ok ? 1 : 0;
++      /* If we're doing aggressive GC then we are happy to take a less-dirty block, and
++       * search harder.
++       * else (we're doing a leasurely gc), then we only bother to do this if the
++       * block has only a few pages in use.
++       */
+ 
+-}
++      if (!selected){
++              int pagesUsed;
++              int nBlocks = dev->internal_end_block - dev->internal_start_block + 1;
++              if (aggressive){
++                      threshold = dev->param.chunks_per_block;
++                      iterations = nBlocks;
++              } else {
++                      int maxThreshold;
+ 
+-static void yaffs_InvalidateCheckpoint(yaffs_Device *dev)
+-{
+-      if (dev->isCheckpointed ||
+-                      dev->blocksInCheckpoint > 0) {
+-              dev->isCheckpointed = 0;
+-              yaffs_CheckpointInvalidateStream(dev);
+-              if (dev->superBlock && dev->markSuperBlockDirty)
+-                      dev->markSuperBlockDirty(dev->superBlock);
+-      }
+-}
++                      if(background)
++                              maxThreshold = dev->param.chunks_per_block/2;
++                      else
++                              maxThreshold = dev->param.chunks_per_block/8;
+ 
++                      if(maxThreshold <  YAFFS_GC_PASSIVE_THRESHOLD)
++                              maxThreshold = YAFFS_GC_PASSIVE_THRESHOLD;
+ 
+-int yaffs_CheckpointSave(yaffs_Device *dev)
+-{
++                      threshold = background ?
++                              (dev->gc_not_done + 2) * 2 : 0;
++                      if(threshold <YAFFS_GC_PASSIVE_THRESHOLD)
++                              threshold = YAFFS_GC_PASSIVE_THRESHOLD;
++                      if(threshold > maxThreshold)
++                              threshold = maxThreshold;
+ 
+-      T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
++                      iterations = nBlocks / 16 + 1;
++                      if (iterations > 100)
++                              iterations = 100;
++              }
+ 
+-      yaffs_VerifyObjects(dev);
+-      yaffs_VerifyBlocks(dev);
+-      yaffs_VerifyFreeChunks(dev);
++              for (i = 0;
++                      i < iterations &&
++                      (dev->gc_dirtiest < 1 ||
++                              dev->gc_pages_in_use > YAFFS_GC_GOOD_ENOUGH);
++                      i++) {
++                      dev->gc_block_finder++;
++                      if (dev->gc_block_finder < dev->internal_start_block ||
++                              dev->gc_block_finder > dev->internal_end_block)
++                              dev->gc_block_finder = dev->internal_start_block;
+ 
+-      if (!dev->isCheckpointed) {
+-              yaffs_InvalidateCheckpoint(dev);
+-              yaffs_WriteCheckpointData(dev);
+-      }
++                      bi = yaffs_get_block_info(dev, dev->gc_block_finder);
+ 
+-      T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
++                      pagesUsed = bi->pages_in_use - bi->soft_del_pages;
+ 
+-      return dev->isCheckpointed;
+-}
++                      if (bi->block_state == YAFFS_BLOCK_STATE_FULL &&
++                              pagesUsed < dev->param.chunks_per_block &&
++                              (dev->gc_dirtiest < 1 || pagesUsed < dev->gc_pages_in_use) &&
++                              yaffs_block_ok_for_gc(dev, bi)) {
++                              dev->gc_dirtiest = dev->gc_block_finder;
++                              dev->gc_pages_in_use = pagesUsed;
++                      }
++              }
+ 
+-int yaffs_CheckpointRestore(yaffs_Device *dev)
+-{
+-      int retval;
+-      T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
++              if(dev->gc_dirtiest > 0 && dev->gc_pages_in_use <= threshold)
++                      selected = dev->gc_dirtiest;
++      }
+ 
+-      retval = yaffs_ReadCheckpointData(dev);
++      /*
++       * If nothing has been selected for a while, try selecting the oldest dirty
++       * because that's gumming up the works.
++       */
+ 
+-      if (dev->isCheckpointed) {
+-              yaffs_VerifyObjects(dev);
+-              yaffs_VerifyBlocks(dev);
+-              yaffs_VerifyFreeChunks(dev);
++      if(!selected && dev->param.is_yaffs2 &&
++              dev->gc_not_done >= ( background ? 10 : 20)){
++              yaffs2_find_oldest_dirty_seq(dev);
++              if(dev->oldest_dirty_block > 0) {
++                      selected = dev->oldest_dirty_block;
++                      dev->gc_dirtiest = selected;
++                      dev->oldest_dirty_gc_count++;
++                      bi = yaffs_get_block_info(dev, selected);
++                      dev->gc_pages_in_use =  bi->pages_in_use - bi->soft_del_pages;
++              } else
++                      dev->gc_not_done = 0;
+       }
+ 
+-      T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
++      if(selected){
++              T(YAFFS_TRACE_GC,
++                (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR),
++                selected,
++                dev->param.chunks_per_block - dev->gc_pages_in_use,
++                prioritised));
++
++              dev->n_gc_blocks++;
++              if(background)
++                      dev->bg_gcs++;
++
++              dev->gc_dirtiest = 0;
++              dev->gc_pages_in_use = 0;
++              dev->gc_not_done = 0;
++              if(dev->refresh_skip > 0)
++                      dev->refresh_skip--;
++      } else{
++              dev->gc_not_done++;
++              T(YAFFS_TRACE_GC,
++                (TSTR("GC none: finder %d skip %d threshold %d dirtiest %d using %d oldest %d%s" TENDSTR),
++                dev->gc_block_finder, dev->gc_not_done,
++                threshold,
++                dev->gc_dirtiest, dev->gc_pages_in_use,
++                dev->oldest_dirty_block,
++                background ? " bg" : ""));
++      }
+ 
+-      return retval;
++      return selected;
+ }
+ 
+-/*--------------------- File read/write ------------------------
+- * Read and write have very similar structures.
+- * In general the read/write has three parts to it
+- * An incomplete chunk to start with (if the read/write is not chunk-aligned)
+- * Some complete chunks
+- * An incomplete chunk to end off with
++/* New garbage collector
++ * If we're very low on erased blocks then we do aggressive garbage collection
++ * otherwise we do "leasurely" garbage collection.
++ * Aggressive gc looks further (whole array) and will accept less dirty blocks.
++ * Passive gc only inspects smaller areas and will only accept more dirty blocks.
+  *
+- * Curve-balls: the first chunk might also be the last chunk.
++ * The idea is to help clear out space in a more spread-out manner.
++ * Dunno if it really does anything useful.
+  */
+-
+-int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset,
+-                      int nBytes)
++static int yaffs_check_gc(yaffs_dev_t *dev, int background)
+ {
++      int aggressive = 0;
++      int gcOk = YAFFS_OK;
++      int maxTries = 0;
++      int minErased;
++      int erasedChunks;
++      int checkpointBlockAdjust;
+ 
+-      int chunk;
+-      __u32 start;
+-      int nToCopy;
+-      int n = nBytes;
+-      int nDone = 0;
+-      yaffs_ChunkCache *cache;
+-
+-      yaffs_Device *dev;
+-
+-      dev = in->myDev;
+-
+-      while (n > 0) {
+-              /* chunk = offset / dev->nDataBytesPerChunk + 1; */
+-              /* start = offset % dev->nDataBytesPerChunk; */
+-              yaffs_AddrToChunk(dev, offset, &chunk, &start);
+-              chunk++;
+-
+-              /* OK now check for the curveball where the start and end are in
+-               * the same chunk.
+-               */
+-              if ((start + n) < dev->nDataBytesPerChunk)
+-                      nToCopy = n;
+-              else
+-                      nToCopy = dev->nDataBytesPerChunk - start;
+-
+-              cache = yaffs_FindChunkCache(in, chunk);
+-
+-              /* If the chunk is already in the cache or it is less than a whole chunk
+-               * or we're using inband tags then use the cache (if there is caching)
+-               * else bypass the cache.
+-               */
+-              if (cache || nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) {
+-                      if (dev->nShortOpCaches > 0) {
+-
+-                              /* If we can't find the data in the cache, then load it up. */
++      if(dev->param.gc_control &&
++              (dev->param.gc_control(dev) & 1) == 0)
++              return YAFFS_OK;
+ 
+-                              if (!cache) {
+-                                      cache = yaffs_GrabChunkCache(in->myDev);
+-                                      cache->object = in;
+-                                      cache->chunkId = chunk;
+-                                      cache->dirty = 0;
+-                                      cache->locked = 0;
+-                                      yaffs_ReadChunkDataFromObject(in, chunk,
+-                                                                    cache->
+-                                                                    data);
+-                                      cache->nBytes = 0;
+-                              }
++      if (dev->gc_disable) {
++              /* Bail out so we don't get recursive gc */
++              return YAFFS_OK;
++      }
+ 
+-                              yaffs_UseChunkCache(dev, cache, 0);
++      /* This loop should pass the first time.
++       * We'll only see looping here if the collection does not increase space.
++       */
+ 
+-                              cache->locked = 1;
++      do {
++              maxTries++;
+ 
++              checkpointBlockAdjust = yaffs_calc_checkpt_blocks_required(dev);
+ 
+-                              memcpy(buffer, &cache->data[start], nToCopy);
++              minErased  = dev->param.n_reserved_blocks + checkpointBlockAdjust + 1;
++              erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block;
+ 
+-                              cache->locked = 0;
+-                      } else {
+-                              /* Read into the local buffer then copy..*/
++              /* If we need a block soon then do aggressive gc.*/
++              if (dev->n_erased_blocks < minErased)
++                      aggressive = 1;
++              else {
++                      if(!background && erasedChunks > (dev->n_free_chunks / 4))
++                              break;
+ 
+-                              __u8 *localBuffer =
+-                                  yaffs_GetTempBuffer(dev, __LINE__);
+-                              yaffs_ReadChunkDataFromObject(in, chunk,
+-                                                            localBuffer);
++                      if(dev->gc_skip > 20)
++                              dev->gc_skip = 20;
++                      if(erasedChunks < dev->n_free_chunks/2 ||
++                              dev->gc_skip < 1 ||
++                              background)
++                              aggressive = 0;
++                      else {
++                              dev->gc_skip--;
++                              break;
++                      }
++              }
+ 
+-                              memcpy(buffer, &localBuffer[start], nToCopy);
++              dev->gc_skip = 5;
+ 
++                /* If we don't already have a block being gc'd then see if we should start another */
+ 
+-                              yaffs_ReleaseTempBuffer(dev, localBuffer,
+-                                                      __LINE__);
+-                      }
++              if (dev->gc_block < 1 && !aggressive) {
++                      dev->gc_block = yaffs2_find_refresh_block(dev);
++                      dev->gc_chunk = 0;
++                      dev->n_clean_ups=0;
++              }
++              if (dev->gc_block < 1) {
++                      dev->gc_block = yaffs_find_gc_block(dev, aggressive, background);
++                      dev->gc_chunk = 0;
++                      dev->n_clean_ups=0;
++              }
+ 
+-              } else {
++              if (dev->gc_block > 0) {
++                      dev->all_gcs++;
++                      if (!aggressive)
++                              dev->passive_gc_count++;
+ 
+-                      /* A full chunk. Read directly into the supplied buffer. */
+-                      yaffs_ReadChunkDataFromObject(in, chunk, buffer);
++                      T(YAFFS_TRACE_GC,
++                        (TSTR
++                         ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR),
++                         dev->n_erased_blocks, aggressive));
+ 
++                      gcOk = yaffs_gc_block(dev, dev->gc_block, aggressive);
+               }
+ 
+-              n -= nToCopy;
+-              offset += nToCopy;
+-              buffer += nToCopy;
+-              nDone += nToCopy;
+-
+-      }
++              if (dev->n_erased_blocks < (dev->param.n_reserved_blocks) && dev->gc_block > 0) {
++                      T(YAFFS_TRACE_GC,
++                        (TSTR
++                         ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d"
++                          TENDSTR), dev->n_erased_blocks, maxTries, dev->gc_block));
++              }
++      } while ((dev->n_erased_blocks < dev->param.n_reserved_blocks) &&
++               (dev->gc_block > 0) &&
++               (maxTries < 2));
+ 
+-      return nDone;
++      return aggressive ? gcOk : YAFFS_OK;
+ }
+ 
+-int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
+-                      int nBytes, int writeThrough)
++/*
++ * yaffs_bg_gc()
++ * Garbage collects. Intended to be called from a background thread.
++ * Returns non-zero if at least half the free chunks are erased.
++ */
++int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency)
+ {
++      int erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block;
+ 
+-      int chunk;
+-      __u32 start;
+-      int nToCopy;
+-      int n = nBytes;
+-      int nDone = 0;
+-      int nToWriteBack;
+-      int startOfWrite = offset;
+-      int chunkWritten = 0;
+-      __u32 nBytesRead;
+-      __u32 chunkStart;
++      T(YAFFS_TRACE_BACKGROUND, (TSTR("Background gc %u" TENDSTR),urgency));
+ 
+-      yaffs_Device *dev;
++      yaffs_check_gc(dev, 1);
++      return erasedChunks > dev->n_free_chunks/2;
++}
+ 
+-      dev = in->myDev;
++/*-------------------------  TAGS --------------------------------*/
+ 
+-      while (n > 0 && chunkWritten >= 0) {
+-              /* chunk = offset / dev->nDataBytesPerChunk + 1; */
+-              /* start = offset % dev->nDataBytesPerChunk; */
+-              yaffs_AddrToChunk(dev, offset, &chunk, &start);
++static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id,
++                         int chunkInObject)
++{
++      return (tags->chunk_id == chunkInObject &&
++              tags->obj_id == obj_id && !tags->is_deleted) ? 1 : 0;
+ 
+-              if (chunk * dev->nDataBytesPerChunk + start != offset ||
+-                              start >= dev->nDataBytesPerChunk) {
+-                      T(YAFFS_TRACE_ERROR, (
+-                         TSTR("AddrToChunk of offset %d gives chunk %d start %d"
+-                         TENDSTR),
+-                         (int)offset, chunk, start));
+-              }
+-              chunk++;
++}
+ 
+-              /* OK now check for the curveball where the start and end are in
+-               * the same chunk.
+-               */
+ 
+-              if ((start + n) < dev->nDataBytesPerChunk) {
+-                      nToCopy = n;
++/*-------------------- Data file manipulation -----------------*/
+ 
+-                      /* Now folks, to calculate how many bytes to write back....
+-                       * If we're overwriting and not writing to then end of file then
+-                       * we need to write back as much as was there before.
+-                       */
++static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk,
++                               yaffs_ext_tags *tags)
++{
++      /*Get the Tnode, then get the level 0 offset chunk offset */
++      yaffs_tnode_t *tn;
++      int theChunk = -1;
++      yaffs_ext_tags localTags;
++      int retVal = -1;
+ 
+-                      chunkStart = ((chunk - 1) * dev->nDataBytesPerChunk);
++      yaffs_dev_t *dev = in->my_dev;
+ 
+-                      if (chunkStart > in->variant.fileVariant.fileSize)
+-                              nBytesRead = 0; /* Past end of file */
+-                      else
+-                              nBytesRead = in->variant.fileVariant.fileSize - chunkStart;
++      if (!tags) {
++              /* Passed a NULL, so use our own tags space */
++              tags = &localTags;
++      }
+ 
+-                      if (nBytesRead > dev->nDataBytesPerChunk)
+-                              nBytesRead = dev->nDataBytesPerChunk;
++      tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk);
+ 
+-                      nToWriteBack =
+-                          (nBytesRead >
+-                           (start + n)) ? nBytesRead : (start + n);
++      if (tn) {
++              theChunk = yaffs_get_group_base(dev, tn, inode_chunk);
+ 
+-                      if (nToWriteBack < 0 || nToWriteBack > dev->nDataBytesPerChunk)
+-                              YBUG();
++              retVal =
++                  yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id,
++                                         inode_chunk);
++      }
++      return retVal;
++}
+ 
+-              } else {
+-                      nToCopy = dev->nDataBytesPerChunk - start;
+-                      nToWriteBack = dev->nDataBytesPerChunk;
+-              }
++static int yaffs_find_del_file_chunk(yaffs_obj_t *in, int inode_chunk,
++                                        yaffs_ext_tags *tags)
++{
++      /* Get the Tnode, then get the level 0 offset chunk offset */
++      yaffs_tnode_t *tn;
++      int theChunk = -1;
++      yaffs_ext_tags localTags;
+ 
+-              if (nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) {
+-                      /* An incomplete start or end chunk (or maybe both start and end chunk),
+-                       * or we're using inband tags, so we want to use the cache buffers.
+-                       */
+-                      if (dev->nShortOpCaches > 0) {
+-                              yaffs_ChunkCache *cache;
+-                              /* If we can't find the data in the cache, then load the cache */
+-                              cache = yaffs_FindChunkCache(in, chunk);
++      yaffs_dev_t *dev = in->my_dev;
++      int retVal = -1;
+ 
+-                              if (!cache
+-                                  && yaffs_CheckSpaceForAllocation(in->
+-                                                                   myDev)) {
+-                                      cache = yaffs_GrabChunkCache(in->myDev);
+-                                      cache->object = in;
+-                                      cache->chunkId = chunk;
+-                                      cache->dirty = 0;
+-                                      cache->locked = 0;
+-                                      yaffs_ReadChunkDataFromObject(in, chunk,
+-                                                                    cache->
+-                                                                    data);
+-                              } else if (cache &&
+-                                      !cache->dirty &&
+-                                      !yaffs_CheckSpaceForAllocation(in->myDev)) {
+-                                      /* Drop the cache if it was a read cache item and
+-                                       * no space check has been made for it.
+-                                       */
+-                                       cache = NULL;
+-                              }
++      if (!tags) {
++              /* Passed a NULL, so use our own tags space */
++              tags = &localTags;
++      }
+ 
+-                              if (cache) {
+-                                      yaffs_UseChunkCache(dev, cache, 1);
+-                                      cache->locked = 1;
++      tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk);
+ 
++      if (tn) {
+ 
+-                                      memcpy(&cache->data[start], buffer,
+-                                             nToCopy);
++              theChunk = yaffs_get_group_base(dev, tn, inode_chunk);
+ 
++              retVal =
++                  yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id,
++                                         inode_chunk);
+ 
+-                                      cache->locked = 0;
+-                                      cache->nBytes = nToWriteBack;
++              /* Delete the entry in the filestructure (if found) */
++              if (retVal != -1)
++                      yaffs_load_tnode_0(dev, tn, inode_chunk, 0);
++      }
+ 
+-                                      if (writeThrough) {
+-                                              chunkWritten =
+-                                                  yaffs_WriteChunkDataToObject
+-                                                  (cache->object,
+-                                                   cache->chunkId,
+-                                                   cache->data, cache->nBytes,
+-                                                   1);
+-                                              cache->dirty = 0;
+-                                      }
++      return retVal;
++}
+ 
+-                              } else {
+-                                      chunkWritten = -1;      /* fail the write */
+-                              }
+-                      } else {
+-                              /* An incomplete start or end chunk (or maybe both start and end chunk)
+-                               * Read into the local buffer then copy, then copy over and write back.
+-                               */
+ 
+-                              __u8 *localBuffer =
+-                                  yaffs_GetTempBuffer(dev, __LINE__);
++int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk,
++                              int nand_chunk, int in_scan)
++{
++      /* NB in_scan is zero unless scanning.
++       * For forward scanning, in_scan is > 0;
++       * for backward scanning in_scan is < 0
++       *
++       * nand_chunk = 0 is a dummy insert to make sure the tnodes are there.
++       */
+ 
+-                              yaffs_ReadChunkDataFromObject(in, chunk,
+-                                                            localBuffer);
++      yaffs_tnode_t *tn;
++      yaffs_dev_t *dev = in->my_dev;
++      int existingChunk;
++      yaffs_ext_tags existingTags;
++      yaffs_ext_tags newTags;
++      unsigned existingSerial, newSerial;
+ 
++      if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) {
++              /* Just ignore an attempt at putting a chunk into a non-file during scanning
++               * If it is not during Scanning then something went wrong!
++               */
++              if (!in_scan) {
++                      T(YAFFS_TRACE_ERROR,
++                        (TSTR
++                         ("yaffs tragedy:attempt to put data chunk into a non-file"
++                          TENDSTR)));
++                      YBUG();
++              }
+ 
++              yaffs_chunk_del(dev, nand_chunk, 1, __LINE__);
++              return YAFFS_OK;
++      }
+ 
+-                              memcpy(&localBuffer[start], buffer, nToCopy);
++      tn = yaffs_add_find_tnode_0(dev,
++                                      &in->variant.file_variant,
++                                      inode_chunk,
++                                      NULL);
++      if (!tn)
++              return YAFFS_FAIL;
++      
++      if(!nand_chunk)
++              /* Dummy insert, bail now */
++              return YAFFS_OK;
+ 
+-                              chunkWritten =
+-                                  yaffs_WriteChunkDataToObject(in, chunk,
+-                                                               localBuffer,
+-                                                               nToWriteBack,
+-                                                               0);
++      existingChunk = yaffs_get_group_base(dev, tn, inode_chunk);
+ 
+-                              yaffs_ReleaseTempBuffer(dev, localBuffer,
+-                                                      __LINE__);
++      if (in_scan != 0) {
++              /* If we're scanning then we need to test for duplicates
++               * NB This does not need to be efficient since it should only ever
++               * happen when the power fails during a write, then only one
++               * chunk should ever be affected.
++               *
++               * Correction for YAFFS2: This could happen quite a lot and we need to think about efficiency! TODO
++               * Update: For backward scanning we don't need to re-read tags so this is quite cheap.
++               */
++
++              if (existingChunk > 0) {
++                      /* NB Right now existing chunk will not be real chunk_id if the chunk group size > 1
++                       *    thus we have to do a FindChunkInFile to get the real chunk id.
++                       *
++                       * We have a duplicate now we need to decide which one to use:
++                       *
++                       * Backwards scanning YAFFS2: The old one is what we use, dump the new one.
++                       * Forward scanning YAFFS2: The new one is what we use, dump the old one.
++                       * YAFFS1: Get both sets of tags and compare serial numbers.
++                       */
++
++                      if (in_scan > 0) {
++                              /* Only do this for forward scanning */
++                              yaffs_rd_chunk_tags_nand(dev,
++                                                              nand_chunk,
++                                                              NULL, &newTags);
+ 
++                              /* Do a proper find */
++                              existingChunk =
++                                  yaffs_find_chunk_in_file(in, inode_chunk,
++                                                        &existingTags);
+                       }
+ 
+-              } else {
+-                      /* A full chunk. Write directly from the supplied buffer. */
++                      if (existingChunk <= 0) {
++                              /*Hoosterman - how did this happen? */
+ 
++                              T(YAFFS_TRACE_ERROR,
++                                (TSTR
++                                 ("yaffs tragedy: existing chunk < 0 in scan"
++                                  TENDSTR)));
+ 
++                      }
+ 
+-                      chunkWritten =
+-                          yaffs_WriteChunkDataToObject(in, chunk, buffer,
+-                                                       dev->nDataBytesPerChunk,
+-                                                       0);
++                      /* NB The deleted flags should be false, otherwise the chunks will
++                       * not be loaded during a scan
++                       */
+ 
+-                      /* Since we've overwritten the cached data, we better invalidate it. */
+-                      yaffs_InvalidateChunkCache(in, chunk);
+-              }
++                      if (in_scan > 0) {
++                              newSerial = newTags.serial_number;
++                              existingSerial = existingTags.serial_number;
++                      }
+ 
+-              if (chunkWritten >= 0) {
+-                      n -= nToCopy;
+-                      offset += nToCopy;
+-                      buffer += nToCopy;
+-                      nDone += nToCopy;
++                      if ((in_scan > 0) &&
++                          (existingChunk <= 0 ||
++                           ((existingSerial + 1) & 3) == newSerial)) {
++                              /* Forward scanning.
++                               * Use new
++                               * Delete the old one and drop through to update the tnode
++                               */
++                              yaffs_chunk_del(dev, existingChunk, 1,
++                                                __LINE__);
++                      } else {
++                              /* Backward scanning or we want to use the existing one
++                               * Use existing.
++                               * Delete the new one and return early so that the tnode isn't changed
++                               */
++                              yaffs_chunk_del(dev, nand_chunk, 1,
++                                                __LINE__);
++                              return YAFFS_OK;
++                      }
+               }
+ 
+       }
+ 
+-      /* Update file object */
+-
+-      if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize)
+-              in->variant.fileVariant.fileSize = (startOfWrite + nDone);
++      if (existingChunk == 0)
++              in->n_data_chunks++;
+ 
+-      in->dirty = 1;
++      yaffs_load_tnode_0(dev, tn, inode_chunk, nand_chunk);
+ 
+-      return nDone;
++      return YAFFS_OK;
+ }
+ 
++static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk,
++                                      __u8 *buffer)
++{
++      int nand_chunk = yaffs_find_chunk_in_file(in, inode_chunk, NULL);
+ 
+-/* ---------------------- File resizing stuff ------------------ */
++      if (nand_chunk >= 0)
++              return yaffs_rd_chunk_tags_nand(in->my_dev, nand_chunk,
++                                              buffer, NULL);
++      else {
++              T(YAFFS_TRACE_NANDACCESS,
++                (TSTR("Chunk %d not found zero instead" TENDSTR),
++                 nand_chunk));
++              /* get sane (zero) data if you read a hole */
++              memset(buffer, 0, in->my_dev->data_bytes_per_chunk);
++              return 0;
++      }
++
++}
+ 
+-static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize)
++void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn)
+ {
++      int block;
++      int page;
++      yaffs_ext_tags tags;
++      yaffs_block_info_t *bi;
+ 
+-      yaffs_Device *dev = in->myDev;
+-      int oldFileSize = in->variant.fileVariant.fileSize;
++      if (chunk_id <= 0)
++              return;
+ 
+-      int lastDel = 1 + (oldFileSize - 1) / dev->nDataBytesPerChunk;
++      dev->n_deletions++;
++      block = chunk_id / dev->param.chunks_per_block;
++      page = chunk_id % dev->param.chunks_per_block;
+ 
+-      int startDel = 1 + (newSize + dev->nDataBytesPerChunk - 1) /
+-          dev->nDataBytesPerChunk;
+-      int i;
+-      int chunkId;
+ 
+-      /* Delete backwards so that we don't end up with holes if
+-       * power is lost part-way through the operation.
++      if (!yaffs_check_chunk_bit(dev, block, page))
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Deleting invalid chunk %d"TENDSTR),
++                       chunk_id));
++
++      bi = yaffs_get_block_info(dev, block);
++      
++      yaffs2_update_oldest_dirty_seq(dev, block, bi);
++
++      T(YAFFS_TRACE_DELETION,
++        (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunk_id));
++
++      if (!dev->param.is_yaffs2 && mark_flash &&
++          bi->block_state != YAFFS_BLOCK_STATE_COLLECTING) {
++
++              yaffs_init_tags(&tags);
++
++              tags.is_deleted = 1;
++
++              yaffs_wr_chunk_tags_nand(dev, chunk_id, NULL, &tags);
++              yaffs_handle_chunk_update(dev, chunk_id, &tags);
++      } else {
++              dev->n_unmarked_deletions++;
++      }
++
++      /* Pull out of the management area.
++       * If the whole block became dirty, this will kick off an erasure.
+        */
+-      for (i = lastDel; i >= startDel; i--) {
+-              /* NB this could be optimised somewhat,
+-               * eg. could retrieve the tags and write them without
+-               * using yaffs_DeleteChunk
+-               */
++      if (bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING ||
++          bi->block_state == YAFFS_BLOCK_STATE_FULL ||
++          bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
++          bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) {
++              dev->n_free_chunks++;
+ 
+-              chunkId = yaffs_FindAndDeleteChunkInFile(in, i, NULL);
+-              if (chunkId > 0) {
+-                      if (chunkId <
+-                          (dev->internalStartBlock * dev->nChunksPerBlock)
+-                          || chunkId >=
+-                          ((dev->internalEndBlock +
+-                            1) * dev->nChunksPerBlock)) {
+-                              T(YAFFS_TRACE_ALWAYS,
+-                                (TSTR("Found daft chunkId %d for %d" TENDSTR),
+-                                 chunkId, i));
+-                      } else {
+-                              in->nDataChunks--;
+-                              yaffs_DeleteChunk(dev, chunkId, 1, __LINE__);
+-                      }
++              yaffs_clear_chunk_bit(dev, block, page);
++
++              bi->pages_in_use--;
++
++              if (bi->pages_in_use == 0 &&
++                  !bi->has_shrink_hdr &&
++                  bi->block_state != YAFFS_BLOCK_STATE_ALLOCATING &&
++                  bi->block_state != YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
++                      yaffs_block_became_dirty(dev, block);
+               }
++
+       }
+ 
+ }
+ 
+-int yaffs_ResizeFile(yaffs_Object *in, loff_t newSize)
++static int yaffs_wr_data_obj(yaffs_obj_t *in, int inode_chunk,
++                                      const __u8 *buffer, int n_bytes,
++                                      int useReserve)
+ {
++      /* Find old chunk Need to do this to get serial number
++       * Write new one and patch into tree.
++       * Invalidate old tags.
++       */
+ 
+-      int oldFileSize = in->variant.fileVariant.fileSize;
+-      __u32 newSizeOfPartialChunk;
+-      int newFullChunks;
++      int prevChunkId;
++      yaffs_ext_tags prevTags;
+ 
+-      yaffs_Device *dev = in->myDev;
++      int newChunkId;
++      yaffs_ext_tags newTags;
+ 
+-      yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk);
++      yaffs_dev_t *dev = in->my_dev;
+ 
+-      yaffs_FlushFilesChunkCache(in);
+-      yaffs_InvalidateWholeChunkCache(in);
++      yaffs_check_gc(dev,0);
+ 
+-      yaffs_CheckGarbageCollection(dev);
++      /* Get the previous chunk at this location in the file if it exists.
++       * If it does not exist then put a zero into the tree. This creates
++       * the tnode now, rather than later when it is harder to clean up.
++       */
++      prevChunkId = yaffs_find_chunk_in_file(in, inode_chunk, &prevTags);
++      if(prevChunkId < 1 &&
++              !yaffs_put_chunk_in_file(in, inode_chunk, 0, 0))
++              return 0;
+ 
+-      if (in->variantType != YAFFS_OBJECT_TYPE_FILE)
+-              return YAFFS_FAIL;
++      /* Set up new tags */
++      yaffs_init_tags(&newTags);
+ 
+-      if (newSize == oldFileSize)
+-              return YAFFS_OK;
++      newTags.chunk_id = inode_chunk;
++      newTags.obj_id = in->obj_id;
++      newTags.serial_number =
++          (prevChunkId > 0) ? prevTags.serial_number + 1 : 1;
++      newTags.n_bytes = n_bytes;
+ 
+-      if (newSize < oldFileSize) {
++      if (n_bytes < 1 || n_bytes > dev->param.total_bytes_per_chunk) {
++              T(YAFFS_TRACE_ERROR,
++              (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), n_bytes));
++              YBUG();
++      }
++      
++              
++      newChunkId =
++          yaffs_write_new_chunk(dev, buffer, &newTags,
++                                            useReserve);
+ 
+-              yaffs_PruneResizedChunks(in, newSize);
++      if (newChunkId > 0) {
++              yaffs_put_chunk_in_file(in, inode_chunk, newChunkId, 0);
+ 
+-              if (newSizeOfPartialChunk != 0) {
+-                      int lastChunk = 1 + newFullChunks;
++              if (prevChunkId > 0)
++                      yaffs_chunk_del(dev, prevChunkId, 1, __LINE__);
+ 
+-                      __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
++              yaffs_verify_file_sane(in);
++      }
++      return newChunkId;
+ 
+-                      /* Got to read and rewrite the last chunk with its new size and zero pad */
+-                      yaffs_ReadChunkDataFromObject(in, lastChunk,
+-                                                    localBuffer);
++}
+ 
+-                      memset(localBuffer + newSizeOfPartialChunk, 0,
+-                             dev->nDataBytesPerChunk - newSizeOfPartialChunk);
++/* UpdateObjectHeader updates the header on NAND for an object.
++ * If name is not NULL, then that new name is used.
++ */
++int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, int force,
++                           int is_shrink, int shadows, yaffs_xattr_mod *xmod)
++{
+ 
+-                      yaffs_WriteChunkDataToObject(in, lastChunk, localBuffer,
+-                                                   newSizeOfPartialChunk, 1);
++      yaffs_block_info_t *bi;
+ 
+-                      yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
+-              }
++      yaffs_dev_t *dev = in->my_dev;
+ 
+-              in->variant.fileVariant.fileSize = newSize;
++      int prevChunkId;
++      int retVal = 0;
++      int result = 0;
+ 
+-              yaffs_PruneFileStructure(dev, &in->variant.fileVariant);
+-      } else {
+-              /* newsSize > oldFileSize */
+-              in->variant.fileVariant.fileSize = newSize;
+-      }
++      int newChunkId;
++      yaffs_ext_tags newTags;
++      yaffs_ext_tags oldTags;
++      const YCHAR *alias = NULL;
+ 
++      __u8 *buffer = NULL;
++      YCHAR old_name[YAFFS_MAX_NAME_LENGTH + 1];
+ 
+-      /* Write a new object header.
+-       * show we've shrunk the file, if need be
+-       * Do this only if the file is not in the deleted directories.
+-       */
+-      if (in->parent &&
+-          in->parent->objectId != YAFFS_OBJECTID_UNLINKED &&
+-          in->parent->objectId != YAFFS_OBJECTID_DELETED)
+-              yaffs_UpdateObjectHeader(in, NULL, 0,
+-                                       (newSize < oldFileSize) ? 1 : 0, 0);
++      yaffs_obj_header *oh = NULL;
+ 
+-      return YAFFS_OK;
+-}
++      yaffs_strcpy(old_name, _Y("silly old name"));
+ 
+-loff_t yaffs_GetFileSize(yaffs_Object *obj)
+-{
+-      obj = yaffs_GetEquivalentObject(obj);
+ 
+-      switch (obj->variantType) {
+-      case YAFFS_OBJECT_TYPE_FILE:
+-              return obj->variant.fileVariant.fileSize;
+-      case YAFFS_OBJECT_TYPE_SYMLINK:
+-              return yaffs_strlen(obj->variant.symLinkVariant.alias);
+-      default:
+-              return 0;
+-      }
+-}
++      if (!in->fake ||
++              in == dev->root_dir || /* The root_dir should also be saved */
++              force  || xmod) {
+ 
++              yaffs_check_gc(dev,0);
++              yaffs_check_obj_details_loaded(in);
+ 
++              buffer = yaffs_get_temp_buffer(in->my_dev, __LINE__);
++              oh = (yaffs_obj_header *) buffer;
++
++              prevChunkId = in->hdr_chunk;
++
++              if (prevChunkId > 0) {
++                      result = yaffs_rd_chunk_tags_nand(dev, prevChunkId,
++                                                      buffer, &oldTags);
++
++                      yaffs_verify_oh(in, oh, &oldTags, 0);
++
++                      memcpy(old_name, oh->name, sizeof(oh->name));
++                      memset(buffer, 0xFF, sizeof(yaffs_obj_header));
++              } else
++                      memset(buffer, 0xFF, dev->data_bytes_per_chunk);
++
++              oh->type = in->variant_type;
++              oh->yst_mode = in->yst_mode;
++              oh->shadows_obj = oh->inband_shadowed_obj_id = shadows;
+ 
+-int yaffs_FlushFile(yaffs_Object *in, int updateTime)
+-{
+-      int retVal;
+-      if (in->dirty) {
+-              yaffs_FlushFilesChunkCache(in);
+-              if (updateTime) {
+ #ifdef CONFIG_YAFFS_WINCE
+-                      yfsd_WinFileTimeNow(in->win_mtime);
++              oh->win_atime[0] = in->win_atime[0];
++              oh->win_ctime[0] = in->win_ctime[0];
++              oh->win_mtime[0] = in->win_mtime[0];
++              oh->win_atime[1] = in->win_atime[1];
++              oh->win_ctime[1] = in->win_ctime[1];
++              oh->win_mtime[1] = in->win_mtime[1];
+ #else
++              oh->yst_uid = in->yst_uid;
++              oh->yst_gid = in->yst_gid;
++              oh->yst_atime = in->yst_atime;
++              oh->yst_mtime = in->yst_mtime;
++              oh->yst_ctime = in->yst_ctime;
++              oh->yst_rdev = in->yst_rdev;
++#endif
++              if (in->parent)
++                      oh->parent_obj_id = in->parent->obj_id;
++              else
++                      oh->parent_obj_id = 0;
++
++              if (name && *name) {
++                      memset(oh->name, 0, sizeof(oh->name));
++                      yaffs_load_oh_from_name(dev,oh->name,name);
++              } else if (prevChunkId > 0)
++                      memcpy(oh->name, old_name, sizeof(oh->name));
++              else
++                      memset(oh->name, 0, sizeof(oh->name));
+ 
+-                      in->yst_mtime = Y_CURRENT_TIME;
++              oh->is_shrink = is_shrink;
+ 
+-#endif
++              switch (in->variant_type) {
++              case YAFFS_OBJECT_TYPE_UNKNOWN:
++                      /* Should not happen */
++                      break;
++              case YAFFS_OBJECT_TYPE_FILE:
++                      oh->file_size =
++                          (oh->parent_obj_id == YAFFS_OBJECTID_DELETED
++                           || oh->parent_obj_id ==
++                           YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant.
++                          file_variant.file_size;
++                      break;
++              case YAFFS_OBJECT_TYPE_HARDLINK:
++                      oh->equiv_id =
++                          in->variant.hardlink_variant.equiv_id;
++                      break;
++              case YAFFS_OBJECT_TYPE_SPECIAL:
++                      /* Do nothing */
++                      break;
++              case YAFFS_OBJECT_TYPE_DIRECTORY:
++                      /* Do nothing */
++                      break;
++              case YAFFS_OBJECT_TYPE_SYMLINK:
++                      alias = in->variant.symlink_variant.alias;
++                      if(!alias)
++                              alias = _Y("no alias");
++                      yaffs_strncpy(oh->alias,
++                                      alias,
++                                    YAFFS_MAX_ALIAS_LENGTH);
++                      oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0;
++                      break;
+               }
+ 
+-              retVal = (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >=
+-                      0) ? YAFFS_OK : YAFFS_FAIL;
+-      } else {
+-              retVal = YAFFS_OK;
+-      }
++              /* process any xattrib modifications */
++              if(xmod)
++                      yaffs_apply_xattrib_mod(in, (char *)buffer, xmod);
+ 
+-      return retVal;
+ 
+-}
++              /* Tags */
++              yaffs_init_tags(&newTags);
++              in->serial++;
++              newTags.chunk_id = 0;
++              newTags.obj_id = in->obj_id;
++              newTags.serial_number = in->serial;
+ 
+-static int yaffs_DoGenericObjectDeletion(yaffs_Object *in)
+-{
++              /* Add extra info for file header */
+ 
+-      /* First off, invalidate the file's data in the cache, without flushing. */
+-      yaffs_InvalidateWholeChunkCache(in);
++              newTags.extra_available = 1;
++              newTags.extra_parent_id = oh->parent_obj_id;
++              newTags.extra_length = oh->file_size;
++              newTags.extra_is_shrink = oh->is_shrink;
++              newTags.extra_equiv_id = oh->equiv_id;
++              newTags.extra_shadows = (oh->shadows_obj > 0) ? 1 : 0;
++              newTags.extra_obj_type = in->variant_type;
+ 
+-      if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) {
+-              /* Move to the unlinked directory so we have a record that it was deleted. */
+-              yaffs_ChangeObjectName(in, in->myDev->deletedDir, _Y("deleted"), 0, 0);
++              yaffs_verify_oh(in, oh, &newTags, 1);
+ 
+-      }
++              /* Create new chunk in NAND */
++              newChunkId =
++                  yaffs_write_new_chunk(dev, buffer, &newTags,
++                                                    (prevChunkId > 0) ? 1 : 0);
+ 
+-      yaffs_RemoveObjectFromDirectory(in);
+-      yaffs_DeleteChunk(in->myDev, in->hdrChunk, 1, __LINE__);
+-      in->hdrChunk = 0;
++              if (newChunkId >= 0) {
+ 
+-      yaffs_FreeObject(in);
+-      return YAFFS_OK;
++                      in->hdr_chunk = newChunkId;
+ 
+-}
++                      if (prevChunkId > 0) {
++                              yaffs_chunk_del(dev, prevChunkId, 1,
++                                                __LINE__);
++                      }
+ 
+-/* yaffs_DeleteFile deletes the whole file data
+- * and the inode associated with the file.
+- * It does not delete the links associated with the file.
+- */
+-static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in)
+-{
++                      if (!yaffs_obj_cache_dirty(in))
++                              in->dirty = 0;
+ 
+-      int retVal;
+-      int immediateDeletion = 0;
++                      /* If this was a shrink, then mark the block that the chunk lives on */
++                      if (is_shrink) {
++                              bi = yaffs_get_block_info(in->my_dev,
++                                      newChunkId / in->my_dev->param.chunks_per_block);
++                              bi->has_shrink_hdr = 1;
++                      }
+ 
+-#ifdef __KERNEL__
+-      if (!in->myInode)
+-              immediateDeletion = 1;
+-#else
+-      if (in->inUse <= 0)
+-              immediateDeletion = 1;
+-#endif
++              }
++
++              retVal = newChunkId;
+ 
+-      if (immediateDeletion) {
+-              retVal =
+-                  yaffs_ChangeObjectName(in, in->myDev->deletedDir,
+-                                         _Y("deleted"), 0, 0);
+-              T(YAFFS_TRACE_TRACING,
+-                (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
+-                 in->objectId));
+-              in->deleted = 1;
+-              in->myDev->nDeletedFiles++;
+-              if (1 || in->myDev->isYaffs2)
+-                      yaffs_ResizeFile(in, 0);
+-              yaffs_SoftDeleteFile(in);
+-      } else {
+-              retVal =
+-                  yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,
+-                                         _Y("unlinked"), 0, 0);
+       }
+ 
++      if (buffer)
++              yaffs_release_temp_buffer(dev, buffer, __LINE__);
+ 
+       return retVal;
+ }
+ 
+-int yaffs_DeleteFile(yaffs_Object *in)
+-{
+-      int retVal = YAFFS_OK;
+-      int deleted = in->deleted;
+-
+-      yaffs_ResizeFile(in, 0);
+-
+-      if (in->nDataChunks > 0) {
+-              /* Use soft deletion if there is data in the file.
+-               * That won't be the case if it has been resized to zero.
+-               */
+-              if (!in->unlinked)
+-                      retVal = yaffs_UnlinkFileIfNeeded(in);
+-
+-              if (retVal == YAFFS_OK && in->unlinked && !in->deleted) {
+-                      in->deleted = 1;
+-                      deleted = 1;
+-                      in->myDev->nDeletedFiles++;
+-                      yaffs_SoftDeleteFile(in);
+-              }
+-              return deleted ? YAFFS_OK : YAFFS_FAIL;
+-      } else {
+-              /* The file has no data chunks so we toss it immediately */
+-              yaffs_FreeTnode(in->myDev, in->variant.fileVariant.top);
+-              in->variant.fileVariant.top = NULL;
+-              yaffs_DoGenericObjectDeletion(in);
+-
+-              return YAFFS_OK;
+-      }
+-}
++/*------------------------ Short Operations Cache ----------------------------------------
++ *   In many situations where there is no high level buffering (eg WinCE) a lot of
++ *   reads might be short sequential reads, and a lot of writes may be short
++ *   sequential writes. eg. scanning/writing a jpeg file.
++ *   In these cases, a short read/write cache can provide a huge perfomance benefit
++ *   with dumb-as-a-rock code.
++ *   In Linux, the page cache provides read buffering aand the short op cache provides write
++ *   buffering.
++ *
++ *   There are a limited number (~10) of cache chunks per device so that we don't
++ *   need a very intelligent search.
++ */
+ 
+-static int yaffs_DeleteDirectory(yaffs_Object *in)
++static int yaffs_obj_cache_dirty(yaffs_obj_t *obj)
+ {
+-      /* First check that the directory is empty. */
+-      if (ylist_empty(&in->variant.directoryVariant.children))
+-              return yaffs_DoGenericObjectDeletion(in);
++      yaffs_dev_t *dev = obj->my_dev;
++      int i;
++      yaffs_cache_t *cache;
++      int nCaches = obj->my_dev->param.n_caches;
+ 
+-      return YAFFS_FAIL;
++      for (i = 0; i < nCaches; i++) {
++              cache = &dev->cache[i];
++              if (cache->object == obj &&
++                  cache->dirty)
++                      return 1;
++      }
+ 
++      return 0;
+ }
+ 
+-static int yaffs_DeleteSymLink(yaffs_Object *in)
+-{
+-      YFREE(in->variant.symLinkVariant.alias);
+-
+-      return yaffs_DoGenericObjectDeletion(in);
+-}
+ 
+-static int yaffs_DeleteHardLink(yaffs_Object *in)
++static void yaffs_flush_file_cache(yaffs_obj_t *obj)
+ {
+-      /* remove this hardlink from the list assocaited with the equivalent
+-       * object
+-       */
+-      ylist_del_init(&in->hardLinks);
+-      return yaffs_DoGenericObjectDeletion(in);
+-}
++      yaffs_dev_t *dev = obj->my_dev;
++      int lowest = -99;       /* Stop compiler whining. */
++      int i;
++      yaffs_cache_t *cache;
++      int chunkWritten = 0;
++      int nCaches = obj->my_dev->param.n_caches;
+ 
+-int yaffs_DeleteObject(yaffs_Object *obj)
+-{
+-int retVal = -1;
+-      switch (obj->variantType) {
+-      case YAFFS_OBJECT_TYPE_FILE:
+-              retVal = yaffs_DeleteFile(obj);
+-              break;
+-      case YAFFS_OBJECT_TYPE_DIRECTORY:
+-              return yaffs_DeleteDirectory(obj);
+-              break;
+-      case YAFFS_OBJECT_TYPE_SYMLINK:
+-              retVal = yaffs_DeleteSymLink(obj);
+-              break;
+-      case YAFFS_OBJECT_TYPE_HARDLINK:
+-              retVal = yaffs_DeleteHardLink(obj);
+-              break;
+-      case YAFFS_OBJECT_TYPE_SPECIAL:
+-              retVal = yaffs_DoGenericObjectDeletion(obj);
+-              break;
+-      case YAFFS_OBJECT_TYPE_UNKNOWN:
+-              retVal = 0;
+-              break;          /* should not happen. */
+-      }
++      if (nCaches > 0) {
++              do {
++                      cache = NULL;
+ 
+-      return retVal;
+-}
++                      /* Find the dirty cache for this object with the lowest chunk id. */
++                      for (i = 0; i < nCaches; i++) {
++                              if (dev->cache[i].object == obj &&
++                                  dev->cache[i].dirty) {
++                                      if (!cache
++                                          || dev->cache[i].chunk_id <
++                                          lowest) {
++                                              cache = &dev->cache[i];
++                                              lowest = cache->chunk_id;
++                                      }
++                              }
++                      }
+ 
+-static int yaffs_UnlinkWorker(yaffs_Object *obj)
+-{
++                      if (cache && !cache->locked) {
++                              /* Write it out and free it up */
+ 
+-      int immediateDeletion = 0;
++                              chunkWritten =
++                                  yaffs_wr_data_obj(cache->object,
++                                                               cache->chunk_id,
++                                                               cache->data,
++                                                               cache->n_bytes,
++                                                               1);
++                              cache->dirty = 0;
++                              cache->object = NULL;
++                      }
+ 
+-#ifdef __KERNEL__
+-      if (!obj->myInode)
+-              immediateDeletion = 1;
+-#else
+-      if (obj->inUse <= 0)
+-              immediateDeletion = 1;
+-#endif
++              } while (cache && chunkWritten > 0);
+ 
+-      if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
+-              return yaffs_DeleteHardLink(obj);
+-      } else if (!ylist_empty(&obj->hardLinks)) {
+-              /* Curve ball: We're unlinking an object that has a hardlink.
+-               *
+-               * This problem arises because we are not strictly following
+-               * The Linux link/inode model.
+-               *
+-               * We can't really delete the object.
+-               * Instead, we do the following:
+-               * - Select a hardlink.
+-               * - Unhook it from the hard links
+-               * - Unhook it from its parent directory (so that the rename can work)
+-               * - Rename the object to the hardlink's name.
+-               * - Delete the hardlink
+-               */
++              if (cache) {
++                      /* Hoosterman, disk full while writing cache out. */
++                      T(YAFFS_TRACE_ERROR,
++                        (TSTR("yaffs tragedy: no space during cache write" TENDSTR)));
+ 
+-              yaffs_Object *hl;
+-              int retVal;
+-              YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
++              }
++      }
+ 
+-              hl = ylist_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
++}
+ 
+-              ylist_del_init(&hl->hardLinks);
+-              ylist_del_init(&hl->siblings);
++/*yaffs_flush_whole_cache(dev)
++ *
++ *
++ */
+ 
+-              yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
++void yaffs_flush_whole_cache(yaffs_dev_t *dev)
++{
++      yaffs_obj_t *obj;
++      int nCaches = dev->param.n_caches;
++      int i;
+ 
+-              retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0);
++      /* Find a dirty object in the cache and flush it...
++       * until there are no further dirty objects.
++       */
++      do {
++              obj = NULL;
++              for (i = 0; i < nCaches && !obj; i++) {
++                      if (dev->cache[i].object &&
++                          dev->cache[i].dirty)
++                              obj = dev->cache[i].object;
+ 
+-              if (retVal == YAFFS_OK)
+-                      retVal = yaffs_DoGenericObjectDeletion(hl);
++              }
++              if (obj)
++                      yaffs_flush_file_cache(obj);
+ 
+-              return retVal;
++      } while (obj);
+ 
+-      } else if (immediateDeletion) {
+-              switch (obj->variantType) {
+-              case YAFFS_OBJECT_TYPE_FILE:
+-                      return yaffs_DeleteFile(obj);
+-                      break;
+-              case YAFFS_OBJECT_TYPE_DIRECTORY:
+-                      return yaffs_DeleteDirectory(obj);
+-                      break;
+-              case YAFFS_OBJECT_TYPE_SYMLINK:
+-                      return yaffs_DeleteSymLink(obj);
+-                      break;
+-              case YAFFS_OBJECT_TYPE_SPECIAL:
+-                      return yaffs_DoGenericObjectDeletion(obj);
+-                      break;
+-              case YAFFS_OBJECT_TYPE_HARDLINK:
+-              case YAFFS_OBJECT_TYPE_UNKNOWN:
+-              default:
+-                      return YAFFS_FAIL;
+-              }
+-      } else
+-              return yaffs_ChangeObjectName(obj, obj->myDev->unlinkedDir,
+-                                         _Y("unlinked"), 0, 0);
+ }
+ 
+ 
+-static int yaffs_UnlinkObject(yaffs_Object *obj)
++/* Grab us a cache chunk for use.
++ * First look for an empty one.
++ * Then look for the least recently used non-dirty one.
++ * Then look for the least recently used dirty one...., flush and look again.
++ */
++static yaffs_cache_t *yaffs_grab_chunk_worker(yaffs_dev_t *dev)
+ {
++      int i;
+ 
+-      if (obj && obj->unlinkAllowed)
+-              return yaffs_UnlinkWorker(obj);
+-
+-      return YAFFS_FAIL;
+-
+-}
+-int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name)
+-{
+-      yaffs_Object *obj;
++      if (dev->param.n_caches > 0) {
++              for (i = 0; i < dev->param.n_caches; i++) {
++                      if (!dev->cache[i].object)
++                              return &dev->cache[i];
++              }
++      }
+ 
+-      obj = yaffs_FindObjectByName(dir, name);
+-      return yaffs_UnlinkObject(obj);
++      return NULL;
+ }
+ 
+-/*----------------------- Initialisation Scanning ---------------------- */
+-
+-static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId,
+-                              int backwardScanning)
++static yaffs_cache_t *yaffs_grab_chunk_cache(yaffs_dev_t *dev)
+ {
+-      yaffs_Object *obj;
++      yaffs_cache_t *cache;
++      yaffs_obj_t *theObj;
++      int usage;
++      int i;
++      int pushout;
+ 
+-      if (!backwardScanning) {
+-              /* Handle YAFFS1 forward scanning case
+-               * For YAFFS1 we always do the deletion
+-               */
++      if (dev->param.n_caches > 0) {
++              /* Try find a non-dirty one... */
+ 
+-      } else {
+-              /* Handle YAFFS2 case (backward scanning)
+-               * If the shadowed object exists then ignore.
+-               */
+-              if (yaffs_FindObjectByNumber(dev, objId))
+-                      return;
+-      }
++              cache = yaffs_grab_chunk_worker(dev);
+ 
+-      /* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc.
+-       * We put it in unlinked dir to be cleaned up after the scanning
+-       */
+-      obj =
+-          yaffs_FindOrCreateObjectByNumber(dev, objId,
+-                                           YAFFS_OBJECT_TYPE_FILE);
+-      if (!obj)
+-              return;
+-      yaffs_AddObjectToDirectory(dev->unlinkedDir, obj);
+-      obj->variant.fileVariant.shrinkSize = 0;
+-      obj->valid = 1;         /* So that we don't read any other info for this file */
++              if (!cache) {
++                      /* They were all dirty, find the last recently used object and flush
++                       * its cache, then  find again.
++                       * NB what's here is not very accurate, we actually flush the object
++                       * the last recently used page.
++                       */
+ 
+-}
++                      /* With locking we can't assume we can use entry zero */
+ 
+-typedef struct {
+-      int seq;
+-      int block;
+-} yaffs_BlockIndex;
++                      theObj = NULL;
++                      usage = -1;
++                      cache = NULL;
++                      pushout = -1;
+ 
++                      for (i = 0; i < dev->param.n_caches; i++) {
++                              if (dev->cache[i].object &&
++                                  !dev->cache[i].locked &&
++                                  (dev->cache[i].last_use < usage || !cache)) {
++                                      usage = dev->cache[i].last_use;
++                                      theObj = dev->cache[i].object;
++                                      cache = &dev->cache[i];
++                                      pushout = i;
++                              }
++                      }
+ 
+-static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList)
+-{
+-      yaffs_Object *hl;
+-      yaffs_Object *in;
++                      if (!cache || cache->dirty) {
++                              /* Flush and try again */
++                              yaffs_flush_file_cache(theObj);
++                              cache = yaffs_grab_chunk_worker(dev);
++                      }
+ 
+-      while (hardList) {
+-              hl = hardList;
+-              hardList = (yaffs_Object *) (hardList->hardLinks.next);
++              }
++              return cache;
++      } else
++              return NULL;
+ 
+-              in = yaffs_FindObjectByNumber(dev,
+-                                            hl->variant.hardLinkVariant.
+-                                            equivalentObjectId);
++}
+ 
+-              if (in) {
+-                      /* Add the hardlink pointers */
+-                      hl->variant.hardLinkVariant.equivalentObject = in;
+-                      ylist_add(&hl->hardLinks, &in->hardLinks);
+-              } else {
+-                      /* Todo Need to report/handle this better.
+-                       * Got a problem... hardlink to a non-existant object
+-                       */
+-                      hl->variant.hardLinkVariant.equivalentObject = NULL;
+-                      YINIT_LIST_HEAD(&hl->hardLinks);
++/* Find a cached chunk */
++static yaffs_cache_t *yaffs_find_chunk_cache(const yaffs_obj_t *obj,
++                                            int chunk_id)
++{
++      yaffs_dev_t *dev = obj->my_dev;
++      int i;
++      if (dev->param.n_caches > 0) {
++              for (i = 0; i < dev->param.n_caches; i++) {
++                      if (dev->cache[i].object == obj &&
++                          dev->cache[i].chunk_id == chunk_id) {
++                              dev->cache_hits++;
+ 
++                              return &dev->cache[i];
++                      }
+               }
+       }
++      return NULL;
+ }
+ 
++/* Mark the chunk for the least recently used algorithym */
++static void yaffs_use_cache(yaffs_dev_t *dev, yaffs_cache_t *cache,
++                              int isAWrite)
++{
++
++      if (dev->param.n_caches > 0) {
++              if (dev->cache_last_use < 0 || dev->cache_last_use > 100000000) {
++                      /* Reset the cache usages */
++                      int i;
++                      for (i = 1; i < dev->param.n_caches; i++)
++                              dev->cache[i].last_use = 0;
+ 
++                      dev->cache_last_use = 0;
++              }
+ 
++              dev->cache_last_use++;
+ 
++              cache->last_use = dev->cache_last_use;
+ 
+-static int ybicmp(const void *a, const void *b)
+-{
+-      register int aseq = ((yaffs_BlockIndex *)a)->seq;
+-      register int bseq = ((yaffs_BlockIndex *)b)->seq;
+-      register int ablock = ((yaffs_BlockIndex *)a)->block;
+-      register int bblock = ((yaffs_BlockIndex *)b)->block;
+-      if (aseq == bseq)
+-              return ablock - bblock;
+-      else
+-              return aseq - bseq;
++              if (isAWrite)
++                      cache->dirty = 1;
++      }
+ }
+ 
++/* Invalidate a single cache page.
++ * Do this when a whole page gets written,
++ * ie the short cache for this page is no longer valid.
++ */
++static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id)
++{
++      if (object->my_dev->param.n_caches > 0) {
++              yaffs_cache_t *cache = yaffs_find_chunk_cache(object, chunk_id);
+ 
+-struct yaffs_ShadowFixerStruct {
+-      int objectId;
+-      int shadowedId;
+-      struct yaffs_ShadowFixerStruct *next;
+-};
+-
++              if (cache)
++                      cache->object = NULL;
++      }
++}
+ 
+-static void yaffs_StripDeletedObjects(yaffs_Device *dev)
++/* Invalidate all the cache pages associated with this object
++ * Do this whenever ther file is deleted or resized.
++ */
++static void yaffs_invalidate_whole_cache(yaffs_obj_t *in)
+ {
+-      /*
+-      *  Sort out state of unlinked and deleted objects after scanning.
+-      */
+-      struct ylist_head *i;
+-      struct ylist_head *n;
+-      yaffs_Object *l;
++      int i;
++      yaffs_dev_t *dev = in->my_dev;
+ 
+-      /* Soft delete all the unlinked files */
+-      ylist_for_each_safe(i, n,
+-              &dev->unlinkedDir->variant.directoryVariant.children) {
+-              if (i) {
+-                      l = ylist_entry(i, yaffs_Object, siblings);
+-                      yaffs_DeleteObject(l);
++      if (dev->param.n_caches > 0) {
++              /* Invalidate it. */
++              for (i = 0; i < dev->param.n_caches; i++) {
++                      if (dev->cache[i].object == in)
++                              dev->cache[i].object = NULL;
+               }
+       }
++}
+ 
+-      ylist_for_each_safe(i, n,
+-              &dev->deletedDir->variant.directoryVariant.children) {
+-              if (i) {
+-                      l = ylist_entry(i, yaffs_Object, siblings);
+-                      yaffs_DeleteObject(l);
+-              }
+-      }
+ 
+-}
++/*--------------------- File read/write ------------------------
++ * Read and write have very similar structures.
++ * In general the read/write has three parts to it
++ * An incomplete chunk to start with (if the read/write is not chunk-aligned)
++ * Some complete chunks
++ * An incomplete chunk to end off with
++ *
++ * Curve-balls: the first chunk might also be the last chunk.
++ */
+ 
+-static int yaffs_Scan(yaffs_Device *dev)
++int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset,
++                      int n_bytes)
+ {
+-      yaffs_ExtendedTags tags;
+-      int blk;
+-      int blockIterator;
+-      int startIterator;
+-      int endIterator;
+-      int result;
+ 
+       int chunk;
+-      int c;
+-      int deleted;
+-      yaffs_BlockState state;
+-      yaffs_Object *hardList = NULL;
+-      yaffs_BlockInfo *bi;
+-      __u32 sequenceNumber;
+-      yaffs_ObjectHeader *oh;
+-      yaffs_Object *in;
+-      yaffs_Object *parent;
++      __u32 start;
++      int nToCopy;
++      int n = n_bytes;
++      int nDone = 0;
++      yaffs_cache_t *cache;
+ 
+-      int alloc_failed = 0;
++      yaffs_dev_t *dev;
+ 
+-      struct yaffs_ShadowFixerStruct *shadowFixerList = NULL;
++      dev = in->my_dev;
+ 
++      while (n > 0) {
++              /* chunk = offset / dev->data_bytes_per_chunk + 1; */
++              /* start = offset % dev->data_bytes_per_chunk; */
++              yaffs_addr_to_chunk(dev, offset, &chunk, &start);
++              chunk++;
+ 
+-      __u8 *chunkData;
++              /* OK now check for the curveball where the start and end are in
++               * the same chunk.
++               */
++              if ((start + n) < dev->data_bytes_per_chunk)
++                      nToCopy = n;
++              else
++                      nToCopy = dev->data_bytes_per_chunk - start;
+ 
++              cache = yaffs_find_chunk_cache(in, chunk);
+ 
++              /* If the chunk is already in the cache or it is less than a whole chunk
++               * or we're using inband tags then use the cache (if there is caching)
++               * else bypass the cache.
++               */
++              if (cache || nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) {
++                      if (dev->param.n_caches > 0) {
+ 
+-      T(YAFFS_TRACE_SCAN,
+-        (TSTR("yaffs_Scan starts  intstartblk %d intendblk %d..." TENDSTR),
+-         dev->internalStartBlock, dev->internalEndBlock));
++                              /* If we can't find the data in the cache, then load it up. */
+ 
+-      chunkData = yaffs_GetTempBuffer(dev, __LINE__);
++                              if (!cache) {
++                                      cache = yaffs_grab_chunk_cache(in->my_dev);
++                                      cache->object = in;
++                                      cache->chunk_id = chunk;
++                                      cache->dirty = 0;
++                                      cache->locked = 0;
++                                      yaffs_rd_data_obj(in, chunk,
++                                                                    cache->
++                                                                    data);
++                                      cache->n_bytes = 0;
++                              }
+ 
+-      dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
++                              yaffs_use_cache(dev, cache, 0);
+ 
+-      /* Scan all the blocks to determine their state */
+-      for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) {
+-              bi = yaffs_GetBlockInfo(dev, blk);
+-              yaffs_ClearChunkBits(dev, blk);
+-              bi->pagesInUse = 0;
+-              bi->softDeletions = 0;
++                              cache->locked = 1;
+ 
+-              yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber);
+ 
+-              bi->blockState = state;
+-              bi->sequenceNumber = sequenceNumber;
++                              memcpy(buffer, &cache->data[start], nToCopy);
+ 
+-              if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK)
+-                      bi->blockState = state = YAFFS_BLOCK_STATE_DEAD;
++                              cache->locked = 0;
++                      } else {
++                              /* Read into the local buffer then copy..*/
+ 
+-              T(YAFFS_TRACE_SCAN_DEBUG,
+-                (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
+-                 state, sequenceNumber));
++                              __u8 *localBuffer =
++                                  yaffs_get_temp_buffer(dev, __LINE__);
++                              yaffs_rd_data_obj(in, chunk,
++                                                            localBuffer);
+ 
+-              if (state == YAFFS_BLOCK_STATE_DEAD) {
+-                      T(YAFFS_TRACE_BAD_BLOCKS,
+-                        (TSTR("block %d is bad" TENDSTR), blk));
+-              } else if (state == YAFFS_BLOCK_STATE_EMPTY) {
+-                      T(YAFFS_TRACE_SCAN_DEBUG,
+-                        (TSTR("Block empty " TENDSTR)));
+-                      dev->nErasedBlocks++;
+-                      dev->nFreeChunks += dev->nChunksPerBlock;
+-              }
+-      }
++                              memcpy(buffer, &localBuffer[start], nToCopy);
+ 
+-      startIterator = dev->internalStartBlock;
+-      endIterator = dev->internalEndBlock;
+ 
+-      /* For each block.... */
+-      for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator;
+-           blockIterator++) {
++                              yaffs_release_temp_buffer(dev, localBuffer,
++                                                      __LINE__);
++                      }
+ 
+-              YYIELD();
++              } else {
+ 
+-              YYIELD();
++                      /* A full chunk. Read directly into the supplied buffer. */
++                      yaffs_rd_data_obj(in, chunk, buffer);
+ 
+-              blk = blockIterator;
++              }
+ 
+-              bi = yaffs_GetBlockInfo(dev, blk);
+-              state = bi->blockState;
++              n -= nToCopy;
++              offset += nToCopy;
++              buffer += nToCopy;
++              nDone += nToCopy;
+ 
+-              deleted = 0;
++      }
+ 
+-              /* For each chunk in each block that needs scanning....*/
+-              for (c = 0; !alloc_failed && c < dev->nChunksPerBlock &&
+-                   state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) {
+-                      /* Read the tags and decide what to do */
+-                      chunk = blk * dev->nChunksPerBlock + c;
++      return nDone;
++}
+ 
+-                      result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
+-                                                      &tags);
++int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset,
++                      int n_bytes, int write_trhrough)
++{
+ 
+-                      /* Let's have a good look at this chunk... */
++      int chunk;
++      __u32 start;
++      int nToCopy;
++      int n = n_bytes;
++      int nDone = 0;
++      int nToWriteBack;
++      int startOfWrite = offset;
++      int chunkWritten = 0;
++      __u32 n_bytesRead;
++      __u32 chunkStart;
+ 
+-                      if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED || tags.chunkDeleted) {
+-                              /* YAFFS1 only...
+-                               * A deleted chunk
+-                               */
+-                              deleted++;
+-                              dev->nFreeChunks++;
+-                              /*T((" %d %d deleted\n",blk,c)); */
+-                      } else if (!tags.chunkUsed) {
+-                              /* An unassigned chunk in the block
+-                               * This means that either the block is empty or
+-                               * this is the one being allocated from
+-                               */
++      yaffs_dev_t *dev;
+ 
+-                              if (c == 0) {
+-                                      /* We're looking at the first chunk in the block so the block is unused */
+-                                      state = YAFFS_BLOCK_STATE_EMPTY;
+-                                      dev->nErasedBlocks++;
+-                              } else {
+-                                      /* this is the block being allocated from */
+-                                      T(YAFFS_TRACE_SCAN,
+-                                        (TSTR
+-                                         (" Allocating from %d %d" TENDSTR),
+-                                         blk, c));
+-                                      state = YAFFS_BLOCK_STATE_ALLOCATING;
+-                                      dev->allocationBlock = blk;
+-                                      dev->allocationPage = c;
+-                                      dev->allocationBlockFinder = blk;
+-                                      /* Set it to here to encourage the allocator to go forth from here. */
++      dev = in->my_dev;
+ 
+-                              }
++      while (n > 0 && chunkWritten >= 0) {
++              yaffs_addr_to_chunk(dev, offset, &chunk, &start);
+ 
+-                              dev->nFreeChunks += (dev->nChunksPerBlock - c);
+-                      } else if (tags.chunkId > 0) {
+-                              /* chunkId > 0 so it is a data chunk... */
+-                              unsigned int endpos;
+-
+-                              yaffs_SetChunkBit(dev, blk, c);
+-                              bi->pagesInUse++;
+-
+-                              in = yaffs_FindOrCreateObjectByNumber(dev,
+-                                                                    tags.
+-                                                                    objectId,
+-                                                                    YAFFS_OBJECT_TYPE_FILE);
+-                              /* PutChunkIntoFile checks for a clash (two data chunks with
+-                               * the same chunkId).
+-                               */
++              if (chunk * dev->data_bytes_per_chunk + start != offset ||
++                              start >= dev->data_bytes_per_chunk) {
++                      T(YAFFS_TRACE_ERROR, (
++                         TSTR("AddrToChunk of offset %d gives chunk %d start %d"
++                         TENDSTR),
++                         (int)offset, chunk, start));
++              }
++              chunk++; /* File pos to chunk in file offset */
+ 
+-                              if (!in)
+-                                      alloc_failed = 1;
++              /* OK now check for the curveball where the start and end are in
++               * the same chunk.
++               */
+ 
+-                              if (in) {
+-                                      if (!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, 1))
+-                                              alloc_failed = 1;
+-                              }
++              if ((start + n) < dev->data_bytes_per_chunk) {
++                      nToCopy = n;
+ 
+-                              endpos =
+-                                  (tags.chunkId - 1) * dev->nDataBytesPerChunk +
+-                                  tags.byteCount;
+-                              if (in &&
+-                                  in->variantType == YAFFS_OBJECT_TYPE_FILE
+-                                  && in->variant.fileVariant.scannedFileSize <
+-                                  endpos) {
+-                                      in->variant.fileVariant.
+-                                          scannedFileSize = endpos;
+-                                      if (!dev->useHeaderFileSize) {
+-                                              in->variant.fileVariant.
+-                                                  fileSize =
+-                                                  in->variant.fileVariant.
+-                                                  scannedFileSize;
+-                                      }
++                      /* Now folks, to calculate how many bytes to write back....
++                       * If we're overwriting and not writing to then end of file then
++                       * we need to write back as much as was there before.
++                       */
+ 
+-                              }
+-                              /* T((" %d %d data %d %d\n",blk,c,tags.objectId,tags.chunkId));   */
+-                      } else {
+-                              /* chunkId == 0, so it is an ObjectHeader.
+-                               * Thus, we read in the object header and make the object
+-                               */
+-                              yaffs_SetChunkBit(dev, blk, c);
+-                              bi->pagesInUse++;
++                      chunkStart = ((chunk - 1) * dev->data_bytes_per_chunk);
+ 
+-                              result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk,
+-                                                              chunkData,
+-                                                              NULL);
+-
+-                              oh = (yaffs_ObjectHeader *) chunkData;
+-
+-                              in = yaffs_FindObjectByNumber(dev,
+-                                                            tags.objectId);
+-                              if (in && in->variantType != oh->type) {
+-                                      /* This should not happen, but somehow
+-                                       * Wev'e ended up with an objectId that has been reused but not yet
+-                                       * deleted, and worse still it has changed type. Delete the old object.
+-                                       */
++                      if (chunkStart > in->variant.file_variant.file_size)
++                              n_bytesRead = 0; /* Past end of file */
++                      else
++                              n_bytesRead = in->variant.file_variant.file_size - chunkStart;
+ 
+-                                      yaffs_DeleteObject(in);
++                      if (n_bytesRead > dev->data_bytes_per_chunk)
++                              n_bytesRead = dev->data_bytes_per_chunk;
+ 
+-                                      in = 0;
+-                              }
++                      nToWriteBack =
++                          (n_bytesRead >
++                           (start + n)) ? n_bytesRead : (start + n);
+ 
+-                              in = yaffs_FindOrCreateObjectByNumber(dev,
+-                                                                    tags.
+-                                                                    objectId,
+-                                                                    oh->type);
+-
+-                              if (!in)
+-                                      alloc_failed = 1;
+-
+-                              if (in && oh->shadowsObject > 0) {
+-
+-                                      struct yaffs_ShadowFixerStruct *fixer;
+-                                      fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct));
+-                                      if (fixer) {
+-                                              fixer->next = shadowFixerList;
+-                                              shadowFixerList = fixer;
+-                                              fixer->objectId = tags.objectId;
+-                                              fixer->shadowedId = oh->shadowsObject;
+-                                      }
++                      if (nToWriteBack < 0 || nToWriteBack > dev->data_bytes_per_chunk)
++                              YBUG();
++
++              } else {
++                      nToCopy = dev->data_bytes_per_chunk - start;
++                      nToWriteBack = dev->data_bytes_per_chunk;
++              }
++
++              if (nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) {
++                      /* An incomplete start or end chunk (or maybe both start and end chunk),
++                       * or we're using inband tags, so we want to use the cache buffers.
++                       */
++                      if (dev->param.n_caches > 0) {
++                              yaffs_cache_t *cache;
++                              /* If we can't find the data in the cache, then load the cache */
++                              cache = yaffs_find_chunk_cache(in, chunk);
+ 
++                              if (!cache
++                                  && yaffs_check_alloc_available(dev, 1)) {
++                                      cache = yaffs_grab_chunk_cache(dev);
++                                      cache->object = in;
++                                      cache->chunk_id = chunk;
++                                      cache->dirty = 0;
++                                      cache->locked = 0;
++                                      yaffs_rd_data_obj(in, chunk,
++                                                                    cache->data);
++                              } else if (cache &&
++                                      !cache->dirty &&
++                                      !yaffs_check_alloc_available(dev, 1)) {
++                                      /* Drop the cache if it was a read cache item and
++                                       * no space check has been made for it.
++                                       */
++                                       cache = NULL;
+                               }
+ 
+-                              if (in && in->valid) {
+-                                      /* We have already filled this one. We have a duplicate and need to resolve it. */
++                              if (cache) {
++                                      yaffs_use_cache(dev, cache, 1);
++                                      cache->locked = 1;
+ 
+-                                      unsigned existingSerial = in->serial;
+-                                      unsigned newSerial = tags.serialNumber;
+ 
+-                                      if (((existingSerial + 1) & 3) == newSerial) {
+-                                              /* Use new one - destroy the exisiting one */
+-                                              yaffs_DeleteChunk(dev,
+-                                                                in->hdrChunk,
+-                                                                1, __LINE__);
+-                                              in->valid = 0;
+-                                      } else {
+-                                              /* Use existing - destroy this one. */
+-                                              yaffs_DeleteChunk(dev, chunk, 1,
+-                                                                __LINE__);
++                                      memcpy(&cache->data[start], buffer,
++                                             nToCopy);
++
++
++                                      cache->locked = 0;
++                                      cache->n_bytes = nToWriteBack;
++
++                                      if (write_trhrough) {
++                                              chunkWritten =
++                                                  yaffs_wr_data_obj
++                                                  (cache->object,
++                                                   cache->chunk_id,
++                                                   cache->data, cache->n_bytes,
++                                                   1);
++                                              cache->dirty = 0;
+                                       }
++
++                              } else {
++                                      chunkWritten = -1;      /* fail the write */
+                               }
++                      } else {
++                              /* An incomplete start or end chunk (or maybe both start and end chunk)
++                               * Read into the local buffer then copy, then copy over and write back.
++                               */
+ 
+-                              if (in && !in->valid &&
+-                                  (tags.objectId == YAFFS_OBJECTID_ROOT ||
+-                                   tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) {
+-                                      /* We only load some info, don't fiddle with directory structure */
+-                                      in->valid = 1;
+-                                      in->variantType = oh->type;
++                              __u8 *localBuffer =
++                                  yaffs_get_temp_buffer(dev, __LINE__);
+ 
+-                                      in->yst_mode = oh->yst_mode;
+-#ifdef CONFIG_YAFFS_WINCE
+-                                      in->win_atime[0] = oh->win_atime[0];
+-                                      in->win_ctime[0] = oh->win_ctime[0];
+-                                      in->win_mtime[0] = oh->win_mtime[0];
+-                                      in->win_atime[1] = oh->win_atime[1];
+-                                      in->win_ctime[1] = oh->win_ctime[1];
+-                                      in->win_mtime[1] = oh->win_mtime[1];
+-#else
+-                                      in->yst_uid = oh->yst_uid;
+-                                      in->yst_gid = oh->yst_gid;
+-                                      in->yst_atime = oh->yst_atime;
+-                                      in->yst_mtime = oh->yst_mtime;
+-                                      in->yst_ctime = oh->yst_ctime;
+-                                      in->yst_rdev = oh->yst_rdev;
+-#endif
+-                                      in->hdrChunk = chunk;
+-                                      in->serial = tags.serialNumber;
++                              yaffs_rd_data_obj(in, chunk,
++                                                            localBuffer);
+ 
+-                              } else if (in && !in->valid) {
+-                                      /* we need to load this info */
+ 
+-                                      in->valid = 1;
+-                                      in->variantType = oh->type;
+ 
+-                                      in->yst_mode = oh->yst_mode;
+-#ifdef CONFIG_YAFFS_WINCE
+-                                      in->win_atime[0] = oh->win_atime[0];
+-                                      in->win_ctime[0] = oh->win_ctime[0];
+-                                      in->win_mtime[0] = oh->win_mtime[0];
+-                                      in->win_atime[1] = oh->win_atime[1];
+-                                      in->win_ctime[1] = oh->win_ctime[1];
+-                                      in->win_mtime[1] = oh->win_mtime[1];
+-#else
+-                                      in->yst_uid = oh->yst_uid;
+-                                      in->yst_gid = oh->yst_gid;
+-                                      in->yst_atime = oh->yst_atime;
+-                                      in->yst_mtime = oh->yst_mtime;
+-                                      in->yst_ctime = oh->yst_ctime;
+-                                      in->yst_rdev = oh->yst_rdev;
+-#endif
+-                                      in->hdrChunk = chunk;
+-                                      in->serial = tags.serialNumber;
++                              memcpy(&localBuffer[start], buffer, nToCopy);
+ 
+-                                      yaffs_SetObjectName(in, oh->name);
+-                                      in->dirty = 0;
++                              chunkWritten =
++                                  yaffs_wr_data_obj(in, chunk,
++                                                               localBuffer,
++                                                               nToWriteBack,
++                                                               0);
+ 
+-                                      /* directory stuff...
+-                                       * hook up to parent
+-                                       */
++                              yaffs_release_temp_buffer(dev, localBuffer,
++                                                      __LINE__);
+ 
+-                                      parent =
+-                                          yaffs_FindOrCreateObjectByNumber
+-                                          (dev, oh->parentObjectId,
+-                                           YAFFS_OBJECT_TYPE_DIRECTORY);
+-                                      if (!parent)
+-                                              alloc_failed = 1;
+-                                      if (parent && parent->variantType ==
+-                                          YAFFS_OBJECT_TYPE_UNKNOWN) {
+-                                              /* Set up as a directory */
+-                                              parent->variantType =
+-                                                      YAFFS_OBJECT_TYPE_DIRECTORY;
+-                                              YINIT_LIST_HEAD(&parent->variant.
+-                                                              directoryVariant.
+-                                                              children);
+-                                      } else if (!parent || parent->variantType !=
+-                                                 YAFFS_OBJECT_TYPE_DIRECTORY) {
+-                                              /* Hoosterman, another problem....
+-                                               * We're trying to use a non-directory as a directory
+-                                               */
++                      }
+ 
+-                                              T(YAFFS_TRACE_ERROR,
+-                                                (TSTR
+-                                                 ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
+-                                                  TENDSTR)));
+-                                              parent = dev->lostNFoundDir;
+-                                      }
++              } else {
++                      /* A full chunk. Write directly from the supplied buffer. */
+ 
+-                                      yaffs_AddObjectToDirectory(parent, in);
+ 
+-                                      if (0 && (parent == dev->deletedDir ||
+-                                                parent == dev->unlinkedDir)) {
+-                                              in->deleted = 1;        /* If it is unlinked at start up then it wants deleting */
+-                                              dev->nDeletedFiles++;
+-                                      }
+-                                      /* Note re hardlinks.
+-                                       * Since we might scan a hardlink before its equivalent object is scanned
+-                                       * we put them all in a list.
+-                                       * After scanning is complete, we should have all the objects, so we run through this
+-                                       * list and fix up all the chains.
+-                                       */
+ 
+-                                      switch (in->variantType) {
+-                                      case YAFFS_OBJECT_TYPE_UNKNOWN:
+-                                              /* Todo got a problem */
+-                                              break;
+-                                      case YAFFS_OBJECT_TYPE_FILE:
+-                                              if (dev->useHeaderFileSize)
+-
+-                                                      in->variant.fileVariant.
+-                                                          fileSize =
+-                                                          oh->fileSize;
+-
+-                                              break;
+-                                      case YAFFS_OBJECT_TYPE_HARDLINK:
+-                                              in->variant.hardLinkVariant.
+-                                                      equivalentObjectId =
+-                                                      oh->equivalentObjectId;
+-                                              in->hardLinks.next =
+-                                                      (struct ylist_head *)
+-                                                      hardList;
+-                                              hardList = in;
+-                                              break;
+-                                      case YAFFS_OBJECT_TYPE_DIRECTORY:
+-                                              /* Do nothing */
+-                                              break;
+-                                      case YAFFS_OBJECT_TYPE_SPECIAL:
+-                                              /* Do nothing */
+-                                              break;
+-                                      case YAFFS_OBJECT_TYPE_SYMLINK:
+-                                              in->variant.symLinkVariant.alias =
+-                                                  yaffs_CloneString(oh->alias);
+-                                              if (!in->variant.symLinkVariant.alias)
+-                                                      alloc_failed = 1;
+-                                              break;
+-                                      }
++                      chunkWritten =
++                          yaffs_wr_data_obj(in, chunk, buffer,
++                                                       dev->data_bytes_per_chunk,
++                                                       0);
+ 
+-/*
+-                                      if (parent == dev->deletedDir) {
+-                                              yaffs_DestroyObject(in);
+-                                              bi->hasShrinkHeader = 1;
+-                                      }
+-*/
+-                              }
+-                      }
++                      /* Since we've overwritten the cached data, we better invalidate it. */
++                      yaffs_invalidate_chunk_cache(in, chunk);
+               }
+ 
+-              if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
+-                      /* If we got this far while scanning, then the block is fully allocated.*/
+-                      state = YAFFS_BLOCK_STATE_FULL;
++              if (chunkWritten >= 0) {
++                      n -= nToCopy;
++                      offset += nToCopy;
++                      buffer += nToCopy;
++                      nDone += nToCopy;
+               }
+ 
+-              bi->blockState = state;
++      }
+ 
+-              /* Now let's see if it was dirty */
+-              if (bi->pagesInUse == 0 &&
+-                  !bi->hasShrinkHeader &&
+-                  bi->blockState == YAFFS_BLOCK_STATE_FULL) {
+-                      yaffs_BlockBecameDirty(dev, blk);
+-              }
++      /* Update file object */
+ 
+-      }
++      if ((startOfWrite + nDone) > in->variant.file_variant.file_size)
++              in->variant.file_variant.file_size = (startOfWrite + nDone);
+ 
++      in->dirty = 1;
+ 
+-      /* Ok, we've done all the scanning.
+-       * Fix up the hard link chains.
+-       * We should now have scanned all the objects, now it's time to add these
+-       * hardlinks.
+-       */
++      return nDone;
++}
+ 
+-      yaffs_HardlinkFixup(dev, hardList);
++int yaffs_wr_file(yaffs_obj_t *in, const __u8 *buffer, loff_t offset,
++                      int n_bytes, int write_trhrough)
++{
++      yaffs2_handle_hole(in,offset);
++      return yaffs_do_file_wr(in,buffer,offset,n_bytes,write_trhrough);
++}
+ 
+-      /* Fix up any shadowed objects */
+-      {
+-              struct yaffs_ShadowFixerStruct *fixer;
+-              yaffs_Object *obj;
+-
+-              while (shadowFixerList) {
+-                      fixer = shadowFixerList;
+-                      shadowFixerList = fixer->next;
+-                      /* Complete the rename transaction by deleting the shadowed object
+-                       * then setting the object header to unshadowed.
+-                       */
+-                      obj = yaffs_FindObjectByNumber(dev, fixer->shadowedId);
+-                      if (obj)
+-                              yaffs_DeleteObject(obj);
+ 
+-                      obj = yaffs_FindObjectByNumber(dev, fixer->objectId);
+ 
+-                      if (obj)
+-                              yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0);
++/* ---------------------- File resizing stuff ------------------ */
+ 
+-                      YFREE(fixer);
+-              }
+-      }
++static void yaffs_prune_chunks(yaffs_obj_t *in, int new_size)
++{
+ 
+-      yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
++      yaffs_dev_t *dev = in->my_dev;
++      int oldFileSize = in->variant.file_variant.file_size;
+ 
+-      if (alloc_failed)
+-              return YAFFS_FAIL;
++      int lastDel = 1 + (oldFileSize - 1) / dev->data_bytes_per_chunk;
++
++      int startDel = 1 + (new_size + dev->data_bytes_per_chunk - 1) /
++          dev->data_bytes_per_chunk;
++      int i;
++      int chunk_id;
+ 
+-      T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR)));
++      /* Delete backwards so that we don't end up with holes if
++       * power is lost part-way through the operation.
++       */
++      for (i = lastDel; i >= startDel; i--) {
++              /* NB this could be optimised somewhat,
++               * eg. could retrieve the tags and write them without
++               * using yaffs_chunk_del
++               */
+ 
++              chunk_id = yaffs_find_del_file_chunk(in, i, NULL);
++              if (chunk_id > 0) {
++                      if (chunk_id <
++                          (dev->internal_start_block * dev->param.chunks_per_block)
++                          || chunk_id >=
++                          ((dev->internal_end_block +
++                            1) * dev->param.chunks_per_block)) {
++                              T(YAFFS_TRACE_ALWAYS,
++                                (TSTR("Found daft chunk_id %d for %d" TENDSTR),
++                                 chunk_id, i));
++                      } else {
++                              in->n_data_chunks--;
++                              yaffs_chunk_del(dev, chunk_id, 1, __LINE__);
++                      }
++              }
++      }
+ 
+-      return YAFFS_OK;
+ }
+ 
+-static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in)
+-{
+-      __u8 *chunkData;
+-      yaffs_ObjectHeader *oh;
+-      yaffs_Device *dev;
+-      yaffs_ExtendedTags tags;
+-      int result;
+-      int alloc_failed = 0;
+ 
+-      if (!in)
+-              return;
++void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size)
++{
++      int newFullChunks;
++      __u32 new_sizeOfPartialChunk;
++      yaffs_dev_t *dev = obj->my_dev;
+ 
+-      dev = in->myDev;
++      yaffs_addr_to_chunk(dev, new_size, &newFullChunks, &new_sizeOfPartialChunk);
+ 
+-#if 0
+-      T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR),
+-              in->objectId,
+-              in->lazyLoaded ? "not yet" : "already"));
+-#endif
++      yaffs_prune_chunks(obj, new_size);
+ 
+-      if (in->lazyLoaded && in->hdrChunk > 0) {
+-              in->lazyLoaded = 0;
+-              chunkData = yaffs_GetTempBuffer(dev, __LINE__);
++      if (new_sizeOfPartialChunk != 0) {
++              int lastChunk = 1 + newFullChunks;
++              __u8 *localBuffer = yaffs_get_temp_buffer(dev, __LINE__);
+ 
+-              result = yaffs_ReadChunkWithTagsFromNAND(dev, in->hdrChunk, chunkData, &tags);
+-              oh = (yaffs_ObjectHeader *) chunkData;
++              /* Got to read and rewrite the last chunk with its new size and zero pad */
++              yaffs_rd_data_obj(obj, lastChunk, localBuffer);
++              memset(localBuffer + new_sizeOfPartialChunk, 0,
++                      dev->data_bytes_per_chunk - new_sizeOfPartialChunk);
+ 
+-              in->yst_mode = oh->yst_mode;
+-#ifdef CONFIG_YAFFS_WINCE
+-              in->win_atime[0] = oh->win_atime[0];
+-              in->win_ctime[0] = oh->win_ctime[0];
+-              in->win_mtime[0] = oh->win_mtime[0];
+-              in->win_atime[1] = oh->win_atime[1];
+-              in->win_ctime[1] = oh->win_ctime[1];
+-              in->win_mtime[1] = oh->win_mtime[1];
+-#else
+-              in->yst_uid = oh->yst_uid;
+-              in->yst_gid = oh->yst_gid;
+-              in->yst_atime = oh->yst_atime;
+-              in->yst_mtime = oh->yst_mtime;
+-              in->yst_ctime = oh->yst_ctime;
+-              in->yst_rdev = oh->yst_rdev;
++              yaffs_wr_data_obj(obj, lastChunk, localBuffer,
++                                           new_sizeOfPartialChunk, 1);
+ 
+-#endif
+-              yaffs_SetObjectName(in, oh->name);
++              yaffs_release_temp_buffer(dev, localBuffer, __LINE__);
++      }
+ 
+-              if (in->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
+-                      in->variant.symLinkVariant.alias =
+-                                                  yaffs_CloneString(oh->alias);
+-                      if (!in->variant.symLinkVariant.alias)
+-                              alloc_failed = 1; /* Not returned to caller */
+-              }
++      obj->variant.file_variant.file_size = new_size;
+ 
+-              yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
+-      }
++      yaffs_prune_tree(dev, &obj->variant.file_variant);
+ }
+ 
+-static int yaffs_ScanBackwards(yaffs_Device *dev)
+-{
+-      yaffs_ExtendedTags tags;
+-      int blk;
+-      int blockIterator;
+-      int startIterator;
+-      int endIterator;
+-      int nBlocksToScan = 0;
+-
+-      int chunk;
+-      int result;
+-      int c;
+-      int deleted;
+-      yaffs_BlockState state;
+-      yaffs_Object *hardList = NULL;
+-      yaffs_BlockInfo *bi;
+-      __u32 sequenceNumber;
+-      yaffs_ObjectHeader *oh;
+-      yaffs_Object *in;
+-      yaffs_Object *parent;
+-      int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
+-      int itsUnlinked;
+-      __u8 *chunkData;
+ 
+-      int fileSize;
+-      int isShrink;
+-      int foundChunksInBlock;
+-      int equivalentObjectId;
+-      int alloc_failed = 0;
++int yaffs_resize_file(yaffs_obj_t *in, loff_t new_size)
++{
++      yaffs_dev_t *dev = in->my_dev;
++      int oldFileSize = in->variant.file_variant.file_size;
+ 
++      yaffs_flush_file_cache(in);
++      yaffs_invalidate_whole_cache(in);
+ 
+-      yaffs_BlockIndex *blockIndex = NULL;
+-      int altBlockIndex = 0;
++      yaffs_check_gc(dev,0);
+ 
+-      if (!dev->isYaffs2) {
+-              T(YAFFS_TRACE_SCAN,
+-                (TSTR("yaffs_ScanBackwards is only for YAFFS2!" TENDSTR)));
++      if (in->variant_type != YAFFS_OBJECT_TYPE_FILE)
+               return YAFFS_FAIL;
+-      }
+ 
+-      T(YAFFS_TRACE_SCAN,
+-        (TSTR
+-         ("yaffs_ScanBackwards starts  intstartblk %d intendblk %d..."
+-          TENDSTR), dev->internalStartBlock, dev->internalEndBlock));
++      if (new_size == oldFileSize)
++              return YAFFS_OK;
++              
++      if(new_size > oldFileSize){
++              yaffs2_handle_hole(in,new_size);
++              in->variant.file_variant.file_size = new_size;
++      } else {
++              /* new_size < oldFileSize */ 
++              yaffs_resize_file_down(in, new_size);
++      } 
+ 
++      /* Write a new object header to reflect the resize.
++       * show we've shrunk the file, if need be
++       * Do this only if the file is not in the deleted directories
++       * and is not shadowed.
++       */
++      if (in->parent &&
++          !in->is_shadowed &&
++          in->parent->obj_id != YAFFS_OBJECTID_UNLINKED &&
++          in->parent->obj_id != YAFFS_OBJECTID_DELETED)
++              yaffs_update_oh(in, NULL, 0, 0, 0, NULL);
+ 
+-      dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
+ 
+-      blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
++      return YAFFS_OK;
++}
+ 
+-      if (!blockIndex) {
+-              blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex));
+-              altBlockIndex = 1;
+-      }
++loff_t yaffs_get_file_size(yaffs_obj_t *obj)
++{
++      YCHAR *alias = NULL;
++      obj = yaffs_get_equivalent_obj(obj);
+ 
+-      if (!blockIndex) {
+-              T(YAFFS_TRACE_SCAN,
+-                (TSTR("yaffs_Scan() could not allocate block index!" TENDSTR)));
+-              return YAFFS_FAIL;
++      switch (obj->variant_type) {
++      case YAFFS_OBJECT_TYPE_FILE:
++              return obj->variant.file_variant.file_size;
++      case YAFFS_OBJECT_TYPE_SYMLINK:
++              alias = obj->variant.symlink_variant.alias;
++              if(!alias)
++                      return 0;
++              return yaffs_strnlen(alias,YAFFS_MAX_ALIAS_LENGTH);
++      default:
++              return 0;
+       }
++}
+ 
+-      dev->blocksInCheckpoint = 0;
+-
+-      chunkData = yaffs_GetTempBuffer(dev, __LINE__);
+-
+-      /* Scan all the blocks to determine their state */
+-      for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) {
+-              bi = yaffs_GetBlockInfo(dev, blk);
+-              yaffs_ClearChunkBits(dev, blk);
+-              bi->pagesInUse = 0;
+-              bi->softDeletions = 0;
+-
+-              yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber);
+ 
+-              bi->blockState = state;
+-              bi->sequenceNumber = sequenceNumber;
+ 
+-              if (bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA)
+-                      bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT;
+-              if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK)
+-                      bi->blockState = state = YAFFS_BLOCK_STATE_DEAD;
++int yaffs_flush_file(yaffs_obj_t *in, int update_time, int data_sync)
++{
++      int retVal;
++      if (in->dirty) {
++              yaffs_flush_file_cache(in);
++              if(data_sync) /* Only sync data */
++                      retVal=YAFFS_OK;
++              else {
++                      if (update_time) {
++#ifdef CONFIG_YAFFS_WINCE
++                              yfsd_win_file_time_now(in->win_mtime);
++#else
+ 
+-              T(YAFFS_TRACE_SCAN_DEBUG,
+-                (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
+-                 state, sequenceNumber));
++                              in->yst_mtime = Y_CURRENT_TIME;
+ 
++#endif
++                      }
+ 
+-              if (state == YAFFS_BLOCK_STATE_CHECKPOINT) {
+-                      dev->blocksInCheckpoint++;
++                      retVal = (yaffs_update_oh(in, NULL, 0, 0, 0, NULL) >=
++                              0) ? YAFFS_OK : YAFFS_FAIL;
++              }
++      } else {
++              retVal = YAFFS_OK;
++      }
+ 
+-              } else if (state == YAFFS_BLOCK_STATE_DEAD) {
+-                      T(YAFFS_TRACE_BAD_BLOCKS,
+-                        (TSTR("block %d is bad" TENDSTR), blk));
+-              } else if (state == YAFFS_BLOCK_STATE_EMPTY) {
+-                      T(YAFFS_TRACE_SCAN_DEBUG,
+-                        (TSTR("Block empty " TENDSTR)));
+-                      dev->nErasedBlocks++;
+-                      dev->nFreeChunks += dev->nChunksPerBlock;
+-              } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
++      return retVal;
+ 
+-                      /* Determine the highest sequence number */
+-                      if (sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
+-                          sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
++}
+ 
+-                              blockIndex[nBlocksToScan].seq = sequenceNumber;
+-                              blockIndex[nBlocksToScan].block = blk;
++static int yaffs_generic_obj_del(yaffs_obj_t *in)
++{
+ 
+-                              nBlocksToScan++;
++      /* First off, invalidate the file's data in the cache, without flushing. */
++      yaffs_invalidate_whole_cache(in);
+ 
+-                              if (sequenceNumber >= dev->sequenceNumber)
+-                                      dev->sequenceNumber = sequenceNumber;
+-                      } else {
+-                              /* TODO: Nasty sequence number! */
+-                              T(YAFFS_TRACE_SCAN,
+-                                (TSTR
+-                                 ("Block scanning block %d has bad sequence number %d"
+-                                  TENDSTR), blk, sequenceNumber));
++      if (in->my_dev->param.is_yaffs2 && (in->parent != in->my_dev->del_dir)) {
++              /* Move to the unlinked directory so we have a record that it was deleted. */
++              yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0, 0);
+ 
+-                      }
+-              }
+       }
+ 
+-      T(YAFFS_TRACE_SCAN,
+-      (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan));
++      yaffs_remove_obj_from_dir(in);
++      yaffs_chunk_del(in->my_dev, in->hdr_chunk, 1, __LINE__);
++      in->hdr_chunk = 0;
+ 
++      yaffs_free_obj(in);
++      return YAFFS_OK;
+ 
++}
+ 
+-      YYIELD();
++/* yaffs_del_file deletes the whole file data
++ * and the inode associated with the file.
++ * It does not delete the links associated with the file.
++ */
++static int yaffs_unlink_file_if_needed(yaffs_obj_t *in)
++{
+ 
+-      /* Sort the blocks */
+-#ifndef CONFIG_YAFFS_USE_OWN_SORT
+-      {
+-              /* Use qsort now. */
+-              yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), ybicmp);
+-      }
+-#else
+-      {
+-              /* Dungy old bubble sort... */
++      int retVal;
++      int immediateDeletion = 0;
++      yaffs_dev_t *dev = in->my_dev;
+ 
+-              yaffs_BlockIndex temp;
+-              int i;
+-              int j;
++      if (!in->my_inode)
++              immediateDeletion = 1;
+ 
+-              for (i = 0; i < nBlocksToScan; i++)
+-                      for (j = i + 1; j < nBlocksToScan; j++)
+-                              if (blockIndex[i].seq > blockIndex[j].seq) {
+-                                      temp = blockIndex[j];
+-                                      blockIndex[j] = blockIndex[i];
+-                                      blockIndex[i] = temp;
+-                              }
++      if (immediateDeletion) {
++              retVal =
++                  yaffs_change_obj_name(in, in->my_dev->del_dir,
++                                         _Y("deleted"), 0, 0);
++              T(YAFFS_TRACE_TRACING,
++                (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
++                 in->obj_id));
++              in->deleted = 1;
++              in->my_dev->n_deleted_files++;
++              if (dev->param.disable_soft_del || dev->param.is_yaffs2)
++                      yaffs_resize_file(in, 0);
++              yaffs_soft_del_file(in);
++      } else {
++              retVal =
++                  yaffs_change_obj_name(in, in->my_dev->unlinked_dir,
++                                         _Y("unlinked"), 0, 0);
+       }
+-#endif
+ 
+-      YYIELD();
+ 
+-      T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR)));
++      return retVal;
++}
+ 
+-      /* Now scan the blocks looking at the data. */
+-      startIterator = 0;
+-      endIterator = nBlocksToScan - 1;
+-      T(YAFFS_TRACE_SCAN_DEBUG,
+-        (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan));
++int yaffs_del_file(yaffs_obj_t *in)
++{
++      int retVal = YAFFS_OK;
++      int deleted; /* Need to cache value on stack if in is freed */
++      yaffs_dev_t *dev = in->my_dev;
+ 
+-      /* For each block.... backwards */
+-      for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator;
+-                      blockIterator--) {
+-              /* Cooperative multitasking! This loop can run for so
+-                 long that watchdog timers expire. */
+-              YYIELD();
++      if (dev->param.disable_soft_del || dev->param.is_yaffs2)
++              yaffs_resize_file(in, 0);
+ 
+-              /* get the block to scan in the correct order */
+-              blk = blockIndex[blockIterator].block;
++      if (in->n_data_chunks > 0) {
++              /* Use soft deletion if there is data in the file.
++               * That won't be the case if it has been resized to zero.
++               */
++              if (!in->unlinked)
++                      retVal = yaffs_unlink_file_if_needed(in);
+ 
+-              bi = yaffs_GetBlockInfo(dev, blk);
++              deleted = in->deleted;
+ 
++              if (retVal == YAFFS_OK && in->unlinked && !in->deleted) {
++                      in->deleted = 1;
++                      deleted = 1;
++                      in->my_dev->n_deleted_files++;
++                      yaffs_soft_del_file(in);
++              }
++              return deleted ? YAFFS_OK : YAFFS_FAIL;
++      } else {
++              /* The file has no data chunks so we toss it immediately */
++              yaffs_free_tnode(in->my_dev, in->variant.file_variant.top);
++              in->variant.file_variant.top = NULL;
++              yaffs_generic_obj_del(in);
+ 
+-              state = bi->blockState;
++              return YAFFS_OK;
++      }
++}
+ 
+-              deleted = 0;
++static int yaffs_is_non_empty_dir(yaffs_obj_t *obj)
++{
++      return (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) &&
++              !(ylist_empty(&obj->variant.dir_variant.children));
++}
+ 
+-              /* For each chunk in each block that needs scanning.... */
+-              foundChunksInBlock = 0;
+-              for (c = dev->nChunksPerBlock - 1;
+-                   !alloc_failed && c >= 0 &&
+-                   (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
+-                    state == YAFFS_BLOCK_STATE_ALLOCATING); c--) {
+-                      /* Scan backwards...
+-                       * Read the tags and decide what to do
+-                       */
++static int yaffs_del_dir(yaffs_obj_t *obj)
++{
++      /* First check that the directory is empty. */
++      if (yaffs_is_non_empty_dir(obj))
++              return YAFFS_FAIL;
+ 
+-                      chunk = blk * dev->nChunksPerBlock + c;
++      return yaffs_generic_obj_del(obj);
++}
+ 
+-                      result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
+-                                                      &tags);
++static int yaffs_del_symlink(yaffs_obj_t *in)
++{
++      if(in->variant.symlink_variant.alias)
++              YFREE(in->variant.symlink_variant.alias);
++      in->variant.symlink_variant.alias=NULL;
+ 
+-                      /* Let's have a good look at this chunk... */
++      return yaffs_generic_obj_del(in);
++}
+ 
+-                      if (!tags.chunkUsed) {
+-                              /* An unassigned chunk in the block.
+-                               * If there are used chunks after this one, then
+-                               * it is a chunk that was skipped due to failing the erased
+-                               * check. Just skip it so that it can be deleted.
+-                               * But, more typically, We get here when this is an unallocated
+-                               * chunk and his means that either the block is empty or
+-                               * this is the one being allocated from
+-                               */
++static int yaffs_del_link(yaffs_obj_t *in)
++{
++      /* remove this hardlink from the list assocaited with the equivalent
++       * object
++       */
++      ylist_del_init(&in->hard_links);
++      return yaffs_generic_obj_del(in);
++}
+ 
+-                              if (foundChunksInBlock) {
+-                                      /* This is a chunk that was skipped due to failing the erased check */
+-                              } else if (c == 0) {
+-                                      /* We're looking at the first chunk in the block so the block is unused */
+-                                      state = YAFFS_BLOCK_STATE_EMPTY;
+-                                      dev->nErasedBlocks++;
+-                              } else {
+-                                      if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
+-                                          state == YAFFS_BLOCK_STATE_ALLOCATING) {
+-                                              if (dev->sequenceNumber == bi->sequenceNumber) {
+-                                                      /* this is the block being allocated from */
+-
+-                                                      T(YAFFS_TRACE_SCAN,
+-                                                        (TSTR
+-                                                         (" Allocating from %d %d"
+-                                                          TENDSTR), blk, c));
+-
+-                                                      state = YAFFS_BLOCK_STATE_ALLOCATING;
+-                                                      dev->allocationBlock = blk;
+-                                                      dev->allocationPage = c;
+-                                                      dev->allocationBlockFinder = blk;
+-                                              } else {
+-                                                      /* This is a partially written block that is not
+-                                                       * the current allocation block. This block must have
+-                                                       * had a write failure, so set up for retirement.
+-                                                       */
+-
+-                                                       /* bi->needsRetiring = 1; ??? TODO */
+-                                                       bi->gcPrioritise = 1;
+-
+-                                                       T(YAFFS_TRACE_ALWAYS,
+-                                                       (TSTR("Partially written block %d detected" TENDSTR),
+-                                                       blk));
+-                                              }
+-                                      }
+-                              }
++int yaffs_del_obj(yaffs_obj_t *obj)
++{
++int retVal = -1;
++      switch (obj->variant_type) {
++      case YAFFS_OBJECT_TYPE_FILE:
++              retVal = yaffs_del_file(obj);
++              break;
++      case YAFFS_OBJECT_TYPE_DIRECTORY:
++              if(!ylist_empty(&obj->variant.dir_variant.dirty)){
++                      T(YAFFS_TRACE_BACKGROUND, (TSTR("Remove object %d from dirty directories" TENDSTR),obj->obj_id));
++                      ylist_del_init(&obj->variant.dir_variant.dirty);
++              }
++              return yaffs_del_dir(obj);
++              break;
++      case YAFFS_OBJECT_TYPE_SYMLINK:
++              retVal = yaffs_del_symlink(obj);
++              break;
++      case YAFFS_OBJECT_TYPE_HARDLINK:
++              retVal = yaffs_del_link(obj);
++              break;
++      case YAFFS_OBJECT_TYPE_SPECIAL:
++              retVal = yaffs_generic_obj_del(obj);
++              break;
++      case YAFFS_OBJECT_TYPE_UNKNOWN:
++              retVal = 0;
++              break;          /* should not happen. */
++      }
+ 
+-                              dev->nFreeChunks++;
++      return retVal;
++}
+ 
+-                      } else if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED) {
+-                              T(YAFFS_TRACE_SCAN,
+-                                (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR),
+-                                blk, c));
+-
+-                                dev->nFreeChunks++;
+-
+-                      } else if (tags.chunkId > 0) {
+-                              /* chunkId > 0 so it is a data chunk... */
+-                              unsigned int endpos;
+-                              __u32 chunkBase =
+-                                  (tags.chunkId - 1) * dev->nDataBytesPerChunk;
+-
+-                              foundChunksInBlock = 1;
+-
+-
+-                              yaffs_SetChunkBit(dev, blk, c);
+-                              bi->pagesInUse++;
+-
+-                              in = yaffs_FindOrCreateObjectByNumber(dev,
+-                                                                    tags.
+-                                                                    objectId,
+-                                                                    YAFFS_OBJECT_TYPE_FILE);
+-                              if (!in) {
+-                                      /* Out of memory */
+-                                      alloc_failed = 1;
+-                              }
++static int yaffs_unlink_worker(yaffs_obj_t *obj)
++{
+ 
+-                              if (in &&
+-                                  in->variantType == YAFFS_OBJECT_TYPE_FILE
+-                                  && chunkBase <
+-                                  in->variant.fileVariant.shrinkSize) {
+-                                      /* This has not been invalidated by a resize */
+-                                      if (!yaffs_PutChunkIntoFile(in, tags.chunkId,
+-                                                             chunk, -1)) {
+-                                              alloc_failed = 1;
+-                                      }
++      int immediateDeletion = 0;
+ 
+-                                      /* File size is calculated by looking at the data chunks if we have not
+-                                       * seen an object header yet. Stop this practice once we find an object header.
+-                                       */
+-                                      endpos =
+-                                          (tags.chunkId -
+-                                           1) * dev->nDataBytesPerChunk +
+-                                          tags.byteCount;
+-
+-                                      if (!in->valid &&       /* have not got an object header yet */
+-                                          in->variant.fileVariant.
+-                                          scannedFileSize < endpos) {
+-                                              in->variant.fileVariant.
+-                                                  scannedFileSize = endpos;
+-                                              in->variant.fileVariant.
+-                                                  fileSize =
+-                                                  in->variant.fileVariant.
+-                                                  scannedFileSize;
+-                                      }
++      if (!obj->my_inode)
++              immediateDeletion = 1;
+ 
+-                              } else if (in) {
+-                                      /* This chunk has been invalidated by a resize, so delete */
+-                                      yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
++      if(obj)
++              yaffs_update_parent(obj->parent);
+ 
+-                              }
+-                      } else {
+-                              /* chunkId == 0, so it is an ObjectHeader.
+-                               * Thus, we read in the object header and make the object
+-                               */
+-                              foundChunksInBlock = 1;
++      if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) {
++              return yaffs_del_link(obj);
++      } else if (!ylist_empty(&obj->hard_links)) {
++              /* Curve ball: We're unlinking an object that has a hardlink.
++               *
++               * This problem arises because we are not strictly following
++               * The Linux link/inode model.
++               *
++               * We can't really delete the object.
++               * Instead, we do the following:
++               * - Select a hardlink.
++               * - Unhook it from the hard links
++               * - Move it from its parent directory (so that the rename can work)
++               * - Rename the object to the hardlink's name.
++               * - Delete the hardlink
++               */
+ 
+-                              yaffs_SetChunkBit(dev, blk, c);
+-                              bi->pagesInUse++;
++              yaffs_obj_t *hl;
++              yaffs_obj_t *parent;
++              int retVal;
++              YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
+ 
+-                              oh = NULL;
+-                              in = NULL;
++              hl = ylist_entry(obj->hard_links.next, yaffs_obj_t, hard_links);
+ 
+-                              if (tags.extraHeaderInfoAvailable) {
+-                                      in = yaffs_FindOrCreateObjectByNumber
+-                                          (dev, tags.objectId,
+-                                           tags.extraObjectType);
+-                                      if (!in)
+-                                              alloc_failed = 1;
+-                              }
++              yaffs_get_obj_name(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
++              parent = hl->parent;
+ 
+-                              if (!in ||
+-#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD
+-                                  !in->valid ||
+-#endif
+-                                  tags.extraShadows ||
+-                                  (!in->valid &&
+-                                  (tags.objectId == YAFFS_OBJECTID_ROOT ||
+-                                   tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))) {
+-
+-                                      /* If we don't have  valid info then we need to read the chunk
+-                                       * TODO In future we can probably defer reading the chunk and
+-                                       * living with invalid data until needed.
+-                                       */
++              ylist_del_init(&hl->hard_links);
+ 
+-                                      result = yaffs_ReadChunkWithTagsFromNAND(dev,
+-                                                                      chunk,
+-                                                                      chunkData,
+-                                                                      NULL);
+-
+-                                      oh = (yaffs_ObjectHeader *) chunkData;
+-
+-                                      if (dev->inbandTags) {
+-                                              /* Fix up the header if they got corrupted by inband tags */
+-                                              oh->shadowsObject = oh->inbandShadowsObject;
+-                                              oh->isShrink = oh->inbandIsShrink;
+-                                      }
++              yaffs_add_obj_to_dir(obj->my_dev->unlinked_dir, hl);
+ 
+-                                      if (!in) {
+-                                              in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type);
+-                                              if (!in)
+-                                                      alloc_failed = 1;
+-                                      }
++              retVal = yaffs_change_obj_name(obj,parent, name, 0, 0);
+ 
+-                              }
++              if (retVal == YAFFS_OK)
++                      retVal = yaffs_generic_obj_del(hl);
+ 
+-                              if (!in) {
+-                                      /* TODO Hoosterman we have a problem! */
+-                                      T(YAFFS_TRACE_ERROR,
+-                                        (TSTR
+-                                         ("yaffs tragedy: Could not make object for object  %d at chunk %d during scan"
+-                                          TENDSTR), tags.objectId, chunk));
+-                                      continue;
+-                              }
++              return retVal;
+ 
+-                              if (in->valid) {
+-                                      /* We have already filled this one.
+-                                       * We have a duplicate that will be discarded, but
+-                                       * we first have to suck out resize info if it is a file.
+-                                       */
++      } else if (immediateDeletion) {
++              switch (obj->variant_type) {
++              case YAFFS_OBJECT_TYPE_FILE:
++                      return yaffs_del_file(obj);
++                      break;
++              case YAFFS_OBJECT_TYPE_DIRECTORY:
++                      ylist_del_init(&obj->variant.dir_variant.dirty);
++                      return yaffs_del_dir(obj);
++                      break;
++              case YAFFS_OBJECT_TYPE_SYMLINK:
++                      return yaffs_del_symlink(obj);
++                      break;
++              case YAFFS_OBJECT_TYPE_SPECIAL:
++                      return yaffs_generic_obj_del(obj);
++                      break;
++              case YAFFS_OBJECT_TYPE_HARDLINK:
++              case YAFFS_OBJECT_TYPE_UNKNOWN:
++              default:
++                      return YAFFS_FAIL;
++              }
++      } else if(yaffs_is_non_empty_dir(obj))
++              return YAFFS_FAIL;
++      else
++              return yaffs_change_obj_name(obj, obj->my_dev->unlinked_dir,
++                                         _Y("unlinked"), 0, 0);
++}
+ 
+-                                      if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) &&
+-                                           ((oh &&
+-                                             oh->type == YAFFS_OBJECT_TYPE_FILE) ||
+-                                            (tags.extraHeaderInfoAvailable  &&
+-                                             tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))) {
+-                                              __u32 thisSize =
+-                                                  (oh) ? oh->fileSize : tags.
+-                                                  extraFileLength;
+-                                              __u32 parentObjectId =
+-                                                  (oh) ? oh->
+-                                                  parentObjectId : tags.
+-                                                  extraParentObjectId;
+-
+-
+-                                              isShrink =
+-                                                  (oh) ? oh->isShrink : tags.
+-                                                  extraIsShrinkHeader;
+ 
+-                                              /* If it is deleted (unlinked at start also means deleted)
+-                                               * we treat the file size as being zeroed at this point.
+-                                               */
+-                                              if (parentObjectId ==
+-                                                  YAFFS_OBJECTID_DELETED
+-                                                  || parentObjectId ==
+-                                                  YAFFS_OBJECTID_UNLINKED) {
+-                                                      thisSize = 0;
+-                                                      isShrink = 1;
+-                                              }
++static int yaffs_unlink_obj(yaffs_obj_t *obj)
++{
+ 
+-                                              if (isShrink &&
+-                                                  in->variant.fileVariant.
+-                                                  shrinkSize > thisSize) {
+-                                                      in->variant.fileVariant.
+-                                                          shrinkSize =
+-                                                          thisSize;
+-                                              }
++      if (obj && obj->unlink_allowed)
++              return yaffs_unlink_worker(obj);
+ 
+-                                              if (isShrink)
+-                                                      bi->hasShrinkHeader = 1;
++      return YAFFS_FAIL;
+ 
+-                                      }
+-                                      /* Use existing - destroy this one. */
+-                                      yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
++}
++int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name)
++{
++      yaffs_obj_t *obj;
+ 
+-                              }
++      obj = yaffs_find_by_name(dir, name);
++      return yaffs_unlink_obj(obj);
++}
+ 
+-                              if (!in->valid && in->variantType !=
+-                                  (oh ? oh->type : tags.extraObjectType))
+-                                      T(YAFFS_TRACE_ERROR, (
+-                                              TSTR("yaffs tragedy: Bad object type, "
+-                                          TCONT("%d != %d, for object %d at chunk ")
+-                                          TCONT("%d during scan")
+-                                              TENDSTR), oh ?
+-                                          oh->type : tags.extraObjectType,
+-                                          in->variantType, tags.objectId,
+-                                          chunk));
+-
+-                              if (!in->valid &&
+-                                  (tags.objectId == YAFFS_OBJECTID_ROOT ||
+-                                   tags.objectId ==
+-                                   YAFFS_OBJECTID_LOSTNFOUND)) {
+-                                      /* We only load some info, don't fiddle with directory structure */
+-                                      in->valid = 1;
++/*----------------------- Initialisation Scanning ---------------------- */
+ 
+-                                      if (oh) {
+-                                              in->variantType = oh->type;
++void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id,
++                              int backward_scanning)
++{
++      yaffs_obj_t *obj;
+ 
+-                                              in->yst_mode = oh->yst_mode;
+-#ifdef CONFIG_YAFFS_WINCE
+-                                              in->win_atime[0] = oh->win_atime[0];
+-                                              in->win_ctime[0] = oh->win_ctime[0];
+-                                              in->win_mtime[0] = oh->win_mtime[0];
+-                                              in->win_atime[1] = oh->win_atime[1];
+-                                              in->win_ctime[1] = oh->win_ctime[1];
+-                                              in->win_mtime[1] = oh->win_mtime[1];
+-#else
+-                                              in->yst_uid = oh->yst_uid;
+-                                              in->yst_gid = oh->yst_gid;
+-                                              in->yst_atime = oh->yst_atime;
+-                                              in->yst_mtime = oh->yst_mtime;
+-                                              in->yst_ctime = oh->yst_ctime;
+-                                              in->yst_rdev = oh->yst_rdev;
++      if (!backward_scanning) {
++              /* Handle YAFFS1 forward scanning case
++               * For YAFFS1 we always do the deletion
++               */
+ 
+-#endif
+-                                      } else {
+-                                              in->variantType = tags.extraObjectType;
+-                                              in->lazyLoaded = 1;
+-                                      }
++      } else {
++              /* Handle YAFFS2 case (backward scanning)
++               * If the shadowed object exists then ignore.
++               */
++              obj = yaffs_find_by_number(dev, obj_id);
++              if(obj)
++                      return;
++      }
+ 
+-                                      in->hdrChunk = chunk;
++      /* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc.
++       * We put it in unlinked dir to be cleaned up after the scanning
++       */
++      obj =
++          yaffs_find_or_create_by_number(dev, obj_id,
++                                           YAFFS_OBJECT_TYPE_FILE);
++      if (!obj)
++              return;
++      obj->is_shadowed = 1;
++      yaffs_add_obj_to_dir(dev->unlinked_dir, obj);
++      obj->variant.file_variant.shrink_size = 0;
++      obj->valid = 1;         /* So that we don't read any other info for this file */
+ 
+-                              } else if (!in->valid) {
+-                                      /* we need to load this info */
++}
+ 
+-                                      in->valid = 1;
+-                                      in->hdrChunk = chunk;
+ 
+-                                      if (oh) {
+-                                              in->variantType = oh->type;
++void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list)
++{
++      yaffs_obj_t *hl;
++      yaffs_obj_t *in;
+ 
+-                                              in->yst_mode = oh->yst_mode;
+-#ifdef CONFIG_YAFFS_WINCE
+-                                              in->win_atime[0] = oh->win_atime[0];
+-                                              in->win_ctime[0] = oh->win_ctime[0];
+-                                              in->win_mtime[0] = oh->win_mtime[0];
+-                                              in->win_atime[1] = oh->win_atime[1];
+-                                              in->win_ctime[1] = oh->win_ctime[1];
+-                                              in->win_mtime[1] = oh->win_mtime[1];
+-#else
+-                                              in->yst_uid = oh->yst_uid;
+-                                              in->yst_gid = oh->yst_gid;
+-                                              in->yst_atime = oh->yst_atime;
+-                                              in->yst_mtime = oh->yst_mtime;
+-                                              in->yst_ctime = oh->yst_ctime;
+-                                              in->yst_rdev = oh->yst_rdev;
+-#endif
++      while (hard_list) {
++              hl = hard_list;
++              hard_list = (yaffs_obj_t *) (hard_list->hard_links.next);
++
++              in = yaffs_find_by_number(dev,
++                                            hl->variant.hardlink_variant.
++                                            equiv_id);
+ 
+-                                              if (oh->shadowsObject > 0)
+-                                                      yaffs_HandleShadowedObject(dev,
+-                                                                         oh->
+-                                                                         shadowsObject,
+-                                                                         1);
+-
+-
+-                                              yaffs_SetObjectName(in, oh->name);
+-                                              parent =
+-                                                  yaffs_FindOrCreateObjectByNumber
+-                                                      (dev, oh->parentObjectId,
+-                                                       YAFFS_OBJECT_TYPE_DIRECTORY);
+-
+-                                               fileSize = oh->fileSize;
+-                                               isShrink = oh->isShrink;
+-                                               equivalentObjectId = oh->equivalentObjectId;
++              if (in) {
++                      /* Add the hardlink pointers */
++                      hl->variant.hardlink_variant.equiv_obj = in;
++                      ylist_add(&hl->hard_links, &in->hard_links);
++              } else {
++                      /* Todo Need to report/handle this better.
++                       * Got a problem... hardlink to a non-existant object
++                       */
++                      hl->variant.hardlink_variant.equiv_obj = NULL;
++                      YINIT_LIST_HEAD(&hl->hard_links);
+ 
+-                                      } else {
+-                                              in->variantType = tags.extraObjectType;
+-                                              parent =
+-                                                  yaffs_FindOrCreateObjectByNumber
+-                                                      (dev, tags.extraParentObjectId,
+-                                                       YAFFS_OBJECT_TYPE_DIRECTORY);
+-                                               fileSize = tags.extraFileLength;
+-                                               isShrink = tags.extraIsShrinkHeader;
+-                                               equivalentObjectId = tags.extraEquivalentObjectId;
+-                                              in->lazyLoaded = 1;
++              }
++      }
++}
+ 
+-                                      }
+-                                      in->dirty = 0;
+ 
+-                                      if (!parent)
+-                                              alloc_failed = 1;
++static void yaffs_strip_deleted_objs(yaffs_dev_t *dev)
++{
++      /*
++      *  Sort out state of unlinked and deleted objects after scanning.
++      */
++      struct ylist_head *i;
++      struct ylist_head *n;
++      yaffs_obj_t *l;
+ 
+-                                      /* directory stuff...
+-                                       * hook up to parent
+-                                       */
++      if (dev->read_only)
++              return;
+ 
+-                                      if (parent && parent->variantType ==
+-                                          YAFFS_OBJECT_TYPE_UNKNOWN) {
+-                                              /* Set up as a directory */
+-                                              parent->variantType =
+-                                                      YAFFS_OBJECT_TYPE_DIRECTORY;
+-                                              YINIT_LIST_HEAD(&parent->variant.
+-                                                      directoryVariant.
+-                                                      children);
+-                                      } else if (!parent || parent->variantType !=
+-                                                 YAFFS_OBJECT_TYPE_DIRECTORY) {
+-                                              /* Hoosterman, another problem....
+-                                               * We're trying to use a non-directory as a directory
+-                                               */
++      /* Soft delete all the unlinked files */
++      ylist_for_each_safe(i, n,
++              &dev->unlinked_dir->variant.dir_variant.children) {
++              if (i) {
++                      l = ylist_entry(i, yaffs_obj_t, siblings);
++                      yaffs_del_obj(l);
++              }
++      }
+ 
+-                                              T(YAFFS_TRACE_ERROR,
+-                                                (TSTR
+-                                                 ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
+-                                                  TENDSTR)));
+-                                              parent = dev->lostNFoundDir;
+-                                      }
++      ylist_for_each_safe(i, n,
++              &dev->del_dir->variant.dir_variant.children) {
++              if (i) {
++                      l = ylist_entry(i, yaffs_obj_t, siblings);
++                      yaffs_del_obj(l);
++              }
++      }
+ 
+-                                      yaffs_AddObjectToDirectory(parent, in);
++}
+ 
+-                                      itsUnlinked = (parent == dev->deletedDir) ||
+-                                                    (parent == dev->unlinkedDir);
++/*
++ * This code iterates through all the objects making sure that they are rooted.
++ * Any unrooted objects are re-rooted in lost+found.
++ * An object needs to be in one of:
++ * - Directly under deleted, unlinked
++ * - Directly or indirectly under root.
++ *
++ * Note:
++ *  This code assumes that we don't ever change the current relationships between
++ *  directories:
++ *   root_dir->parent == unlinked_dir->parent == del_dir->parent == NULL
++ *   lostNfound->parent == root_dir
++ *
++ * This fixes the problem where directories might have inadvertently been deleted
++ * leaving the object "hanging" without being rooted in the directory tree.
++ */
++ 
++static int yaffs_has_null_parent(yaffs_dev_t *dev, yaffs_obj_t *obj)
++{
++      return (obj == dev->del_dir ||
++              obj == dev->unlinked_dir||
++              obj == dev->root_dir);
++}
+ 
+-                                      if (isShrink) {
+-                                              /* Mark the block as having a shrinkHeader */
+-                                              bi->hasShrinkHeader = 1;
+-                                      }
++static void yaffs_fix_hanging_objs(yaffs_dev_t *dev)
++{
++      yaffs_obj_t *obj;
++      yaffs_obj_t *parent;
++      int i;
++      struct ylist_head *lh;
++      struct ylist_head *n;
++      int depthLimit;
++      int hanging;
+ 
+-                                      /* Note re hardlinks.
+-                                       * Since we might scan a hardlink before its equivalent object is scanned
+-                                       * we put them all in a list.
+-                                       * After scanning is complete, we should have all the objects, so we run
+-                                       * through this list and fix up all the chains.
+-                                       */
++      if (dev->read_only)
++              return;
+ 
+-                                      switch (in->variantType) {
+-                                      case YAFFS_OBJECT_TYPE_UNKNOWN:
+-                                              /* Todo got a problem */
+-                                              break;
+-                                      case YAFFS_OBJECT_TYPE_FILE:
+-
+-                                              if (in->variant.fileVariant.
+-                                                  scannedFileSize < fileSize) {
+-                                                      /* This covers the case where the file size is greater
+-                                                       * than where the data is
+-                                                       * This will happen if the file is resized to be larger
+-                                                       * than its current data extents.
+-                                                       */
+-                                                      in->variant.fileVariant.fileSize = fileSize;
+-                                                      in->variant.fileVariant.scannedFileSize =
+-                                                          in->variant.fileVariant.fileSize;
+-                                              }
++      /* Iterate through the objects in each hash entry,
++       * looking at each object.
++       * Make sure it is rooted.
++       */
+ 
+-                                              if (isShrink &&
+-                                                  in->variant.fileVariant.shrinkSize > fileSize) {
+-                                                      in->variant.fileVariant.shrinkSize = fileSize;
+-                                              }
++      for (i = 0; i <  YAFFS_NOBJECT_BUCKETS; i++) {
++              ylist_for_each_safe(lh, n, &dev->obj_bucket[i].list) {
++                      if (lh) {
++                              obj = ylist_entry(lh, yaffs_obj_t, hash_link);
++                              parent= obj->parent;
++                              
++                              if(yaffs_has_null_parent(dev,obj)){
++                                      /* These directories are not hanging */
++                                      hanging = 0;
++                              }
++                              else if(!parent || parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
++                                      hanging = 1;
++                              else if(yaffs_has_null_parent(dev,parent))
++                                      hanging = 0;
++                              else {
++                                      /*
++                                       * Need to follow the parent chain to see if it is hanging.
++                                       */
++                                      hanging = 0;
++                                      depthLimit=100;
+ 
+-                                              break;
+-                                      case YAFFS_OBJECT_TYPE_HARDLINK:
+-                                              if (!itsUnlinked) {
+-                                                      in->variant.hardLinkVariant.equivalentObjectId =
+-                                                              equivalentObjectId;
+-                                                      in->hardLinks.next =
+-                                                              (struct ylist_head *) hardList;
+-                                                      hardList = in;
+-                                              }
+-                                              break;
+-                                      case YAFFS_OBJECT_TYPE_DIRECTORY:
+-                                              /* Do nothing */
+-                                              break;
+-                                      case YAFFS_OBJECT_TYPE_SPECIAL:
+-                                              /* Do nothing */
+-                                              break;
+-                                      case YAFFS_OBJECT_TYPE_SYMLINK:
+-                                              if (oh) {
+-                                                      in->variant.symLinkVariant.alias =
+-                                                              yaffs_CloneString(oh->alias);
+-                                                      if (!in->variant.symLinkVariant.alias)
+-                                                              alloc_failed = 1;
+-                                              }
+-                                              break;
++                                      while(parent != dev->root_dir &&
++                                              parent->parent &&
++                                              parent->parent->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY &&
++                                              depthLimit > 0){
++                                              parent = parent->parent;
++                                              depthLimit--;
+                                       }
+-
++                                      if(parent != dev->root_dir)
++                                              hanging = 1;
++                              }
++                              if(hanging){
++                                      T(YAFFS_TRACE_SCAN,
++                                        (TSTR("Hanging object %d moved to lost and found" TENDSTR),
++                                              obj->obj_id));
++                                      yaffs_add_obj_to_dir(dev->lost_n_found,obj);
+                               }
+-
+                       }
++              }
++      }
++}
+ 
+-              } /* End of scanning for each chunk */
+ 
+-              if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
+-                      /* If we got this far while scanning, then the block is fully allocated. */
+-                      state = YAFFS_BLOCK_STATE_FULL;
+-              }
++/*
++ * Delete directory contents for cleaning up lost and found.
++ */
++static void yaffs_del_dir_contents(yaffs_obj_t *dir)
++{
++      yaffs_obj_t *obj;
++      struct ylist_head *lh;
++      struct ylist_head *n;
+ 
+-              bi->blockState = state;
++      if(dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
++              YBUG();
++      
++      ylist_for_each_safe(lh, n, &dir->variant.dir_variant.children) {
++              if (lh) {
++                      obj = ylist_entry(lh, yaffs_obj_t, siblings);
++                      if(obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY)
++                              yaffs_del_dir_contents(obj);
++
++                      T(YAFFS_TRACE_SCAN,
++                              (TSTR("Deleting lost_found object %d" TENDSTR),
++                              obj->obj_id));
+ 
+-              /* Now let's see if it was dirty */
+-              if (bi->pagesInUse == 0 &&
+-                  !bi->hasShrinkHeader &&
+-                  bi->blockState == YAFFS_BLOCK_STATE_FULL) {
+-                      yaffs_BlockBecameDirty(dev, blk);
++                      /* Need to use UnlinkObject since Delete would not handle
++                       * hardlinked objects correctly.
++                       */
++                      yaffs_unlink_obj(obj); 
+               }
+-
+       }
++                      
++}
+ 
+-      if (altBlockIndex)
+-              YFREE_ALT(blockIndex);
+-      else
+-              YFREE(blockIndex);
++static void yaffs_empty_l_n_f(yaffs_dev_t *dev)
++{
++      yaffs_del_dir_contents(dev->lost_n_found);
++}
+ 
+-      /* Ok, we've done all the scanning.
+-       * Fix up the hard link chains.
+-       * We should now have scanned all the objects, now it's time to add these
+-       * hardlinks.
+-       */
+-      yaffs_HardlinkFixup(dev, hardList);
++static void yaffs_check_obj_details_loaded(yaffs_obj_t *in)
++{
++      __u8 *chunkData;
++      yaffs_obj_header *oh;
++      yaffs_dev_t *dev;
++      yaffs_ext_tags tags;
++      int result;
++      int alloc_failed = 0;
+ 
++      if (!in)
++              return;
+ 
+-      yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
++      dev = in->my_dev;
+ 
+-      if (alloc_failed)
+-              return YAFFS_FAIL;
++#if 0
++      T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR),
++              in->obj_id,
++              in->lazy_loaded ? "not yet" : "already"));
++#endif
+ 
+-      T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR)));
++      if (in->lazy_loaded && in->hdr_chunk > 0) {
++              in->lazy_loaded = 0;
++              chunkData = yaffs_get_temp_buffer(dev, __LINE__);
+ 
+-      return YAFFS_OK;
+-}
++              result = yaffs_rd_chunk_tags_nand(dev, in->hdr_chunk, chunkData, &tags);
++              oh = (yaffs_obj_header *) chunkData;
+ 
+-/*------------------------------  Directory Functions ----------------------------- */
++              in->yst_mode = oh->yst_mode;
++#ifdef CONFIG_YAFFS_WINCE
++              in->win_atime[0] = oh->win_atime[0];
++              in->win_ctime[0] = oh->win_ctime[0];
++              in->win_mtime[0] = oh->win_mtime[0];
++              in->win_atime[1] = oh->win_atime[1];
++              in->win_ctime[1] = oh->win_ctime[1];
++              in->win_mtime[1] = oh->win_mtime[1];
++#else
++              in->yst_uid = oh->yst_uid;
++              in->yst_gid = oh->yst_gid;
++              in->yst_atime = oh->yst_atime;
++              in->yst_mtime = oh->yst_mtime;
++              in->yst_ctime = oh->yst_ctime;
++              in->yst_rdev = oh->yst_rdev;
+ 
+-static void yaffs_VerifyObjectInDirectory(yaffs_Object *obj)
+-{
+-      struct ylist_head *lh;
+-      yaffs_Object *listObj;
++#endif
++              yaffs_set_obj_name_from_oh(in, oh);
+ 
+-      int count = 0;
++              if (in->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) {
++                      in->variant.symlink_variant.alias =
++                                                  yaffs_clone_str(oh->alias);
++                      if (!in->variant.symlink_variant.alias)
++                              alloc_failed = 1; /* Not returned to caller */
++              }
+ 
+-      if (!obj) {
+-              T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR)));
+-              YBUG();
+-              return;
++              yaffs_release_temp_buffer(dev, chunkData, __LINE__);
+       }
++}
+ 
+-      if (yaffs_SkipVerification(obj->myDev))
+-              return;
++/*------------------------------  Directory Functions ----------------------------- */
+ 
+-      if (!obj->parent) {
+-              T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR)));
+-              YBUG();
++/*
++ *yaffs_update_parent() handles fixing a directories mtime and ctime when a new
++ * link (ie. name) is created or deleted in the directory.
++ *
++ * ie.
++ *   create dir/a : update dir's mtime/ctime
++ *   rm dir/a:   update dir's mtime/ctime
++ *   modify dir/a: don't update dir's mtimme/ctime
++ *
++ * This can be handled immediately or defered. Defering helps reduce the number
++ * of updates when many files in a directory are changed within a brief period.
++ *
++ * If the directory updating is defered then yaffs_update_dirty_dirs must be
++ * called periodically.
++ */
++ 
++static void yaffs_update_parent(yaffs_obj_t *obj)
++{
++      yaffs_dev_t *dev;
++      if(!obj)
+               return;
+-      }
+-
+-      if (obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+-              T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR)));
+-              YBUG();
+-      }
+-
+-      /* Iterate through the objects in each hash entry */
++#ifndef CONFIG_YAFFS_WINCE
+ 
+-      ylist_for_each(lh, &obj->parent->variant.directoryVariant.children) {
+-              if (lh) {
+-                      listObj = ylist_entry(lh, yaffs_Object, siblings);
+-                      yaffs_VerifyObject(listObj);
+-                      if (obj == listObj)
+-                              count++;
++      dev = obj->my_dev;
++      obj->dirty = 1;
++      obj->yst_mtime = obj->yst_ctime = Y_CURRENT_TIME;
++      if(dev->param.defered_dir_update){
++              struct ylist_head *link = &obj->variant.dir_variant.dirty; 
++      
++              if(ylist_empty(link)){
++                      ylist_add(link,&dev->dirty_dirs);
++                      T(YAFFS_TRACE_BACKGROUND, (TSTR("Added object %d to dirty directories" TENDSTR),obj->obj_id));
+               }
+-       }
+ 
+-      if (count != 1) {
+-              T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count));
+-              YBUG();
+-      }
++      } else
++              yaffs_update_oh(obj, NULL, 0, 0, 0, NULL);
++#endif
+ }
+ 
+-static void yaffs_VerifyDirectory(yaffs_Object *directory)
++void yaffs_update_dirty_dirs(yaffs_dev_t *dev)
+ {
+-      struct ylist_head *lh;
+-      yaffs_Object *listObj;
+-
+-      if (!directory) {
+-              YBUG();
+-              return;
+-      }
++      struct ylist_head *link;
++      yaffs_obj_t *obj;
++      yaffs_dir_s *dS;
++      yaffs_obj_variant *oV;
+ 
+-      if (yaffs_SkipFullVerification(directory->myDev))
+-              return;
++      T(YAFFS_TRACE_BACKGROUND, (TSTR("Update dirty directories" TENDSTR)));
+ 
+-      if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+-              T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variantType));
+-              YBUG();
+-      }
++      while(!ylist_empty(&dev->dirty_dirs)){
++              link = dev->dirty_dirs.next;
++              ylist_del_init(link);
++              
++              dS=ylist_entry(link,yaffs_dir_s,dirty);
++              oV = ylist_entry(dS,yaffs_obj_variant,dir_variant);
++              obj = ylist_entry(oV,yaffs_obj_t,variant);
+ 
+-      /* Iterate through the objects in each hash entry */
++              T(YAFFS_TRACE_BACKGROUND, (TSTR("Update directory %d" TENDSTR), obj->obj_id));
+ 
+-      ylist_for_each(lh, &directory->variant.directoryVariant.children) {
+-              if (lh) {
+-                      listObj = ylist_entry(lh, yaffs_Object, siblings);
+-                      if (listObj->parent != directory) {
+-                              T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent));
+-                              YBUG();
+-                      }
+-                      yaffs_VerifyObjectInDirectory(listObj);
+-              }
++              if(obj->dirty)
++                      yaffs_update_oh(obj, NULL, 0, 0, 0, NULL);
+       }
+ }
+ 
+-
+-static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj)
++static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj)
+ {
+-      yaffs_Device *dev = obj->myDev;
+-      yaffs_Object *parent;
++      yaffs_dev_t *dev = obj->my_dev;
++      yaffs_obj_t *parent;
+ 
+-      yaffs_VerifyObjectInDirectory(obj);
++      yaffs_verify_obj_in_dir(obj);
+       parent = obj->parent;
+ 
+-      yaffs_VerifyDirectory(parent);
++      yaffs_verify_dir(parent);
+ 
+-      if (dev && dev->removeObjectCallback)
+-              dev->removeObjectCallback(obj);
++      if (dev && dev->param.remove_obj_fn)
++              dev->param.remove_obj_fn(obj);
+ 
+ 
+       ylist_del_init(&obj->siblings);
+       obj->parent = NULL;
+-
+-      yaffs_VerifyDirectory(parent);
++      
++      yaffs_verify_dir(parent);
+ }
+ 
+-
+-static void yaffs_AddObjectToDirectory(yaffs_Object *directory,
+-                                      yaffs_Object *obj)
++void yaffs_add_obj_to_dir(yaffs_obj_t *directory,
++                                      yaffs_obj_t *obj)
+ {
+       if (!directory) {
+               T(YAFFS_TRACE_ALWAYS,
+@@ -6699,7 +4495,7 @@ static void yaffs_AddObjectToDirectory(y
+               YBUG();
+               return;
+       }
+-      if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
++      if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR
+                  ("tragedy: Trying to add an object to a non-directory"
+@@ -6713,27 +4509,27 @@ static void yaffs_AddObjectToDirectory(y
+       }
+ 
+ 
+-      yaffs_VerifyDirectory(directory);
++      yaffs_verify_dir(directory);
+ 
+-      yaffs_RemoveObjectFromDirectory(obj);
++      yaffs_remove_obj_from_dir(obj);
+ 
+ 
+       /* Now add it */
+-      ylist_add(&obj->siblings, &directory->variant.directoryVariant.children);
++      ylist_add(&obj->siblings, &directory->variant.dir_variant.children);
+       obj->parent = directory;
+ 
+-      if (directory == obj->myDev->unlinkedDir
+-                      || directory == obj->myDev->deletedDir) {
++      if (directory == obj->my_dev->unlinked_dir
++                      || directory == obj->my_dev->del_dir) {
+               obj->unlinked = 1;
+-              obj->myDev->nUnlinkedFiles++;
+-              obj->renameAllowed = 0;
++              obj->my_dev->n_unlinked_files++;
++              obj->rename_allowed = 0;
+       }
+ 
+-      yaffs_VerifyDirectory(directory);
+-      yaffs_VerifyObjectInDirectory(obj);
++      yaffs_verify_dir(directory);
++      yaffs_verify_obj_in_dir(obj);
+ }
+ 
+-yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory,
++yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *directory,
+                                    const YCHAR *name)
+ {
+       int sum;
+@@ -6741,7 +4537,7 @@ yaffs_Object *yaffs_FindObjectByName(yaf
+       struct ylist_head *i;
+       YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1];
+ 
+-      yaffs_Object *l;
++      yaffs_obj_t *l;
+ 
+       if (!name)
+               return NULL;
+@@ -6749,39 +4545,39 @@ yaffs_Object *yaffs_FindObjectByName(yaf
+       if (!directory) {
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR
+-                 ("tragedy: yaffs_FindObjectByName: null pointer directory"
++                 ("tragedy: yaffs_find_by_name: null pointer directory"
+                   TENDSTR)));
+               YBUG();
+               return NULL;
+       }
+-      if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
++      if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR
+-                 ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR)));
++                 ("tragedy: yaffs_find_by_name: non-directory" TENDSTR)));
+               YBUG();
+       }
+ 
+-      sum = yaffs_CalcNameSum(name);
++      sum = yaffs_calc_name_sum(name);
+ 
+-      ylist_for_each(i, &directory->variant.directoryVariant.children) {
++      ylist_for_each(i, &directory->variant.dir_variant.children) {
+               if (i) {
+-                      l = ylist_entry(i, yaffs_Object, siblings);
++                      l = ylist_entry(i, yaffs_obj_t, siblings);
+ 
+                       if (l->parent != directory)
+                               YBUG();
+ 
+-                      yaffs_CheckObjectDetailsLoaded(l);
++                      yaffs_check_obj_details_loaded(l);
+ 
+                       /* Special case for lost-n-found */
+-                      if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
++                      if (l->obj_id == YAFFS_OBJECTID_LOSTNFOUND) {
+                               if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0)
+                                       return l;
+-                      } else if (yaffs_SumCompare(l->sum, sum) || l->hdrChunk <= 0) {
++                      } else if (yaffs_sum_cmp(l->sum, sum) || l->hdr_chunk <= 0) {
+                               /* LostnFound chunk called Objxxx
+                                * Do a real check
+                                */
+-                              yaffs_GetObjectName(l, buffer,
+-                                                  YAFFS_MAX_NAME_LENGTH);
++                              yaffs_get_obj_name(l, buffer,
++                                                  YAFFS_MAX_NAME_LENGTH + 1);
+                               if (yaffs_strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH) == 0)
+                                       return l;
+                       }
+@@ -6793,31 +4589,31 @@ yaffs_Object *yaffs_FindObjectByName(yaf
+ 
+ 
+ #if 0
+-int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir,
+-                                      int (*fn) (yaffs_Object *))
++int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir,
++                                      int (*fn) (yaffs_obj_t *))
+ {
+       struct ylist_head *i;
+-      yaffs_Object *l;
++      yaffs_obj_t *l;
+ 
+-      if (!theDir) {
++      if (!the_dir) {
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR
+-                 ("tragedy: yaffs_FindObjectByName: null pointer directory"
++                 ("tragedy: yaffs_find_by_name: null pointer directory"
+                   TENDSTR)));
+               YBUG();
+               return YAFFS_FAIL;
+       }
+-      if (theDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
++      if (the_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR
+-                 ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR)));
++                 ("tragedy: yaffs_find_by_name: non-directory" TENDSTR)));
+               YBUG();
+               return YAFFS_FAIL;
+       }
+ 
+-      ylist_for_each(i, &theDir->variant.directoryVariant.children) {
++      ylist_for_each(i, &the_dir->variant.dir_variant.children) {
+               if (i) {
+-                      l = ylist_entry(i, yaffs_Object, siblings);
++                      l = ylist_entry(i, yaffs_obj_t, siblings);
+                       if (l && !fn(l))
+                               return YAFFS_FAIL;
+               }
+@@ -6832,82 +4628,175 @@ int yaffs_ApplyToDirectoryChildren(yaffs
+  * actual object.
+  */
+ 
+-yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj)
++yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj)
+ {
+-      if (obj && obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
++      if (obj && obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) {
+               /* We want the object id of the equivalent object, not this one */
+-              obj = obj->variant.hardLinkVariant.equivalentObject;
+-              yaffs_CheckObjectDetailsLoaded(obj);
++              obj = obj->variant.hardlink_variant.equiv_obj;
++              yaffs_check_obj_details_loaded(obj);
+       }
+       return obj;
+ }
+ 
+-int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize)
+-{
+-      memset(name, 0, buffSize * sizeof(YCHAR));
+-
+-      yaffs_CheckObjectDetailsLoaded(obj);
++/*
++ *  A note or two on object names.
++ *  * If the object name is missing, we then make one up in the form objnnn
++ *
++ *  * ASCII names are stored in the object header's name field from byte zero
++ *  * Unicode names are historically stored starting from byte zero.
++ *
++ * Then there are automatic Unicode names...
++ * The purpose of these is to save names in a way that can be read as
++ * ASCII or Unicode names as appropriate, thus allowing a Unicode and ASCII
++ * system to share files.
++ *
++ * These automatic unicode are stored slightly differently...
++ *  - If the name can fit in the ASCII character space then they are saved as 
++ *    ascii names as per above.
++ *  - If the name needs Unicode then the name is saved in Unicode
++ *    starting at oh->name[1].
+ 
+-      if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
+-              yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1);
+-      } else if (obj->hdrChunk <= 0) {
++ */
++static void yaffs_fix_null_name(yaffs_obj_t * obj,YCHAR * name, int buffer_size)
++{
++      /* Create an object name if we could not find one. */
++      if(yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH) == 0){
+               YCHAR locName[20];
+               YCHAR numString[20];
+               YCHAR *x = &numString[19];
+-              unsigned v = obj->objectId;
++              unsigned v = obj->obj_id;
+               numString[19] = 0;
+-              while (v > 0) {
++              while(v>0){
+                       x--;
+                       *x = '0' + (v % 10);
+                       v /= 10;
+               }
+               /* make up a name */
+               yaffs_strcpy(locName, YAFFS_LOSTNFOUND_PREFIX);
+-              yaffs_strcat(locName, x);
+-              yaffs_strncpy(name, locName, buffSize - 1);
++              yaffs_strcat(locName,x);
++              yaffs_strncpy(name, locName, buffer_size - 1);
++      }
++}
++
++static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize)
++{
++#ifdef CONFIG_YAFFS_AUTO_UNICODE
++      if(dev->param.auto_unicode){
++              if(*ohName){
++                      /* It is an ASCII name, so do an ASCII to unicode conversion */
++                      const char *asciiOhName = (const char *)ohName;
++                      int n = bufferSize - 1;
++                      while(n > 0 && *asciiOhName){
++                              *name = *asciiOhName;
++                              name++;
++                              asciiOhName++;
++                              n--;
++                      }
++              } else 
++                      yaffs_strncpy(name,ohName+1, bufferSize -1);
++      } else
++#endif
++              yaffs_strncpy(name, ohName, bufferSize - 1);
++}
++
++
++static void yaffs_load_oh_from_name(yaffs_dev_t *dev, YCHAR *ohName, const YCHAR *name)
++{
++#ifdef CONFIG_YAFFS_AUTO_UNICODE
++
++      int isAscii;
++      YCHAR *w;
++
++      if(dev->param.auto_unicode){
++
++              isAscii = 1;
++              w = name;
++      
++              /* Figure out if the name will fit in ascii character set */
++              while(isAscii && *w){
++                      if((*w) & 0xff00)
++                              isAscii = 0;
++                      w++;
++              }
+ 
++              if(isAscii){
++                      /* It is an ASCII name, so do a unicode to ascii conversion */
++                      char *asciiOhName = (char *)ohName;
++                      int n = YAFFS_MAX_NAME_LENGTH  - 1;
++                      while(n > 0 && *name){
++                              *asciiOhName= *name;
++                              name++;
++                              asciiOhName++;
++                              n--;
++                      }
++              } else{
++                      /* It is a unicode name, so save starting at the second YCHAR */
++                      *ohName = 0;
++                      yaffs_strncpy(ohName+1,name, YAFFS_MAX_NAME_LENGTH -2);
++              }
+       }
++      else 
++#endif
++              yaffs_strncpy(ohName,name, YAFFS_MAX_NAME_LENGTH - 1);
++
++}
++
++int yaffs_get_obj_name(yaffs_obj_t * obj, YCHAR * name, int buffer_size)
++{
++      memset(name, 0, buffer_size * sizeof(YCHAR));
++      
++      yaffs_check_obj_details_loaded(obj);
++
++      if (obj->obj_id == YAFFS_OBJECTID_LOSTNFOUND) {
++              yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffer_size - 1);
++      } 
+ #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
+-      else if (obj->shortName[0])
+-              yaffs_strcpy(name, obj->shortName);
++      else if (obj->short_name[0]) {
++              yaffs_strcpy(name, obj->short_name);
++      }
+ #endif
+-      else {
++      else if(obj->hdr_chunk > 0) {
+               int result;
+-              __u8 *buffer = yaffs_GetTempBuffer(obj->myDev, __LINE__);
++              __u8 *buffer = yaffs_get_temp_buffer(obj->my_dev, __LINE__);
+ 
+-              yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *) buffer;
++              yaffs_obj_header *oh = (yaffs_obj_header *) buffer;
+ 
+-              memset(buffer, 0, obj->myDev->nDataBytesPerChunk);
++              memset(buffer, 0, obj->my_dev->data_bytes_per_chunk);
+ 
+-              if (obj->hdrChunk > 0) {
+-                      result = yaffs_ReadChunkWithTagsFromNAND(obj->myDev,
+-                                                      obj->hdrChunk, buffer,
++              if (obj->hdr_chunk > 0) {
++                      result = yaffs_rd_chunk_tags_nand(obj->my_dev,
++                                                      obj->hdr_chunk, buffer,
+                                                       NULL);
+               }
+-              yaffs_strncpy(name, oh->name, buffSize - 1);
++              yaffs_load_name_from_oh(obj->my_dev,name,oh->name,buffer_size);
+ 
+-              yaffs_ReleaseTempBuffer(obj->myDev, buffer, __LINE__);
++              yaffs_release_temp_buffer(obj->my_dev, buffer, __LINE__);
+       }
+ 
+-      return yaffs_strlen(name);
++      yaffs_fix_null_name(obj,name,buffer_size);
++
++      return yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH);
+ }
+ 
+-int yaffs_GetObjectFileLength(yaffs_Object *obj)
++
++int yaffs_get_obj_length(yaffs_obj_t *obj)
+ {
+       /* Dereference any hard linking */
+-      obj = yaffs_GetEquivalentObject(obj);
++      obj = yaffs_get_equivalent_obj(obj);
+ 
+-      if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+-              return obj->variant.fileVariant.fileSize;
+-      if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
+-              return yaffs_strlen(obj->variant.symLinkVariant.alias);
+-      else {
++      if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE)
++              return obj->variant.file_variant.file_size;
++      if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK){
++              if(!obj->variant.symlink_variant.alias)
++                      return 0;
++              return yaffs_strnlen(obj->variant.symlink_variant.alias,YAFFS_MAX_ALIAS_LENGTH);
++      } else {
+               /* Only a directory should drop through to here */
+-              return obj->myDev->nDataBytesPerChunk;
++              return obj->my_dev->data_bytes_per_chunk;
+       }
+ }
+ 
+-int yaffs_GetObjectLinkCount(yaffs_Object *obj)
++int yaffs_get_obj_link_count(yaffs_obj_t *obj)
+ {
+       int count = 0;
+       struct ylist_head *i;
+@@ -6915,24 +4804,24 @@ int yaffs_GetObjectLinkCount(yaffs_Objec
+       if (!obj->unlinked)
+               count++;                /* the object itself */
+ 
+-      ylist_for_each(i, &obj->hardLinks)
++      ylist_for_each(i, &obj->hard_links)
+               count++;                /* add the hard links; */
+ 
+       return count;
+ }
+ 
+-int yaffs_GetObjectInode(yaffs_Object *obj)
++int yaffs_get_obj_inode(yaffs_obj_t *obj)
+ {
+-      obj = yaffs_GetEquivalentObject(obj);
++      obj = yaffs_get_equivalent_obj(obj);
+ 
+-      return obj->objectId;
++      return obj->obj_id;
+ }
+ 
+-unsigned yaffs_GetObjectType(yaffs_Object *obj)
++unsigned yaffs_get_obj_type(yaffs_obj_t *obj)
+ {
+-      obj = yaffs_GetEquivalentObject(obj);
++      obj = yaffs_get_equivalent_obj(obj);
+ 
+-      switch (obj->variantType) {
++      switch (obj->variant_type) {
+       case YAFFS_OBJECT_TYPE_FILE:
+               return DT_REG;
+               break;
+@@ -6960,18 +4849,18 @@ unsigned yaffs_GetObjectType(yaffs_Objec
+       }
+ }
+ 
+-YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj)
++YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj)
+ {
+-      obj = yaffs_GetEquivalentObject(obj);
+-      if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
+-              return yaffs_CloneString(obj->variant.symLinkVariant.alias);
++      obj = yaffs_get_equivalent_obj(obj);
++      if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK)
++              return yaffs_clone_str(obj->variant.symlink_variant.alias);
+       else
+-              return yaffs_CloneString(_Y(""));
++              return yaffs_clone_str(_Y(""));
+ }
+ 
+ #ifndef CONFIG_YAFFS_WINCE
+ 
+-int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr)
++int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr)
+ {
+       unsigned int valid = attr->ia_valid;
+ 
+@@ -6990,14 +4879,14 @@ int yaffs_SetAttributes(yaffs_Object *ob
+               obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime);
+ 
+       if (valid & ATTR_SIZE)
+-              yaffs_ResizeFile(obj, attr->ia_size);
++              yaffs_resize_file(obj, attr->ia_size);
+ 
+-      yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0);
++      yaffs_update_oh(obj, NULL, 1, 0, 0, NULL);
+ 
+       return YAFFS_OK;
+ 
+ }
+-int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr)
++int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr)
+ {
+       unsigned int valid = 0;
+ 
+@@ -7015,7 +4904,7 @@ int yaffs_GetAttributes(yaffs_Object *ob
+       Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime;
+       valid |= ATTR_MTIME;
+ 
+-      attr->ia_size = yaffs_GetFileSize(obj);
++      attr->ia_size = yaffs_get_file_size(obj);
+       valid |= ATTR_SIZE;
+ 
+       attr->ia_valid = valid;
+@@ -7025,20 +4914,137 @@ int yaffs_GetAttributes(yaffs_Object *ob
+ 
+ #endif
+ 
++
++static int yaffs_do_xattrib_mod(yaffs_obj_t *obj, int set, const YCHAR *name, const void *value, int size, int flags)
++{
++      yaffs_xattr_mod xmod;
++
++      int result;
++
++      xmod.set = set;
++      xmod.name = name;
++      xmod.data = value;
++      xmod.size =  size;
++      xmod.flags = flags;
++      xmod.result = -ENOSPC;
++
++      result = yaffs_update_oh(obj, NULL, 0, 0, 0, &xmod);
++
++      if(result > 0)
++              return xmod.result;
++      else
++              return -ENOSPC;
++}
++
++static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod)
++{
++      int retval = 0;
++      int x_offs = sizeof(yaffs_obj_header);
++      yaffs_dev_t *dev = obj->my_dev;
++      int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header);
++
++      char * x_buffer = buffer + x_offs;
++
++      if(xmod->set)
++              retval = nval_set(x_buffer, x_size, xmod->name, xmod->data, xmod->size, xmod->flags);
++      else
++              retval = nval_del(x_buffer, x_size, xmod->name);
++
++      obj->has_xattr = nval_hasvalues(x_buffer, x_size);
++      obj->xattr_known = 1;
++
++      xmod->result = retval;
++
++      return retval;
++}
++
++static int yaffs_do_xattrib_fetch(yaffs_obj_t *obj, const YCHAR *name, void *value, int size)
++{
++      char *buffer = NULL;
++      int result;
++      yaffs_ext_tags tags;
++      yaffs_dev_t *dev = obj->my_dev;
++      int x_offs = sizeof(yaffs_obj_header);
++      int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header);
++
++      char * x_buffer;
++
++      int retval = 0;
++
++      if(obj->hdr_chunk < 1)
++              return -ENODATA;
++
++      /* If we know that the object has no xattribs then don't do all the
++       * reading and parsing.
++       */
++      if(obj->xattr_known && !obj->has_xattr){
++              if(name)
++                      return -ENODATA;
++              else
++                      return 0;
++      }
++
++      buffer = (char *) yaffs_get_temp_buffer(dev, __LINE__);
++      if(!buffer)
++              return -ENOMEM;
++
++      result = yaffs_rd_chunk_tags_nand(dev,obj->hdr_chunk, (__u8 *)buffer, &tags);
++
++      if(result != YAFFS_OK)
++              retval = -ENOENT;
++      else{
++              x_buffer =  buffer + x_offs;
++
++              if (!obj->xattr_known){
++                      obj->has_xattr = nval_hasvalues(x_buffer, x_size);
++                      obj->xattr_known = 1;
++              }
++
++              if(name)
++                      retval = nval_get(x_buffer, x_size, name, value, size);
++              else
++                      retval = nval_list(x_buffer, x_size, value,size);
++      }
++      yaffs_release_temp_buffer(dev,(__u8 *)buffer,__LINE__);
++      return retval;
++}
++
++int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags)
++{
++      return yaffs_do_xattrib_mod(obj, 1, name, value, size, flags);
++}
++
++int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name)
++{
++      return yaffs_do_xattrib_mod(obj, 0, name, NULL, 0, 0);
++}
++
++int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size)
++{
++      return yaffs_do_xattrib_fetch(obj, name, value, size);
++}
++
++int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size)
++{
++      return yaffs_do_xattrib_fetch(obj, NULL, buffer,size);
++}
++
++
++
+ #if 0
+-int yaffs_DumpObject(yaffs_Object *obj)
++int yaffs_dump_obj(yaffs_obj_t *obj)
+ {
+       YCHAR name[257];
+ 
+-      yaffs_GetObjectName(obj, name, 256);
++      yaffs_get_obj_name(obj, name, YAFFS_MAX_NAME_LENGTH + 1);
+ 
+       T(YAFFS_TRACE_ALWAYS,
+         (TSTR
+          ("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d"
+           " chunk %d type %d size %d\n"
+-          TENDSTR), obj->objectId, yaffs_GetObjectInode(obj), name,
+-         obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdrChunk,
+-         yaffs_GetObjectType(obj), yaffs_GetObjectFileLength(obj)));
++          TENDSTR), obj->obj_id, yaffs_get_obj_inode(obj), name,
++         obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdr_chunk,
++         yaffs_get_obj_type(obj), yaffs_get_obj_length(obj)));
+ 
+       return YAFFS_OK;
+ }
+@@ -7046,72 +5052,74 @@ int yaffs_DumpObject(yaffs_Object *obj)
+ 
+ /*---------------------------- Initialisation code -------------------------------------- */
+ 
+-static int yaffs_CheckDevFunctions(const yaffs_Device *dev)
++static int yaffs_cehck_dev_fns(const yaffs_dev_t *dev)
+ {
+ 
+       /* Common functions, gotta have */
+-      if (!dev->eraseBlockInNAND || !dev->initialiseNAND)
++      if (!dev->param.erase_fn || !dev->param.initialise_flash_fn)
+               return 0;
+ 
+ #ifdef CONFIG_YAFFS_YAFFS2
+ 
+       /* Can use the "with tags" style interface for yaffs1 or yaffs2 */
+-      if (dev->writeChunkWithTagsToNAND &&
+-          dev->readChunkWithTagsFromNAND &&
+-          !dev->writeChunkToNAND &&
+-          !dev->readChunkFromNAND &&
+-          dev->markNANDBlockBad && dev->queryNANDBlock)
++      if (dev->param.write_chunk_tags_fn &&
++          dev->param.read_chunk_tags_fn &&
++          !dev->param.write_chunk_fn &&
++          !dev->param.read_chunk_fn &&
++          dev->param.bad_block_fn &&
++          dev->param.query_block_fn)
+               return 1;
+ #endif
+ 
+       /* Can use the "spare" style interface for yaffs1 */
+-      if (!dev->isYaffs2 &&
+-          !dev->writeChunkWithTagsToNAND &&
+-          !dev->readChunkWithTagsFromNAND &&
+-          dev->writeChunkToNAND &&
+-          dev->readChunkFromNAND &&
+-          !dev->markNANDBlockBad && !dev->queryNANDBlock)
++      if (!dev->param.is_yaffs2 &&
++          !dev->param.write_chunk_tags_fn &&
++          !dev->param.read_chunk_tags_fn &&
++          dev->param.write_chunk_fn &&
++          dev->param.read_chunk_fn &&
++          !dev->param.bad_block_fn &&
++          !dev->param.query_block_fn)
+               return 1;
+ 
+-      return 0;               /* bad */
++      return 0;       /* bad */
+ }
+ 
+ 
+-static int yaffs_CreateInitialDirectories(yaffs_Device *dev)
++static int yaffs_create_initial_dir(yaffs_dev_t *dev)
+ {
+       /* Initialise the unlinked, deleted, root and lost and found directories */
+ 
+-      dev->lostNFoundDir = dev->rootDir =  NULL;
+-      dev->unlinkedDir = dev->deletedDir = NULL;
++      dev->lost_n_found = dev->root_dir =  NULL;
++      dev->unlinked_dir = dev->del_dir = NULL;
+ 
+-      dev->unlinkedDir =
+-          yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR);
++      dev->unlinked_dir =
++          yaffs_create_fake_dir(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR);
+ 
+-      dev->deletedDir =
+-          yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_DELETED, S_IFDIR);
++      dev->del_dir =
++          yaffs_create_fake_dir(dev, YAFFS_OBJECTID_DELETED, S_IFDIR);
+ 
+-      dev->rootDir =
+-          yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_ROOT,
++      dev->root_dir =
++          yaffs_create_fake_dir(dev, YAFFS_OBJECTID_ROOT,
+                                     YAFFS_ROOT_MODE | S_IFDIR);
+-      dev->lostNFoundDir =
+-          yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND,
++      dev->lost_n_found =
++          yaffs_create_fake_dir(dev, YAFFS_OBJECTID_LOSTNFOUND,
+                                     YAFFS_LOSTNFOUND_MODE | S_IFDIR);
+ 
+-      if (dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir) {
+-              yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir);
++      if (dev->lost_n_found && dev->root_dir && dev->unlinked_dir && dev->del_dir) {
++              yaffs_add_obj_to_dir(dev->root_dir, dev->lost_n_found);
+               return YAFFS_OK;
+       }
+ 
+       return YAFFS_FAIL;
+ }
+ 
+-int yaffs_GutsInitialise(yaffs_Device *dev)
++int yaffs_guts_initialise(yaffs_dev_t *dev)
+ {
+       int init_failed = 0;
+       unsigned x;
+       int bits;
+ 
+-      T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_GutsInitialise()" TENDSTR)));
++      T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_guts_initialise()" TENDSTR)));
+ 
+       /* Check stuff that must be set */
+ 
+@@ -7120,52 +5128,52 @@ int yaffs_GutsInitialise(yaffs_Device *d
+               return YAFFS_FAIL;
+       }
+ 
+-      dev->internalStartBlock = dev->startBlock;
+-      dev->internalEndBlock = dev->endBlock;
+-      dev->blockOffset = 0;
+-      dev->chunkOffset = 0;
+-      dev->nFreeChunks = 0;
+-
+-      dev->gcBlock = -1;
+-
+-      if (dev->startBlock == 0) {
+-              dev->internalStartBlock = dev->startBlock + 1;
+-              dev->internalEndBlock = dev->endBlock + 1;
+-              dev->blockOffset = 1;
+-              dev->chunkOffset = dev->nChunksPerBlock;
++      dev->internal_start_block = dev->param.start_block;
++      dev->internal_end_block = dev->param.end_block;
++      dev->block_offset = 0;
++      dev->chunk_offset = 0;
++      dev->n_free_chunks = 0;
++
++      dev->gc_block = 0;
++
++      if (dev->param.start_block == 0) {
++              dev->internal_start_block = dev->param.start_block + 1;
++              dev->internal_end_block = dev->param.end_block + 1;
++              dev->block_offset = 1;
++              dev->chunk_offset = dev->param.chunks_per_block;
+       }
+ 
+       /* Check geometry parameters. */
+ 
+-      if ((!dev->inbandTags && dev->isYaffs2 && dev->totalBytesPerChunk < 1024) ||
+-          (!dev->isYaffs2 && dev->totalBytesPerChunk < 512) ||
+-          (dev->inbandTags && !dev->isYaffs2) ||
+-           dev->nChunksPerBlock < 2 ||
+-           dev->nReservedBlocks < 2 ||
+-           dev->internalStartBlock <= 0 ||
+-           dev->internalEndBlock <= 0 ||
+-           dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2)) {   /* otherwise it is too small */
++      if ((!dev->param.inband_tags && dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 1024) ||
++          (!dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 512) ||
++          (dev->param.inband_tags && !dev->param.is_yaffs2) ||
++           dev->param.chunks_per_block < 2 ||
++           dev->param.n_reserved_blocks < 2 ||
++           dev->internal_start_block <= 0 ||
++           dev->internal_end_block <= 0 ||
++           dev->internal_end_block <= (dev->internal_start_block + dev->param.n_reserved_blocks + 2)) {       /* otherwise it is too small */
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR
+-                 ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inbandTags %d "
+-                  TENDSTR), dev->totalBytesPerChunk, dev->isYaffs2 ? "2" : "", dev->inbandTags));
++                 ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inband_tags %d "
++                  TENDSTR), dev->param.total_bytes_per_chunk, dev->param.is_yaffs2 ? "2" : "", dev->param.inband_tags));
+               return YAFFS_FAIL;
+       }
+ 
+-      if (yaffs_InitialiseNAND(dev) != YAFFS_OK) {
++      if (yaffs_init_nand(dev) != YAFFS_OK) {
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR("yaffs: InitialiseNAND failed" TENDSTR)));
+               return YAFFS_FAIL;
+       }
+ 
+       /* Sort out space for inband tags, if required */
+-      if (dev->inbandTags)
+-              dev->nDataBytesPerChunk = dev->totalBytesPerChunk - sizeof(yaffs_PackedTags2TagsPart);
++      if (dev->param.inband_tags)
++              dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk - sizeof(yaffs_PackedTags2TagsPart);
+       else
+-              dev->nDataBytesPerChunk = dev->totalBytesPerChunk;
++              dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk;
+ 
+       /* Got the right mix of functions? */
+-      if (!yaffs_CheckDevFunctions(dev)) {
++      if (!yaffs_cehck_dev_fns(dev)) {
+               /* Function missing */
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR
+@@ -7175,13 +5183,13 @@ int yaffs_GutsInitialise(yaffs_Device *d
+       }
+ 
+       /* This is really a compilation check. */
+-      if (!yaffs_CheckStructures()) {
++      if (!yaffs_check_structures()) {
+               T(YAFFS_TRACE_ALWAYS,
+-                (TSTR("yaffs_CheckStructures failed\n" TENDSTR)));
++                (TSTR("yaffs_check_structures failed\n" TENDSTR)));
+               return YAFFS_FAIL;
+       }
+ 
+-      if (dev->isMounted) {
++      if (dev->is_mounted) {
+               T(YAFFS_TRACE_ALWAYS,
+                 (TSTR("yaffs: device already mounted\n" TENDSTR)));
+               return YAFFS_FAIL;
+@@ -7189,59 +5197,62 @@ int yaffs_GutsInitialise(yaffs_Device *d
+ 
+       /* Finished with most checks. One or two more checks happen later on too. */
+ 
+-      dev->isMounted = 1;
++      dev->is_mounted = 1;
+ 
+       /* OK now calculate a few things for the device */
+ 
+       /*
+        *  Calculate all the chunk size manipulation numbers:
+        */
+-      x = dev->nDataBytesPerChunk;
+-      /* We always use dev->chunkShift and dev->chunkDiv */
+-      dev->chunkShift = Shifts(x);
+-      x >>= dev->chunkShift;
+-      dev->chunkDiv = x;
+-      /* We only use chunk mask if chunkDiv is 1 */
+-      dev->chunkMask = (1<<dev->chunkShift) - 1;
++      x = dev->data_bytes_per_chunk;
++      /* We always use dev->chunk_shift and dev->chunk_div */
++      dev->chunk_shift = Shifts(x);
++      x >>= dev->chunk_shift;
++      dev->chunk_div = x;
++      /* We only use chunk mask if chunk_div is 1 */
++      dev->chunk_mask = (1<<dev->chunk_shift) - 1;
+ 
+       /*
+-       * Calculate chunkGroupBits.
+-       * We need to find the next power of 2 > than internalEndBlock
++       * Calculate chunk_grp_bits.
++       * We need to find the next power of 2 > than internal_end_block
+        */
+ 
+-      x = dev->nChunksPerBlock * (dev->internalEndBlock + 1);
++      x = dev->param.chunks_per_block * (dev->internal_end_block + 1);
+ 
+       bits = ShiftsGE(x);
+ 
+       /* Set up tnode width if wide tnodes are enabled. */
+-      if (!dev->wideTnodesDisabled) {
++      if (!dev->param.wide_tnodes_disabled) {
+               /* bits must be even so that we end up with 32-bit words */
+               if (bits & 1)
+                       bits++;
+               if (bits < 16)
+-                      dev->tnodeWidth = 16;
++                      dev->tnode_width = 16;
+               else
+-                      dev->tnodeWidth = bits;
++                      dev->tnode_width = bits;
+       } else
+-              dev->tnodeWidth = 16;
++              dev->tnode_width = 16;
+ 
+-      dev->tnodeMask = (1<<dev->tnodeWidth)-1;
++      dev->tnode_mask = (1<<dev->tnode_width)-1;
+ 
+       /* Level0 Tnodes are 16 bits or wider (if wide tnodes are enabled),
+        * so if the bitwidth of the
+        * chunk range we're using is greater than 16 we need
+-       * to figure out chunk shift and chunkGroupSize
++       * to figure out chunk shift and chunk_grp_size
+        */
+ 
+-      if (bits <= dev->tnodeWidth)
+-              dev->chunkGroupBits = 0;
++      if (bits <= dev->tnode_width)
++              dev->chunk_grp_bits = 0;
+       else
+-              dev->chunkGroupBits = bits - dev->tnodeWidth;
++              dev->chunk_grp_bits = bits - dev->tnode_width;
+ 
++      dev->tnode_size = (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8;
++      if(dev->tnode_size < sizeof(yaffs_tnode_t))
++              dev->tnode_size = sizeof(yaffs_tnode_t);
+ 
+-      dev->chunkGroupSize = 1 << dev->chunkGroupBits;
++      dev->chunk_grp_size = 1 << dev->chunk_grp_bits;
+ 
+-      if (dev->nChunksPerBlock < dev->chunkGroupSize) {
++      if (dev->param.chunks_per_block < dev->chunk_grp_size) {
+               /* We have a problem because the soft delete won't work if
+                * the chunk group size > chunks per block.
+                * This can be remedied by using larger "virtual blocks".
+@@ -7255,85 +5266,89 @@ int yaffs_GutsInitialise(yaffs_Device *d
+       /* OK, we've finished verifying the device, lets continue with initialisation */
+ 
+       /* More device initialisation */
+-      dev->garbageCollections = 0;
+-      dev->passiveGarbageCollections = 0;
+-      dev->currentDirtyChecker = 0;
+-      dev->bufferedBlock = -1;
+-      dev->doingBufferedBlockRewrite = 0;
+-      dev->nDeletedFiles = 0;
+-      dev->nBackgroundDeletions = 0;
+-      dev->nUnlinkedFiles = 0;
+-      dev->eccFixed = 0;
+-      dev->eccUnfixed = 0;
+-      dev->tagsEccFixed = 0;
+-      dev->tagsEccUnfixed = 0;
+-      dev->nErasureFailures = 0;
+-      dev->nErasedBlocks = 0;
+-      dev->isDoingGC = 0;
+-      dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */
++      dev->all_gcs = 0;
++      dev->passive_gc_count = 0;
++      dev->oldest_dirty_gc_count = 0;
++      dev->bg_gcs = 0;
++      dev->gc_block_finder = 0;
++      dev->buffered_block = -1;
++      dev->doing_buffered_block_rewrite = 0;
++      dev->n_deleted_files = 0;
++      dev->n_bg_deletions = 0;
++      dev->n_unlinked_files = 0;
++      dev->n_ecc_fixed = 0;
++      dev->n_ecc_unfixed = 0;
++      dev->n_tags_ecc_fixed = 0;
++      dev->n_tags_ecc_unfixed = 0;
++      dev->n_erase_failures = 0;
++      dev->n_erased_blocks = 0;
++      dev->gc_disable= 0;
++      dev->has_pending_prioritised_gc = 1; /* Assume the worst for now, will get fixed on first GC */
++      YINIT_LIST_HEAD(&dev->dirty_dirs);
++      dev->oldest_dirty_seq = 0;
++      dev->oldest_dirty_block = 0;
+ 
+       /* Initialise temporary buffers and caches. */
+-      if (!yaffs_InitialiseTempBuffers(dev))
++      if (!yaffs_init_tmp_buffers(dev))
+               init_failed = 1;
+ 
+-      dev->srCache = NULL;
+-      dev->gcCleanupList = NULL;
++      dev->cache = NULL;
++      dev->gc_cleanup_list = NULL;
+ 
+ 
+       if (!init_failed &&
+-          dev->nShortOpCaches > 0) {
++          dev->param.n_caches > 0) {
+               int i;
+               void *buf;
+-              int srCacheBytes = dev->nShortOpCaches * sizeof(yaffs_ChunkCache);
++              int cacheBytes = dev->param.n_caches * sizeof(yaffs_cache_t);
+ 
+-              if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES)
+-                      dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES;
++              if (dev->param.n_caches > YAFFS_MAX_SHORT_OP_CACHES)
++                      dev->param.n_caches = YAFFS_MAX_SHORT_OP_CACHES;
+ 
+-              dev->srCache =  YMALLOC(srCacheBytes);
++              dev->cache =  YMALLOC(cacheBytes);
+ 
+-              buf = (__u8 *) dev->srCache;
++              buf = (__u8 *) dev->cache;
+ 
+-              if (dev->srCache)
+-                      memset(dev->srCache, 0, srCacheBytes);
++              if (dev->cache)
++                      memset(dev->cache, 0, cacheBytes);
+ 
+-              for (i = 0; i < dev->nShortOpCaches && buf; i++) {
+-                      dev->srCache[i].object = NULL;
+-                      dev->srCache[i].lastUse = 0;
+-                      dev->srCache[i].dirty = 0;
+-                      dev->srCache[i].data = buf = YMALLOC_DMA(dev->totalBytesPerChunk);
++              for (i = 0; i < dev->param.n_caches && buf; i++) {
++                      dev->cache[i].object = NULL;
++                      dev->cache[i].last_use = 0;
++                      dev->cache[i].dirty = 0;
++                      dev->cache[i].data = buf = YMALLOC_DMA(dev->param.total_bytes_per_chunk);
+               }
+               if (!buf)
+                       init_failed = 1;
+ 
+-              dev->srLastUse = 0;
++              dev->cache_last_use = 0;
+       }
+ 
+-      dev->cacheHits = 0;
++      dev->cache_hits = 0;
+ 
+       if (!init_failed) {
+-              dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32));
+-              if (!dev->gcCleanupList)
++              dev->gc_cleanup_list = YMALLOC(dev->param.chunks_per_block * sizeof(__u32));
++              if (!dev->gc_cleanup_list)
+                       init_failed = 1;
+       }
+ 
+-      if (dev->isYaffs2)
+-              dev->useHeaderFileSize = 1;
++      if (dev->param.is_yaffs2)
++              dev->param.use_header_file_size = 1;
+ 
+-      if (!init_failed && !yaffs_InitialiseBlocks(dev))
++      if (!init_failed && !yaffs_init_blocks(dev))
+               init_failed = 1;
+ 
+-      yaffs_InitialiseTnodes(dev);
+-      yaffs_InitialiseObjects(dev);
++      yaffs_init_tnodes_and_objs(dev);
+ 
+-      if (!init_failed && !yaffs_CreateInitialDirectories(dev))
++      if (!init_failed && !yaffs_create_initial_dir(dev))
+               init_failed = 1;
+ 
+ 
+       if (!init_failed) {
+               /* Now scan the flash. */
+-              if (dev->isYaffs2) {
+-                      if (yaffs_CheckpointRestore(dev)) {
+-                              yaffs_CheckObjectDetailsLoaded(dev->rootDir);
++              if (dev->param.is_yaffs2) {
++                      if (yaffs2_checkpt_restore(dev)) {
++                              yaffs_check_obj_details_loaded(dev->root_dir);
+                               T(YAFFS_TRACE_ALWAYS,
+                                 (TSTR("yaffs: restored from checkpoint" TENDSTR)));
+                       } else {
+@@ -7341,128 +5356,129 @@ int yaffs_GutsInitialise(yaffs_Device *d
+                               /* Clean up the mess caused by an aborted checkpoint load
+                                * and scan backwards.
+                                */
+-                              yaffs_DeinitialiseBlocks(dev);
+-                              yaffs_DeinitialiseTnodes(dev);
+-                              yaffs_DeinitialiseObjects(dev);
++                              yaffs_deinit_blocks(dev);
+ 
++                              yaffs_deinit_tnodes_and_objs(dev);
+ 
+-                              dev->nErasedBlocks = 0;
+-                              dev->nFreeChunks = 0;
+-                              dev->allocationBlock = -1;
+-                              dev->allocationPage = -1;
+-                              dev->nDeletedFiles = 0;
+-                              dev->nUnlinkedFiles = 0;
+-                              dev->nBackgroundDeletions = 0;
+-                              dev->oldestDirtySequence = 0;
++                              dev->n_erased_blocks = 0;
++                              dev->n_free_chunks = 0;
++                              dev->alloc_block = -1;
++                              dev->alloc_page = -1;
++                              dev->n_deleted_files = 0;
++                              dev->n_unlinked_files = 0;
++                              dev->n_bg_deletions = 0;
+ 
+-                              if (!init_failed && !yaffs_InitialiseBlocks(dev))
++                              if (!init_failed && !yaffs_init_blocks(dev))
+                                       init_failed = 1;
+ 
+-                              yaffs_InitialiseTnodes(dev);
+-                              yaffs_InitialiseObjects(dev);
++                              yaffs_init_tnodes_and_objs(dev);
+ 
+-                              if (!init_failed && !yaffs_CreateInitialDirectories(dev))
++                              if (!init_failed && !yaffs_create_initial_dir(dev))
+                                       init_failed = 1;
+ 
+-                              if (!init_failed && !yaffs_ScanBackwards(dev))
++                              if (!init_failed && !yaffs2_scan_backwards(dev))
+                                       init_failed = 1;
+                       }
+-              } else if (!yaffs_Scan(dev))
++              } else if (!yaffs1_scan(dev))
+                               init_failed = 1;
+ 
+-              yaffs_StripDeletedObjects(dev);
++              yaffs_strip_deleted_objs(dev);
++              yaffs_fix_hanging_objs(dev);
++              if(dev->param.empty_lost_n_found)
++                      yaffs_empty_l_n_f(dev);
+       }
+ 
+       if (init_failed) {
+               /* Clean up the mess */
+               T(YAFFS_TRACE_TRACING,
+-                (TSTR("yaffs: yaffs_GutsInitialise() aborted.\n" TENDSTR)));
++                (TSTR("yaffs: yaffs_guts_initialise() aborted.\n" TENDSTR)));
+ 
+-              yaffs_Deinitialise(dev);
++              yaffs_deinitialise(dev);
+               return YAFFS_FAIL;
+       }
+ 
+       /* Zero out stats */
+-      dev->nPageReads = 0;
+-      dev->nPageWrites = 0;
+-      dev->nBlockErasures = 0;
+-      dev->nGCCopies = 0;
+-      dev->nRetriedWrites = 0;
+-
+-      dev->nRetiredBlocks = 0;
+-
+-      yaffs_VerifyFreeChunks(dev);
+-      yaffs_VerifyBlocks(dev);
+-
++      dev->n_page_reads = 0;
++      dev->n_page_writes = 0;
++      dev->n_erasures = 0;
++      dev->n_gc_copies = 0;
++      dev->n_retired_writes = 0;
++
++      dev->n_retired_blocks = 0;
++
++      yaffs_verify_free_chunks(dev);
++      yaffs_verify_blocks(dev);
++
++      /* Clean up any aborted checkpoint data */
++      if(!dev->is_checkpointed && dev->blocks_in_checkpt > 0)
++              yaffs2_checkpt_invalidate(dev);
+ 
+       T(YAFFS_TRACE_TRACING,
+-        (TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR)));
++        (TSTR("yaffs: yaffs_guts_initialise() done.\n" TENDSTR)));
+       return YAFFS_OK;
+ 
+ }
+ 
+-void yaffs_Deinitialise(yaffs_Device *dev)
++void yaffs_deinitialise(yaffs_dev_t *dev)
+ {
+-      if (dev->isMounted) {
++      if (dev->is_mounted) {
+               int i;
+ 
+-              yaffs_DeinitialiseBlocks(dev);
+-              yaffs_DeinitialiseTnodes(dev);
+-              yaffs_DeinitialiseObjects(dev);
+-              if (dev->nShortOpCaches > 0 &&
+-                  dev->srCache) {
++              yaffs_deinit_blocks(dev);
++              yaffs_deinit_tnodes_and_objs(dev);
++              if (dev->param.n_caches > 0 &&
++                  dev->cache) {
+ 
+-                      for (i = 0; i < dev->nShortOpCaches; i++) {
+-                              if (dev->srCache[i].data)
+-                                      YFREE(dev->srCache[i].data);
+-                              dev->srCache[i].data = NULL;
++                      for (i = 0; i < dev->param.n_caches; i++) {
++                              if (dev->cache[i].data)
++                                      YFREE(dev->cache[i].data);
++                              dev->cache[i].data = NULL;
+                       }
+ 
+-                      YFREE(dev->srCache);
+-                      dev->srCache = NULL;
++                      YFREE(dev->cache);
++                      dev->cache = NULL;
+               }
+ 
+-              YFREE(dev->gcCleanupList);
++              YFREE(dev->gc_cleanup_list);
+ 
+               for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++)
+-                      YFREE(dev->tempBuffer[i].buffer);
++                      YFREE(dev->temp_buffer[i].buffer);
+ 
+-              dev->isMounted = 0;
++              dev->is_mounted = 0;
+ 
+-              if (dev->deinitialiseNAND)
+-                      dev->deinitialiseNAND(dev);
++              if (dev->param.deinitialise_flash_fn)
++                      dev->param.deinitialise_flash_fn(dev);
+       }
+ }
+ 
+-static int yaffs_CountFreeChunks(yaffs_Device *dev)
++int yaffs_count_free_chunks(yaffs_dev_t *dev)
+ {
+-      int nFree;
++      int nFree=0;
+       int b;
+ 
+-      yaffs_BlockInfo *blk;
+-
+-      for (nFree = 0, b = dev->internalStartBlock; b <= dev->internalEndBlock;
+-                      b++) {
+-              blk = yaffs_GetBlockInfo(dev, b);
++      yaffs_block_info_t *blk;
+ 
+-              switch (blk->blockState) {
++      blk = dev->block_info;
++      for (b = dev->internal_start_block; b <= dev->internal_end_block; b++) {
++              switch (blk->block_state) {
+               case YAFFS_BLOCK_STATE_EMPTY:
+               case YAFFS_BLOCK_STATE_ALLOCATING:
+               case YAFFS_BLOCK_STATE_COLLECTING:
+               case YAFFS_BLOCK_STATE_FULL:
+                       nFree +=
+-                          (dev->nChunksPerBlock - blk->pagesInUse +
+-                           blk->softDeletions);
++                          (dev->param.chunks_per_block - blk->pages_in_use +
++                           blk->soft_del_pages);
+                       break;
+               default:
+                       break;
+               }
++              blk++;
+       }
+ 
+       return nFree;
+ }
+ 
+-int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev)
++int yaffs_get_n_free_chunks(yaffs_dev_t *dev)
+ {
+       /* This is what we report to the outside world */
+ 
+@@ -7472,30 +5488,28 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De
+       int i;
+ 
+ #if 1
+-      nFree = dev->nFreeChunks;
++      nFree = dev->n_free_chunks;
+ #else
+-      nFree = yaffs_CountFreeChunks(dev);
++      nFree = yaffs_count_free_chunks(dev);
+ #endif
+ 
+-      nFree += dev->nDeletedFiles;
++      nFree += dev->n_deleted_files;
+ 
+       /* Now count the number of dirty chunks in the cache and subtract those */
+ 
+-      for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) {
+-              if (dev->srCache[i].dirty)
++      for (nDirtyCacheChunks = 0, i = 0; i < dev->param.n_caches; i++) {
++              if (dev->cache[i].dirty)
+                       nDirtyCacheChunks++;
+       }
+ 
+       nFree -= nDirtyCacheChunks;
+ 
+-      nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock);
++      nFree -= ((dev->param.n_reserved_blocks + 1) * dev->param.chunks_per_block);
+ 
+       /* Now we figure out how much to reserve for the checkpoint and report that... */
+-      blocksForCheckpoint = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
+-      if (blocksForCheckpoint < 0)
+-              blocksForCheckpoint = 0;
++      blocksForCheckpoint = yaffs_calc_checkpt_blocks_required(dev);
+ 
+-      nFree -= (blocksForCheckpoint * dev->nChunksPerBlock);
++      nFree -= (blocksForCheckpoint * dev->param.chunks_per_block);
+ 
+       if (nFree < 0)
+               nFree = 0;
+@@ -7504,49 +5518,27 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De
+ 
+ }
+ 
+-static int yaffs_freeVerificationFailures;
+-
+-static void yaffs_VerifyFreeChunks(yaffs_Device *dev)
+-{
+-      int counted;
+-      int difference;
+-
+-      if (yaffs_SkipVerification(dev))
+-              return;
+-
+-      counted = yaffs_CountFreeChunks(dev);
+-
+-      difference = dev->nFreeChunks - counted;
+-
+-      if (difference) {
+-              T(YAFFS_TRACE_ALWAYS,
+-                (TSTR("Freechunks verification failure %d %d %d" TENDSTR),
+-                 dev->nFreeChunks, counted, difference));
+-              yaffs_freeVerificationFailures++;
+-      }
+-}
+ 
+ /*---------------------------------------- YAFFS test code ----------------------*/
+ 
+-#define yaffs_CheckStruct(structure, syze, name) \
++#define yaffs_check_struct(structure, syze, name) \
+       do { \
+               if (sizeof(structure) != syze) { \
+                       T(YAFFS_TRACE_ALWAYS, (TSTR("%s should be %d but is %d\n" TENDSTR),\
+-                              name, syze, sizeof(structure))); \
++                              name, syze, (int) sizeof(structure))); \
+                       return YAFFS_FAIL; \
+               } \
+       } while (0)
+ 
+-static int yaffs_CheckStructures(void)
++static int yaffs_check_structures(void)
+ {
+-/*      yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags"); */
+-/*      yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion"); */
+-/*      yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare"); */
+-#ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG
+-      yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode");
+-#endif
++/*      yaffs_check_struct(yaffs_tags_t,8,"yaffs_tags_t"); */
++/*      yaffs_check_struct(yaffs_tags_union_t,8,"yaffs_tags_union_t"); */
++/*      yaffs_check_struct(yaffs_spare,16,"yaffs_spare"); */
++/*    yaffs_check_struct(yaffs_tnode_t, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_tnode_t"); */
++
+ #ifndef CONFIG_YAFFS_WINCE
+-      yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader");
++      yaffs_check_struct(yaffs_obj_header, 512, "yaffs_obj_header");
+ #endif
+       return YAFFS_OK;
+ }
+--- a/fs/yaffs2/yaffs_guts.h
++++ b/fs/yaffs2/yaffs_guts.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -16,8 +16,9 @@
+ #ifndef __YAFFS_GUTS_H__
+ #define __YAFFS_GUTS_H__
+ 
+-#include "devextras.h"
+ #include "yportenv.h"
++#include "devextras.h"
++#include "yaffs_list.h"
+ 
+ #define YAFFS_OK      1
+ #define YAFFS_FAIL  0
+@@ -52,7 +53,6 @@
+ 
+ #define YAFFS_MAX_CHUNK_ID            0x000FFFFF
+ 
+-#define YAFFS_UNUSED_OBJECT_ID                0x0003FFFF
+ 
+ #define YAFFS_ALLOCATION_NOBJECTS     100
+ #define YAFFS_ALLOCATION_NTNODES      100
+@@ -62,8 +62,9 @@
+ 
+ 
+ #define YAFFS_OBJECT_SPACE            0x40000
++#define YAFFS_MAX_OBJECT_ID           (YAFFS_OBJECT_SPACE -1)
+ 
+-#define YAFFS_CHECKPOINT_VERSION      3
++#define YAFFS_CHECKPOINT_VERSION      4
+ 
+ #ifdef CONFIG_YAFFS_UNICODE
+ #define YAFFS_MAX_NAME_LENGTH         127
+@@ -81,12 +82,11 @@
+ #define YAFFS_OBJECTID_UNLINKED               3
+ #define YAFFS_OBJECTID_DELETED                4
+ 
+-/* Sseudo object ids for checkpointing */
++/* Pseudo object ids for checkpointing */
+ #define YAFFS_OBJECTID_SB_HEADER      0x10
+ #define YAFFS_OBJECTID_CHECKPOINT_DATA        0x20
+ #define YAFFS_SEQUENCE_CHECKPOINT_DATA  0x21
+ 
+-/* */
+ 
+ #define YAFFS_MAX_SHORT_OP_CACHES     20
+ 
+@@ -113,18 +113,14 @@
+ 
+ /* ChunkCache is used for short read/write operations.*/
+ typedef struct {
+-      struct yaffs_ObjectStruct *object;
+-      int chunkId;
+-      int lastUse;
++      struct yaffs_obj_s *object;
++      int chunk_id;
++      int last_use;
+       int dirty;
+-      int nBytes;             /* Only valid if the cache is dirty */
++      int n_bytes;            /* Only valid if the cache is dirty */
+       int locked;             /* Can't push out or flush while locked. */
+-#ifdef CONFIG_YAFFS_YAFFS2
+       __u8 *data;
+-#else
+-      __u8 data[YAFFS_BYTES_PER_CHUNK];
+-#endif
+-} yaffs_ChunkCache;
++} yaffs_cache_t;
+ 
+ 
+ 
+@@ -135,18 +131,18 @@ typedef struct {
+ 
+ #ifndef CONFIG_YAFFS_NO_YAFFS1
+ typedef struct {
+-      unsigned chunkId:20;
+-      unsigned serialNumber:2;
+-      unsigned byteCountLSB:10;
+-      unsigned objectId:18;
++      unsigned chunk_id:20;
++      unsigned serial_number:2;
++      unsigned n_bytes_lsb:10;
++      unsigned obj_id:18;
+       unsigned ecc:12;
+-      unsigned byteCountMSB:2;
+-} yaffs_Tags;
++      unsigned n_bytes_msb:2;
++} yaffs_tags_t;
+ 
+ typedef union {
+-      yaffs_Tags asTags;
+-      __u8 asBytes[8];
+-} yaffs_TagsUnion;
++      yaffs_tags_t as_tags;
++      __u8 as_bytes[8];
++} yaffs_tags_union_t;
+ 
+ #endif
+ 
+@@ -157,7 +153,7 @@ typedef enum {
+       YAFFS_ECC_RESULT_NO_ERROR,
+       YAFFS_ECC_RESULT_FIXED,
+       YAFFS_ECC_RESULT_UNFIXED
+-} yaffs_ECCResult;
++} yaffs_ecc_result;
+ 
+ typedef enum {
+       YAFFS_OBJECT_TYPE_UNKNOWN,
+@@ -166,64 +162,64 @@ typedef enum {
+       YAFFS_OBJECT_TYPE_DIRECTORY,
+       YAFFS_OBJECT_TYPE_HARDLINK,
+       YAFFS_OBJECT_TYPE_SPECIAL
+-} yaffs_ObjectType;
++} yaffs_obj_type;
+ 
+ #define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL
+ 
+ typedef struct {
+ 
+-      unsigned validMarker0;
+-      unsigned chunkUsed;     /*  Status of the chunk: used or unused */
+-      unsigned objectId;      /* If 0 then this is not part of an object (unused) */
+-      unsigned chunkId;       /* If 0 then this is a header, else a data chunk */
+-      unsigned byteCount;     /* Only valid for data chunks */
++      unsigned validity1;
++      unsigned chunk_used;    /*  Status of the chunk: used or unused */
++      unsigned obj_id;        /* If 0 then this is not part of an object (unused) */
++      unsigned chunk_id;      /* If 0 then this is a header, else a data chunk */
++      unsigned n_bytes;       /* Only valid for data chunks */
+ 
+       /* The following stuff only has meaning when we read */
+-      yaffs_ECCResult eccResult;
+-      unsigned blockBad;
++      yaffs_ecc_result ecc_result;
++      unsigned block_bad;
+ 
+       /* YAFFS 1 stuff */
+-      unsigned chunkDeleted;  /* The chunk is marked deleted */
+-      unsigned serialNumber;  /* Yaffs1 2-bit serial number */
++      unsigned is_deleted;    /* The chunk is marked deleted */
++      unsigned serial_number; /* Yaffs1 2-bit serial number */
+ 
+       /* YAFFS2 stuff */
+-      unsigned sequenceNumber;        /* The sequence number of this block */
++      unsigned seq_number;    /* The sequence number of this block */
+ 
+       /* Extra info if this is an object header (YAFFS2 only) */
+ 
+-      unsigned extraHeaderInfoAvailable;      /* There is extra info available if this is not zero */
+-      unsigned extraParentObjectId;   /* The parent object */
+-      unsigned extraIsShrinkHeader;   /* Is it a shrink header? */
+-      unsigned extraShadows;          /* Does this shadow another object? */
++      unsigned extra_available;       /* There is extra info available if this is not zero */
++      unsigned extra_parent_id;       /* The parent object */
++      unsigned extra_is_shrink;       /* Is it a shrink header? */
++      unsigned extra_shadows;         /* Does this shadow another object? */
+ 
+-      yaffs_ObjectType extraObjectType;       /* What object type? */
++      yaffs_obj_type extra_obj_type;  /* What object type? */
+ 
+-      unsigned extraFileLength;               /* Length if it is a file */
+-      unsigned extraEquivalentObjectId;       /* Equivalent object Id if it is a hard link */
++      unsigned extra_length;          /* Length if it is a file */
++      unsigned extra_equiv_id;        /* Equivalent object Id if it is a hard link */
+ 
+-      unsigned validMarker1;
++      unsigned validty1;
+ 
+-} yaffs_ExtendedTags;
++} yaffs_ext_tags;
+ 
+ /* Spare structure for YAFFS1 */
+ typedef struct {
+-      __u8 tagByte0;
+-      __u8 tagByte1;
+-      __u8 tagByte2;
+-      __u8 tagByte3;
+-      __u8 pageStatus;        /* set to 0 to delete the chunk */
+-      __u8 blockStatus;
+-      __u8 tagByte4;
+-      __u8 tagByte5;
++      __u8 tb0;
++      __u8 tb1;
++      __u8 tb2;
++      __u8 tb3;
++      __u8 page_status;       /* set to 0 to delete the chunk */
++      __u8 block_status;
++      __u8 tb4;
++      __u8 tb5;
+       __u8 ecc1[3];
+-      __u8 tagByte6;
+-      __u8 tagByte7;
++      __u8 tb6;
++      __u8 tb7;
+       __u8 ecc2[3];
+-} yaffs_Spare;
++} yaffs_spare;
+ 
+ /*Special structure for passing through to mtd */
+-struct yaffs_NANDSpare {
+-      yaffs_Spare spare;
++struct yaffs_nand_spare {
++      yaffs_spare spare;
+       int eccres1;
+       int eccres2;
+ };
+@@ -234,6 +230,8 @@ typedef enum {
+       YAFFS_BLOCK_STATE_UNKNOWN = 0,
+ 
+       YAFFS_BLOCK_STATE_SCANNING,
++        /* Being scanned */
++
+       YAFFS_BLOCK_STATE_NEEDS_SCANNING,
+       /* The block might have something on it (ie it is allocating or full, perhaps empty)
+        * but it needs to be scanned to determine its true state.
+@@ -249,67 +247,69 @@ typedef enum {
+       /* This block is partially allocated.
+        * At least one page holds valid data.
+        * This is the one currently being used for page
+-       * allocation. Should never be more than one of these
++       * allocation. Should never be more than one of these.
++         * If a block is only partially allocated at mount it is treated as full.
+        */
+ 
+       YAFFS_BLOCK_STATE_FULL,
+       /* All the pages in this block have been allocated.
++         * If a block was only partially allocated when mounted we treat
++         * it as fully allocated.
+        */
+ 
+       YAFFS_BLOCK_STATE_DIRTY,
+-      /* All pages have been allocated and deleted.
++      /* The block was full and now all chunks have been deleted.
+        * Erase me, reuse me.
+        */
+ 
+       YAFFS_BLOCK_STATE_CHECKPOINT,
+-      /* This block is assigned to holding checkpoint data.
+-       */
++      /* This block is assigned to holding checkpoint data. */
+ 
+       YAFFS_BLOCK_STATE_COLLECTING,
+       /* This block is being garbage collected */
+ 
+       YAFFS_BLOCK_STATE_DEAD
+       /* This block has failed and is not in use */
+-} yaffs_BlockState;
++} yaffs_block_state_t;
+ 
+ #define       YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1)
+ 
+ 
+ typedef struct {
+ 
+-      int softDeletions:10;   /* number of soft deleted pages */
+-      int pagesInUse:10;      /* number of pages in use */
+-      unsigned blockState:4;  /* One of the above block states. NB use unsigned because enum is sometimes an int */
+-      __u32 needsRetiring:1;  /* Data has failed on this block, need to get valid data off */
++      int soft_del_pages:10;  /* number of soft deleted pages */
++      int pages_in_use:10;    /* number of pages in use */
++      unsigned block_state:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */
++      __u32 needs_retiring:1; /* Data has failed on this block, need to get valid data off */
+                               /* and retire the block. */
+-      __u32 skipErasedCheck:1; /* If this is set we can skip the erased check on this block */
+-      __u32 gcPrioritise:1;   /* An ECC check or blank check has failed on this block.
++      __u32 skip_erased_check:1; /* If this is set we can skip the erased check on this block */
++      __u32 gc_prioritise:1;  /* An ECC check or blank check has failed on this block.
+                                  It should be prioritised for GC */
+-      __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
++      __u32 chunk_error_strikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
+ 
+ #ifdef CONFIG_YAFFS_YAFFS2
+-      __u32 hasShrinkHeader:1; /* This block has at least one shrink object header */
+-      __u32 sequenceNumber;    /* block sequence number for yaffs2 */
++      __u32 has_shrink_hdr:1; /* This block has at least one shrink object header */
++      __u32 seq_number;        /* block sequence number for yaffs2 */
+ #endif
+ 
+-} yaffs_BlockInfo;
++} yaffs_block_info_t;
+ 
+ /* -------------------------- Object structure -------------------------------*/
+ /* This is the object structure as stored on NAND */
+ 
+ typedef struct {
+-      yaffs_ObjectType type;
++      yaffs_obj_type type;
+ 
+       /* Apply to everything  */
+-      int parentObjectId;
+-      __u16 sum__NoLongerUsed;        /* checksum of name. No longer used */
++      int parent_obj_id;
++      __u16 sum_no_longer_used;        /* checksum of name. No longer used */
+       YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
+ 
+       /* The following apply to directories, files, symlinks - not hard links */
+       __u32 yst_mode;         /* protection */
+ 
+ #ifdef CONFIG_YAFFS_WINCE
+-      __u32 notForWinCE[5];
++      __u32 not_for_wince[5];
+ #else
+       __u32 yst_uid;
+       __u32 yst_gid;
+@@ -319,10 +319,10 @@ typedef struct {
+ #endif
+ 
+       /* File size  applies to files only */
+-      int fileSize;
++      int file_size;
+ 
+       /* Equivalent object id applies to hard links only. */
+-      int equivalentObjectId;
++      int equiv_id;
+ 
+       /* Alias is for symlinks only. */
+       YCHAR alias[YAFFS_MAX_ALIAS_LENGTH + 1];
+@@ -334,40 +334,29 @@ typedef struct {
+       __u32 win_atime[2];
+       __u32 win_mtime[2];
+ #else
+-      __u32 roomToGrow[6];
++      __u32 room_to_grow[6];
+ 
+ #endif
+-      __u32 inbandShadowsObject;
+-      __u32 inbandIsShrink;
++      __u32 inband_shadowed_obj_id;
++      __u32 inband_is_shrink;
+ 
+-      __u32 reservedSpace[2];
+-      int shadowsObject;      /* This object header shadows the specified object if > 0 */
++      __u32 reserved[2];
++      int shadows_obj;        /* This object header shadows the specified object if > 0 */
+ 
+-      /* isShrink applies to object headers written when we shrink the file (ie resize) */
+-      __u32 isShrink;
++      /* is_shrink applies to object headers written when we shrink the file (ie resize) */
++      __u32 is_shrink;
+ 
+-} yaffs_ObjectHeader;
++} yaffs_obj_header;
+ 
+ /*--------------------------- Tnode -------------------------- */
+ 
+-union yaffs_Tnode_union {
+-#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
+-      union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL + 1];
+-#else
+-      union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL];
+-#endif
+-/*    __u16 level0[YAFFS_NTNODES_LEVEL0]; */
++union yaffs_tnode_union {
++      union yaffs_tnode_union *internal[YAFFS_NTNODES_INTERNAL];
+ 
+ };
+ 
+-typedef union yaffs_Tnode_union yaffs_Tnode;
++typedef union yaffs_tnode_union yaffs_tnode_t;
+ 
+-struct yaffs_TnodeList_struct {
+-      struct yaffs_TnodeList_struct *next;
+-      yaffs_Tnode *tnodes;
+-};
+-
+-typedef struct yaffs_TnodeList_struct yaffs_TnodeList;
+ 
+ /*------------------------  Object -----------------------------*/
+ /* An object can be one of:
+@@ -378,82 +367,85 @@ typedef struct yaffs_TnodeList_struct ya
+  */
+ 
+ typedef struct {
+-      __u32 fileSize;
+-      __u32 scannedFileSize;
+-      __u32 shrinkSize;
+-      int topLevel;
+-      yaffs_Tnode *top;
+-} yaffs_FileStructure;
++      __u32 file_size;
++      __u32 scanned_size;
++      __u32 shrink_size;
++      int top_level;
++      yaffs_tnode_t *top;
++} yaffs_file_s;
+ 
+ typedef struct {
+       struct ylist_head children;     /* list of child links */
+-} yaffs_DirectoryStructure;
++      struct ylist_head dirty;        /* Entry for list of dirty directories */
++} yaffs_dir_s;
+ 
+ typedef struct {
+       YCHAR *alias;
+-} yaffs_SymLinkStructure;
++} yaffs_symlink_t;
+ 
+ typedef struct {
+-      struct yaffs_ObjectStruct *equivalentObject;
+-      __u32 equivalentObjectId;
+-} yaffs_HardLinkStructure;
++      struct yaffs_obj_s *equiv_obj;
++      __u32 equiv_id;
++} yaffs_hard_link_s;
+ 
+ typedef union {
+-      yaffs_FileStructure fileVariant;
+-      yaffs_DirectoryStructure directoryVariant;
+-      yaffs_SymLinkStructure symLinkVariant;
+-      yaffs_HardLinkStructure hardLinkVariant;
+-} yaffs_ObjectVariant;
++      yaffs_file_s file_variant;
++      yaffs_dir_s dir_variant;
++      yaffs_symlink_t symlink_variant;
++      yaffs_hard_link_s hardlink_variant;
++} yaffs_obj_variant;
++
++
+ 
+-struct yaffs_ObjectStruct {
++struct yaffs_obj_s {
+       __u8 deleted:1;         /* This should only apply to unlinked files. */
+-      __u8 softDeleted:1;     /* it has also been soft deleted */
++      __u8 soft_del:1;        /* it has also been soft deleted */
+       __u8 unlinked:1;        /* An unlinked file. The file should be in the unlinked directory.*/
+       __u8 fake:1;            /* A fake object has no presence on NAND. */
+-      __u8 renameAllowed:1;   /* Some objects are not allowed to be renamed. */
+-      __u8 unlinkAllowed:1;
++      __u8 rename_allowed:1;  /* Some objects are not allowed to be renamed. */
++      __u8 unlink_allowed:1;
+       __u8 dirty:1;           /* the object needs to be written to flash */
+       __u8 valid:1;           /* When the file system is being loaded up, this
+                                * object might be created before the data
+                                * is available (ie. file data records appear before the header).
+                                */
+-      __u8 lazyLoaded:1;      /* This object has been lazy loaded and is missing some detail */
++      __u8 lazy_loaded:1;     /* This object has been lazy loaded and is missing some detail */
+ 
+-      __u8 deferedFree:1;     /* For Linux kernel. Object is removed from NAND, but is
++      __u8 defered_free:1;    /* For Linux kernel. Object is removed from NAND, but is
+                                * still in the inode cache. Free of object is defered.
+                                * until the inode is released.
+                                */
+-      __u8 beingCreated:1;    /* This object is still being created so skip some checks. */
++      __u8 being_created:1;   /* This object is still being created so skip some checks. */
++      __u8 is_shadowed:1;     /* This object is shadowed on the way to being renamed. */
++
++      __u8 xattr_known:1;     /* We know if this has object has xattribs or not. */
++      __u8 has_xattr:1;       /* This object has xattribs. Valid if xattr_known. */
+ 
+       __u8 serial;            /* serial number of chunk in NAND. Cached here */
+       __u16 sum;              /* sum of the name to speed searching */
+ 
+-      struct yaffs_DeviceStruct *myDev;       /* The device I'm on */
++      struct yaffs_dev_s *my_dev;       /* The device I'm on */
+ 
+-      struct ylist_head hashLink;     /* list of objects in this hash bucket */
++      struct ylist_head hash_link;     /* list of objects in this hash bucket */
+ 
+-      struct ylist_head hardLinks;    /* all the equivalent hard linked objects */
++      struct ylist_head hard_links;    /* all the equivalent hard linked objects */
+ 
+       /* directory structure stuff */
+       /* also used for linking up the free list */
+-      struct yaffs_ObjectStruct *parent;
++      struct yaffs_obj_s *parent;
+       struct ylist_head siblings;
+ 
+       /* Where's my object header in NAND? */
+-      int hdrChunk;
++      int hdr_chunk;
+ 
+-      int nDataChunks;        /* Number of data chunks attached to the file. */
++      int n_data_chunks;      /* Number of data chunks attached to the file. */
+ 
+-      __u32 objectId;         /* the object id value */
++      __u32 obj_id;           /* the object id value */
+ 
+       __u32 yst_mode;
+ 
+ #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
+-      YCHAR shortName[YAFFS_SHORT_NAME_LENGTH + 1];
+-#endif
+-
+-#ifndef __KERNEL__
+-      __u32 inUse;
++      YCHAR short_name[YAFFS_SHORT_NAME_LENGTH + 1];
+ #endif
+ 
+ #ifdef CONFIG_YAFFS_WINCE
+@@ -470,53 +462,43 @@ struct yaffs_ObjectStruct {
+ 
+       __u32 yst_rdev;
+ 
+-#ifdef __KERNEL__
+-      struct inode *myInode;
++      void *my_inode;
+ 
+-#endif
++      yaffs_obj_type variant_type;
+ 
+-      yaffs_ObjectType variantType;
++      yaffs_obj_variant variant;
+ 
+-      yaffs_ObjectVariant variant;
+-
+-};
+-
+-typedef struct yaffs_ObjectStruct yaffs_Object;
+-
+-struct yaffs_ObjectList_struct {
+-      yaffs_Object *objects;
+-      struct yaffs_ObjectList_struct *next;
+ };
+ 
+-typedef struct yaffs_ObjectList_struct yaffs_ObjectList;
++typedef struct yaffs_obj_s yaffs_obj_t;
+ 
+ typedef struct {
+       struct ylist_head list;
+       int count;
+-} yaffs_ObjectBucket;
++} yaffs_obj_bucket;
+ 
+ 
+-/* yaffs_CheckpointObject holds the definition of an object as dumped
++/* yaffs_checkpt_obj_t holds the definition of an object as dumped
+  * by checkpointing.
+  */
+ 
+ typedef struct {
+-      int structType;
+-      __u32 objectId;
+-      __u32 parentId;
+-      int hdrChunk;
+-      yaffs_ObjectType variantType:3;
++      int struct_type;
++      __u32 obj_id;
++      __u32 parent_id;
++      int hdr_chunk;
++      yaffs_obj_type variant_type:3;
+       __u8 deleted:1;
+-      __u8 softDeleted:1;
++      __u8 soft_del:1;
+       __u8 unlinked:1;
+       __u8 fake:1;
+-      __u8 renameAllowed:1;
+-      __u8 unlinkAllowed:1;
++      __u8 rename_allowed:1;
++      __u8 unlink_allowed:1;
+       __u8 serial;
+ 
+-      int nDataChunks;
+-      __u32 fileSizeOrEquivalentObjectId;
+-} yaffs_CheckpointObject;
++      int n_data_chunks;
++      __u32 size_or_equiv_obj;
++} yaffs_checkpt_obj_t;
+ 
+ /*--------------------- Temporary buffers ----------------
+  *
+@@ -526,379 +508,462 @@ typedef struct {
+ typedef struct {
+       __u8 *buffer;
+       int line;       /* track from whence this buffer was allocated */
+-      int maxLine;
+-} yaffs_TempBuffer;
++      int max_line;
++} yaffs_buffer_t;
+ 
+ /*----------------- Device ---------------------------------*/
+ 
+-struct yaffs_DeviceStruct {
+-      struct ylist_head devList;
+-      const char *name;
+-
+-      /* Entry parameters set up way early. Yaffs sets up the rest.*/
+-      int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */
+-      int nChunksPerBlock;    /* does not need to be a power of 2 */
+-      int spareBytesPerChunk; /* spare area size */
+-      int startBlock;         /* Start block we're allowed to use */
+-      int endBlock;           /* End block we're allowed to use */
+-      int nReservedBlocks;    /* We want this tuneable so that we can reduce */
+-                              /* reserved blocks on NOR and RAM. */
+-
+ 
+-      /* Stuff used by the shared space checkpointing mechanism */
+-      /* If this value is zero, then this mechanism is disabled */
++struct yaffs_param_s {
++      const YCHAR *name;
+ 
+-/*    int nCheckpointReservedBlocks; */ /* Blocks to reserve for checkpoint data */
++      /*
++         * Entry parameters set up way early. Yaffs sets up the rest.
++         * The structure should be zeroed out before use so that unused
++         * and defualt values are zero.
++         */
++
++      int inband_tags;          /* Use unband tags */
++      __u32 total_bytes_per_chunk; /* Should be >= 512, does not need to be a power of 2 */
++      int chunks_per_block;   /* does not need to be a power of 2 */
++      int spare_bytes_per_chunk;      /* spare area size */
++      int start_block;                /* Start block we're allowed to use */
++      int end_block;          /* End block we're allowed to use */
++      int n_reserved_blocks;  /* We want this tuneable so that we can reduce */
++                              /* reserved blocks on NOR and RAM. */
+ 
+ 
+-      int nShortOpCaches;     /* If <= 0, then short op caching is disabled, else
+-                               * the number of short op caches (don't use too many)
++      int n_caches;   /* If <= 0, then short op caching is disabled, else
++                               * the number of short op caches (don't use too many).
++                                 * 10 to 20 is a good bet.
+                                */
++      int use_nand_ecc;               /* Flag to decide whether or not to use NANDECC on data (yaffs1) */
++      int no_tags_ecc;                /* Flag to decide whether or not to do ECC on packed tags (yaffs2) */ 
+ 
+-      int useHeaderFileSize;  /* Flag to determine if we should use file sizes from the header */
++      int is_yaffs2;           /* Use yaffs2 mode on this device */
+ 
+-      int useNANDECC;         /* Flag to decide whether or not to use NANDECC */
++      int empty_lost_n_found;  /* Auto-empty lost+found directory on mount */
+ 
+-      void *genericDevice;    /* Pointer to device context
+-                               * On an mtd this holds the mtd pointer.
+-                               */
+-      void *superBlock;
++      int refresh_period;     /* How often we should check to do a block refresh */
++
++      /* Checkpoint control. Can be set before or after initialisation */
++      __u8 skip_checkpt_rd;
++      __u8 skip_checkpt_wr;
++
++      int enable_xattr;       /* Enable xattribs */
+ 
+       /* NAND access functions (Must be set before calling YAFFS)*/
+ 
+-      int (*writeChunkToNAND) (struct yaffs_DeviceStruct *dev,
+-                                      int chunkInNAND, const __u8 *data,
+-                                      const yaffs_Spare *spare);
+-      int (*readChunkFromNAND) (struct yaffs_DeviceStruct *dev,
+-                                      int chunkInNAND, __u8 *data,
+-                                      yaffs_Spare *spare);
+-      int (*eraseBlockInNAND) (struct yaffs_DeviceStruct *dev,
+-                                      int blockInNAND);
+-      int (*initialiseNAND) (struct yaffs_DeviceStruct *dev);
+-      int (*deinitialiseNAND) (struct yaffs_DeviceStruct *dev);
++      int (*write_chunk_fn) (struct yaffs_dev_s *dev,
++                                      int nand_chunk, const __u8 *data,
++                                      const yaffs_spare *spare);
++      int (*read_chunk_fn) (struct yaffs_dev_s *dev,
++                                      int nand_chunk, __u8 *data,
++                                      yaffs_spare *spare);
++      int (*erase_fn) (struct yaffs_dev_s *dev,
++                                      int flash_block);
++      int (*initialise_flash_fn) (struct yaffs_dev_s *dev);
++      int (*deinitialise_flash_fn) (struct yaffs_dev_s *dev);
+ 
+ #ifdef CONFIG_YAFFS_YAFFS2
+-      int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct *dev,
+-                                       int chunkInNAND, const __u8 *data,
+-                                       const yaffs_ExtendedTags *tags);
+-      int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct *dev,
+-                                        int chunkInNAND, __u8 *data,
+-                                        yaffs_ExtendedTags *tags);
+-      int (*markNANDBlockBad) (struct yaffs_DeviceStruct *dev, int blockNo);
+-      int (*queryNANDBlock) (struct yaffs_DeviceStruct *dev, int blockNo,
+-                             yaffs_BlockState *state, __u32 *sequenceNumber);
+-#endif
+-
+-      int isYaffs2;
+-
+-      /* The removeObjectCallback function must be supplied by OS flavours that
+-       * need it. The Linux kernel does not use this, but yaffs direct does use
+-       * it to implement the faster readdir
++      int (*write_chunk_tags_fn) (struct yaffs_dev_s *dev,
++                                       int nand_chunk, const __u8 *data,
++                                       const yaffs_ext_tags *tags);
++      int (*read_chunk_tags_fn) (struct yaffs_dev_s *dev,
++                                        int nand_chunk, __u8 *data,
++                                        yaffs_ext_tags *tags);
++      int (*bad_block_fn) (struct yaffs_dev_s *dev, int block_no);
++      int (*query_block_fn) (struct yaffs_dev_s *dev, int block_no,
++                             yaffs_block_state_t *state, __u32 *seq_number);
++#endif
++
++      /* The remove_obj_fn function must be supplied by OS flavours that
++       * need it.
++         * yaffs direct uses it to implement the faster readdir.
++         * Linux uses it to protect the directory during unlocking.
+        */
+-      void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj);
++      void (*remove_obj_fn)(struct yaffs_obj_s *obj);
+ 
+-      /* Callback to mark the superblock dirsty */
+-      void (*markSuperBlockDirty)(void *superblock);
++      /* Callback to mark the superblock dirty */
++      void (*sb_dirty_fn)(struct yaffs_dev_s *dev);
++      
++      /*  Callback to control garbage collection. */
++      unsigned (*gc_control)(struct yaffs_dev_s *dev);
++
++        /* Debug control flags. Don't use unless you know what you're doing */
++      int use_header_file_size;       /* Flag to determine if we should use file sizes from the header */
++      int disable_lazy_load;  /* Disable lazy loading on this device */
++      int wide_tnodes_disabled; /* Set to disable wide tnodes */
++      int disable_soft_del;  /* yaffs 1 only: Set to disable the use of softdeletion. */
++      
++      int defered_dir_update; /* Set to defer directory updates */
+ 
+-      int wideTnodesDisabled; /* Set to disable wide tnodes */
++#ifdef CONFIG_YAFFS_AUTO_UNICODE
++      int auto_unicode;
++#endif
++      int always_check_erased; /* Force chunk erased check always on */
++};
+ 
+-      YCHAR *pathDividers;    /* String of legal path dividers */
++typedef struct yaffs_param_s yaffs_param_t;
+ 
++struct yaffs_dev_s {
++      struct yaffs_param_s param;
+ 
+-      /* End of stuff that must be set before initialisation. */
++        /* Context storage. Holds extra OS specific data for this device */
+ 
+-      /* Checkpoint control. Can be set before or after initialisation */
+-      __u8 skipCheckpointRead;
+-      __u8 skipCheckpointWrite;
++      void *os_context;
++      void *driver_context;
++
++      struct ylist_head dev_list;
+ 
+       /* Runtime parameters. Set up by YAFFS. */
++      int data_bytes_per_chunk;       
+ 
+-      __u16 chunkGroupBits;   /* 0 for devices <= 32MB. else log2(nchunks) - 16 */
+-      __u16 chunkGroupSize;   /* == 2^^chunkGroupBits */
++        /* Non-wide tnode stuff */
++      __u16 chunk_grp_bits;   /* Number of bits that need to be resolved if
++                                 * the tnodes are not wide enough.
++                                 */
++      __u16 chunk_grp_size;   /* == 2^^chunk_grp_bits */
+ 
+       /* Stuff to support wide tnodes */
+-      __u32 tnodeWidth;
+-      __u32 tnodeMask;
++      __u32 tnode_width;
++      __u32 tnode_mask;
++      __u32 tnode_size;
+ 
+       /* Stuff for figuring out file offset to chunk conversions */
+-      __u32 chunkShift; /* Shift value */
+-      __u32 chunkDiv;   /* Divisor after shifting: 1 for power-of-2 sizes */
+-      __u32 chunkMask;  /* Mask to use for power-of-2 case */
+-
+-      /* Stuff to handle inband tags */
+-      int inbandTags;
+-      __u32 totalBytesPerChunk;
+-
+-#ifdef __KERNEL__
+-
+-      struct semaphore sem;   /* Semaphore for waiting on erasure.*/
+-      struct semaphore grossLock;     /* Gross locking semaphore */
+-      __u8 *spareBuffer;      /* For mtdif2 use. Don't know the size of the buffer
+-                               * at compile time so we have to allocate it.
+-                               */
+-      void (*putSuperFunc) (struct super_block *sb);
+-#endif
++      __u32 chunk_shift; /* Shift value */
++      __u32 chunk_div;   /* Divisor after shifting: 1 for power-of-2 sizes */
++      __u32 chunk_mask;  /* Mask to use for power-of-2 case */
+ 
+-      int isMounted;
+ 
+-      int isCheckpointed;
++
++      int is_mounted;
++      int read_only;
++      int is_checkpointed;
+ 
+ 
+       /* Stuff to support block offsetting to support start block zero */
+-      int internalStartBlock;
+-      int internalEndBlock;
+-      int blockOffset;
+-      int chunkOffset;
++      int internal_start_block;
++      int internal_end_block;
++      int block_offset;
++      int chunk_offset;
+ 
+ 
+       /* Runtime checkpointing stuff */
+-      int checkpointPageSequence;   /* running sequence number of checkpoint pages */
+-      int checkpointByteCount;
+-      int checkpointByteOffset;
+-      __u8 *checkpointBuffer;
+-      int checkpointOpenForWrite;
+-      int blocksInCheckpoint;
+-      int checkpointCurrentChunk;
+-      int checkpointCurrentBlock;
+-      int checkpointNextBlock;
+-      int *checkpointBlockList;
+-      int checkpointMaxBlocks;
+-      __u32 checkpointSum;
+-      __u32 checkpointXor;
++      int checkpt_page_seq;   /* running sequence number of checkpoint pages */
++      int checkpt_byte_count;
++      int checkpt_byte_offs;
++      __u8 *checkpt_buffer;
++      int checkpt_open_write;
++      int blocks_in_checkpt;
++      int checkpt_cur_chunk;
++      int checkpt_cur_block;
++      int checkpt_next_block;
++      int *checkpt_block_list;
++      int checkpt_max_blocks;
++      __u32 checkpt_sum;
++      __u32 checkpt_xor;
+ 
+-      int nCheckpointBlocksRequired; /* Number of blocks needed to store current checkpoint set */
++      int checkpoint_blocks_required; /* Number of blocks needed to store current checkpoint set */
+ 
+       /* Block Info */
+-      yaffs_BlockInfo *blockInfo;
+-      __u8 *chunkBits;        /* bitmap of chunks in use */
+-      unsigned blockInfoAlt:1;        /* was allocated using alternative strategy */
+-      unsigned chunkBitsAlt:1;        /* was allocated using alternative strategy */
+-      int chunkBitmapStride;  /* Number of bytes of chunkBits per block.
+-                               * Must be consistent with nChunksPerBlock.
++      yaffs_block_info_t *block_info;
++      __u8 *chunk_bits;       /* bitmap of chunks in use */
++      unsigned block_info_alt:1;      /* was allocated using alternative strategy */
++      unsigned chunk_bits_alt:1;      /* was allocated using alternative strategy */
++      int chunk_bit_stride;   /* Number of bytes of chunk_bits per block.
++                               * Must be consistent with chunks_per_block.
+                                */
+ 
+-      int nErasedBlocks;
+-      int allocationBlock;    /* Current block being allocated off */
+-      __u32 allocationPage;
+-      int allocationBlockFinder;      /* Used to search for next allocation block */
+-
+-      /* Runtime state */
+-      int nTnodesCreated;
+-      yaffs_Tnode *freeTnodes;
+-      int nFreeTnodes;
+-      yaffs_TnodeList *allocatedTnodeList;
+-
+-      int isDoingGC;
+-      int gcBlock;
+-      int gcChunk;
+-
+-      int nObjectsCreated;
+-      yaffs_Object *freeObjects;
+-      int nFreeObjects;
+-
+-      int nHardLinks;
+-
+-      yaffs_ObjectList *allocatedObjectList;
+-
+-      yaffs_ObjectBucket objectBucket[YAFFS_NOBJECT_BUCKETS];
+-
+-      int nFreeChunks;
+-
+-      int currentDirtyChecker;        /* Used to find current dirtiest block */
+-
+-      __u32 *gcCleanupList;   /* objects to delete at the end of a GC. */
+-      int nonAggressiveSkip;  /* GC state/mode */
+-
+-      /* Statistcs */
+-      int nPageWrites;
+-      int nPageReads;
+-      int nBlockErasures;
+-      int nErasureFailures;
+-      int nGCCopies;
+-      int garbageCollections;
+-      int passiveGarbageCollections;
+-      int nRetriedWrites;
+-      int nRetiredBlocks;
+-      int eccFixed;
+-      int eccUnfixed;
+-      int tagsEccFixed;
+-      int tagsEccUnfixed;
+-      int nDeletions;
+-      int nUnmarkedDeletions;
+-
+-      int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */
++      int n_erased_blocks;
++      int alloc_block;        /* Current block being allocated off */
++      __u32 alloc_page;
++      int alloc_block_finder; /* Used to search for next allocation block */
++
++      /* Object and Tnode memory management */
++      void *allocator;
++      int n_obj;
++      int n_tnodes;
++
++      int n_hardlinks;
++
++      yaffs_obj_bucket obj_bucket[YAFFS_NOBJECT_BUCKETS];
++      __u32 bucket_finder;
++
++      int n_free_chunks;
++
++      /* Garbage collection control */
++      __u32 *gc_cleanup_list; /* objects to delete at the end of a GC. */
++      __u32 n_clean_ups;
++
++      unsigned has_pending_prioritised_gc; /* We think this device might have pending prioritised gcs */
++      unsigned gc_disable;
++      unsigned gc_block_finder;
++      unsigned gc_dirtiest;
++      unsigned gc_pages_in_use;
++      unsigned gc_not_done;
++      unsigned gc_block;
++      unsigned gc_chunk;
++      unsigned gc_skip;
+ 
+       /* Special directories */
+-      yaffs_Object *rootDir;
+-      yaffs_Object *lostNFoundDir;
++      yaffs_obj_t *root_dir;
++      yaffs_obj_t *lost_n_found;
+ 
+       /* Buffer areas for storing data to recover from write failures TODO
+-       *      __u8            bufferedData[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK];
+-       *      yaffs_Spare bufferedSpare[YAFFS_CHUNKS_PER_BLOCK];
++       *      __u8            buffered_data[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK];
++       *      yaffs_spare buffered_spare[YAFFS_CHUNKS_PER_BLOCK];
+        */
+ 
+-      int bufferedBlock;      /* Which block is buffered here? */
+-      int doingBufferedBlockRewrite;
+-
+-      yaffs_ChunkCache *srCache;
+-      int srLastUse;
++      int buffered_block;     /* Which block is buffered here? */
++      int doing_buffered_block_rewrite;
+ 
+-      int cacheHits;
++      yaffs_cache_t *cache;
++      int cache_last_use;
+ 
+       /* Stuff for background deletion and unlinked files.*/
+-      yaffs_Object *unlinkedDir;      /* Directory where unlinked and deleted files live. */
+-      yaffs_Object *deletedDir;       /* Directory where deleted objects are sent to disappear. */
+-      yaffs_Object *unlinkedDeletion; /* Current file being background deleted.*/
+-      int nDeletedFiles;              /* Count of files awaiting deletion;*/
+-      int nUnlinkedFiles;             /* Count of unlinked files. */
+-      int nBackgroundDeletions;       /* Count of background deletions. */
+-
++      yaffs_obj_t *unlinked_dir;      /* Directory where unlinked and deleted files live. */
++      yaffs_obj_t *del_dir;   /* Directory where deleted objects are sent to disappear. */
++      yaffs_obj_t *unlinked_deletion; /* Current file being background deleted.*/
++      int n_deleted_files;            /* Count of files awaiting deletion;*/
++      int n_unlinked_files;           /* Count of unlinked files. */
++      int n_bg_deletions;     /* Count of background deletions. */
+ 
+       /* Temporary buffer management */
+-      yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS];
+-      int maxTemp;
+-      int tempInUse;
+-      int unmanagedTempAllocations;
+-      int unmanagedTempDeallocations;
++      yaffs_buffer_t temp_buffer[YAFFS_N_TEMP_BUFFERS];
++      int max_temp;
++      int temp_in_use;
++      int unmanaged_buffer_allocs;
++      int unmanaged_buffer_deallocs;
+ 
+       /* yaffs2 runtime stuff */
+-      unsigned sequenceNumber;        /* Sequence number of currently allocating block */
+-      unsigned oldestDirtySequence;
++      unsigned seq_number;    /* Sequence number of currently allocating block */
++      unsigned oldest_dirty_seq;
++      unsigned oldest_dirty_block;
++
++      /* Block refreshing */
++      int refresh_skip;       /* A skip down counter. Refresh happens when this gets to zero. */
++
++      /* Dirty directory handling */
++      struct ylist_head dirty_dirs; /* List of dirty directories */
++
++
++      /* Statistcs */
++      __u32 n_page_writes;
++      __u32 n_page_reads;
++      __u32 n_erasures;
++      __u32 n_erase_failures;
++      __u32 n_gc_copies;
++      __u32 all_gcs;
++      __u32 passive_gc_count;
++      __u32 oldest_dirty_gc_count;
++      __u32 n_gc_blocks;
++      __u32 bg_gcs;
++      __u32 n_retired_writes;
++      __u32 n_retired_blocks;
++      __u32 n_ecc_fixed;
++      __u32 n_ecc_unfixed;
++      __u32 n_tags_ecc_fixed;
++      __u32 n_tags_ecc_unfixed;
++      __u32 n_deletions;
++      __u32 n_unmarked_deletions;
++      __u32 refresh_count;
++      __u32 cache_hits;
+ 
+ };
+ 
+-typedef struct yaffs_DeviceStruct yaffs_Device;
++typedef struct yaffs_dev_s yaffs_dev_t;
+ 
+ /* The static layout of block usage etc is stored in the super block header */
+ typedef struct {
+       int StructType;
+       int version;
+-      int checkpointStartBlock;
+-      int checkpointEndBlock;
+-      int startBlock;
+-      int endBlock;
++      int checkpt_start_block;
++      int checkpt_end_block;
++      int start_block;
++      int end_block;
+       int rfu[100];
+-} yaffs_SuperBlockHeader;
++} yaffs_sb_header;
+ 
+ /* The CheckpointDevice structure holds the device information that changes at runtime and
+  * must be preserved over unmount/mount cycles.
+  */
+ typedef struct {
+-      int structType;
+-      int nErasedBlocks;
+-      int allocationBlock;    /* Current block being allocated off */
+-      __u32 allocationPage;
+-      int nFreeChunks;
+-
+-      int nDeletedFiles;              /* Count of files awaiting deletion;*/
+-      int nUnlinkedFiles;             /* Count of unlinked files. */
+-      int nBackgroundDeletions;       /* Count of background deletions. */
++      int struct_type;
++      int n_erased_blocks;
++      int alloc_block;        /* Current block being allocated off */
++      __u32 alloc_page;
++      int n_free_chunks;
++
++      int n_deleted_files;            /* Count of files awaiting deletion;*/
++      int n_unlinked_files;           /* Count of unlinked files. */
++      int n_bg_deletions;     /* Count of background deletions. */
+ 
+       /* yaffs2 runtime stuff */
+-      unsigned sequenceNumber;        /* Sequence number of currently allocating block */
+-      unsigned oldestDirtySequence;
++      unsigned seq_number;    /* Sequence number of currently allocating block */
+ 
+-} yaffs_CheckpointDevice;
++} yaffs_checkpt_dev_t;
+ 
+ 
+ typedef struct {
+-      int structType;
++      int struct_type;
+       __u32 magic;
+       __u32 version;
+       __u32 head;
+-} yaffs_CheckpointValidity;
++} yaffs_checkpt_validty_t;
++
++
++struct yaffs_shadow_fixer_s {
++      int obj_id;
++      int shadowed_id;
++      struct yaffs_shadow_fixer_s *next;
++};
++
++/* Structure for doing xattr modifications */
++typedef struct {
++      int set; /* If 0 then this is a deletion */
++      const YCHAR *name;
++      const void *data;
++      int size;
++      int flags;
++      int result;
++}yaffs_xattr_mod;
+ 
+ 
+ /*----------------------- YAFFS Functions -----------------------*/
+ 
+-int yaffs_GutsInitialise(yaffs_Device *dev);
+-void yaffs_Deinitialise(yaffs_Device *dev);
++int yaffs_guts_initialise(yaffs_dev_t *dev);
++void yaffs_deinitialise(yaffs_dev_t *dev);
+ 
+-int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev);
++int yaffs_get_n_free_chunks(yaffs_dev_t *dev);
+ 
+-int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName,
+-                     yaffs_Object *newDir, const YCHAR *newName);
++int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name,
++                     yaffs_obj_t *new_dir, const YCHAR *new_name);
+ 
+-int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name);
+-int yaffs_DeleteObject(yaffs_Object *obj);
++int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name);
++int yaffs_del_obj(yaffs_obj_t *obj);
+ 
+-int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize);
+-int yaffs_GetObjectFileLength(yaffs_Object *obj);
+-int yaffs_GetObjectInode(yaffs_Object *obj);
+-unsigned yaffs_GetObjectType(yaffs_Object *obj);
+-int yaffs_GetObjectLinkCount(yaffs_Object *obj);
++int yaffs_get_obj_name(yaffs_obj_t *obj, YCHAR *name, int buffer_size);
++int yaffs_get_obj_length(yaffs_obj_t *obj);
++int yaffs_get_obj_inode(yaffs_obj_t *obj);
++unsigned yaffs_get_obj_type(yaffs_obj_t *obj);
++int yaffs_get_obj_link_count(yaffs_obj_t *obj);
+ 
+-int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr);
+-int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr);
++int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr);
++int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr);
+ 
+ /* File operations */
+-int yaffs_ReadDataFromFile(yaffs_Object *obj, __u8 *buffer, loff_t offset,
+-                              int nBytes);
+-int yaffs_WriteDataToFile(yaffs_Object *obj, const __u8 *buffer, loff_t offset,
+-                              int nBytes, int writeThrough);
+-int yaffs_ResizeFile(yaffs_Object *obj, loff_t newSize);
++int yaffs_file_rd(yaffs_obj_t *obj, __u8 *buffer, loff_t offset,
++                              int n_bytes);
++int yaffs_wr_file(yaffs_obj_t *obj, const __u8 *buffer, loff_t offset,
++                              int n_bytes, int write_trhrough);
++int yaffs_resize_file(yaffs_obj_t *obj, loff_t new_size);
+ 
+-yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name,
++yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name,
+                               __u32 mode, __u32 uid, __u32 gid);
+-int yaffs_FlushFile(yaffs_Object *obj, int updateTime);
++
++int yaffs_flush_file(yaffs_obj_t *obj, int update_time, int data_sync);
+ 
+ /* Flushing and checkpointing */
+-void yaffs_FlushEntireDeviceCache(yaffs_Device *dev);
++void yaffs_flush_whole_cache(yaffs_dev_t *dev);
+ 
+-int yaffs_CheckpointSave(yaffs_Device *dev);
+-int yaffs_CheckpointRestore(yaffs_Device *dev);
++int yaffs_checkpoint_save(yaffs_dev_t *dev);
++int yaffs_checkpoint_restore(yaffs_dev_t *dev);
+ 
+ /* Directory operations */
+-yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name,
++yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name,
+                               __u32 mode, __u32 uid, __u32 gid);
+-yaffs_Object *yaffs_FindObjectByName(yaffs_Object *theDir, const YCHAR *name);
+-int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir,
+-                                 int (*fn) (yaffs_Object *));
++yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *the_dir, const YCHAR *name);
++int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir,
++                                 int (*fn) (yaffs_obj_t *));
+ 
+-yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number);
++yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number);
+ 
+ /* Link operations */
+-yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name,
+-                       yaffs_Object *equivalentObject);
++yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name,
++                       yaffs_obj_t *equiv_obj);
+ 
+-yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj);
++yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj);
+ 
+ /* Symlink operations */
+-yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name,
++yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name,
+                                __u32 mode, __u32 uid, __u32 gid,
+                                const YCHAR *alias);
+-YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj);
++YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj);
+ 
+ /* Special inodes (fifos, sockets and devices) */
+-yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name,
++yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name,
+                                __u32 mode, __u32 uid, __u32 gid, __u32 rdev);
+ 
++
++int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags);
++int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size);
++int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size);
++int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name);
++
+ /* Special directories */
+-yaffs_Object *yaffs_Root(yaffs_Device *dev);
+-yaffs_Object *yaffs_LostNFound(yaffs_Device *dev);
++yaffs_obj_t *yaffs_root(yaffs_dev_t *dev);
++yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev);
+ 
+ #ifdef CONFIG_YAFFS_WINCE
+ /* CONFIG_YAFFS_WINCE special stuff */
+-void yfsd_WinFileTimeNow(__u32 target[2]);
++void yfsd_win_file_time_now(__u32 target[2]);
+ #endif
+ 
+-#ifdef __KERNEL__
++void yaffs_handle_defered_free(yaffs_obj_t *obj);
+ 
+-void yaffs_HandleDeferedFree(yaffs_Object *obj);
+-#endif
++void yaffs_update_dirty_dirs(yaffs_dev_t *dev);
++
++int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency);
+ 
+ /* Debug dump  */
+-int yaffs_DumpObject(yaffs_Object *obj);
++int yaffs_dump_obj(yaffs_obj_t *obj);
+ 
+-void yaffs_GutsTest(yaffs_Device *dev);
++void yaffs_guts_test(yaffs_dev_t *dev);
+ 
+-/* A few useful functions */
+-void yaffs_InitialiseTags(yaffs_ExtendedTags *tags);
+-void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn);
+-int yaffs_CheckFF(__u8 *buffer, int nBytes);
+-void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi);
++/* A few useful functions to be used within the core files*/
++void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn);
++int yaffs_check_ff(__u8 *buffer, int n_bytes);
++void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi);
++
++__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no);
++void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, int line_no);
++
++yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev,
++                                              int number,
++                                              yaffs_obj_type type);
++int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk,
++                              int nand_chunk, int in_scan);
++void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name);
++void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh);
++void yaffs_add_obj_to_dir(yaffs_obj_t *directory,
++                                      yaffs_obj_t *obj);
++YCHAR *yaffs_clone_str(const YCHAR *str);
++void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list);
++void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no);
++int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name,
++                              int force, int is_shrink, int shadows,
++                                yaffs_xattr_mod *xop);
++void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id,
++                              int backward_scanning);
++int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks);
++yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev);
++yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev,
++                                      yaffs_file_s *file_struct,
++                                      __u32 chunk_id,
++                                      yaffs_tnode_t *passed_tn);
++
++int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset,
++                      int n_bytes, int write_trhrough);
++void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size);
++void yaffs_skip_rest_of_block(yaffs_dev_t *dev);
++
++int yaffs_count_free_chunks(yaffs_dev_t *dev);
++
++yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev,
++                              yaffs_file_s *file_struct,
++                              __u32 chunk_id);
+ 
+-__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo);
+-void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, int lineNo);
++__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos);
+ 
+ #endif
+--- a/fs/yaffs2/yaffsinterface.h
++++ b/fs/yaffs2/yaffsinterface.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -16,6 +16,6 @@
+ #ifndef __YAFFSINTERFACE_H__
+ #define __YAFFSINTERFACE_H__
+ 
+-int yaffs_Initialise(unsigned nBlocks);
++int yaffs_initialise(unsigned nBlocks);
+ 
+ #endif
+--- /dev/null
++++ b/fs/yaffs2/yaffs_linux_allocator.c
+@@ -0,0 +1,200 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ *
++ * Note: Tis code is currently unused. Being checked in in case it becomes useful.
++ */
++
++
++#include "yaffs_allocator.h"
++#include "yaffs_guts.h"
++#include "yaffs_trace.h"
++#include "yportenv.h"
++#include "yaffs_linux.h"
++/*
++ * Start out with the same allocator as yaffs direct.
++ * Todo: Change to Linux slab allocator.
++ */
++
++
++
++#define NAMELEN  20
++struct yaffs_AllocatorStruct {
++      char tnode_name[NAMELEN+1];
++      char object_name[NAMELEN+1];
++      struct kmem_cache *tnode_cache;
++      struct kmem_cache *object_cache;
++};
++
++typedef struct yaffs_AllocatorStruct yaffs_Allocator;
++
++int mount_id;
++
++void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev)
++{
++      yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
++
++      T(YAFFS_TRACE_ALLOCATE,(TSTR("Deinitialising yaffs allocator\n")));
++
++      if(allocator){
++              if(allocator->tnode_cache){
++                      kmem_cache_destroy(allocator->tnode_cache);
++                      allocator->tnode_cache = NULL;
++              } else {
++                      T(YAFFS_TRACE_ALWAYS,
++                              (TSTR("NULL tnode cache\n")));
++                      YBUG();
++              }
++
++              if(allocator->object_cache){
++                      kmem_cache_destroy(allocator->object_cache);
++                      allocator->object_cache = NULL;
++              } else {
++                      T(YAFFS_TRACE_ALWAYS,
++                              (TSTR("NULL object cache\n")));
++                      YBUG();
++              }
++
++              YFREE(allocator);
++
++      } else {
++              T(YAFFS_TRACE_ALWAYS,
++                      (TSTR("Deinitialising NULL allocator\n")));
++              YBUG();
++      }
++      dev->allocator = NULL;
++}
++
++
++static void fake_ctor0(void *data){data = data;}
++static void fake_ctor1(void *data){data = data;}
++static void fake_ctor2(void *data){data = data;}
++static void fake_ctor3(void *data){data = data;}
++static void fake_ctor4(void *data){data = data;}
++static void fake_ctor5(void *data){data = data;}
++static void fake_ctor6(void *data){data = data;}
++static void fake_ctor7(void *data){data = data;}
++static void fake_ctor8(void *data){data = data;}
++static void fake_ctor9(void *data){data = data;}
++
++static void (*fake_ctor_list[10]) (void *) = {
++      fake_ctor0,
++      fake_ctor1,
++      fake_ctor2,
++      fake_ctor3,
++      fake_ctor4,
++      fake_ctor5,
++      fake_ctor6,
++      fake_ctor7,
++      fake_ctor8,
++      fake_ctor9,
++};
++
++void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev)
++{
++      yaffs_Allocator *allocator;
++      unsigned mount_id = yaffs_dev_to_lc(dev)->mount_id;
++
++      T(YAFFS_TRACE_ALLOCATE,(TSTR("Initialising yaffs allocator\n")));
++
++      if(dev->allocator)
++              YBUG();
++      else if(mount_id >= 10){
++              T(YAFFS_TRACE_ALWAYS,(TSTR("Bad mount_id %u\n"),mount_id));
++      } else {
++               allocator = YMALLOC(sizeof(yaffs_Allocator));
++               memset(allocator,0,sizeof(yaffs_Allocator));
++               dev->allocator = allocator;
++
++              if(!dev->allocator){
++                      T(YAFFS_TRACE_ALWAYS,
++                              (TSTR("yaffs allocator creation failed\n")));
++                      YBUG();
++                      return;
++
++              }
++
++              sprintf(allocator->tnode_name,"yaffs_t_%u",mount_id);
++              sprintf(allocator->object_name,"yaffs_o_%u",mount_id);
++
++              allocator->tnode_cache =
++                      kmem_cache_create(allocator->tnode_name,
++                              dev->tnode_size,
++                              0, 0,
++                              fake_ctor_list[mount_id]);
++              if(allocator->tnode_cache)
++                      T(YAFFS_TRACE_ALLOCATE,
++                              (TSTR("tnode cache \"%s\" %p\n"),
++                              allocator->tnode_name,allocator->tnode_cache));
++              else {
++                      T(YAFFS_TRACE_ALWAYS,
++                              (TSTR("yaffs cache creation failed\n")));
++                      YBUG();
++              }
++
++
++              allocator->object_cache = 
++                      kmem_cache_create(allocator->object_name,
++                              sizeof(yaffs_obj_t),
++                              0, 0,
++                              fake_ctor_list[mount_id]);
++
++              if(allocator->object_cache)
++                      T(YAFFS_TRACE_ALLOCATE,
++                              (TSTR("object cache \"%s\" %p\n"),
++                              allocator->object_name,allocator->object_cache));
++
++              else {
++                      T(YAFFS_TRACE_ALWAYS,
++                              (TSTR("yaffs cache creation failed\n")));
++                      YBUG();
++              }
++      } 
++}
++
++
++yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev)
++{
++      yaffs_Allocator *allocator = dev->allocator;
++      if(!allocator || !allocator->tnode_cache){
++              YBUG();
++              return NULL;
++      }
++      return kmem_cache_alloc(allocator->tnode_cache, GFP_NOFS);
++}
++
++void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
++{
++      yaffs_Allocator *allocator = dev->allocator;
++      kmem_cache_free(allocator->tnode_cache,tn);
++}
++
++yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev)
++{
++      yaffs_Allocator *allocator = dev->allocator;
++      if(!allocator){
++              YBUG();
++              return NULL;
++      }
++      if(!allocator->object_cache){
++              YBUG();
++              return NULL;
++      }
++      return kmem_cache_alloc(allocator->object_cache, GFP_NOFS);
++}
++
++void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj)
++{
++      yaffs_Allocator *allocator = dev->allocator;
++      kmem_cache_free(allocator->object_cache,obj);
++}
+--- /dev/null
++++ b/fs/yaffs2/yaffs_linux.h
+@@ -0,0 +1,43 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_LINUX_H__
++#define __YAFFS_LINUX_H__
++
++#include "devextras.h"
++#include "yportenv.h"
++
++struct yaffs_LinuxContext {
++      struct ylist_head       contextList; /* List of these we have mounted */
++      struct yaffs_dev_s *dev;
++      struct super_block * superBlock;
++      struct task_struct *bgThread; /* Background thread for this device */
++      int bgRunning;
++        struct semaphore grossLock;     /* Gross locking semaphore */
++      __u8 *spareBuffer;      /* For mtdif2 use. Don't know the size of the buffer
++                               * at compile time so we have to allocate it.
++                               */
++      struct ylist_head searchContexts;
++      void (*putSuperFunc)(struct super_block *sb);
++
++      struct task_struct *readdirProcess;
++      unsigned mount_id;
++};
++
++#define yaffs_dev_to_lc(dev) ((struct yaffs_LinuxContext *)((dev)->os_context))
++#define yaffs_dev_to_mtd(dev) ((struct mtd_info *)((dev)->driver_context))
++
++#endif
++
+--- /dev/null
++++ b/fs/yaffs2/yaffs_list.h
+@@ -0,0 +1,127 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++/*
++ * This file is just holds extra declarations of macros that would normally
++ * be providesd in the Linux kernel. These macros have been written from
++ * scratch but are functionally equivalent to the Linux ones.
++ *
++ */
++
++#ifndef __YAFFS_LIST_H__
++#define __YAFFS_LIST_H__
++
++
++#include "yportenv.h"
++
++/*
++ * This is a simple doubly linked list implementation that matches the
++ * way the Linux kernel doubly linked list implementation works.
++ */
++
++struct ylist_head {
++      struct ylist_head *next; /* next in chain */
++      struct ylist_head *prev; /* previous in chain */
++};
++
++
++/* Initialise a static list */
++#define YLIST_HEAD(name) \
++struct ylist_head name = { &(name), &(name)}
++
++
++
++/* Initialise a list head to an empty list */
++#define YINIT_LIST_HEAD(p) \
++do { \
++      (p)->next = (p);\
++      (p)->prev = (p); \
++} while (0)
++
++
++/* Add an element to a list */
++static Y_INLINE void ylist_add(struct ylist_head *newEntry,
++                              struct ylist_head *list)
++{
++      struct ylist_head *listNext = list->next;
++
++      list->next = newEntry;
++      newEntry->prev = list;
++      newEntry->next = listNext;
++      listNext->prev = newEntry;
++
++}
++
++static Y_INLINE void ylist_add_tail(struct ylist_head *newEntry,
++                               struct ylist_head *list)
++{
++      struct ylist_head *listPrev = list->prev;
++
++      list->prev = newEntry;
++      newEntry->next = list;
++      newEntry->prev = listPrev;
++      listPrev->next = newEntry;
++
++}
++
++
++/* Take an element out of its current list, with or without
++ * reinitialising the links.of the entry*/
++static Y_INLINE void ylist_del(struct ylist_head *entry)
++{
++      struct ylist_head *listNext = entry->next;
++      struct ylist_head *listPrev = entry->prev;
++
++      listNext->prev = listPrev;
++      listPrev->next = listNext;
++
++}
++
++static Y_INLINE void ylist_del_init(struct ylist_head *entry)
++{
++      ylist_del(entry);
++      entry->next = entry->prev = entry;
++}
++
++
++/* Test if the list is empty */
++static Y_INLINE int ylist_empty(struct ylist_head *entry)
++{
++      return (entry->next == entry);
++}
++
++
++/* ylist_entry takes a pointer to a list entry and offsets it to that
++ * we can find a pointer to the object it is embedded in.
++ */
++
++
++#define ylist_entry(entry, type, member) \
++      ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member)))
++
++
++/* ylist_for_each and list_for_each_safe  iterate over lists.
++ * ylist_for_each_safe uses temporary storage to make the list delete safe
++ */
++
++#define ylist_for_each(itervar, list) \
++      for (itervar = (list)->next; itervar != (list); itervar = itervar->next)
++
++#define ylist_for_each_safe(itervar, saveVar, list) \
++      for (itervar = (list)->next, saveVar = (list)->next->next; \
++              itervar != (list); itervar = saveVar, saveVar = saveVar->next)
++
++
++#endif
+--- a/fs/yaffs2/yaffs_mtdif1.c
++++ b/fs/yaffs2/yaffs_mtdif1.c
+@@ -2,7 +2,7 @@
+  * YAFFS: Yet another FFS. A NAND-flash specific file system.
+  * yaffs_mtdif1.c  NAND mtd interface functions for small-page NAND.
+  *
+- * Copyright (C) 2002 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * This program is free software; you can redistribute it and/or modify
+@@ -18,15 +18,17 @@
+  *
+  * These functions are invoked via function pointers in yaffs_nand.c.
+  * This replaces functionality provided by functions in yaffs_mtdif.c
+- * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are
++ * and the yaffs_tags_tCompatability functions in yaffs_tagscompat.c that are
+  * called in yaffs_mtdif.c when the function pointers are NULL.
+- * We assume the MTD layer is performing ECC (useNANDECC is true).
++ * We assume the MTD layer is performing ECC (use_nand_ecc is true).
+  */
+ 
+ #include "yportenv.h"
++#include "yaffs_trace.h"
+ #include "yaffs_guts.h"
+ #include "yaffs_packedtags1.h"
+-#include "yaffs_tagscompat.h" /* for yaffs_CalcTagsECC */
++#include "yaffs_tagscompat.h" /* for yaffs_calc_tags_ecc */
++#include "yaffs_linux.h"
+ 
+ #include "linux/kernel.h"
+ #include "linux/version.h"
+@@ -36,8 +38,6 @@
+ /* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
+ #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+ 
+-const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.10 2009-03-09 07:41:10 charles Exp $";
+-
+ #ifndef CONFIG_YAFFS_9BYTE_TAGS
+ # define YTAG1_SIZE 8
+ #else
+@@ -51,12 +51,12 @@ const char *yaffs_mtdif1_c_version = "$I
+  * adjust 'oobfree' to match your existing Yaffs data.
+  *
+  * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the
+- * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to
++ * page_status byte (at NAND spare offset 4) scattered/gathered from/to
+  * the 9th byte.
+  *
+  * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5
+- * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P
+- * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus
++ * We have/need PackedTags1 plus page_status: T0,T1,T2,T3,T4,T5,T6,T7,P
++ * where Tn are the tag bytes, En are MTD's ECC bytes, P is the page_status
+  * byte and B is the small-page bad-block indicator byte.
+  */
+ static struct nand_ecclayout nand_oob_16 = {
+@@ -88,42 +88,40 @@ static struct nand_ecclayout nand_oob_16
+  * Any underlying MTD error results in YAFFS_FAIL.
+  * Returns YAFFS_OK or YAFFS_FAIL.
+  */
+-int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev,
+-      int chunkInNAND, const __u8 *data, const yaffs_ExtendedTags *etags)
++int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev,
++      int nand_chunk, const __u8 *data, const yaffs_ext_tags *etags)
+ {
+-      struct mtd_info *mtd = dev->genericDevice;
+-      int chunkBytes = dev->nDataBytesPerChunk;
+-      loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
++      struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
++      int chunkBytes = dev->data_bytes_per_chunk;
++      loff_t addr = ((loff_t)nand_chunk) * chunkBytes;
+       struct mtd_oob_ops ops;
+       yaffs_PackedTags1 pt1;
+       int retval;
+ 
+-      /* we assume that PackedTags1 and yaffs_Tags are compatible */
++      /* we assume that PackedTags1 and yaffs_tags_t are compatible */
+       compile_time_assertion(sizeof(yaffs_PackedTags1) == 12);
+-      compile_time_assertion(sizeof(yaffs_Tags) == 8);
+-
+-      dev->nPageWrites++;
++      compile_time_assertion(sizeof(yaffs_tags_t) == 8);
+ 
+       yaffs_PackTags1(&pt1, etags);
+-      yaffs_CalcTagsECC((yaffs_Tags *)&pt1);
++      yaffs_calc_tags_ecc((yaffs_tags_t *)&pt1);
+ 
+       /* When deleting a chunk, the upper layer provides only skeletal
+-       * etags, one with chunkDeleted set.  However, we need to update the
++       * etags, one with is_deleted set.  However, we need to update the
+        * tags, not erase them completely.  So we use the NAND write property
+        * that only zeroed-bits stick and set tag bytes to all-ones and
+        * zero just the (not) deleted bit.
+        */
+ #ifndef CONFIG_YAFFS_9BYTE_TAGS
+-      if (etags->chunkDeleted) {
++      if (etags->is_deleted) {
+               memset(&pt1, 0xff, 8);
+               /* clear delete status bit to indicate deleted */
+               pt1.deleted = 0;
+       }
+ #else
+       ((__u8 *)&pt1)[8] = 0xff;
+-      if (etags->chunkDeleted) {
++      if (etags->is_deleted) {
+               memset(&pt1, 0xff, 8);
+-              /* zero pageStatus byte to indicate deleted */
++              /* zero page_status byte to indicate deleted */
+               ((__u8 *)&pt1)[8] = 0;
+       }
+ #endif
+@@ -137,20 +135,20 @@ int nandmtd1_WriteChunkWithTagsToNAND(ya
+ 
+       retval = mtd->write_oob(mtd, addr, &ops);
+       if (retval) {
+-              yaffs_trace(YAFFS_TRACE_MTD,
+-                      "write_oob failed, chunk %d, mtd error %d\n",
+-                      chunkInNAND, retval);
++              T(YAFFS_TRACE_MTD,
++                      (TSTR("write_oob failed, chunk %d, mtd error %d"TENDSTR),
++                      nand_chunk, retval));
+       }
+       return retval ? YAFFS_FAIL : YAFFS_OK;
+ }
+ 
+-/* Return with empty ExtendedTags but add eccResult.
++/* Return with empty ExtendedTags but add ecc_result.
+  */
+-static int rettags(yaffs_ExtendedTags *etags, int eccResult, int retval)
++static int rettags(yaffs_ext_tags *etags, int ecc_result, int retval)
+ {
+       if (etags) {
+               memset(etags, 0, sizeof(*etags));
+-              etags->eccResult = eccResult;
++              etags->ecc_result = ecc_result;
+       }
+       return retval;
+ }
+@@ -158,30 +156,28 @@ static int rettags(yaffs_ExtendedTags *e
+ /* Read a chunk (page) from NAND.
+  *
+  * Caller expects ExtendedTags data to be usable even on error; that is,
+- * all members except eccResult and blockBad are zeroed.
++ * all members except ecc_result and block_bad are zeroed.
+  *
+  *  - Check ECC results for data (if applicable)
+  *  - Check for blank/erased block (return empty ExtendedTags if blank)
+  *  - Check the PackedTags1 mini-ECC (correct if necessary/possible)
+  *  - Convert PackedTags1 to ExtendedTags
+- *  - Update eccResult and blockBad members to refect state.
++ *  - Update ecc_result and block_bad members to refect state.
+  *
+  * Returns YAFFS_OK or YAFFS_FAIL.
+  */
+-int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
+-      int chunkInNAND, __u8 *data, yaffs_ExtendedTags *etags)
++int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev,
++      int nand_chunk, __u8 *data, yaffs_ext_tags *etags)
+ {
+-      struct mtd_info *mtd = dev->genericDevice;
+-      int chunkBytes = dev->nDataBytesPerChunk;
+-      loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
++      struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
++      int chunkBytes = dev->data_bytes_per_chunk;
++      loff_t addr = ((loff_t)nand_chunk) * chunkBytes;
+       int eccres = YAFFS_ECC_RESULT_NO_ERROR;
+       struct mtd_oob_ops ops;
+       yaffs_PackedTags1 pt1;
+       int retval;
+       int deleted;
+ 
+-      dev->nPageReads++;
+-
+       memset(&ops, 0, sizeof(ops));
+       ops.mode = MTD_OOB_AUTO;
+       ops.len = (data) ? chunkBytes : 0;
+@@ -200,9 +196,9 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
+        */
+       retval = mtd->read_oob(mtd, addr, &ops);
+       if (retval) {
+-              yaffs_trace(YAFFS_TRACE_MTD,
+-                      "read_oob failed, chunk %d, mtd error %d\n",
+-                      chunkInNAND, retval);
++              T(YAFFS_TRACE_MTD,
++                      (TSTR("read_oob failed, chunk %d, mtd error %d"TENDSTR),
++                      nand_chunk, retval));
+       }
+ 
+       switch (retval) {
+@@ -213,23 +209,23 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
+       case -EUCLEAN:
+               /* MTD's ECC fixed the data */
+               eccres = YAFFS_ECC_RESULT_FIXED;
+-              dev->eccFixed++;
++              dev->n_ecc_fixed++;
+               break;
+ 
+       case -EBADMSG:
+               /* MTD's ECC could not fix the data */
+-              dev->eccUnfixed++;
++              dev->n_ecc_unfixed++;
+               /* fall into... */
+       default:
+               rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0);
+-              etags->blockBad = (mtd->block_isbad)(mtd, addr);
++              etags->block_bad = (mtd->block_isbad)(mtd, addr);
+               return YAFFS_FAIL;
+       }
+ 
+       /* Check for a blank/erased chunk.
+        */
+-      if (yaffs_CheckFF((__u8 *)&pt1, 8)) {
+-              /* when blank, upper layers want eccResult to be <= NO_ERROR */
++      if (yaffs_check_ff((__u8 *)&pt1, 8)) {
++              /* when blank, upper layers want ecc_result to be <= NO_ERROR */
+               return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK);
+       }
+ 
+@@ -241,37 +237,37 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
+       deleted = !pt1.deleted;
+       pt1.deleted = 1;
+ #else
+-      deleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7);
++      deleted = (yaffs_count_bits(((__u8 *)&pt1)[8]) < 7);
+ #endif
+ 
+       /* Check the packed tags mini-ECC and correct if necessary/possible.
+        */
+-      retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1);
++      retval = yaffs_check_tags_ecc((yaffs_tags_t *)&pt1);
+       switch (retval) {
+       case 0:
+               /* no tags error, use MTD result */
+               break;
+       case 1:
+               /* recovered tags-ECC error */
+-              dev->tagsEccFixed++;
++              dev->n_tags_ecc_fixed++;
+               if (eccres == YAFFS_ECC_RESULT_NO_ERROR)
+                       eccres = YAFFS_ECC_RESULT_FIXED;
+               break;
+       default:
+               /* unrecovered tags-ECC error */
+-              dev->tagsEccUnfixed++;
++              dev->n_tags_ecc_unfixed++;
+               return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL);
+       }
+ 
+       /* Unpack the tags to extended form and set ECC result.
+-       * [set shouldBeFF just to keep yaffs_UnpackTags1 happy]
++       * [set shouldBeFF just to keep yaffs_unpack_tags1 happy]
+        */
+       pt1.shouldBeFF = 0xFFFFFFFF;
+-      yaffs_UnpackTags1(etags, &pt1);
+-      etags->eccResult = eccres;
++      yaffs_unpack_tags1(etags, &pt1);
++      etags->ecc_result = eccres;
+ 
+       /* Set deleted state */
+-      etags->chunkDeleted = deleted;
++      etags->is_deleted = deleted;
+       return YAFFS_OK;
+ }
+ 
+@@ -282,15 +278,15 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
+  *
+  * Returns YAFFS_OK or YAFFS_FAIL.
+  */
+-int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
++int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no)
+ {
+-      struct mtd_info *mtd = dev->genericDevice;
+-      int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk;
++      struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
++      int blocksize = dev->param.chunks_per_block * dev->data_bytes_per_chunk;
+       int retval;
+ 
+-      yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad\n", blockNo);
++      T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("marking block %d bad"TENDSTR), block_no));
+ 
+-      retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
++      retval = mtd->block_markbad(mtd, (loff_t)blocksize * block_no);
+       return (retval) ? YAFFS_FAIL : YAFFS_OK;
+ }
+ 
+@@ -305,9 +301,9 @@ static int nandmtd1_TestPrerequists(stru
+       int oobavail = mtd->ecclayout->oobavail;
+ 
+       if (oobavail < YTAG1_SIZE) {
+-              yaffs_trace(YAFFS_TRACE_ERROR,
+-                      "mtd device has only %d bytes for tags, need %d\n",
+-                      oobavail, YTAG1_SIZE);
++              T(YAFFS_TRACE_ERROR,
++                      (TSTR("mtd device has only %d bytes for tags, need %d"TENDSTR),
++                      oobavail, YTAG1_SIZE));
+               return YAFFS_FAIL;
+       }
+       return YAFFS_OK;
+@@ -322,13 +318,13 @@ static int nandmtd1_TestPrerequists(stru
+  *
+  * Always returns YAFFS_OK.
+  */
+-int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+-      yaffs_BlockState *pState, __u32 *pSequenceNumber)
++int nandmtd1_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
++      yaffs_block_state_t *pState, __u32 *pSequenceNumber)
+ {
+-      struct mtd_info *mtd = dev->genericDevice;
+-      int chunkNo = blockNo * dev->nChunksPerBlock;
+-      loff_t addr = (loff_t)chunkNo * dev->nDataBytesPerChunk;
+-      yaffs_ExtendedTags etags;
++      struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
++      int chunkNo = block_no * dev->param.chunks_per_block;
++      loff_t addr = (loff_t)chunkNo * dev->data_bytes_per_chunk;
++      yaffs_ext_tags etags;
+       int state = YAFFS_BLOCK_STATE_DEAD;
+       int seqnum = 0;
+       int retval;
+@@ -340,17 +336,17 @@ int nandmtd1_QueryNANDBlock(struct yaffs
+               return YAFFS_FAIL;
+ 
+       retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
+-      etags.blockBad = (mtd->block_isbad)(mtd, addr);
+-      if (etags.blockBad) {
+-              yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
+-                      "block %d is marked bad\n", blockNo);
++      etags.block_bad = (mtd->block_isbad)(mtd, addr);
++      if (etags.block_bad) {
++              T(YAFFS_TRACE_BAD_BLOCKS,
++                      (TSTR("block %d is marked bad"TENDSTR), block_no));
+               state = YAFFS_BLOCK_STATE_DEAD;
+-      } else if (etags.eccResult != YAFFS_ECC_RESULT_NO_ERROR) {
++      } else if (etags.ecc_result != YAFFS_ECC_RESULT_NO_ERROR) {
+               /* bad tags, need to look more closely */
+               state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
+-      } else if (etags.chunkUsed) {
++      } else if (etags.chunk_used) {
+               state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
+-              seqnum = etags.sequenceNumber;
++              seqnum = etags.seq_number;
+       } else {
+               state = YAFFS_BLOCK_STATE_EMPTY;
+       }
+--- a/fs/yaffs2/yaffs_mtdif1-compat.c
++++ /dev/null
+@@ -1,434 +0,0 @@
+-From ian@brightstareng.com Fri May 18 15:06:49 2007
+-From ian@brightstareng.com Fri May 18 15:08:21 2007
+-Received: from 206.173.66.57.ptr.us.xo.net ([206.173.66.57] helo=zebra.brightstareng.com)
+-      by apollo.linkchoose.co.uk with esmtp (Exim 4.60)
+-      (envelope-from <ian@brightstareng.com>)
+-      id 1Hp380-00011e-T6
+-      for david.goodenough@linkchoose.co.uk; Fri, 18 May 2007 15:08:21 +0100
+-Received: from localhost (localhost.localdomain [127.0.0.1])
+-      by zebra.brightstareng.com (Postfix) with ESMTP
+-      id 4819F28C004; Fri, 18 May 2007 10:07:49 -0400 (EDT)
+-Received: from zebra.brightstareng.com ([127.0.0.1])
+- by localhost (zebra [127.0.0.1]) (amavisd-new, port 10024) with ESMTP
+- id 05328-06; Fri, 18 May 2007 10:07:16 -0400 (EDT)
+-Received: from pippin (unknown [192.168.1.25])
+-      by zebra.brightstareng.com (Postfix) with ESMTP
+-      id 8BEF528C1BC; Fri, 18 May 2007 10:06:53 -0400 (EDT)
+-From: Ian McDonnell <ian@brightstareng.com>
+-To: David Goodenough <david.goodenough@linkchoose.co.uk>
+-Subject: Re: something tested this time -- yaffs_mtdif1-compat.c
+-Date: Fri, 18 May 2007 10:06:49 -0400
+-User-Agent: KMail/1.9.1
+-References: <200705142207.06909.ian@brightstareng.com> <200705171131.53536.ian@brightstareng.com> <200705181334.32166.david.goodenough@linkchoose.co.uk>
+-In-Reply-To: <200705181334.32166.david.goodenough@linkchoose.co.uk>
+-Cc: Andrea Conti <alyf@alyf.net>,
+- Charles Manning <manningc2@actrix.gen.nz>
+-MIME-Version: 1.0
+-Content-Type: Multipart/Mixed;
+-  boundary="Boundary-00=_5LbTGmt62YoutxM"
+-Message-Id: <200705181006.49860.ian@brightstareng.com>
+-X-Virus-Scanned: by amavisd-new at brightstareng.com
+-Status: R
+-X-Status: NT
+-X-KMail-EncryptionState:
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+-X-KMail-MDN-Sent:
+-
+---Boundary-00=_5LbTGmt62YoutxM
+-Content-Type: text/plain;
+-  charset="iso-8859-15"
+-Content-Transfer-Encoding: 7bit
+-Content-Disposition: inline
+-
+-David, Andrea,
+-
+-On Friday 18 May 2007 08:34, you wrote:
+-> Yea team.  With this fix in place (I put it in the wrong place
+-> at first) I can now mount and ls the Yaffs partition without
+-> an error messages!
+-
+-Good news!
+-
+-Attached is a newer yaffs_mtdif1.c with a bandaid to help the
+-2.6.18 and 2.6.19 versions of MTD not trip on the oob read.
+-See the LINUX_VERSION_CODE conditional in
+-nandmtd1_ReadChunkWithTagsFromNAND.
+-
+--imcd
+-
+---Boundary-00=_5LbTGmt62YoutxM
+-Content-Type: text/x-csrc;
+-  charset="iso-8859-15";
+-  name="yaffs_mtdif1.c"
+-Content-Transfer-Encoding: 7bit
+-Content-Disposition: attachment;
+-      filename="yaffs_mtdif1.c"
+-
+-/*
+- * YAFFS: Yet another FFS. A NAND-flash specific file system.
+- * yaffs_mtdif1.c  NAND mtd interface functions for small-page NAND.
+- *
+- * Copyright (C) 2002 Aleph One Ltd.
+- *   for Toby Churchill Ltd and Brightstar Engineering
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License version 2 as
+- * published by the Free Software Foundation.
+- */
+-
+-/*
+- * This module provides the interface between yaffs_nand.c and the
+- * MTD API.  This version is used when the MTD interface supports the
+- * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17,
+- * and we have small-page NAND device.
+- *
+- * These functions are invoked via function pointers in yaffs_nand.c.
+- * This replaces functionality provided by functions in yaffs_mtdif.c
+- * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are
+- * called in yaffs_mtdif.c when the function pointers are NULL.
+- * We assume the MTD layer is performing ECC (useNANDECC is true).
+- */
+-
+-#include "yportenv.h"
+-#include "yaffs_guts.h"
+-#include "yaffs_packedtags1.h"
+-#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC
+-
+-#include "linux/kernel.h"
+-#include "linux/version.h"
+-#include "linux/types.h"
+-#include "linux/mtd/mtd.h"
+-
+-/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+-
+-const char *yaffs_mtdif1_c_version = "$Id$";
+-
+-#ifndef CONFIG_YAFFS_9BYTE_TAGS
+-# define YTAG1_SIZE 8
+-#else
+-# define YTAG1_SIZE 9
+-#endif
+-
+-#if 0
+-/* Use the following nand_ecclayout with MTD when using
+- * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout.
+- * If you have existing Yaffs images and the byte order differs from this,
+- * adjust 'oobfree' to match your existing Yaffs data.
+- *
+- * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the
+- * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to
+- * the 9th byte.
+- *
+- * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5
+- * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P
+- * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus
+- * byte and B is the small-page bad-block indicator byte.
+- */
+-static struct nand_ecclayout nand_oob_16 = {
+-      .eccbytes = 6,
+-      .eccpos = { 8, 9, 10, 13, 14, 15 },
+-      .oobavail = 9,
+-      .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
+-};
+-#endif
+-
+-/* Write a chunk (page) of data to NAND.
+- *
+- * Caller always provides ExtendedTags data which are converted to a more
+- * compact (packed) form for storage in NAND.  A mini-ECC runs over the
+- * contents of the tags meta-data; used to valid the tags when read.
+- *
+- *  - Pack ExtendedTags to PackedTags1 form
+- *  - Compute mini-ECC for PackedTags1
+- *  - Write data and packed tags to NAND.
+- *
+- * Note: Due to the use of the PackedTags1 meta-data which does not include
+- * a full sequence number (as found in the larger PackedTags2 form) it is
+- * necessary for Yaffs to re-write a chunk/page (just once) to mark it as
+- * discarded and dirty.  This is not ideal: newer NAND parts are supposed
+- * to be written just once.  When Yaffs performs this operation, this
+- * function is called with a NULL data pointer -- calling MTD write_oob
+- * without data is valid usage (2.6.17).
+- *
+- * Any underlying MTD error results in YAFFS_FAIL.
+- * Returns YAFFS_OK or YAFFS_FAIL.
+- */
+-int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev,
+-      int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags)
+-{
+-      struct mtd_info * mtd = dev->genericDevice;
+-      int chunkBytes = dev->nDataBytesPerChunk;
+-      loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
+-      struct mtd_oob_ops ops;
+-      yaffs_PackedTags1 pt1;
+-      int retval;
+-
+-      /* we assume that PackedTags1 and yaffs_Tags are compatible */
+-      compile_time_assertion(sizeof(yaffs_PackedTags1) == 12);
+-      compile_time_assertion(sizeof(yaffs_Tags) == 8);
+-
+-      yaffs_PackTags1(&pt1, etags);
+-      yaffs_CalcTagsECC((yaffs_Tags *)&pt1);
+-
+-      /* When deleting a chunk, the upper layer provides only skeletal
+-       * etags, one with chunkDeleted set.  However, we need to update the
+-       * tags, not erase them completely.  So we use the NAND write property
+-       * that only zeroed-bits stick and set tag bytes to all-ones and
+-       * zero just the (not) deleted bit.
+-       */
+-#ifndef CONFIG_YAFFS_9BYTE_TAGS
+-      if (etags->chunkDeleted) {
+-              memset(&pt1, 0xff, 8);
+-              /* clear delete status bit to indicate deleted */
+-              pt1.deleted = 0;
+-      }
+-#else
+-      ((__u8 *)&pt1)[8] = 0xff;
+-      if (etags->chunkDeleted) {
+-              memset(&pt1, 0xff, 8);
+-              /* zero pageStatus byte to indicate deleted */
+-              ((__u8 *)&pt1)[8] = 0;
+-      }
+-#endif
+-
+-      memset(&ops, 0, sizeof(ops));
+-      ops.mode = MTD_OOB_AUTO;
+-      ops.len = (data) ? chunkBytes : 0;
+-      ops.ooblen = YTAG1_SIZE;
+-      ops.datbuf = (__u8 *)data;
+-      ops.oobbuf = (__u8 *)&pt1;
+-
+-      retval = mtd->write_oob(mtd, addr, &ops);
+-      if (retval) {
+-              yaffs_trace(YAFFS_TRACE_MTD,
+-                      "write_oob failed, chunk %d, mtd error %d\n",
+-                      chunkInNAND, retval);
+-      }
+-      return retval ? YAFFS_FAIL : YAFFS_OK;
+-}
+-
+-/* Return with empty ExtendedTags but add eccResult.
+- */
+-static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval)
+-{
+-      if (etags) {
+-              memset(etags, 0, sizeof(*etags));
+-              etags->eccResult = eccResult;
+-      }
+-      return retval;
+-}
+-
+-/* Read a chunk (page) from NAND.
+- *
+- * Caller expects ExtendedTags data to be usable even on error; that is,
+- * all members except eccResult and blockBad are zeroed.
+- *
+- *  - Check ECC results for data (if applicable)
+- *  - Check for blank/erased block (return empty ExtendedTags if blank)
+- *  - Check the PackedTags1 mini-ECC (correct if necessary/possible)
+- *  - Convert PackedTags1 to ExtendedTags
+- *  - Update eccResult and blockBad members to refect state.
+- *
+- * Returns YAFFS_OK or YAFFS_FAIL.
+- */
+-int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
+-      int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags)
+-{
+-      struct mtd_info * mtd = dev->genericDevice;
+-      int chunkBytes = dev->nDataBytesPerChunk;
+-      loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
+-      int eccres = YAFFS_ECC_RESULT_NO_ERROR;
+-      struct mtd_oob_ops ops;
+-      yaffs_PackedTags1 pt1;
+-      int retval;
+-      int deleted;
+-
+-      memset(&ops, 0, sizeof(ops));
+-      ops.mode = MTD_OOB_AUTO;
+-      ops.len = (data) ? chunkBytes : 0;
+-      ops.ooblen = YTAG1_SIZE;
+-      ops.datbuf = data;
+-      ops.oobbuf = (__u8 *)&pt1;
+-
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20))
+-      /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
+-       * help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
+-       */
+-      ops.len = (ops.datbuf) ? ops.len : ops.ooblen;
+-#endif
+-      /* Read page and oob using MTD.
+-       * Check status and determine ECC result.
+-       */
+-      retval = mtd->read_oob(mtd, addr, &ops);
+-      if (retval) {
+-              yaffs_trace(YAFFS_TRACE_MTD,
+-                      "read_oob failed, chunk %d, mtd error %d\n",
+-                      chunkInNAND, retval);
+-      }
+-
+-      switch (retval) {
+-      case 0:
+-              /* no error */
+-              break;
+-
+-      case -EUCLEAN:
+-              /* MTD's ECC fixed the data */
+-              eccres = YAFFS_ECC_RESULT_FIXED;
+-              dev->eccFixed++;
+-              break;
+-
+-      case -EBADMSG:
+-              /* MTD's ECC could not fix the data */
+-              dev->eccUnfixed++;
+-              /* fall into... */
+-      default:
+-              rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0);
+-              etags->blockBad = (mtd->block_isbad)(mtd, addr);
+-              return YAFFS_FAIL;
+-      }
+-
+-      /* Check for a blank/erased chunk.
+-       */
+-      if (yaffs_CheckFF((__u8 *)&pt1, 8)) {
+-              /* when blank, upper layers want eccResult to be <= NO_ERROR */
+-              return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK);
+-      }
+-
+-#ifndef CONFIG_YAFFS_9BYTE_TAGS
+-      /* Read deleted status (bit) then return it to it's non-deleted
+-       * state before performing tags mini-ECC check. pt1.deleted is
+-       * inverted.
+-       */
+-      deleted = !pt1.deleted;
+-      pt1.deleted = 1;
+-#else
+-      (void) deleted; /* not used */
+-#endif
+-
+-      /* Check the packed tags mini-ECC and correct if necessary/possible.
+-       */
+-      retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1);
+-      switch (retval) {
+-      case 0:
+-              /* no tags error, use MTD result */
+-              break;
+-      case 1:
+-              /* recovered tags-ECC error */
+-              dev->tagsEccFixed++;
+-              eccres = YAFFS_ECC_RESULT_FIXED;
+-              break;
+-      default:
+-              /* unrecovered tags-ECC error */
+-              dev->tagsEccUnfixed++;
+-              return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL);
+-      }
+-
+-      /* Unpack the tags to extended form and set ECC result.
+-       * [set shouldBeFF just to keep yaffs_UnpackTags1 happy]
+-       */
+-      pt1.shouldBeFF = 0xFFFFFFFF;
+-      yaffs_UnpackTags1(etags, &pt1);
+-      etags->eccResult = eccres;
+-
+-      /* Set deleted state.
+-       */
+-#ifndef CONFIG_YAFFS_9BYTE_TAGS
+-      etags->chunkDeleted = deleted;
+-#else
+-      etags->chunkDeleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7);
+-#endif
+-      return YAFFS_OK;
+-}
+-
+-/* Mark a block bad.
+- *
+- * This is a persistant state.
+- * Use of this function should be rare.
+- *
+- * Returns YAFFS_OK or YAFFS_FAIL.
+- */
+-int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
+-{
+-      struct mtd_info * mtd = dev->genericDevice;
+-      int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk;
+-      int retval;
+-
+-      yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo);
+-
+-      retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
+-      return (retval) ? YAFFS_FAIL : YAFFS_OK;
+-}
+-
+-/* Check any MTD prerequists.
+- *
+- * Returns YAFFS_OK or YAFFS_FAIL.
+- */
+-static int nandmtd1_TestPrerequists(struct mtd_info * mtd)
+-{
+-      /* 2.6.18 has mtd->ecclayout->oobavail */
+-      /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */
+-      int oobavail = mtd->ecclayout->oobavail;
+-
+-      if (oobavail < YTAG1_SIZE) {
+-              yaffs_trace(YAFFS_TRACE_ERROR,
+-                      "mtd device has only %d bytes for tags, need %d",
+-                      oobavail, YTAG1_SIZE);
+-              return YAFFS_FAIL;
+-      }
+-      return YAFFS_OK;
+-}
+-
+-/* Query for the current state of a specific block.
+- *
+- * Examine the tags of the first chunk of the block and return the state:
+- *  - YAFFS_BLOCK_STATE_DEAD, the block is marked bad
+- *  - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use
+- *  - YAFFS_BLOCK_STATE_EMPTY, the block is clean
+- *
+- * Always returns YAFFS_OK.
+- */
+-int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+-      yaffs_BlockState * pState, int *pSequenceNumber)
+-{
+-      struct mtd_info * mtd = dev->genericDevice;
+-      int chunkNo = blockNo * dev->nChunksPerBlock;
+-      yaffs_ExtendedTags etags;
+-      int state = YAFFS_BLOCK_STATE_DEAD;
+-      int seqnum = 0;
+-      int retval;
+-
+-      /* We don't yet have a good place to test for MTD config prerequists.
+-       * Do it here as we are called during the initial scan.
+-       */
+-      if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) {
+-              return YAFFS_FAIL;
+-      }
+-
+-      retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
+-      if (etags.blockBad) {
+-              yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
+-                      "block %d is marked bad", blockNo);
+-              state = YAFFS_BLOCK_STATE_DEAD;
+-      }
+-      else if (etags.chunkUsed) {
+-              state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
+-              seqnum = etags.sequenceNumber;
+-      }
+-      else {
+-              state = YAFFS_BLOCK_STATE_EMPTY;
+-      }
+-
+-      *pState = state;
+-      *pSequenceNumber = seqnum;
+-
+-      /* query always succeeds */
+-      return YAFFS_OK;
+-}
+-
+-#endif /*KERNEL_VERSION*/
+-
+---Boundary-00=_5LbTGmt62YoutxM--
+-
+-
+-
+--- a/fs/yaffs2/yaffs_mtdif1.h
++++ b/fs/yaffs2/yaffs_mtdif1.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System. A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * This program is free software; you can redistribute it and/or modify
+@@ -14,15 +14,15 @@
+ #ifndef __YAFFS_MTDIF1_H__
+ #define __YAFFS_MTDIF1_H__
+ 
+-int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
+-      const __u8 *data, const yaffs_ExtendedTags *tags);
++int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk,
++      const __u8 *data, const yaffs_ext_tags *tags);
+ 
+-int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
+-      __u8 *data, yaffs_ExtendedTags *tags);
++int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk,
++      __u8 *data, yaffs_ext_tags *tags);
+ 
+-int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
++int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no);
+ 
+-int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+-      yaffs_BlockState *state, __u32 *sequenceNumber);
++int nandmtd1_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
++      yaffs_block_state_t *state, __u32 *seq_number);
+ 
+ #endif
+--- a/fs/yaffs2/yaffs_mtdif2.c
++++ b/fs/yaffs2/yaffs_mtdif2.c
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -13,11 +13,8 @@
+ 
+ /* mtd interface for YAFFS2 */
+ 
+-const char *yaffs_mtdif2_c_version =
+-      "$Id: yaffs_mtdif2.c,v 1.23 2009-03-06 17:20:53 wookey Exp $";
+-
+ #include "yportenv.h"
+-
++#include "yaffs_trace.h"
+ 
+ #include "yaffs_mtdif2.h"
+ 
+@@ -27,15 +24,17 @@ const char *yaffs_mtdif2_c_version =
+ 
+ #include "yaffs_packedtags2.h"
+ 
++#include "yaffs_linux.h"
++
+ /* NB For use with inband tags....
+  * We assume that the data buffer is of size totalBytersPerChunk so that we can also
+  * use it to load the tags.
+  */
+-int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
++int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk,
+                                     const __u8 *data,
+-                                    const yaffs_ExtendedTags *tags)
++                                    const yaffs_ext_tags *tags)
+ {
+-      struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
++      struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+ #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+       struct mtd_oob_ops ops;
+ #else
+@@ -47,13 +46,16 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya
+ 
+       yaffs_PackedTags2 pt;
+ 
++      int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt);
++      void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t : (void *)&pt;
++
+       T(YAFFS_TRACE_MTD,
+         (TSTR
+          ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p"
+-          TENDSTR), chunkInNAND, data, tags));
++          TENDSTR), nand_chunk, data, tags));
+ 
+ 
+-      addr  = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk;
++      addr  = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk;
+ 
+       /* For yaffs2 writing there must be both data and tags.
+        * If we're using inband tags, then the tags are stuffed into
+@@ -61,30 +63,30 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya
+        */
+       if (!data || !tags)
+               BUG();
+-      else if (dev->inbandTags) {
++      else if (dev->param.inband_tags) {
+               yaffs_PackedTags2TagsPart *pt2tp;
+-              pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->nDataBytesPerChunk);
++              pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->data_bytes_per_chunk);
+               yaffs_PackTags2TagsPart(pt2tp, tags);
+       } else
+-              yaffs_PackTags2(&pt, tags);
++              yaffs_PackTags2(&pt, tags, !dev->param.no_tags_ecc);
+ 
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+       ops.mode = MTD_OOB_AUTO;
+-      ops.ooblen = (dev->inbandTags) ? 0 : sizeof(pt);
+-      ops.len = dev->totalBytesPerChunk;
++      ops.ooblen = (dev->param.inband_tags) ? 0 : packed_tags_size;
++      ops.len = dev->param.total_bytes_per_chunk;
+       ops.ooboffs = 0;
+       ops.datbuf = (__u8 *)data;
+-      ops.oobbuf = (dev->inbandTags) ? NULL : (void *)&pt;
++      ops.oobbuf = (dev->param.inband_tags) ? NULL : packed_tags_ptr;
+       retval = mtd->write_oob(mtd, addr, &ops);
+ 
+ #else
+-      if (!dev->inbandTags) {
++      if (!dev->param.inband_tags) {
+               retval =
+-                  mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
+-                                 &dummy, data, (__u8 *) &pt, NULL);
++                  mtd->write_ecc(mtd, addr, dev->data_bytes_per_chunk,
++                                 &dummy, data, (__u8 *) packed_tags_ptr, NULL);
+       } else {
+               retval =
+-                  mtd->write(mtd, addr, dev->totalBytesPerChunk, &dummy,
++                  mtd->write(mtd, addr, dev->param.total_bytes_per_chunk, &dummy,
+                              data);
+       }
+ #endif
+@@ -95,10 +97,10 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya
+               return YAFFS_FAIL;
+ }
+ 
+-int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
+-                                     __u8 *data, yaffs_ExtendedTags *tags)
++int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk,
++                                     __u8 *data, yaffs_ext_tags *tags)
+ {
+-      struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
++      struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+ #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+       struct mtd_oob_ops ops;
+ #endif
+@@ -106,20 +108,23 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+       int retval = 0;
+       int localData = 0;
+ 
+-      loff_t addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk;
++      loff_t addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk;
+ 
+       yaffs_PackedTags2 pt;
+ 
++      int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt);
++      void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t: (void *)&pt;
++
+       T(YAFFS_TRACE_MTD,
+         (TSTR
+          ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p"
+-          TENDSTR), chunkInNAND, data, tags));
++          TENDSTR), nand_chunk, data, tags));
+ 
+-      if (dev->inbandTags) {
++      if (dev->param.inband_tags) {
+ 
+               if (!data) {
+                       localData = 1;
+-                      data = yaffs_GetTempBuffer(dev, __LINE__);
++                      data = yaffs_get_temp_buffer(dev, __LINE__);
+               }
+ 
+ 
+@@ -127,30 +132,30 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+ 
+ 
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-      if (dev->inbandTags || (data && !tags))
+-              retval = mtd->read(mtd, addr, dev->totalBytesPerChunk,
++      if (dev->param.inband_tags || (data && !tags))
++              retval = mtd->read(mtd, addr, dev->param.total_bytes_per_chunk,
+                               &dummy, data);
+       else if (tags) {
+               ops.mode = MTD_OOB_AUTO;
+-              ops.ooblen = sizeof(pt);
+-              ops.len = data ? dev->nDataBytesPerChunk : sizeof(pt);
++              ops.ooblen = packed_tags_size;
++              ops.len = data ? dev->data_bytes_per_chunk : packed_tags_size;
+               ops.ooboffs = 0;
+               ops.datbuf = data;
+-              ops.oobbuf = dev->spareBuffer;
++              ops.oobbuf = yaffs_dev_to_lc(dev)->spareBuffer;
+               retval = mtd->read_oob(mtd, addr, &ops);
+       }
+ #else
+-      if (!dev->inbandTags && data && tags) {
++      if (!dev->param.inband_tags && data && tags) {
+ 
+-              retval = mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
++              retval = mtd->read_ecc(mtd, addr, dev->data_bytes_per_chunk,
+                                         &dummy, data, dev->spareBuffer,
+                                         NULL);
+       } else {
+               if (data)
+                       retval =
+-                          mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy,
++                          mtd->read(mtd, addr, dev->data_bytes_per_chunk, &dummy,
+                                     data);
+-              if (!dev->inbandTags && tags)
++              if (!dev->param.inband_tags && tags)
+                       retval =
+                           mtd->read_oob(mtd, addr, mtd->oobsize, &dummy,
+                                         dev->spareBuffer);
+@@ -158,41 +163,47 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+ #endif
+ 
+ 
+-      if (dev->inbandTags) {
++      if (dev->param.inband_tags) {
+               if (tags) {
+                       yaffs_PackedTags2TagsPart *pt2tp;
+-                      pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->nDataBytesPerChunk];
+-                      yaffs_UnpackTags2TagsPart(tags, pt2tp);
++                      pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->data_bytes_per_chunk];
++                      yaffs_unpack_tags2tags_part(tags, pt2tp);
+               }
+       } else {
+               if (tags) {
+-                      memcpy(&pt, dev->spareBuffer, sizeof(pt));
+-                      yaffs_UnpackTags2(tags, &pt);
++                      memcpy(packed_tags_ptr, yaffs_dev_to_lc(dev)->spareBuffer, packed_tags_size);
++                      yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc);
+               }
+       }
+ 
+       if (localData)
+-              yaffs_ReleaseTempBuffer(dev, data, __LINE__);
++              yaffs_release_temp_buffer(dev, data, __LINE__);
+ 
+-      if (tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR)
+-              tags->eccResult = YAFFS_ECC_RESULT_UNFIXED;
++      if (tags && retval == -EBADMSG && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) {
++              tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED;
++              dev->n_ecc_unfixed++;
++      }
++      if(tags && retval == -EUCLEAN && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) {
++              tags->ecc_result = YAFFS_ECC_RESULT_FIXED;
++              dev->n_ecc_fixed++;
++      }
+       if (retval == 0)
+               return YAFFS_OK;
+       else
+               return YAFFS_FAIL;
+ }
+ 
+-int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
++int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no)
+ {
+-      struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
++      struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+       int retval;
+       T(YAFFS_TRACE_MTD,
+-        (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), blockNo));
++        (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), block_no));
+ 
+       retval =
+           mtd->block_markbad(mtd,
+-                             blockNo * dev->nChunksPerBlock *
+-                             dev->totalBytesPerChunk);
++                             block_no * dev->param.chunks_per_block *
++                             dev->param.total_bytes_per_chunk);
+ 
+       if (retval == 0)
+               return YAFFS_OK;
+@@ -201,41 +212,41 @@ int nandmtd2_MarkNANDBlockBad(struct yaf
+ 
+ }
+ 
+-int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+-                          yaffs_BlockState *state, __u32 *sequenceNumber)
++int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
++                          yaffs_block_state_t *state, __u32 *seq_number)
+ {
+-      struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
++      struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+       int retval;
+ 
+       T(YAFFS_TRACE_MTD,
+-        (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), blockNo));
++        (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), block_no));
+       retval =
+           mtd->block_isbad(mtd,
+-                           blockNo * dev->nChunksPerBlock *
+-                           dev->totalBytesPerChunk);
++                           block_no * dev->param.chunks_per_block *
++                           dev->param.total_bytes_per_chunk);
+ 
+       if (retval) {
+               T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR)));
+ 
+               *state = YAFFS_BLOCK_STATE_DEAD;
+-              *sequenceNumber = 0;
++              *seq_number = 0;
+       } else {
+-              yaffs_ExtendedTags t;
++              yaffs_ext_tags t;
+               nandmtd2_ReadChunkWithTagsFromNAND(dev,
+-                                                 blockNo *
+-                                                 dev->nChunksPerBlock, NULL,
++                                                 block_no *
++                                                 dev->param.chunks_per_block, NULL,
+                                                  &t);
+ 
+-              if (t.chunkUsed) {
+-                      *sequenceNumber = t.sequenceNumber;
++              if (t.chunk_used) {
++                      *seq_number = t.seq_number;
+                       *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
+               } else {
+-                      *sequenceNumber = 0;
++                      *seq_number = 0;
+                       *state = YAFFS_BLOCK_STATE_EMPTY;
+               }
+       }
+       T(YAFFS_TRACE_MTD,
+-        (TSTR("block is bad seq %d state %d" TENDSTR), *sequenceNumber,
++        (TSTR("block is bad seq %d state %d" TENDSTR), *seq_number,
+          *state));
+ 
+       if (retval == 0)
+--- a/fs/yaffs2/yaffs_mtdif2.h
++++ b/fs/yaffs2/yaffs_mtdif2.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -17,13 +17,13 @@
+ #define __YAFFS_MTDIF2_H__
+ 
+ #include "yaffs_guts.h"
+-int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
++int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk,
+                               const __u8 *data,
+-                              const yaffs_ExtendedTags *tags);
+-int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
+-                              __u8 *data, yaffs_ExtendedTags *tags);
+-int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
+-int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+-                      yaffs_BlockState *state, __u32 *sequenceNumber);
++                              const yaffs_ext_tags *tags);
++int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk,
++                              __u8 *data, yaffs_ext_tags *tags);
++int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no);
++int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
++                      yaffs_block_state_t *state, __u32 *seq_number);
+ 
+ #endif
+--- a/fs/yaffs2/yaffs_mtdif.c
++++ b/fs/yaffs2/yaffs_mtdif.c
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -11,9 +11,6 @@
+  * published by the Free Software Foundation.
+  */
+ 
+-const char *yaffs_mtdif_c_version =
+-      "$Id: yaffs_mtdif.c,v 1.22 2009-03-06 17:20:51 wookey Exp $";
+-
+ #include "yportenv.h"
+ 
+ 
+@@ -24,208 +21,26 @@ const char *yaffs_mtdif_c_version =
+ #include "linux/time.h"
+ #include "linux/mtd/nand.h"
+ 
+-#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 18))
+-static struct nand_oobinfo yaffs_oobinfo = {
+-      .useecc = 1,
+-      .eccbytes = 6,
+-      .eccpos = {8, 9, 10, 13, 14, 15}
+-};
+-
+-static struct nand_oobinfo yaffs_noeccinfo = {
+-      .useecc = 0,
+-};
+-#endif
+-
+-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+-static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob)
+-{
+-      oob[0] = spare->tagByte0;
+-      oob[1] = spare->tagByte1;
+-      oob[2] = spare->tagByte2;
+-      oob[3] = spare->tagByte3;
+-      oob[4] = spare->tagByte4;
+-      oob[5] = spare->tagByte5 & 0x3f;
+-      oob[5] |= spare->blockStatus == 'Y' ? 0 : 0x80;
+-      oob[5] |= spare->pageStatus == 0 ? 0 : 0x40;
+-      oob[6] = spare->tagByte6;
+-      oob[7] = spare->tagByte7;
+-}
+-
+-static inline void translate_oob2spare(yaffs_Spare *spare, __u8 *oob)
+-{
+-      struct yaffs_NANDSpare *nspare = (struct yaffs_NANDSpare *)spare;
+-      spare->tagByte0 = oob[0];
+-      spare->tagByte1 = oob[1];
+-      spare->tagByte2 = oob[2];
+-      spare->tagByte3 = oob[3];
+-      spare->tagByte4 = oob[4];
+-      spare->tagByte5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f;
+-      spare->blockStatus = oob[5] & 0x80 ? 0xff : 'Y';
+-      spare->pageStatus = oob[5] & 0x40 ? 0xff : 0;
+-      spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff;
+-      spare->tagByte6 = oob[6];
+-      spare->tagByte7 = oob[7];
+-      spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff;
+-
+-      nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */
+-}
+-#endif
+-
+-int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND,
+-                           const __u8 *data, const yaffs_Spare *spare)
+-{
+-      struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+-      struct mtd_oob_ops ops;
+-#endif
+-      size_t dummy;
+-      int retval = 0;
+-
+-      loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
+-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+-      __u8 spareAsBytes[8]; /* OOB */
+-
+-      if (data && !spare)
+-              retval = mtd->write(mtd, addr, dev->nDataBytesPerChunk,
+-                              &dummy, data);
+-      else if (spare) {
+-              if (dev->useNANDECC) {
+-                      translate_spare2oob(spare, spareAsBytes);
+-                      ops.mode = MTD_OOB_AUTO;
+-                      ops.ooblen = 8; /* temp hack */
+-              } else {
+-                      ops.mode = MTD_OOB_RAW;
+-                      ops.ooblen = YAFFS_BYTES_PER_SPARE;
+-              }
+-              ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen;
+-              ops.datbuf = (u8 *)data;
+-              ops.ooboffs = 0;
+-              ops.oobbuf = spareAsBytes;
+-              retval = mtd->write_oob(mtd, addr, &ops);
+-      }
+-#else
+-      __u8 *spareAsBytes = (__u8 *) spare;
+-
+-      if (data && spare) {
+-              if (dev->useNANDECC)
+-                      retval =
+-                          mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
+-                                         &dummy, data, spareAsBytes,
+-                                         &yaffs_oobinfo);
+-              else
+-                      retval =
+-                          mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
+-                                         &dummy, data, spareAsBytes,
+-                                         &yaffs_noeccinfo);
+-      } else {
+-              if (data)
+-                      retval =
+-                          mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy,
+-                                     data);
+-              if (spare)
+-                      retval =
+-                          mtd->write_oob(mtd, addr, YAFFS_BYTES_PER_SPARE,
+-                                         &dummy, spareAsBytes);
+-      }
+-#endif
+-
+-      if (retval == 0)
+-              return YAFFS_OK;
+-      else
+-              return YAFFS_FAIL;
+-}
+-
+-int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data,
+-                            yaffs_Spare *spare)
+-{
+-      struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+-      struct mtd_oob_ops ops;
+-#endif
+-      size_t dummy;
+-      int retval = 0;
++#include "yaffs_linux.h"
+ 
+-      loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
+-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
+-      __u8 spareAsBytes[8]; /* OOB */
+-
+-      if (data && !spare)
+-              retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk,
+-                              &dummy, data);
+-      else if (spare) {
+-              if (dev->useNANDECC) {
+-                      ops.mode = MTD_OOB_AUTO;
+-                      ops.ooblen = 8; /* temp hack */
+-              } else {
+-                      ops.mode = MTD_OOB_RAW;
+-                      ops.ooblen = YAFFS_BYTES_PER_SPARE;
+-              }
+-              ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen;
+-              ops.datbuf = data;
+-              ops.ooboffs = 0;
+-              ops.oobbuf = spareAsBytes;
+-              retval = mtd->read_oob(mtd, addr, &ops);
+-              if (dev->useNANDECC)
+-                      translate_oob2spare(spare, spareAsBytes);
+-      }
+-#else
+-      __u8 *spareAsBytes = (__u8 *) spare;
+-
+-      if (data && spare) {
+-              if (dev->useNANDECC) {
+-                      /* Careful, this call adds 2 ints */
+-                      /* to the end of the spare data.  Calling function */
+-                      /* should allocate enough memory for spare, */
+-                      /* i.e. [YAFFS_BYTES_PER_SPARE+2*sizeof(int)]. */
+-                      retval =
+-                          mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
+-                                        &dummy, data, spareAsBytes,
+-                                        &yaffs_oobinfo);
+-              } else {
+-                      retval =
+-                          mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
+-                                        &dummy, data, spareAsBytes,
+-                                        &yaffs_noeccinfo);
+-              }
+-      } else {
+-              if (data)
+-                      retval =
+-                          mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy,
+-                                    data);
+-              if (spare)
+-                      retval =
+-                          mtd->read_oob(mtd, addr, YAFFS_BYTES_PER_SPARE,
+-                                        &dummy, spareAsBytes);
+-      }
+-#endif
+-
+-      if (retval == 0)
+-              return YAFFS_OK;
+-      else
+-              return YAFFS_FAIL;
+-}
+-
+-int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber)
++int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber)
+ {
+-      struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
++      struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+       __u32 addr =
+-          ((loff_t) blockNumber) * dev->nDataBytesPerChunk
+-              * dev->nChunksPerBlock;
++          ((loff_t) blockNumber) * dev->param.total_bytes_per_chunk
++              * dev->param.chunks_per_block;
+       struct erase_info ei;
++      
+       int retval = 0;
+ 
+       ei.mtd = mtd;
+       ei.addr = addr;
+-      ei.len = dev->nDataBytesPerChunk * dev->nChunksPerBlock;
++      ei.len = dev->param.total_bytes_per_chunk * dev->param.chunks_per_block;
+       ei.time = 1000;
+       ei.retries = 2;
+       ei.callback = NULL;
+       ei.priv = (u_long) dev;
+ 
+-      /* Todo finish off the ei if required */
+-
+-      sema_init(&dev->sem, 0);
+-
+       retval = mtd->erase(mtd, &ei);
+ 
+       if (retval == 0)
+@@ -234,7 +49,7 @@ int nandmtd_EraseBlockInNAND(yaffs_Devic
+               return YAFFS_FAIL;
+ }
+ 
+-int nandmtd_InitialiseNAND(yaffs_Device *dev)
++int nandmtd_InitialiseNAND(yaffs_dev_t *dev)
+ {
+       return YAFFS_OK;
+ }
+--- a/fs/yaffs2/yaffs_mtdif.h
++++ b/fs/yaffs2/yaffs_mtdif.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -22,11 +22,6 @@
+ extern struct nand_oobinfo yaffs_oobinfo;
+ extern struct nand_oobinfo yaffs_noeccinfo;
+ #endif
+-
+-int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND,
+-                      const __u8 *data, const yaffs_Spare *spare);
+-int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data,
+-                      yaffs_Spare *spare);
+-int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber);
+-int nandmtd_InitialiseNAND(yaffs_Device *dev);
++int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber);
++int nandmtd_InitialiseNAND(yaffs_dev_t *dev);
+ #endif
+--- /dev/null
++++ b/fs/yaffs2/yaffs_nameval.c
+@@ -0,0 +1,197 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/*
++ * This simple implementation of a name-value store assumes a small number of values and fits
++ * into a small finite buffer.
++ *
++ * Each attribute is stored as a record:
++ *  sizeof(int) bytes   record size.
++ *  strnlen+1 bytes name null terminated.
++ *  nbytes    value.
++ *  ----------
++ *  total size  stored in record size 
++ *
++ * This code has not been tested with unicode yet.
++ */
++
++
++#include "yaffs_nameval.h"
++
++#include "yportenv.h"
++ 
++static int nval_find(const char *xb, int xb_size, const YCHAR *name,
++              int *exist_size)
++{
++      int pos=0;
++      int size;
++
++      memcpy(&size,xb,sizeof(int));
++      while(size > 0 && (size < xb_size) && (pos + size < xb_size)){
++              if(yaffs_strncmp((YCHAR *)(xb+pos+sizeof(int)),name,size) == 0){
++                      if(exist_size)
++                              *exist_size = size;
++                      return pos;
++              }
++              pos += size;
++              if(pos < xb_size -sizeof(int))
++                      memcpy(&size,xb + pos,sizeof(int));
++              else
++                      size = 0;
++      }
++      if(exist_size)
++              *exist_size = 0;
++      return -1;
++}
++
++static int nval_used(const char *xb, int xb_size)
++{
++      int pos=0;
++      int size;
++
++      memcpy(&size,xb + pos,sizeof(int));
++      while(size > 0 && (size < xb_size) && (pos + size < xb_size)){
++              pos += size;
++              if(pos < xb_size -sizeof(int))
++                      memcpy(&size,xb + pos,sizeof(int));
++              else
++                      size = 0;
++      }
++      return pos;
++}
++
++int nval_del(char *xb, int xb_size, const YCHAR *name)
++{
++      int pos  = nval_find(xb, xb_size, name, NULL);
++      int size;
++      
++      if(pos >= 0 && pos < xb_size){
++              /* Find size, shift rest over this record, then zero out the rest of buffer */
++              memcpy(&size,xb+pos,sizeof(int));
++              memcpy(xb + pos, xb + pos + size, xb_size - (pos + size));
++              memset(xb + (xb_size - size),0,size);
++              return 0;
++      } else
++              return -ENODATA;
++}
++
++int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags)
++{
++      int pos;
++      int namelen = yaffs_strnlen(name,xb_size);
++      int reclen;
++      int size_exist = 0;
++      int space;
++      int start;
++
++      pos = nval_find(xb,xb_size,name, &size_exist);
++
++      if(flags & XATTR_CREATE && pos >= 0)
++              return -EEXIST;
++      if(flags & XATTR_REPLACE && pos < 0)
++              return -ENODATA;
++
++      start = nval_used(xb,xb_size);
++      space = xb_size - start + size_exist;
++
++      reclen = (sizeof(int) + namelen + 1 + bsize);
++
++      if(reclen > space)
++              return -ENOSPC;
++
++      if(pos >= 0){
++              nval_del(xb,xb_size,name);
++              start = nval_used(xb, xb_size);
++      }
++
++      pos = start;
++
++      memcpy(xb + pos,&reclen,sizeof(int));
++      pos +=sizeof(int);
++      yaffs_strncpy((YCHAR *)(xb + pos), name, reclen);
++      pos+= (namelen+1);
++      memcpy(xb + pos,buf,bsize);
++      return 0;
++}
++
++int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize)
++{
++      int pos = nval_find(xb,xb_size,name,NULL);
++      int size;
++      
++      if(pos >= 0 && pos< xb_size){
++              
++              memcpy(&size,xb +pos,sizeof(int));
++              pos+=sizeof(int); /* advance past record length */
++              size -= sizeof(int);
++
++              /* Advance over name string */
++              while(xb[pos] && size > 0 && pos < xb_size){
++                      pos++;
++                      size--;
++              }
++              /*Advance over NUL */
++              pos++;
++              size--;
++
++              if(size <= bsize){
++                      memcpy(buf,xb + pos,size);
++                      return size;
++              }
++              
++      }
++      if(pos >= 0)
++              return -ERANGE;
++      else
++              return -ENODATA;
++}
++
++int nval_list(const char *xb, int xb_size, char *buf, int bsize)
++{
++      int pos = 0;
++      int size;
++      int name_len;
++      int ncopied = 0;
++      int filled = 0;
++
++      memcpy(&size,xb + pos,sizeof(int));
++      while(size > sizeof(int) && size <= xb_size && (pos + size) < xb_size && !filled){
++              pos+= sizeof(int);
++              size-=sizeof(int);
++              name_len = yaffs_strnlen((YCHAR *)(xb + pos), size);
++              if(ncopied + name_len + 1 < bsize){
++                      memcpy(buf,xb+pos,name_len * sizeof(YCHAR));
++                      buf+= name_len;
++                      *buf = '\0';
++                      buf++;
++                      if(sizeof(YCHAR) > 1){
++                              *buf = '\0';
++                              buf++;
++                      }
++                      ncopied += (name_len+1);
++              } else
++                      filled = 1;
++              pos+=size;
++              if(pos < xb_size -sizeof(int))
++                      memcpy(&size,xb + pos,sizeof(int));
++              else
++                      size = 0;
++      }
++      return ncopied;
++}
++
++
++int nval_hasvalues(const char *xb, int xb_size)
++{
++      return nval_used(xb, xb_size) > 0;
++}
+--- /dev/null
++++ b/fs/yaffs2/yaffs_nameval.h
+@@ -0,0 +1,25 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++#ifndef __NAMEVAL_H__
++#define __NAMEVAL_H__
++
++#include "yportenv.h"
++
++int nval_del(char *xb, int xb_size, const YCHAR *name);
++int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags);
++int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize);
++int nval_list(const char *xb, int xb_size, char *buf, int bsize);
++int nval_hasvalues(const char *xb, int xb_size);
++#endif
+--- a/fs/yaffs2/yaffs_nand.c
++++ b/fs/yaffs2/yaffs_nand.c
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -11,124 +11,129 @@
+  * published by the Free Software Foundation.
+  */
+ 
+-const char *yaffs_nand_c_version =
+-      "$Id: yaffs_nand.c,v 1.10 2009-03-06 17:20:54 wookey Exp $";
+-
+ #include "yaffs_nand.h"
+ #include "yaffs_tagscompat.h"
+ #include "yaffs_tagsvalidity.h"
+ 
+ #include "yaffs_getblockinfo.h"
+ 
+-int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
++int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk,
+                                          __u8 *buffer,
+-                                         yaffs_ExtendedTags *tags)
++                                         yaffs_ext_tags *tags)
+ {
+       int result;
+-      yaffs_ExtendedTags localTags;
++      yaffs_ext_tags localTags;
++
++      int realignedChunkInNAND = nand_chunk - dev->chunk_offset;
+ 
+-      int realignedChunkInNAND = chunkInNAND - dev->chunkOffset;
++      dev->n_page_reads++;
+ 
+       /* If there are no tags provided, use local tags to get prioritised gc working */
+       if (!tags)
+               tags = &localTags;
+ 
+-      if (dev->readChunkWithTagsFromNAND)
+-              result = dev->readChunkWithTagsFromNAND(dev, realignedChunkInNAND, buffer,
++      if (dev->param.read_chunk_tags_fn)
++              result = dev->param.read_chunk_tags_fn(dev, realignedChunkInNAND, buffer,
+                                                     tags);
+       else
+-              result = yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev,
++              result = yaffs_tags_compat_rd(dev,
+                                                                       realignedChunkInNAND,
+                                                                       buffer,
+                                                                       tags);
+       if (tags &&
+-         tags->eccResult > YAFFS_ECC_RESULT_NO_ERROR) {
++         tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
+ 
+-              yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, chunkInNAND/dev->nChunksPerBlock);
+-              yaffs_HandleChunkError(dev, bi);
++              yaffs_block_info_t *bi;
++              bi = yaffs_get_block_info(dev, nand_chunk/dev->param.chunks_per_block);
++              yaffs_handle_chunk_error(dev, bi);
+       }
+ 
+       return result;
+ }
+ 
+-int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev,
+-                                                 int chunkInNAND,
++int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev,
++                                                 int nand_chunk,
+                                                  const __u8 *buffer,
+-                                                 yaffs_ExtendedTags *tags)
++                                                 yaffs_ext_tags *tags)
+ {
+-      chunkInNAND -= dev->chunkOffset;
++
++      dev->n_page_writes++;
++
++      nand_chunk -= dev->chunk_offset;
+ 
+ 
+       if (tags) {
+-              tags->sequenceNumber = dev->sequenceNumber;
+-              tags->chunkUsed = 1;
+-              if (!yaffs_ValidateTags(tags)) {
++              tags->seq_number = dev->seq_number;
++              tags->chunk_used = 1;
++              if (!yaffs_validate_tags(tags)) {
+                       T(YAFFS_TRACE_ERROR,
+                         (TSTR("Writing uninitialised tags" TENDSTR)));
+                       YBUG();
+               }
+               T(YAFFS_TRACE_WRITE,
+-                (TSTR("Writing chunk %d tags %d %d" TENDSTR), chunkInNAND,
+-                 tags->objectId, tags->chunkId));
++                (TSTR("Writing chunk %d tags %d %d" TENDSTR), nand_chunk,
++                 tags->obj_id, tags->chunk_id));
+       } else {
+               T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR)));
+               YBUG();
+       }
+ 
+-      if (dev->writeChunkWithTagsToNAND)
+-              return dev->writeChunkWithTagsToNAND(dev, chunkInNAND, buffer,
++      if (dev->param.write_chunk_tags_fn)
++              return dev->param.write_chunk_tags_fn(dev, nand_chunk, buffer,
+                                                    tags);
+       else
+-              return yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(dev,
+-                                                                     chunkInNAND,
++              return yaffs_tags_compat_wr(dev,
++                                                                     nand_chunk,
+                                                                      buffer,
+                                                                      tags);
+ }
+ 
+-int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo)
++int yaffs_mark_bad(yaffs_dev_t *dev, int block_no)
+ {
+-      blockNo -= dev->blockOffset;
++      block_no -= dev->block_offset;
++
+ 
+-;
+-      if (dev->markNANDBlockBad)
+-              return dev->markNANDBlockBad(dev, blockNo);
++      if (dev->param.bad_block_fn)
++              return dev->param.bad_block_fn(dev, block_no);
+       else
+-              return yaffs_TagsCompatabilityMarkNANDBlockBad(dev, blockNo);
++              return yaffs_tags_compat_mark_bad(dev, block_no);
+ }
+ 
+-int yaffs_QueryInitialBlockState(yaffs_Device *dev,
+-                                               int blockNo,
+-                                               yaffs_BlockState *state,
+-                                               __u32 *sequenceNumber)
++int yaffs_query_init_block_state(yaffs_dev_t *dev,
++                                               int block_no,
++                                               yaffs_block_state_t *state,
++                                               __u32 *seq_number)
+ {
+-      blockNo -= dev->blockOffset;
++      block_no -= dev->block_offset;
+ 
+-      if (dev->queryNANDBlock)
+-              return dev->queryNANDBlock(dev, blockNo, state, sequenceNumber);
++      if (dev->param.query_block_fn)
++              return dev->param.query_block_fn(dev, block_no, state, seq_number);
+       else
+-              return yaffs_TagsCompatabilityQueryNANDBlock(dev, blockNo,
++              return yaffs_tags_compat_query_block(dev, block_no,
+                                                            state,
+-                                                           sequenceNumber);
++                                                           seq_number);
+ }
+ 
+ 
+-int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
+-                                int blockInNAND)
++int yaffs_erase_block(struct yaffs_dev_s *dev,
++                                int flash_block)
+ {
+       int result;
+ 
+-      blockInNAND -= dev->blockOffset;
++      flash_block -= dev->block_offset;
+ 
++      dev->n_erasures++;
+ 
+-      dev->nBlockErasures++;
+-      result = dev->eraseBlockInNAND(dev, blockInNAND);
++      result = dev->param.erase_fn(dev, flash_block);
+ 
+       return result;
+ }
+ 
+-int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev)
++int yaffs_init_nand(struct yaffs_dev_s *dev)
+ {
+-      return dev->initialiseNAND(dev);
++      if(dev->param.initialise_flash_fn)
++              return dev->param.initialise_flash_fn(dev);
++      return YAFFS_OK;
+ }
+ 
+ 
+--- a/fs/yaffs2/yaffs_nandemul2k.h
++++ b/fs/yaffs2/yaffs_nandemul2k.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -20,18 +20,18 @@
+ 
+ #include "yaffs_guts.h"
+ 
+-int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
+-                                      int chunkInNAND, const __u8 *data,
+-                                      const yaffs_ExtendedTags *tags);
+-int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_DeviceStruct *dev,
+-                                       int chunkInNAND, __u8 *data,
+-                                       yaffs_ExtendedTags *tags);
+-int nandemul2k_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
+-int nandemul2k_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+-                            yaffs_BlockState *state, __u32 *sequenceNumber);
+-int nandemul2k_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
+-                              int blockInNAND);
+-int nandemul2k_InitialiseNAND(struct yaffs_DeviceStruct *dev);
++int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_dev_s *dev,
++                                      int nand_chunk, const __u8 *data,
++                                      const yaffs_ext_tags *tags);
++int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_dev_s *dev,
++                                       int nand_chunk, __u8 *data,
++                                       yaffs_ext_tags *tags);
++int nandemul2k_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no);
++int nandemul2k_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
++                            yaffs_block_state_t *state, __u32 *seq_number);
++int nandemul2k_EraseBlockInNAND(struct yaffs_dev_s *dev,
++                              int flash_block);
++int nandemul2k_InitialiseNAND(struct yaffs_dev_s *dev);
+ int nandemul2k_GetBytesPerChunk(void);
+ int nandemul2k_GetChunksPerBlock(void);
+ int nandemul2k_GetNumberOfBlocks(void);
+--- a/fs/yaffs2/yaffs_nand.h
++++ b/fs/yaffs2/yaffs_nand.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -19,26 +19,26 @@
+ 
+ 
+ 
+-int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
++int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk,
+                                       __u8 *buffer,
+-                                      yaffs_ExtendedTags *tags);
++                                      yaffs_ext_tags *tags);
+ 
+-int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev,
+-                                              int chunkInNAND,
++int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev,
++                                              int nand_chunk,
+                                               const __u8 *buffer,
+-                                              yaffs_ExtendedTags *tags);
++                                              yaffs_ext_tags *tags);
+ 
+-int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo);
++int yaffs_mark_bad(yaffs_dev_t *dev, int block_no);
+ 
+-int yaffs_QueryInitialBlockState(yaffs_Device *dev,
+-                                              int blockNo,
+-                                              yaffs_BlockState *state,
+-                                              unsigned *sequenceNumber);
++int yaffs_query_init_block_state(yaffs_dev_t *dev,
++                                              int block_no,
++                                              yaffs_block_state_t *state,
++                                              unsigned *seq_number);
+ 
+-int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
+-                                int blockInNAND);
++int yaffs_erase_block(struct yaffs_dev_s *dev,
++                                int flash_block);
+ 
+-int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev);
++int yaffs_init_nand(struct yaffs_dev_s *dev);
+ 
+ #endif
+ 
+--- a/fs/yaffs2/yaffs_packedtags1.c
++++ b/fs/yaffs2/yaffs_packedtags1.c
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -14,37 +14,37 @@
+ #include "yaffs_packedtags1.h"
+ #include "yportenv.h"
+ 
+-void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t)
++void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t)
+ {
+-      pt->chunkId = t->chunkId;
+-      pt->serialNumber = t->serialNumber;
+-      pt->byteCount = t->byteCount;
+-      pt->objectId = t->objectId;
++      pt->chunk_id = t->chunk_id;
++      pt->serial_number = t->serial_number;
++      pt->n_bytes = t->n_bytes;
++      pt->obj_id = t->obj_id;
+       pt->ecc = 0;
+-      pt->deleted = (t->chunkDeleted) ? 0 : 1;
++      pt->deleted = (t->is_deleted) ? 0 : 1;
+       pt->unusedStuff = 0;
+       pt->shouldBeFF = 0xFFFFFFFF;
+ 
+ }
+ 
+-void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt)
++void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt)
+ {
+       static const __u8 allFF[] =
+           { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff };
+ 
+       if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) {
+-              t->blockBad = 0;
++              t->block_bad = 0;
+               if (pt->shouldBeFF != 0xFFFFFFFF)
+-                      t->blockBad = 1;
+-              t->chunkUsed = 1;
+-              t->objectId = pt->objectId;
+-              t->chunkId = pt->chunkId;
+-              t->byteCount = pt->byteCount;
+-              t->eccResult = YAFFS_ECC_RESULT_NO_ERROR;
+-              t->chunkDeleted = (pt->deleted) ? 0 : 1;
+-              t->serialNumber = pt->serialNumber;
++                      t->block_bad = 1;
++              t->chunk_used = 1;
++              t->obj_id = pt->obj_id;
++              t->chunk_id = pt->chunk_id;
++              t->n_bytes = pt->n_bytes;
++              t->ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
++              t->is_deleted = (pt->deleted) ? 0 : 1;
++              t->serial_number = pt->serial_number;
+       } else {
+-              memset(t, 0, sizeof(yaffs_ExtendedTags));
++              memset(t, 0, sizeof(yaffs_ext_tags));
+       }
+ }
+--- a/fs/yaffs2/yaffs_packedtags1.h
++++ b/fs/yaffs2/yaffs_packedtags1.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -21,10 +21,10 @@
+ #include "yaffs_guts.h"
+ 
+ typedef struct {
+-      unsigned chunkId:20;
+-      unsigned serialNumber:2;
+-      unsigned byteCount:10;
+-      unsigned objectId:18;
++      unsigned chunk_id:20;
++      unsigned serial_number:2;
++      unsigned n_bytes:10;
++      unsigned obj_id:18;
+       unsigned ecc:12;
+       unsigned deleted:1;
+       unsigned unusedStuff:1;
+@@ -32,6 +32,6 @@ typedef struct {
+ 
+ } yaffs_PackedTags1;
+ 
+-void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t);
+-void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt);
++void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t);
++void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt);
+ #endif
+--- a/fs/yaffs2/yaffs_packedtags2.c
++++ b/fs/yaffs2/yaffs_packedtags2.c
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -13,6 +13,7 @@
+ 
+ #include "yaffs_packedtags2.h"
+ #include "yportenv.h"
++#include "yaffs_trace.h"
+ #include "yaffs_tagsvalidity.h"
+ 
+ /* This code packs a set of extended tags into a binary structure for
+@@ -24,7 +25,7 @@
+  * This is defined by having the EXTRA_HEADER_INFO_FLAG set.
+  */
+ 
+-/* Extra flags applied to chunkId */
++/* Extra flags applied to chunk_id */
+ 
+ #define EXTRA_HEADER_INFO_FLAG        0x80000000
+ #define EXTRA_SHRINK_FLAG     0x40000000
+@@ -42,53 +43,53 @@ static void yaffs_DumpPackedTags2TagsPar
+ {
+       T(YAFFS_TRACE_MTD,
+         (TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR),
+-         ptt->objectId, ptt->chunkId, ptt->byteCount,
+-         ptt->sequenceNumber));
++         ptt->obj_id, ptt->chunk_id, ptt->n_bytes,
++         ptt->seq_number));
+ }
+ static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 *pt)
+ {
+       yaffs_DumpPackedTags2TagsPart(&pt->t);
+ }
+ 
+-static void yaffs_DumpTags2(const yaffs_ExtendedTags *t)
++static void yaffs_DumpTags2(const yaffs_ext_tags *t)
+ {
+       T(YAFFS_TRACE_MTD,
+         (TSTR
+          ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte %d del %d ser %d seq %d"
+-          TENDSTR), t->eccResult, t->blockBad, t->chunkUsed, t->objectId,
+-         t->chunkId, t->byteCount, t->chunkDeleted, t->serialNumber,
+-         t->sequenceNumber));
++          TENDSTR), t->ecc_result, t->block_bad, t->chunk_used, t->obj_id,
++         t->chunk_id, t->n_bytes, t->is_deleted, t->serial_number,
++         t->seq_number));
+ 
+ }
+ 
+ void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *ptt,
+-              const yaffs_ExtendedTags *t)
++              const yaffs_ext_tags *t)
+ {
+-      ptt->chunkId = t->chunkId;
+-      ptt->sequenceNumber = t->sequenceNumber;
+-      ptt->byteCount = t->byteCount;
+-      ptt->objectId = t->objectId;
++      ptt->chunk_id = t->chunk_id;
++      ptt->seq_number = t->seq_number;
++      ptt->n_bytes = t->n_bytes;
++      ptt->obj_id = t->obj_id;
+ 
+-      if (t->chunkId == 0 && t->extraHeaderInfoAvailable) {
++      if (t->chunk_id == 0 && t->extra_available) {
+               /* Store the extra header info instead */
+-              /* We save the parent object in the chunkId */
+-              ptt->chunkId = EXTRA_HEADER_INFO_FLAG
+-                      | t->extraParentObjectId;
+-              if (t->extraIsShrinkHeader)
+-                      ptt->chunkId |= EXTRA_SHRINK_FLAG;
+-              if (t->extraShadows)
+-                      ptt->chunkId |= EXTRA_SHADOWS_FLAG;
+-
+-              ptt->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
+-              ptt->objectId |=
+-                  (t->extraObjectType << EXTRA_OBJECT_TYPE_SHIFT);
+-
+-              if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK)
+-                      ptt->byteCount = t->extraEquivalentObjectId;
+-              else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE)
+-                      ptt->byteCount = t->extraFileLength;
++              /* We save the parent object in the chunk_id */
++              ptt->chunk_id = EXTRA_HEADER_INFO_FLAG
++                      | t->extra_parent_id;
++              if (t->extra_is_shrink)
++                      ptt->chunk_id |= EXTRA_SHRINK_FLAG;
++              if (t->extra_shadows)
++                      ptt->chunk_id |= EXTRA_SHADOWS_FLAG;
++
++              ptt->obj_id &= ~EXTRA_OBJECT_TYPE_MASK;
++              ptt->obj_id |=
++                  (t->extra_obj_type << EXTRA_OBJECT_TYPE_SHIFT);
++
++              if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK)
++                      ptt->n_bytes = t->extra_equiv_id;
++              else if (t->extra_obj_type == YAFFS_OBJECT_TYPE_FILE)
++                      ptt->n_bytes = t->extra_length;
+               else
+-                      ptt->byteCount = 0;
++                      ptt->n_bytes = 0;
+       }
+ 
+       yaffs_DumpPackedTags2TagsPart(ptt);
+@@ -96,59 +97,56 @@ void yaffs_PackTags2TagsPart(yaffs_Packe
+ }
+ 
+ 
+-void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t)
++void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC)
+ {
+       yaffs_PackTags2TagsPart(&pt->t, t);
+ 
+-#ifndef YAFFS_IGNORE_TAGS_ECC
+-      {
+-              yaffs_ECCCalculateOther((unsigned char *)&pt->t,
++      if(tagsECC)
++              yaffs_ecc_calc_other((unsigned char *)&pt->t,
+                                       sizeof(yaffs_PackedTags2TagsPart),
+                                       &pt->ecc);
+-      }
+-#endif
+ }
+ 
+ 
+-void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t,
++void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t,
+               yaffs_PackedTags2TagsPart *ptt)
+ {
+ 
+-      memset(t, 0, sizeof(yaffs_ExtendedTags));
++      memset(t, 0, sizeof(yaffs_ext_tags));
+ 
+-      yaffs_InitialiseTags(t);
++      yaffs_init_tags(t);
+ 
+-      if (ptt->sequenceNumber != 0xFFFFFFFF) {
+-              t->blockBad = 0;
+-              t->chunkUsed = 1;
+-              t->objectId = ptt->objectId;
+-              t->chunkId = ptt->chunkId;
+-              t->byteCount = ptt->byteCount;
+-              t->chunkDeleted = 0;
+-              t->serialNumber = 0;
+-              t->sequenceNumber = ptt->sequenceNumber;
++      if (ptt->seq_number != 0xFFFFFFFF) {
++              t->block_bad = 0;
++              t->chunk_used = 1;
++              t->obj_id = ptt->obj_id;
++              t->chunk_id = ptt->chunk_id;
++              t->n_bytes = ptt->n_bytes;
++              t->is_deleted = 0;
++              t->serial_number = 0;
++              t->seq_number = ptt->seq_number;
+ 
+               /* Do extra header info stuff */
+ 
+-              if (ptt->chunkId & EXTRA_HEADER_INFO_FLAG) {
+-                      t->chunkId = 0;
+-                      t->byteCount = 0;
+-
+-                      t->extraHeaderInfoAvailable = 1;
+-                      t->extraParentObjectId =
+-                          ptt->chunkId & (~(ALL_EXTRA_FLAGS));
+-                      t->extraIsShrinkHeader =
+-                          (ptt->chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0;
+-                      t->extraShadows =
+-                          (ptt->chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0;
+-                      t->extraObjectType =
+-                          ptt->objectId >> EXTRA_OBJECT_TYPE_SHIFT;
+-                      t->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
++              if (ptt->chunk_id & EXTRA_HEADER_INFO_FLAG) {
++                      t->chunk_id = 0;
++                      t->n_bytes = 0;
++
++                      t->extra_available = 1;
++                      t->extra_parent_id =
++                          ptt->chunk_id & (~(ALL_EXTRA_FLAGS));
++                      t->extra_is_shrink =
++                          (ptt->chunk_id & EXTRA_SHRINK_FLAG) ? 1 : 0;
++                      t->extra_shadows =
++                          (ptt->chunk_id & EXTRA_SHADOWS_FLAG) ? 1 : 0;
++                      t->extra_obj_type =
++                          ptt->obj_id >> EXTRA_OBJECT_TYPE_SHIFT;
++                      t->obj_id &= ~EXTRA_OBJECT_TYPE_MASK;
+ 
+-                      if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK)
+-                              t->extraEquivalentObjectId = ptt->byteCount;
++                      if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK)
++                              t->extra_equiv_id = ptt->n_bytes;
+                       else
+-                              t->extraFileLength = ptt->byteCount;
++                              t->extra_length = ptt->n_bytes;
+               }
+       }
+ 
+@@ -158,49 +156,43 @@ void yaffs_UnpackTags2TagsPart(yaffs_Ext
+ }
+ 
+ 
+-void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt)
++void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC)
+ {
+ 
+-      yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++      yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+ 
+-      if (pt->t.sequenceNumber != 0xFFFFFFFF) {
+-              /* Page is in use */
+-#ifndef YAFFS_IGNORE_TAGS_ECC
+-              {
+-                      yaffs_ECCOther ecc;
+-                      int result;
+-                      yaffs_ECCCalculateOther((unsigned char *)&pt->t,
+-                                              sizeof
+-                                              (yaffs_PackedTags2TagsPart),
+-                                              &ecc);
+-                      result =
+-                          yaffs_ECCCorrectOther((unsigned char *)&pt->t,
+-                                                sizeof
+-                                                (yaffs_PackedTags2TagsPart),
+-                                                &pt->ecc, &ecc);
+-                      switch (result) {
++      if (pt->t.seq_number != 0xFFFFFFFF &&
++          tagsECC){
++              /* Chunk is in use and we need to do ECC */
++              
++              yaffs_ECCOther ecc;
++              int result;
++              yaffs_ecc_calc_other((unsigned char *)&pt->t,
++                                      sizeof(yaffs_PackedTags2TagsPart),
++                                      &ecc);
++              result = yaffs_ecc_correct_other((unsigned char *)&pt->t,
++                                              sizeof(yaffs_PackedTags2TagsPart),
++                                              &pt->ecc, &ecc);
++              switch (result) {
+                       case 0:
+-                              eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++                              ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+                               break;
+                       case 1:
+-                              eccResult = YAFFS_ECC_RESULT_FIXED;
++                              ecc_result = YAFFS_ECC_RESULT_FIXED;
+                               break;
+                       case -1:
+-                              eccResult = YAFFS_ECC_RESULT_UNFIXED;
++                              ecc_result = YAFFS_ECC_RESULT_UNFIXED;
+                               break;
+                       default:
+-                              eccResult = YAFFS_ECC_RESULT_UNKNOWN;
+-                      }
++                              ecc_result = YAFFS_ECC_RESULT_UNKNOWN;
+               }
+-#endif
+       }
+ 
+-      yaffs_UnpackTags2TagsPart(t, &pt->t);
++      yaffs_unpack_tags2tags_part(t, &pt->t);
+ 
+-      t->eccResult = eccResult;
++      t->ecc_result = ecc_result;
+ 
+       yaffs_DumpPackedTags2(pt);
+       yaffs_DumpTags2(t);
+-
+ }
+ 
+--- a/fs/yaffs2/yaffs_packedtags2.h
++++ b/fs/yaffs2/yaffs_packedtags2.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -22,10 +22,10 @@
+ #include "yaffs_ecc.h"
+ 
+ typedef struct {
+-      unsigned sequenceNumber;
+-      unsigned objectId;
+-      unsigned chunkId;
+-      unsigned byteCount;
++      unsigned seq_number;
++      unsigned obj_id;
++      unsigned chunk_id;
++      unsigned n_bytes;
+ } yaffs_PackedTags2TagsPart;
+ 
+ typedef struct {
+@@ -34,10 +34,10 @@ typedef struct {
+ } yaffs_PackedTags2;
+ 
+ /* Full packed tags with ECC, used for oob tags */
+-void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t);
+-void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt);
++void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC);
++void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC);
+ 
+ /* Only the tags part (no ECC for use with inband tags */
+-void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ExtendedTags *t);
+-void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t, yaffs_PackedTags2TagsPart *pt);
++void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ext_tags *t);
++void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t, yaffs_PackedTags2TagsPart *pt);
+ #endif
+--- a/fs/yaffs2/yaffs_qsort.h
++++ b/fs/yaffs2/yaffs_qsort.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -17,7 +17,18 @@
+ #ifndef __YAFFS_QSORT_H__
+ #define __YAFFS_QSORT_H__
+ 
++#ifdef __KERNEL__
++#include <linux/sort.h>
++
++extern void yaffs_qsort(void *const base, size_t total_elems, size_t size,
++                      int (*cmp)(const void *, const void *)){
++      sort(base, total_elems, size, cmp, NULL);
++}
++
++#else
++
+ extern void yaffs_qsort(void *const base, size_t total_elems, size_t size,
+                       int (*cmp)(const void *, const void *));
+ 
+ #endif
++#endif
+--- a/fs/yaffs2/yaffs_tagscompat.c
++++ b/fs/yaffs2/yaffs_tagscompat.c
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -15,19 +15,20 @@
+ #include "yaffs_tagscompat.h"
+ #include "yaffs_ecc.h"
+ #include "yaffs_getblockinfo.h"
++#include "yaffs_trace.h"
+ 
+-static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND);
++static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk);
+ #ifdef NOTYET
+-static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND);
+-static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
++static void yaffs_check_written_block(yaffs_dev_t *dev, int nand_chunk);
++static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk,
+                                    const __u8 *data,
+-                                   const yaffs_Spare *spare);
+-static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
+-                                  const yaffs_Spare *spare);
+-static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND);
++                                   const yaffs_spare *spare);
++static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk,
++                                  const yaffs_spare *spare);
++static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk);
+ #endif
+ 
+-static const char yaffs_countBitsTable[256] = {
++static const char yaffs_count_bits_table[256] = {
+       0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
+       1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
+       1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
+@@ -46,26 +47,26 @@ static const char yaffs_countBitsTable[2
+       4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8
+ };
+ 
+-int yaffs_CountBits(__u8 x)
++int yaffs_count_bits(__u8 x)
+ {
+       int retVal;
+-      retVal = yaffs_countBitsTable[x];
++      retVal = yaffs_count_bits_table[x];
+       return retVal;
+ }
+ 
+ /********** Tags ECC calculations  *********/
+ 
+-void yaffs_CalcECC(const __u8 *data, yaffs_Spare *spare)
++void yaffs_calc_ecc(const __u8 *data, yaffs_spare *spare)
+ {
+-      yaffs_ECCCalculate(data, spare->ecc1);
+-      yaffs_ECCCalculate(&data[256], spare->ecc2);
++      yaffs_ecc_cacl(data, spare->ecc1);
++      yaffs_ecc_cacl(&data[256], spare->ecc2);
+ }
+ 
+-void yaffs_CalcTagsECC(yaffs_Tags *tags)
++void yaffs_calc_tags_ecc(yaffs_tags_t *tags)
+ {
+       /* Calculate an ecc */
+ 
+-      unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes;
++      unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes;
+       unsigned i, j;
+       unsigned ecc = 0;
+       unsigned bit = 0;
+@@ -84,24 +85,24 @@ void yaffs_CalcTagsECC(yaffs_Tags *tags)
+ 
+ }
+ 
+-int yaffs_CheckECCOnTags(yaffs_Tags *tags)
++int yaffs_check_tags_ecc(yaffs_tags_t *tags)
+ {
+       unsigned ecc = tags->ecc;
+ 
+-      yaffs_CalcTagsECC(tags);
++      yaffs_calc_tags_ecc(tags);
+ 
+       ecc ^= tags->ecc;
+ 
+       if (ecc && ecc <= 64) {
+               /* TODO: Handle the failure better. Retire? */
+-              unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes;
++              unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes;
+ 
+               ecc--;
+ 
+               b[ecc / 8] ^= (1 << (ecc & 7));
+ 
+               /* Now recvalc the ecc */
+-              yaffs_CalcTagsECC(tags);
++              yaffs_calc_tags_ecc(tags);
+ 
+               return 1;       /* recovered error */
+       } else if (ecc) {
+@@ -115,76 +116,73 @@ int yaffs_CheckECCOnTags(yaffs_Tags *tag
+ 
+ /********** Tags **********/
+ 
+-static void yaffs_LoadTagsIntoSpare(yaffs_Spare *sparePtr,
+-                              yaffs_Tags *tagsPtr)
++static void yaffs_load_tags_to_spare(yaffs_spare *sparePtr,
++                              yaffs_tags_t *tagsPtr)
+ {
+-      yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr;
++      yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr;
+ 
+-      yaffs_CalcTagsECC(tagsPtr);
++      yaffs_calc_tags_ecc(tagsPtr);
+ 
+-      sparePtr->tagByte0 = tu->asBytes[0];
+-      sparePtr->tagByte1 = tu->asBytes[1];
+-      sparePtr->tagByte2 = tu->asBytes[2];
+-      sparePtr->tagByte3 = tu->asBytes[3];
+-      sparePtr->tagByte4 = tu->asBytes[4];
+-      sparePtr->tagByte5 = tu->asBytes[5];
+-      sparePtr->tagByte6 = tu->asBytes[6];
+-      sparePtr->tagByte7 = tu->asBytes[7];
++      sparePtr->tb0 = tu->as_bytes[0];
++      sparePtr->tb1 = tu->as_bytes[1];
++      sparePtr->tb2 = tu->as_bytes[2];
++      sparePtr->tb3 = tu->as_bytes[3];
++      sparePtr->tb4 = tu->as_bytes[4];
++      sparePtr->tb5 = tu->as_bytes[5];
++      sparePtr->tb6 = tu->as_bytes[6];
++      sparePtr->tb7 = tu->as_bytes[7];
+ }
+ 
+-static void yaffs_GetTagsFromSpare(yaffs_Device *dev, yaffs_Spare *sparePtr,
+-                              yaffs_Tags *tagsPtr)
++static void yaffs_get_tags_from_spare(yaffs_dev_t *dev, yaffs_spare *sparePtr,
++                              yaffs_tags_t *tagsPtr)
+ {
+-      yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr;
++      yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr;
+       int result;
+ 
+-      tu->asBytes[0] = sparePtr->tagByte0;
+-      tu->asBytes[1] = sparePtr->tagByte1;
+-      tu->asBytes[2] = sparePtr->tagByte2;
+-      tu->asBytes[3] = sparePtr->tagByte3;
+-      tu->asBytes[4] = sparePtr->tagByte4;
+-      tu->asBytes[5] = sparePtr->tagByte5;
+-      tu->asBytes[6] = sparePtr->tagByte6;
+-      tu->asBytes[7] = sparePtr->tagByte7;
++      tu->as_bytes[0] = sparePtr->tb0;
++      tu->as_bytes[1] = sparePtr->tb1;
++      tu->as_bytes[2] = sparePtr->tb2;
++      tu->as_bytes[3] = sparePtr->tb3;
++      tu->as_bytes[4] = sparePtr->tb4;
++      tu->as_bytes[5] = sparePtr->tb5;
++      tu->as_bytes[6] = sparePtr->tb6;
++      tu->as_bytes[7] = sparePtr->tb7;
+ 
+-      result = yaffs_CheckECCOnTags(tagsPtr);
++      result = yaffs_check_tags_ecc(tagsPtr);
+       if (result > 0)
+-              dev->tagsEccFixed++;
++              dev->n_tags_ecc_fixed++;
+       else if (result < 0)
+-              dev->tagsEccUnfixed++;
++              dev->n_tags_ecc_unfixed++;
+ }
+ 
+-static void yaffs_SpareInitialise(yaffs_Spare *spare)
++static void yaffs_spare_init(yaffs_spare *spare)
+ {
+-      memset(spare, 0xFF, sizeof(yaffs_Spare));
++      memset(spare, 0xFF, sizeof(yaffs_spare));
+ }
+ 
+-static int yaffs_WriteChunkToNAND(struct yaffs_DeviceStruct *dev,
+-                              int chunkInNAND, const __u8 *data,
+-                              yaffs_Spare *spare)
++static int yaffs_wr_nand(struct yaffs_dev_s *dev,
++                              int nand_chunk, const __u8 *data,
++                              yaffs_spare *spare)
+ {
+-      if (chunkInNAND < dev->startBlock * dev->nChunksPerBlock) {
++      if (nand_chunk < dev->param.start_block * dev->param.chunks_per_block) {
+               T(YAFFS_TRACE_ERROR,
+                 (TSTR("**>> yaffs chunk %d is not valid" TENDSTR),
+-                 chunkInNAND));
++                 nand_chunk));
+               return YAFFS_FAIL;
+       }
+ 
+-      dev->nPageWrites++;
+-      return dev->writeChunkToNAND(dev, chunkInNAND, data, spare);
++      return dev->param.write_chunk_fn(dev, nand_chunk, data, spare);
+ }
+ 
+-static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev,
+-                                 int chunkInNAND,
++static int yaffs_rd_chunk_nand(struct yaffs_dev_s *dev,
++                                 int nand_chunk,
+                                  __u8 *data,
+-                                 yaffs_Spare *spare,
+-                                 yaffs_ECCResult *eccResult,
++                                 yaffs_spare *spare,
++                                 yaffs_ecc_result *ecc_result,
+                                  int doErrorCorrection)
+ {
+       int retVal;
+-      yaffs_Spare localSpare;
+-
+-      dev->nPageReads++;
++      yaffs_spare localSpare;
+ 
+       if (!spare && data) {
+               /* If we don't have a real spare, then we use a local one. */
+@@ -192,107 +190,107 @@ static int yaffs_ReadChunkFromNAND(struc
+               spare = &localSpare;
+       }
+ 
+-      if (!dev->useNANDECC) {
+-              retVal = dev->readChunkFromNAND(dev, chunkInNAND, data, spare);
++      if (!dev->param.use_nand_ecc) {
++              retVal = dev->param.read_chunk_fn(dev, nand_chunk, data, spare);
+               if (data && doErrorCorrection) {
+                       /* Do ECC correction */
+                       /* Todo handle any errors */
+-                      int eccResult1, eccResult2;
++                      int ecc_result1, ecc_result2;
+                       __u8 calcEcc[3];
+ 
+-                      yaffs_ECCCalculate(data, calcEcc);
+-                      eccResult1 =
+-                          yaffs_ECCCorrect(data, spare->ecc1, calcEcc);
+-                      yaffs_ECCCalculate(&data[256], calcEcc);
+-                      eccResult2 =
+-                          yaffs_ECCCorrect(&data[256], spare->ecc2, calcEcc);
++                      yaffs_ecc_cacl(data, calcEcc);
++                      ecc_result1 =
++                          yaffs_ecc_correct(data, spare->ecc1, calcEcc);
++                      yaffs_ecc_cacl(&data[256], calcEcc);
++                      ecc_result2 =
++                          yaffs_ecc_correct(&data[256], spare->ecc2, calcEcc);
+ 
+-                      if (eccResult1 > 0) {
++                      if (ecc_result1 > 0) {
+                               T(YAFFS_TRACE_ERROR,
+                                 (TSTR
+                                  ("**>>yaffs ecc error fix performed on chunk %d:0"
+-                                  TENDSTR), chunkInNAND));
+-                              dev->eccFixed++;
+-                      } else if (eccResult1 < 0) {
++                                  TENDSTR), nand_chunk));
++                              dev->n_ecc_fixed++;
++                      } else if (ecc_result1 < 0) {
+                               T(YAFFS_TRACE_ERROR,
+                                 (TSTR
+                                  ("**>>yaffs ecc error unfixed on chunk %d:0"
+-                                  TENDSTR), chunkInNAND));
+-                              dev->eccUnfixed++;
++                                  TENDSTR), nand_chunk));
++                              dev->n_ecc_unfixed++;
+                       }
+ 
+-                      if (eccResult2 > 0) {
++                      if (ecc_result2 > 0) {
+                               T(YAFFS_TRACE_ERROR,
+                                 (TSTR
+                                  ("**>>yaffs ecc error fix performed on chunk %d:1"
+-                                  TENDSTR), chunkInNAND));
+-                              dev->eccFixed++;
+-                      } else if (eccResult2 < 0) {
++                                  TENDSTR), nand_chunk));
++                              dev->n_ecc_fixed++;
++                      } else if (ecc_result2 < 0) {
+                               T(YAFFS_TRACE_ERROR,
+                                 (TSTR
+                                  ("**>>yaffs ecc error unfixed on chunk %d:1"
+-                                  TENDSTR), chunkInNAND));
+-                              dev->eccUnfixed++;
++                                  TENDSTR), nand_chunk));
++                              dev->n_ecc_unfixed++;
+                       }
+ 
+-                      if (eccResult1 || eccResult2) {
++                      if (ecc_result1 || ecc_result2) {
+                               /* We had a data problem on this page */
+-                              yaffs_HandleReadDataError(dev, chunkInNAND);
++                              yaffs_handle_rd_data_error(dev, nand_chunk);
+                       }
+ 
+-                      if (eccResult1 < 0 || eccResult2 < 0)
+-                              *eccResult = YAFFS_ECC_RESULT_UNFIXED;
+-                      else if (eccResult1 > 0 || eccResult2 > 0)
+-                              *eccResult = YAFFS_ECC_RESULT_FIXED;
++                      if (ecc_result1 < 0 || ecc_result2 < 0)
++                              *ecc_result = YAFFS_ECC_RESULT_UNFIXED;
++                      else if (ecc_result1 > 0 || ecc_result2 > 0)
++                              *ecc_result = YAFFS_ECC_RESULT_FIXED;
+                       else
+-                              *eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++                              *ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+               }
+       } else {
+               /* Must allocate enough memory for spare+2*sizeof(int) */
+               /* for ecc results from device. */
+-              struct yaffs_NANDSpare nspare;
++              struct yaffs_nand_spare nspare;
+ 
+               memset(&nspare, 0, sizeof(nspare));
+ 
+-              retVal = dev->readChunkFromNAND(dev, chunkInNAND, data,
+-                                      (yaffs_Spare *) &nspare);
+-              memcpy(spare, &nspare, sizeof(yaffs_Spare));
++              retVal = dev->param.read_chunk_fn(dev, nand_chunk, data,
++                                      (yaffs_spare *) &nspare);
++              memcpy(spare, &nspare, sizeof(yaffs_spare));
+               if (data && doErrorCorrection) {
+                       if (nspare.eccres1 > 0) {
+                               T(YAFFS_TRACE_ERROR,
+                                 (TSTR
+                                  ("**>>mtd ecc error fix performed on chunk %d:0"
+-                                  TENDSTR), chunkInNAND));
++                                  TENDSTR), nand_chunk));
+                       } else if (nspare.eccres1 < 0) {
+                               T(YAFFS_TRACE_ERROR,
+                                 (TSTR
+                                  ("**>>mtd ecc error unfixed on chunk %d:0"
+-                                  TENDSTR), chunkInNAND));
++                                  TENDSTR), nand_chunk));
+                       }
+ 
+                       if (nspare.eccres2 > 0) {
+                               T(YAFFS_TRACE_ERROR,
+                                 (TSTR
+                                  ("**>>mtd ecc error fix performed on chunk %d:1"
+-                                  TENDSTR), chunkInNAND));
++                                  TENDSTR), nand_chunk));
+                       } else if (nspare.eccres2 < 0) {
+                               T(YAFFS_TRACE_ERROR,
+                                 (TSTR
+                                  ("**>>mtd ecc error unfixed on chunk %d:1"
+-                                  TENDSTR), chunkInNAND));
++                                  TENDSTR), nand_chunk));
+                       }
+ 
+                       if (nspare.eccres1 || nspare.eccres2) {
+                               /* We had a data problem on this page */
+-                              yaffs_HandleReadDataError(dev, chunkInNAND);
++                              yaffs_handle_rd_data_error(dev, nand_chunk);
+                       }
+ 
+                       if (nspare.eccres1 < 0 || nspare.eccres2 < 0)
+-                              *eccResult = YAFFS_ECC_RESULT_UNFIXED;
++                              *ecc_result = YAFFS_ECC_RESULT_UNFIXED;
+                       else if (nspare.eccres1 > 0 || nspare.eccres2 > 0)
+-                              *eccResult = YAFFS_ECC_RESULT_FIXED;
++                              *ecc_result = YAFFS_ECC_RESULT_FIXED;
+                       else
+-                              *eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++                              *ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+ 
+               }
+       }
+@@ -300,17 +298,17 @@ static int yaffs_ReadChunkFromNAND(struc
+ }
+ 
+ #ifdef NOTYET
+-static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
+-                                int chunkInNAND)
++static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev,
++                                int nand_chunk)
+ {
+       static int init;
+       static __u8 cmpbuf[YAFFS_BYTES_PER_CHUNK];
+       static __u8 data[YAFFS_BYTES_PER_CHUNK];
+       /* Might as well always allocate the larger size for */
+-      /* dev->useNANDECC == true; */
+-      static __u8 spare[sizeof(struct yaffs_NANDSpare)];
++      /* dev->param.use_nand_ecc == true; */
++      static __u8 spare[sizeof(struct yaffs_nand_spare)];
+ 
+-      dev->readChunkFromNAND(dev, chunkInNAND, data, (yaffs_Spare *) spare);
++      dev->param.read_chunk_fn(dev, nand_chunk, data, (yaffs_spare *) spare);
+ 
+       if (!init) {
+               memset(cmpbuf, 0xff, YAFFS_BYTES_PER_CHUNK);
+@@ -331,14 +329,14 @@ static int yaffs_CheckChunkErased(struct
+  * Functions for robustisizing
+  */
+ 
+-static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND)
++static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk)
+ {
+-      int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
++      int flash_block = nand_chunk / dev->param.chunks_per_block;
+ 
+       /* Mark the block for retirement */
+-      yaffs_GetBlockInfo(dev, blockInNAND + dev->blockOffset)->needsRetiring = 1;
++      yaffs_get_block_info(dev, flash_block + dev->block_offset)->needs_retiring = 1;
+       T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+-        (TSTR("**>>Block %d marked for retirement" TENDSTR), blockInNAND));
++        (TSTR("**>>Block %d marked for retirement" TENDSTR), flash_block));
+ 
+       /* TODO:
+        * Just do a garbage collection on the affected block
+@@ -348,44 +346,44 @@ static void yaffs_HandleReadDataError(ya
+ }
+ 
+ #ifdef NOTYET
+-static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND)
++static void yaffs_check_written_block(yaffs_dev_t *dev, int nand_chunk)
+ {
+ }
+ 
+-static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
++static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk,
+                                    const __u8 *data,
+-                                   const yaffs_Spare *spare)
++                                   const yaffs_spare *spare)
+ {
+ }
+ 
+-static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
+-                                  const yaffs_Spare *spare)
++static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk,
++                                  const yaffs_spare *spare)
+ {
+ }
+ 
+-static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND)
++static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk)
+ {
+-      int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
++      int flash_block = nand_chunk / dev->param.chunks_per_block;
+ 
+       /* Mark the block for retirement */
+-      yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1;
++      yaffs_get_block_info(dev, flash_block)->needs_retiring = 1;
+       /* Delete the chunk */
+-      yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
++      yaffs_chunk_del(dev, nand_chunk, 1, __LINE__);
+ }
+ 
+-static int yaffs_VerifyCompare(const __u8 *d0, const __u8 *d1,
+-                             const yaffs_Spare *s0, const yaffs_Spare *s1)
++static int yaffs_verify_cmp(const __u8 *d0, const __u8 *d1,
++                             const yaffs_spare *s0, const yaffs_spare *s1)
+ {
+ 
+       if (memcmp(d0, d1, YAFFS_BYTES_PER_CHUNK) != 0 ||
+-          s0->tagByte0 != s1->tagByte0 ||
+-          s0->tagByte1 != s1->tagByte1 ||
+-          s0->tagByte2 != s1->tagByte2 ||
+-          s0->tagByte3 != s1->tagByte3 ||
+-          s0->tagByte4 != s1->tagByte4 ||
+-          s0->tagByte5 != s1->tagByte5 ||
+-          s0->tagByte6 != s1->tagByte6 ||
+-          s0->tagByte7 != s1->tagByte7 ||
++          s0->tb0 != s1->tb0 ||
++          s0->tb1 != s1->tb1 ||
++          s0->tb2 != s1->tb2 ||
++          s0->tb3 != s1->tb3 ||
++          s0->tb4 != s1->tb4 ||
++          s0->tb5 != s1->tb5 ||
++          s0->tb6 != s1->tb6 ||
++          s0->tb7 != s1->tb7 ||
+           s0->ecc1[0] != s1->ecc1[0] ||
+           s0->ecc1[1] != s1->ecc1[1] ||
+           s0->ecc1[2] != s1->ecc1[2] ||
+@@ -398,53 +396,53 @@ static int yaffs_VerifyCompare(const __u
+ }
+ #endif                                /* NOTYET */
+ 
+-int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev,
+-                                              int chunkInNAND,
++int yaffs_tags_compat_wr(yaffs_dev_t *dev,
++                                              int nand_chunk,
+                                               const __u8 *data,
+-                                              const yaffs_ExtendedTags *eTags)
++                                              const yaffs_ext_tags *eTags)
+ {
+-      yaffs_Spare spare;
+-      yaffs_Tags tags;
++      yaffs_spare spare;
++      yaffs_tags_t tags;
+ 
+-      yaffs_SpareInitialise(&spare);
++      yaffs_spare_init(&spare);
+ 
+-      if (eTags->chunkDeleted)
+-              spare.pageStatus = 0;
++      if (eTags->is_deleted)
++              spare.page_status = 0;
+       else {
+-              tags.objectId = eTags->objectId;
+-              tags.chunkId = eTags->chunkId;
++              tags.obj_id = eTags->obj_id;
++              tags.chunk_id = eTags->chunk_id;
+ 
+-              tags.byteCountLSB = eTags->byteCount & 0x3ff;
++              tags.n_bytes_lsb = eTags->n_bytes & 0x3ff;
+ 
+-              if (dev->nDataBytesPerChunk >= 1024)
+-                      tags.byteCountMSB = (eTags->byteCount >> 10) & 3;
++              if (dev->data_bytes_per_chunk >= 1024)
++                      tags.n_bytes_msb = (eTags->n_bytes >> 10) & 3;
+               else
+-                      tags.byteCountMSB = 3;
++                      tags.n_bytes_msb = 3;
+ 
+ 
+-              tags.serialNumber = eTags->serialNumber;
++              tags.serial_number = eTags->serial_number;
+ 
+-              if (!dev->useNANDECC && data)
+-                      yaffs_CalcECC(data, &spare);
++              if (!dev->param.use_nand_ecc && data)
++                      yaffs_calc_ecc(data, &spare);
+ 
+-              yaffs_LoadTagsIntoSpare(&spare, &tags);
++              yaffs_load_tags_to_spare(&spare, &tags);
+ 
+       }
+ 
+-      return yaffs_WriteChunkToNAND(dev, chunkInNAND, data, &spare);
++      return yaffs_wr_nand(dev, nand_chunk, data, &spare);
+ }
+ 
+-int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev,
+-                                                   int chunkInNAND,
++int yaffs_tags_compat_rd(yaffs_dev_t *dev,
++                                                   int nand_chunk,
+                                                    __u8 *data,
+-                                                   yaffs_ExtendedTags *eTags)
++                                                   yaffs_ext_tags *eTags)
+ {
+ 
+-      yaffs_Spare spare;
+-      yaffs_Tags tags;
+-      yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_UNKNOWN;
++      yaffs_spare spare;
++      yaffs_tags_t tags;
++      yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_UNKNOWN;
+ 
+-      static yaffs_Spare spareFF;
++      static yaffs_spare spareFF;
+       static int init;
+ 
+       if (!init) {
+@@ -452,33 +450,33 @@ int yaffs_TagsCompatabilityReadChunkWith
+               init = 1;
+       }
+ 
+-      if (yaffs_ReadChunkFromNAND
+-          (dev, chunkInNAND, data, &spare, &eccResult, 1)) {
++      if (yaffs_rd_chunk_nand
++          (dev, nand_chunk, data, &spare, &ecc_result, 1)) {
+               /* eTags may be NULL */
+               if (eTags) {
+ 
+                       int deleted =
+-                          (yaffs_CountBits(spare.pageStatus) < 7) ? 1 : 0;
++                          (yaffs_count_bits(spare.page_status) < 7) ? 1 : 0;
+ 
+-                      eTags->chunkDeleted = deleted;
+-                      eTags->eccResult = eccResult;
+-                      eTags->blockBad = 0;    /* We're reading it */
++                      eTags->is_deleted = deleted;
++                      eTags->ecc_result = ecc_result;
++                      eTags->block_bad = 0;   /* We're reading it */
+                       /* therefore it is not a bad block */
+-                      eTags->chunkUsed =
++                      eTags->chunk_used =
+                           (memcmp(&spareFF, &spare, sizeof(spareFF)) !=
+                            0) ? 1 : 0;
+ 
+-                      if (eTags->chunkUsed) {
+-                              yaffs_GetTagsFromSpare(dev, &spare, &tags);
++                      if (eTags->chunk_used) {
++                              yaffs_get_tags_from_spare(dev, &spare, &tags);
+ 
+-                              eTags->objectId = tags.objectId;
+-                              eTags->chunkId = tags.chunkId;
+-                              eTags->byteCount = tags.byteCountLSB;
++                              eTags->obj_id = tags.obj_id;
++                              eTags->chunk_id = tags.chunk_id;
++                              eTags->n_bytes = tags.n_bytes_lsb;
+ 
+-                              if (dev->nDataBytesPerChunk >= 1024)
+-                                      eTags->byteCount |= (((unsigned) tags.byteCountMSB) << 10);
++                              if (dev->data_bytes_per_chunk >= 1024)
++                                      eTags->n_bytes |= (((unsigned) tags.n_bytes_msb) << 10);
+ 
+-                              eTags->serialNumber = tags.serialNumber;
++                              eTags->serial_number = tags.serial_number;
+                       }
+               }
+ 
+@@ -488,49 +486,49 @@ int yaffs_TagsCompatabilityReadChunkWith
+       }
+ }
+ 
+-int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev,
+-                                          int blockInNAND)
++int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev,
++                                          int flash_block)
+ {
+ 
+-      yaffs_Spare spare;
++      yaffs_spare spare;
+ 
+-      memset(&spare, 0xff, sizeof(yaffs_Spare));
++      memset(&spare, 0xff, sizeof(yaffs_spare));
+ 
+-      spare.blockStatus = 'Y';
++      spare.block_status = 'Y';
+ 
+-      yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock, NULL,
++      yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block, NULL,
+                              &spare);
+-      yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock + 1,
++      yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block + 1,
+                              NULL, &spare);
+ 
+       return YAFFS_OK;
+ 
+ }
+ 
+-int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
+-                                        int blockNo,
+-                                        yaffs_BlockState *state,
+-                                        __u32 *sequenceNumber)
++int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev,
++                                        int block_no,
++                                        yaffs_block_state_t *state,
++                                        __u32 *seq_number)
+ {
+ 
+-      yaffs_Spare spare0, spare1;
+-      static yaffs_Spare spareFF;
++      yaffs_spare spare0, spare1;
++      static yaffs_spare spareFF;
+       static int init;
+-      yaffs_ECCResult dummy;
++      yaffs_ecc_result dummy;
+ 
+       if (!init) {
+               memset(&spareFF, 0xFF, sizeof(spareFF));
+               init = 1;
+       }
+ 
+-      *sequenceNumber = 0;
++      *seq_number = 0;
+ 
+-      yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock, NULL,
++      yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block, NULL,
+                               &spare0, &dummy, 1);
+-      yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock + 1, NULL,
++      yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block + 1, NULL,
+                               &spare1, &dummy, 1);
+ 
+-      if (yaffs_CountBits(spare0.blockStatus & spare1.blockStatus) < 7)
++      if (yaffs_count_bits(spare0.block_status & spare1.block_status) < 7)
+               *state = YAFFS_BLOCK_STATE_DEAD;
+       else if (memcmp(&spareFF, &spare0, sizeof(spareFF)) == 0)
+               *state = YAFFS_BLOCK_STATE_EMPTY;
+--- a/fs/yaffs2/yaffs_tagscompat.h
++++ b/fs/yaffs2/yaffs_tagscompat.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -17,23 +17,23 @@
+ #define __YAFFS_TAGSCOMPAT_H__
+ 
+ #include "yaffs_guts.h"
+-int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev,
+-                                              int chunkInNAND,
++int yaffs_tags_compat_wr(yaffs_dev_t *dev,
++                                              int nand_chunk,
+                                               const __u8 *data,
+-                                              const yaffs_ExtendedTags *tags);
+-int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev,
+-                                              int chunkInNAND,
++                                              const yaffs_ext_tags *tags);
++int yaffs_tags_compat_rd(yaffs_dev_t *dev,
++                                              int nand_chunk,
+                                               __u8 *data,
+-                                              yaffs_ExtendedTags *tags);
+-int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev,
+-                                          int blockNo);
+-int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
+-                                        int blockNo,
+-                                        yaffs_BlockState *state,
+-                                        __u32 *sequenceNumber);
++                                              yaffs_ext_tags *tags);
++int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev,
++                                          int block_no);
++int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev,
++                                        int block_no,
++                                        yaffs_block_state_t *state,
++                                        __u32 *seq_number);
+ 
+-void yaffs_CalcTagsECC(yaffs_Tags *tags);
+-int yaffs_CheckECCOnTags(yaffs_Tags *tags);
+-int yaffs_CountBits(__u8 byte);
++void yaffs_calc_tags_ecc(yaffs_tags_t *tags);
++int yaffs_check_tags_ecc(yaffs_tags_t *tags);
++int yaffs_count_bits(__u8 byte);
+ 
+ #endif
+--- a/fs/yaffs2/yaffs_tagsvalidity.c
++++ b/fs/yaffs2/yaffs_tagsvalidity.c
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -13,16 +13,16 @@
+ 
+ #include "yaffs_tagsvalidity.h"
+ 
+-void yaffs_InitialiseTags(yaffs_ExtendedTags *tags)
++void yaffs_init_tags(yaffs_ext_tags *tags)
+ {
+-      memset(tags, 0, sizeof(yaffs_ExtendedTags));
+-      tags->validMarker0 = 0xAAAAAAAA;
+-      tags->validMarker1 = 0x55555555;
++      memset(tags, 0, sizeof(yaffs_ext_tags));
++      tags->validity1 = 0xAAAAAAAA;
++      tags->validty1 = 0x55555555;
+ }
+ 
+-int yaffs_ValidateTags(yaffs_ExtendedTags *tags)
++int yaffs_validate_tags(yaffs_ext_tags *tags)
+ {
+-      return (tags->validMarker0 == 0xAAAAAAAA &&
+-              tags->validMarker1 == 0x55555555);
++      return (tags->validity1 == 0xAAAAAAAA &&
++              tags->validty1 == 0x55555555);
+ 
+ }
+--- a/fs/yaffs2/yaffs_tagsvalidity.h
++++ b/fs/yaffs2/yaffs_tagsvalidity.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -19,6 +19,6 @@
+ 
+ #include "yaffs_guts.h"
+ 
+-void yaffs_InitialiseTags(yaffs_ExtendedTags *tags);
+-int yaffs_ValidateTags(yaffs_ExtendedTags *tags);
++void yaffs_init_tags(yaffs_ext_tags *tags);
++int yaffs_validate_tags(yaffs_ext_tags *tags);
+ #endif
+--- /dev/null
++++ b/fs/yaffs2/yaffs_trace.h
+@@ -0,0 +1,60 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++
++#ifndef __YTRACE_H__
++#define __YTRACE_H__
++
++extern unsigned int yaffs_trace_mask;
++extern unsigned int yaffs_wr_attempts;
++
++/*
++ * Tracing flags.
++ * The flags masked in YAFFS_TRACE_ALWAYS are always traced.
++ */
++
++#define YAFFS_TRACE_OS                        0x00000002
++#define YAFFS_TRACE_ALLOCATE          0x00000004
++#define YAFFS_TRACE_SCAN              0x00000008
++#define YAFFS_TRACE_BAD_BLOCKS                0x00000010
++#define YAFFS_TRACE_ERASE             0x00000020
++#define YAFFS_TRACE_GC                        0x00000040
++#define YAFFS_TRACE_WRITE             0x00000080
++#define YAFFS_TRACE_TRACING           0x00000100
++#define YAFFS_TRACE_DELETION          0x00000200
++#define YAFFS_TRACE_BUFFERS           0x00000400
++#define YAFFS_TRACE_NANDACCESS                0x00000800
++#define YAFFS_TRACE_GC_DETAIL         0x00001000
++#define YAFFS_TRACE_SCAN_DEBUG                0x00002000
++#define YAFFS_TRACE_MTD                       0x00004000
++#define YAFFS_TRACE_CHECKPOINT                0x00008000
++
++#define YAFFS_TRACE_VERIFY            0x00010000
++#define YAFFS_TRACE_VERIFY_NAND               0x00020000
++#define YAFFS_TRACE_VERIFY_FULL               0x00040000
++#define YAFFS_TRACE_VERIFY_ALL                0x000F0000
++
++#define YAFFS_TRACE_SYNC              0x00100000
++#define YAFFS_TRACE_BACKGROUND                0x00200000
++#define YAFFS_TRACE_LOCK              0x00400000
++
++#define YAFFS_TRACE_ERROR             0x40000000
++#define YAFFS_TRACE_BUG                       0x80000000
++#define YAFFS_TRACE_ALWAYS            0xF0000000
++
++
++#define T(mask, p) do { if ((mask) & (yaffs_trace_mask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0)
++
++#endif
+--- /dev/null
++++ b/fs/yaffs2/yaffs_verify.c
+@@ -0,0 +1,626 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++
++#include "yaffs_verify.h"
++#include "yaffs_trace.h"
++#include "yaffs_bitmap.h"
++#include "yaffs_getblockinfo.h"
++#include "yaffs_nand.h"
++
++int yaffs_skip_verification(yaffs_dev_t *dev)
++{
++      dev=dev;
++      return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL));
++}
++
++static int yaffs_skip_full_verification(yaffs_dev_t *dev)
++{
++      dev=dev;
++      return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_FULL));
++}
++
++static int yaffs_skip_nand_verification(yaffs_dev_t *dev)
++{
++      dev=dev;
++      return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_NAND));
++}
++
++
++static const char *block_stateName[] = {
++"Unknown",
++"Needs scanning",
++"Scanning",
++"Empty",
++"Allocating",
++"Full",
++"Dirty",
++"Checkpoint",
++"Collecting",
++"Dead"
++};
++
++
++void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n)
++{
++      int actuallyUsed;
++      int inUse;
++
++      if (yaffs_skip_verification(dev))
++              return;
++
++      /* Report illegal runtime states */
++      if (bi->block_state >= YAFFS_NUMBER_OF_BLOCK_STATES)
++              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->block_state));
++
++      switch (bi->block_state) {
++      case YAFFS_BLOCK_STATE_UNKNOWN:
++      case YAFFS_BLOCK_STATE_SCANNING:
++      case YAFFS_BLOCK_STATE_NEEDS_SCANNING:
++              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR),
++              n, block_stateName[bi->block_state]));
++      }
++
++      /* Check pages in use and soft deletions are legal */
++
++      actuallyUsed = bi->pages_in_use - bi->soft_del_pages;
++
++      if (bi->pages_in_use < 0 || bi->pages_in_use > dev->param.chunks_per_block ||
++         bi->soft_del_pages < 0 || bi->soft_del_pages > dev->param.chunks_per_block ||
++         actuallyUsed < 0 || actuallyUsed > dev->param.chunks_per_block)
++              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pages_in_used %d soft_del_pages %d"TENDSTR),
++              n, bi->pages_in_use, bi->soft_del_pages));
++
++
++      /* Check chunk bitmap legal */
++      inUse = yaffs_count_chunk_bits(dev, n);
++      if (inUse != bi->pages_in_use)
++              T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pages_in_use %d counted chunk bits %d"TENDSTR),
++                      n, bi->pages_in_use, inUse));
++
++}
++
++
++
++void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n)
++{
++      yaffs_verify_blk(dev, bi, n);
++
++      /* After collection the block should be in the erased state */
++
++      if (bi->block_state != YAFFS_BLOCK_STATE_COLLECTING &&
++                      bi->block_state != YAFFS_BLOCK_STATE_EMPTY) {
++              T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
++                      n, bi->block_state));
++      }
++}
++
++void yaffs_verify_blocks(yaffs_dev_t *dev)
++{
++      int i;
++      int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES];
++      int nIllegalBlockStates = 0;
++
++      if (yaffs_skip_verification(dev))
++              return;
++
++      memset(nBlocksPerState, 0, sizeof(nBlocksPerState));
++
++      for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
++              yaffs_block_info_t *bi = yaffs_get_block_info(dev, i);
++              yaffs_verify_blk(dev, bi, i);
++
++              if (bi->block_state < YAFFS_NUMBER_OF_BLOCK_STATES)
++                      nBlocksPerState[bi->block_state]++;
++              else
++                      nIllegalBlockStates++;
++      }
++
++      T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
++      T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR)));
++
++      T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates));
++      if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
++              T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR)));
++
++      for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++)
++              T(YAFFS_TRACE_VERIFY,
++                (TSTR("%s %d blocks"TENDSTR),
++                block_stateName[i], nBlocksPerState[i]));
++
++      if (dev->blocks_in_checkpt != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
++              T(YAFFS_TRACE_VERIFY,
++               (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR),
++               dev->blocks_in_checkpt, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]));
++
++      if (dev->n_erased_blocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
++              T(YAFFS_TRACE_VERIFY,
++               (TSTR("Erased block count wrong dev %d count %d"TENDSTR),
++               dev->n_erased_blocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]));
++
++      if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
++              T(YAFFS_TRACE_VERIFY,
++               (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR),
++               nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING]));
++
++      T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
++
++}
++
++/*
++ * Verify the object header. oh must be valid, but obj and tags may be NULL in which
++ * case those tests will not be performed.
++ */
++void yaffs_verify_oh(yaffs_obj_t *obj, yaffs_obj_header *oh, yaffs_ext_tags *tags, int parentCheck)
++{
++      if (obj && yaffs_skip_verification(obj->my_dev))
++              return;
++
++      if (!(tags && obj && oh)) {
++              T(YAFFS_TRACE_VERIFY,
++                              (TSTR("Verifying object header tags %p obj %p oh %p"TENDSTR),
++                              tags, obj, oh));
++              return;
++      }
++
++      if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
++                      oh->type > YAFFS_OBJECT_TYPE_MAX)
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR),
++                      tags->obj_id, oh->type));
++
++      if (tags->obj_id != obj->obj_id)
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d header mismatch obj_id %d"TENDSTR),
++                      tags->obj_id, obj->obj_id));
++
++
++      /*
++       * Check that the object's parent ids match if parentCheck requested.
++       *
++       * Tests do not apply to the root object.
++       */
++
++      if (parentCheck && tags->obj_id > 1 && !obj->parent)
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d header mismatch parent_id %d obj->parent is NULL"TENDSTR),
++                      tags->obj_id, oh->parent_obj_id));
++
++      if (parentCheck && obj->parent &&
++                      oh->parent_obj_id != obj->parent->obj_id &&
++                      (oh->parent_obj_id != YAFFS_OBJECTID_UNLINKED ||
++                      obj->parent->obj_id != YAFFS_OBJECTID_DELETED))
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d header mismatch parent_id %d parent_obj_id %d"TENDSTR),
++                      tags->obj_id, oh->parent_obj_id, obj->parent->obj_id));
++
++      if (tags->obj_id > 1 && oh->name[0] == 0) /* Null name */
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d header name is NULL"TENDSTR),
++                      obj->obj_id));
++
++      if (tags->obj_id > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d header name is 0xFF"TENDSTR),
++                      obj->obj_id));
++}
++
++
++#if 0
++/* Not being used, but don't want to throw away yet */
++int yaffs_verify_tnode_worker(yaffs_obj_t *obj, yaffs_tnode_t *tn,
++                                      __u32 level, int chunk_offset)
++{
++      int i;
++      yaffs_dev_t *dev = obj->my_dev;
++      int ok = 1;
++
++      if (tn) {
++              if (level > 0) {
++
++                      for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
++                              if (tn->internal[i]) {
++                                      ok = yaffs_verify_tnode_worker(obj,
++                                                      tn->internal[i],
++                                                      level - 1,
++                                                      (chunk_offset<<YAFFS_TNODES_INTERNAL_BITS) + i);
++                              }
++                      }
++              } else if (level == 0) {
++                      yaffs_ext_tags tags;
++                      __u32 obj_id = obj->obj_id;
++
++                      chunk_offset <<=  YAFFS_TNODES_LEVEL0_BITS;
++
++                      for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) {
++                              __u32 theChunk = yaffs_get_group_base(dev, tn, i);
++
++                              if (theChunk > 0) {
++                                      /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.obj_id,tags.chunk_id,theChunk)); */
++                                      yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, &tags);
++                                      if (tags.obj_id != obj_id || tags.chunk_id != chunk_offset) {
++                                              T(~0, (TSTR("Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
++                                                      obj_id, chunk_offset, theChunk,
++                                                      tags.obj_id, tags.chunk_id));
++                                      }
++                              }
++                              chunk_offset++;
++                      }
++              }
++      }
++
++      return ok;
++
++}
++
++#endif
++
++void yaffs_verify_file(yaffs_obj_t *obj)
++{
++      int requiredTallness;
++      int actualTallness;
++      __u32 lastChunk;
++      __u32 x;
++      __u32 i;
++      yaffs_dev_t *dev;
++      yaffs_ext_tags tags;
++      yaffs_tnode_t *tn;
++      __u32 obj_id;
++
++      if (!obj)
++              return;
++
++      if (yaffs_skip_verification(obj->my_dev))
++              return;
++
++      dev = obj->my_dev;
++      obj_id = obj->obj_id;
++
++      /* Check file size is consistent with tnode depth */
++      lastChunk =  obj->variant.file_variant.file_size / dev->data_bytes_per_chunk + 1;
++      x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS;
++      requiredTallness = 0;
++      while (x > 0) {
++              x >>= YAFFS_TNODES_INTERNAL_BITS;
++              requiredTallness++;
++      }
++
++      actualTallness = obj->variant.file_variant.top_level;
++
++      /* Check that the chunks in the tnode tree are all correct.
++       * We do this by scanning through the tnode tree and
++       * checking the tags for every chunk match.
++       */
++
++      if (yaffs_skip_nand_verification(dev))
++              return;
++
++      for (i = 1; i <= lastChunk; i++) {
++              tn = yaffs_find_tnode_0(dev, &obj->variant.file_variant, i);
++
++              if (tn) {
++                      __u32 theChunk = yaffs_get_group_base(dev, tn, i);
++                      if (theChunk > 0) {
++                              /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),obj_id,i,theChunk)); */
++                              yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, &tags);
++                              if (tags.obj_id != obj_id || tags.chunk_id != i) {
++                                      T(~0, (TSTR("Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
++                                              obj_id, i, theChunk,
++                                              tags.obj_id, tags.chunk_id));
++                              }
++                      }
++              }
++      }
++}
++
++
++void yaffs_verify_link(yaffs_obj_t *obj)
++{
++      if (obj && yaffs_skip_verification(obj->my_dev))
++              return;
++
++      /* Verify sane equivalent object */
++}
++
++void yaffs_verify_symlink(yaffs_obj_t *obj)
++{
++      if (obj && yaffs_skip_verification(obj->my_dev))
++              return;
++
++      /* Verify symlink string */
++}
++
++void yaffs_verify_special(yaffs_obj_t *obj)
++{
++      if (obj && yaffs_skip_verification(obj->my_dev))
++              return;
++}
++
++void yaffs_verify_obj(yaffs_obj_t *obj)
++{
++      yaffs_dev_t *dev;
++
++      __u32 chunkMin;
++      __u32 chunkMax;
++
++      __u32 chunk_idOk;
++      __u32 chunkInRange;
++      __u32 chunkShouldNotBeDeleted;
++      __u32 chunkValid;
++
++      if (!obj)
++              return;
++
++      if (obj->being_created)
++              return;
++
++      dev = obj->my_dev;
++
++      if (yaffs_skip_verification(dev))
++              return;
++
++      /* Check sane object header chunk */
++
++      chunkMin = dev->internal_start_block * dev->param.chunks_per_block;
++      chunkMax = (dev->internal_end_block+1) * dev->param.chunks_per_block - 1;
++
++      chunkInRange = (((unsigned)(obj->hdr_chunk)) >= chunkMin && ((unsigned)(obj->hdr_chunk)) <= chunkMax);
++      chunk_idOk = chunkInRange || (obj->hdr_chunk == 0);
++      chunkValid = chunkInRange &&
++                      yaffs_check_chunk_bit(dev,
++                                      obj->hdr_chunk / dev->param.chunks_per_block,
++                                      obj->hdr_chunk % dev->param.chunks_per_block);
++      chunkShouldNotBeDeleted = chunkInRange && !chunkValid;
++
++      if (!obj->fake &&
++                      (!chunk_idOk || chunkShouldNotBeDeleted)) {
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d has chunk_id %d %s %s"TENDSTR),
++                      obj->obj_id, obj->hdr_chunk,
++                      chunk_idOk ? "" : ",out of range",
++                      chunkShouldNotBeDeleted ? ",marked as deleted" : ""));
++      }
++
++      if (chunkValid && !yaffs_skip_nand_verification(dev)) {
++              yaffs_ext_tags tags;
++              yaffs_obj_header *oh;
++              __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__);
++
++              oh = (yaffs_obj_header *)buffer;
++
++              yaffs_rd_chunk_tags_nand(dev, obj->hdr_chunk, buffer,
++                              &tags);
++
++              yaffs_verify_oh(obj, oh, &tags, 1);
++
++              yaffs_release_temp_buffer(dev, buffer, __LINE__);
++      }
++
++      /* Verify it has a parent */
++      if (obj && !obj->fake &&
++                      (!obj->parent || obj->parent->my_dev != dev)) {
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
++                      obj->obj_id, obj->parent));
++      }
++
++      /* Verify parent is a directory */
++      if (obj->parent && obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
++              T(YAFFS_TRACE_VERIFY,
++                      (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
++                      obj->obj_id, obj->parent->variant_type));
++      }
++
++      switch (obj->variant_type) {
++      case YAFFS_OBJECT_TYPE_FILE:
++              yaffs_verify_file(obj);
++              break;
++      case YAFFS_OBJECT_TYPE_SYMLINK:
++              yaffs_verify_symlink(obj);
++              break;
++      case YAFFS_OBJECT_TYPE_DIRECTORY:
++              yaffs_verify_dir(obj);
++              break;
++      case YAFFS_OBJECT_TYPE_HARDLINK:
++              yaffs_verify_link(obj);
++              break;
++      case YAFFS_OBJECT_TYPE_SPECIAL:
++              yaffs_verify_special(obj);
++              break;
++      case YAFFS_OBJECT_TYPE_UNKNOWN:
++      default:
++              T(YAFFS_TRACE_VERIFY,
++              (TSTR("Obj %d has illegaltype %d"TENDSTR),
++              obj->obj_id, obj->variant_type));
++              break;
++      }
++}
++
++void yaffs_verify_objects(yaffs_dev_t *dev)
++{
++      yaffs_obj_t *obj;
++      int i;
++      struct ylist_head *lh;
++
++      if (yaffs_skip_verification(dev))
++              return;
++
++      /* Iterate through the objects in each hash entry */
++
++      for (i = 0; i <  YAFFS_NOBJECT_BUCKETS; i++) {
++              ylist_for_each(lh, &dev->obj_bucket[i].list) {
++                      if (lh) {
++                              obj = ylist_entry(lh, yaffs_obj_t, hash_link);
++                              yaffs_verify_obj(obj);
++                      }
++              }
++      }
++}
++
++
++void yaffs_verify_obj_in_dir(yaffs_obj_t *obj)
++{
++      struct ylist_head *lh;
++      yaffs_obj_t *listObj;
++
++      int count = 0;
++
++      if (!obj) {
++              T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR)));
++              YBUG();
++              return;
++      }
++
++      if (yaffs_skip_verification(obj->my_dev))
++              return;
++
++      if (!obj->parent) {
++              T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR)));
++              YBUG();
++              return;
++      }
++
++      if (obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
++              T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR)));
++              YBUG();
++      }
++
++      /* Iterate through the objects in each hash entry */
++
++      ylist_for_each(lh, &obj->parent->variant.dir_variant.children) {
++              if (lh) {
++                      listObj = ylist_entry(lh, yaffs_obj_t, siblings);
++                      yaffs_verify_obj(listObj);
++                      if (obj == listObj)
++                              count++;
++              }
++       }
++
++      if (count != 1) {
++              T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count));
++              YBUG();
++      }
++}
++
++void yaffs_verify_dir(yaffs_obj_t *directory)
++{
++      struct ylist_head *lh;
++      yaffs_obj_t *listObj;
++
++      if (!directory) {
++              YBUG();
++              return;
++      }
++
++      if (yaffs_skip_full_verification(directory->my_dev))
++              return;
++
++      if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
++              T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variant_type));
++              YBUG();
++      }
++
++      /* Iterate through the objects in each hash entry */
++
++      ylist_for_each(lh, &directory->variant.dir_variant.children) {
++              if (lh) {
++                      listObj = ylist_entry(lh, yaffs_obj_t, siblings);
++                      if (listObj->parent != directory) {
++                              T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent));
++                              YBUG();
++                      }
++                      yaffs_verify_obj_in_dir(listObj);
++              }
++      }
++}
++
++static int yaffs_free_verification_failures;
++
++void yaffs_verify_free_chunks(yaffs_dev_t *dev)
++{
++      int counted;
++      int difference;
++
++      if (yaffs_skip_verification(dev))
++              return;
++
++      counted = yaffs_count_free_chunks(dev);
++
++      difference = dev->n_free_chunks - counted;
++
++      if (difference) {
++              T(YAFFS_TRACE_ALWAYS,
++                (TSTR("Freechunks verification failure %d %d %d" TENDSTR),
++                 dev->n_free_chunks, counted, difference));
++              yaffs_free_verification_failures++;
++      }
++}
++
++int yaffs_verify_file_sane(yaffs_obj_t *in)
++{
++#if 0
++      int chunk;
++      int n_chunks;
++      int fSize;
++      int failed = 0;
++      int obj_id;
++      yaffs_tnode_t *tn;
++      yaffs_tags_t localTags;
++      yaffs_tags_t *tags = &localTags;
++      int theChunk;
++      int is_deleted;
++
++      if (in->variant_type != YAFFS_OBJECT_TYPE_FILE)
++              return YAFFS_FAIL;
++
++      obj_id = in->obj_id;
++      fSize = in->variant.file_variant.file_size;
++      n_chunks =
++          (fSize + in->my_dev->data_bytes_per_chunk - 1) / in->my_dev->data_bytes_per_chunk;
++
++      for (chunk = 1; chunk <= n_chunks; chunk++) {
++              tn = yaffs_find_tnode_0(in->my_dev, &in->variant.file_variant,
++                                         chunk);
++
++              if (tn) {
++
++                      theChunk = yaffs_get_group_base(dev, tn, chunk);
++
++                      if (yaffs_check_chunk_bits
++                          (dev, theChunk / dev->param.chunks_per_block,
++                           theChunk % dev->param.chunks_per_block)) {
++
++                              yaffs_rd_chunk_tags_nand(in->my_dev, theChunk,
++                                                          tags,
++                                                          &is_deleted);
++                              if (yaffs_tags_match
++                                  (tags, in->obj_id, chunk, is_deleted)) {
++                                      /* found it; */
++
++                              }
++                      } else {
++
++                              failed = 1;
++                      }
++
++              } else {
++                      /* T(("No level 0 found for %d\n", chunk)); */
++              }
++      }
++
++      return failed ? YAFFS_FAIL : YAFFS_OK;
++#else
++      in=in;
++      return YAFFS_OK;
++#endif
++}
+--- /dev/null
++++ b/fs/yaffs2/yaffs_verify.h
+@@ -0,0 +1,39 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#ifndef __YAFFS_VERIFY_H__
++#define __YAFFS_VERIFY_H__
++
++#include "yaffs_guts.h"
++
++void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n);
++void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n);
++void yaffs_verify_blocks(yaffs_dev_t *dev);
++
++void yaffs_verify_oh(yaffs_obj_t *obj, yaffs_obj_header *oh, yaffs_ext_tags *tags, int parentCheck);
++void yaffs_verify_file(yaffs_obj_t *obj);
++void yaffs_verify_link(yaffs_obj_t *obj);
++void yaffs_verify_symlink(yaffs_obj_t *obj);
++void yaffs_verify_special(yaffs_obj_t *obj);
++void yaffs_verify_obj(yaffs_obj_t *obj);
++void yaffs_verify_objects(yaffs_dev_t *dev);
++void yaffs_verify_obj_in_dir(yaffs_obj_t *obj);
++void yaffs_verify_dir(yaffs_obj_t *directory);
++void yaffs_verify_free_chunks(yaffs_dev_t *dev);
++
++int yaffs_verify_file_sane(yaffs_obj_t *obj);
++
++int yaffs_skip_verification(yaffs_dev_t *dev);
++
++#endif
++
+--- /dev/null
++++ b/fs/yaffs2/yaffs_vfs_glue.c
+@@ -0,0 +1,3576 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ * Acknowledgements:
++ * Luc van OostenRyck for numerous patches.
++ * Nick Bane for numerous patches.
++ * Nick Bane for 2.5/2.6 integration.
++ * Andras Toth for mknod rdev issue.
++ * Michael Fischer for finding the problem with inode inconsistency.
++ * Some code bodily lifted from JFFS
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/*
++ *
++ * This is the file system front-end to YAFFS that hooks it up to
++ * the VFS.
++ *
++ * Special notes:
++ * >> 2.4: sb->u.generic_sbp points to the yaffs_dev_t associated with
++ *         this superblock
++ * >> 2.6: sb->s_fs_info  points to the yaffs_dev_t associated with this
++ *         superblock
++ * >> inode->u.generic_ip points to the associated yaffs_obj_t.
++ */
++
++/*
++ * There are two variants of the VFS glue code. This variant should compile
++ * for any version of Linux.
++ */
++#include <linux/version.h>
++
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10))
++#define YAFFS_COMPILE_BACKGROUND
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6, 23))
++#define YAFFS_COMPILE_FREEZER
++#endif
++#endif
++
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
++#define YAFFS_COMPILE_EXPORTFS
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35))
++#define YAFFS_USE_SETATTR_COPY
++#define YAFFS_USE_TRUNCATE_SETSIZE
++#endif
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35))
++#define YAFFS_HAS_EVICT_INODE
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
++#define YAFFS_NEW_FOLLOW_LINK 1
++#else
++#define YAFFS_NEW_FOLLOW_LINK 0
++#endif
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
++#include <linux/config.h>
++#endif
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/slab.h>
++#include <linux/init.h>
++#include <linux/fs.h>
++#include <linux/proc_fs.h>
++#include <linux/smp_lock.h>
++#include <linux/pagemap.h>
++#include <linux/mtd/mtd.h>
++#include <linux/interrupt.h>
++#include <linux/string.h>
++#include <linux/ctype.h>
++
++#if (YAFFS_NEW_FOLLOW_LINK == 1)
++#include <linux/namei.h>
++#endif
++
++#ifdef YAFFS_COMPILE_EXPORTFS
++#include <linux/exportfs.h>
++#endif
++
++#ifdef YAFFS_COMPILE_BACKGROUND
++#include <linux/kthread.h>
++#include <linux/delay.h>
++#endif
++#ifdef YAFFS_COMPILE_FREEZER
++#include <linux/freezer.h>
++#endif
++
++#include <asm/div64.h>
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++
++#include <linux/statfs.h>
++
++#define UnlockPage(p) unlock_page(p)
++#define Page_Uptodate(page)   test_bit(PG_uptodate, &(page)->flags)
++
++/* FIXME: use sb->s_id instead ? */
++#define yaffs_devname(sb, buf)        bdevname(sb->s_bdev, buf)
++
++#else
++
++#include <linux/locks.h>
++#define       BDEVNAME_SIZE           0
++#define       yaffs_devname(sb, buf)  kdevname(sb->s_dev)
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0))
++/* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */
++#define __user
++#endif
++
++#endif
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26))
++#define YPROC_ROOT  (&proc_root)
++#else
++#define YPROC_ROOT  NULL
++#endif
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26))
++#define Y_INIT_TIMER(a)       init_timer(a)
++#else
++#define Y_INIT_TIMER(a)       init_timer_on_stack(a)
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++#define WRITE_SIZE_STR "writesize"
++#define WRITE_SIZE(mtd) ((mtd)->writesize)
++#else
++#define WRITE_SIZE_STR "oobblock"
++#define WRITE_SIZE(mtd) ((mtd)->oobblock)
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27))
++#define YAFFS_USE_WRITE_BEGIN_END 1
++#else
++#define YAFFS_USE_WRITE_BEGIN_END 0
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28))
++static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size)
++{
++      uint64_t result = partition_size;
++      do_div(result, block_size);
++      return (uint32_t)result;
++}
++#else
++#define YCALCBLOCKS(s, b) ((s)/(b))
++#endif
++
++#include <linux/uaccess.h>
++#include <linux/mtd/mtd.h>
++
++#include "yportenv.h"
++#include "yaffs_trace.h"
++#include "yaffs_guts.h"
++
++#include "yaffs_linux.h"
++
++#include "yaffs_mtdif.h"
++#include "yaffs_mtdif1.h"
++#include "yaffs_mtdif2.h"
++
++unsigned int yaffs_trace_mask = YAFFS_TRACE_BAD_BLOCKS | YAFFS_TRACE_ALWAYS;
++unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS;
++unsigned int yaffs_auto_checkpoint = 1;
++unsigned int yaffs_gc_control = 1;
++unsigned int yaffs_bg_enable = 1;
++
++/* Module Parameters */
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++module_param(yaffs_trace_mask, uint, 0644);
++module_param(yaffs_wr_attempts, uint, 0644);
++module_param(yaffs_auto_checkpoint, uint, 0644);
++module_param(yaffs_gc_control, uint, 0644);
++module_param(yaffs_bg_enable, uint, 0644);
++#else
++MODULE_PARM(yaffs_trace_mask, "i");
++MODULE_PARM(yaffs_wr_attempts, "i");
++MODULE_PARM(yaffs_auto_checkpoint, "i");
++MODULE_PARM(yaffs_gc_control, "i");
++#endif
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25))
++/* use iget and read_inode */
++#define Y_IGET(sb, inum) iget((sb), (inum))
++static void yaffs_read_inode(struct inode *inode);
++
++#else
++/* Call local equivalent */
++#define YAFFS_USE_OWN_IGET
++#define Y_IGET(sb, inum) yaffs_iget((sb), (inum))
++
++static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino);
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18))
++#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private)
++#else
++#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip)
++#endif
++
++#define yaffs_InodeToObject(iptr) ((yaffs_obj_t *)(yaffs_InodeToObjectLV(iptr)))
++#define yaffs_dentry_to_obj(dptr) yaffs_InodeToObject((dptr)->d_inode)
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++#define yaffs_SuperToDevice(sb)       ((yaffs_dev_t *)sb->s_fs_info)
++#else
++#define yaffs_SuperToDevice(sb)       ((yaffs_dev_t *)sb->u.generic_sbp)
++#endif
++
++
++#define update_dir_time(dir) do {\
++                      (dir)->i_ctime = (dir)->i_mtime = CURRENT_TIME; \
++              } while(0)
++              
++static void yaffs_put_super(struct super_block *sb);
++
++static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
++                              loff_t *pos);
++static ssize_t yaffs_hold_space(struct file *f);
++static void yaffs_release_space(struct file *f);
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++static int yaffs_file_flush(struct file *file, fl_owner_t id);
++#else
++static int yaffs_file_flush(struct file *file);
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
++static int yaffs_sync_object(struct file *file, int datasync);
++#else
++static int yaffs_sync_object(struct file *file, struct dentry *dentry,
++                              int datasync);
++#endif
++
++static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir);
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
++                      struct nameidata *n);
++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
++                                      struct nameidata *n);
++#else
++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode);
++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry);
++#endif
++static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
++                      struct dentry *dentry);
++static int yaffs_unlink(struct inode *dir, struct dentry *dentry);
++static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
++                      const char *symname);
++static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode);
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
++                      dev_t dev);
++#else
++static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
++                      int dev);
++#endif
++static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
++                      struct inode *new_dir, struct dentry *new_dentry);
++static int yaffs_setattr(struct dentry *dentry, struct iattr *attr);
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++static int yaffs_sync_fs(struct super_block *sb, int wait);
++static void yaffs_write_super(struct super_block *sb);
++#else
++static int yaffs_sync_fs(struct super_block *sb);
++static int yaffs_write_super(struct super_block *sb);
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf);
++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf);
++#else
++static int yaffs_statfs(struct super_block *sb, struct statfs *buf);
++#endif
++
++#ifdef YAFFS_HAS_PUT_INODE
++static void yaffs_put_inode(struct inode *inode);
++#endif
++
++#ifdef YAFFS_HAS_EVICT_INODE
++static void yaffs_evict_inode(struct inode *);
++#else
++static void yaffs_delete_inode(struct inode *);
++static void yaffs_clear_inode(struct inode *);
++#endif
++
++static int yaffs_readpage(struct file *file, struct page *page);
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++static int yaffs_writepage(struct page *page, struct writeback_control *wbc);
++#else
++static int yaffs_writepage(struct page *page);
++#endif
++
++#ifdef CONFIG_YAFFS_XATTR
++int yaffs_setxattr(struct dentry *dentry, const char *name,
++                      const void *value, size_t size, int flags);
++ssize_t yaffs_getxattr(struct dentry *dentry, const char *name, void *buff,
++                      size_t size);
++int yaffs_removexattr(struct dentry *dentry, const char *name);
++ssize_t yaffs_listxattr(struct dentry *dentry, char *buff, size_t size);
++#endif
++
++
++#if (YAFFS_USE_WRITE_BEGIN_END != 0)
++static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
++                              loff_t pos, unsigned len, unsigned flags,
++                              struct page **pagep, void **fsdata);
++static int yaffs_write_end(struct file *filp, struct address_space *mapping,
++                              loff_t pos, unsigned len, unsigned copied,
++                              struct page *pg, void *fsdadata);
++#else
++static int yaffs_prepare_write(struct file *f, struct page *pg,
++                              unsigned offset, unsigned to);
++static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
++                              unsigned to);
++
++#endif
++
++static int yaffs_readlink(struct dentry *dentry, char __user *buffer,
++                              int buflen);
++#if (YAFFS_NEW_FOLLOW_LINK == 1)
++void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias);
++static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
++#else
++static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
++#endif
++
++static void yaffs_touch_super(yaffs_dev_t *dev);
++
++static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin);
++
++static int yaffs_vfs_setattr(struct inode *, struct iattr *);
++
++
++static struct address_space_operations yaffs_file_address_operations = {
++      .readpage = yaffs_readpage,
++      .writepage = yaffs_writepage,
++#if (YAFFS_USE_WRITE_BEGIN_END > 0)
++      .write_begin = yaffs_write_begin,
++      .write_end = yaffs_write_end,
++#else
++      .prepare_write = yaffs_prepare_write,
++      .commit_write = yaffs_commit_write,
++#endif
++};
++
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22))
++static const struct file_operations yaffs_file_operations = {
++      .read = do_sync_read,
++      .write = do_sync_write,
++      .aio_read = generic_file_aio_read,
++      .aio_write = generic_file_aio_write,
++      .mmap = generic_file_mmap,
++      .flush = yaffs_file_flush,
++      .fsync = yaffs_sync_object,
++      .splice_read = generic_file_splice_read,
++      .splice_write = generic_file_splice_write,
++      .llseek = generic_file_llseek,
++};
++
++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18))
++
++static const struct file_operations yaffs_file_operations = {
++      .read = do_sync_read,
++      .write = do_sync_write,
++      .aio_read = generic_file_aio_read,
++      .aio_write = generic_file_aio_write,
++      .mmap = generic_file_mmap,
++      .flush = yaffs_file_flush,
++      .fsync = yaffs_sync_object,
++      .sendfile = generic_file_sendfile,
++};
++
++#else
++
++static const struct file_operations yaffs_file_operations = {
++      .read = generic_file_read,
++      .write = generic_file_write,
++      .mmap = generic_file_mmap,
++      .flush = yaffs_file_flush,
++      .fsync = yaffs_sync_object,
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++      .sendfile = generic_file_sendfile,
++#endif
++};
++#endif
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25))
++static void zero_user_segment(struct page *page, unsigned start, unsigned end)
++{
++      void * kaddr = kmap_atomic(page, KM_USER0);
++      memset(kaddr + start, 0, end - start);
++      kunmap_atomic(kaddr, KM_USER0);
++      flush_dcache_page(page);
++}
++#endif
++
++
++static const struct inode_operations yaffs_file_inode_operations = {
++      .setattr = yaffs_setattr,
++#ifdef CONFIG_YAFFS_XATTR
++      .setxattr = yaffs_setxattr,
++      .getxattr = yaffs_getxattr,
++      .listxattr = yaffs_listxattr,
++      .removexattr = yaffs_removexattr,
++#endif
++};
++
++static const struct inode_operations yaffs_symlink_inode_operations = {
++      .readlink = yaffs_readlink,
++      .follow_link = yaffs_follow_link,
++#if (YAFFS_NEW_FOLLOW_LINK == 1)
++      .put_link = yaffs_put_link,
++#endif
++      .setattr = yaffs_setattr,
++#ifdef CONFIG_YAFFS_XATTR
++      .setxattr = yaffs_setxattr,
++      .getxattr = yaffs_getxattr,
++      .listxattr = yaffs_listxattr,
++      .removexattr = yaffs_removexattr,
++#endif
++};
++
++static const struct inode_operations yaffs_dir_inode_operations = {
++      .create = yaffs_create,
++      .lookup = yaffs_lookup,
++      .link = yaffs_link,
++      .unlink = yaffs_unlink,
++      .symlink = yaffs_symlink,
++      .mkdir = yaffs_mkdir,
++      .rmdir = yaffs_unlink,
++      .mknod = yaffs_mknod,
++      .rename = yaffs_rename,
++      .setattr = yaffs_setattr,
++#ifdef CONFIG_YAFFS_XATTR
++      .setxattr = yaffs_setxattr,
++      .getxattr = yaffs_getxattr,
++      .listxattr = yaffs_listxattr,
++      .removexattr = yaffs_removexattr,
++#endif
++};
++
++static const struct file_operations yaffs_dir_operations = {
++      .read = generic_read_dir,
++      .readdir = yaffs_readdir,
++      .fsync = yaffs_sync_object,
++      .llseek = yaffs_dir_llseek,
++};
++
++static const struct super_operations yaffs_super_ops = {
++      .statfs = yaffs_statfs,
++
++#ifndef YAFFS_USE_OWN_IGET
++      .read_inode = yaffs_read_inode,
++#endif
++#ifdef YAFFS_HAS_PUT_INODE
++      .put_inode = yaffs_put_inode,
++#endif
++      .put_super = yaffs_put_super,
++#ifdef YAFFS_HAS_EVICT_INODE
++      .evict_inode = yaffs_evict_inode,
++#else
++      .delete_inode = yaffs_delete_inode,
++      .clear_inode = yaffs_clear_inode,
++#endif
++      .sync_fs = yaffs_sync_fs,
++      .write_super = yaffs_write_super,
++};
++
++
++static  int yaffs_vfs_setattr(struct inode *inode, struct iattr *attr)
++{
++#ifdef  YAFFS_USE_SETATTR_COPY
++      setattr_copy(inode,attr);
++      return 0;
++#else
++      return inode_setattr(inode, attr);
++#endif
++
++}
++
++static  int yaffs_vfs_setsize(struct inode *inode, loff_t newsize)
++{
++#ifdef  YAFFS_USE_TRUNCATE_SETSIZE
++      truncate_setsize(inode,newsize);
++      return 0;
++#else
++      truncate_inode_pages(&inode->i_data,newsize);
++      return 0;
++#endif
++
++}
++
++static unsigned yaffs_gc_control_callback(yaffs_dev_t *dev)
++{
++      return yaffs_gc_control;
++}
++                                                                                                                      
++static void yaffs_gross_lock(yaffs_dev_t *dev)
++{
++      T(YAFFS_TRACE_LOCK, (TSTR("yaffs locking %p\n"), current));
++      down(&(yaffs_dev_to_lc(dev)->grossLock));
++      T(YAFFS_TRACE_LOCK, (TSTR("yaffs locked %p\n"), current));
++}
++
++static void yaffs_gross_unlock(yaffs_dev_t *dev)
++{
++      T(YAFFS_TRACE_LOCK, (TSTR("yaffs unlocking %p\n"), current));
++      up(&(yaffs_dev_to_lc(dev)->grossLock));
++}
++
++#ifdef YAFFS_COMPILE_EXPORTFS
++
++static struct inode *
++yaffs2_nfs_get_inode(struct super_block *sb, uint64_t ino, uint32_t generation)
++{
++      return Y_IGET(sb, ino);
++}
++
++static struct dentry *
++yaffs2_fh_to_dentry(struct super_block *sb, struct fid *fid, int fh_len, int fh_type)
++{
++      return generic_fh_to_dentry(sb, fid, fh_len, fh_type, yaffs2_nfs_get_inode) ;
++}
++
++static struct dentry *
++ yaffs2_fh_to_parent(struct super_block *sb, struct fid *fid, int fh_len, int fh_type)
++{
++      return generic_fh_to_parent(sb, fid, fh_len, fh_type, yaffs2_nfs_get_inode);
++}
++
++struct dentry *yaffs2_get_parent(struct dentry *dentry)
++{
++
++      struct super_block *sb = dentry->d_inode->i_sb;
++      struct dentry *parent = ERR_PTR(-ENOENT);
++      struct inode *inode;
++      unsigned long parent_ino;
++      yaffs_obj_t *d_obj;
++      yaffs_obj_t *parent_obj;
++
++      d_obj = yaffs_InodeToObject(dentry->d_inode);
++
++      if (d_obj) {
++              parent_obj = d_obj->parent;
++              if (parent_obj) {
++                      parent_ino = yaffs_get_obj_inode(parent_obj);
++                      inode = Y_IGET(sb, parent_ino);
++
++                      if (IS_ERR(inode)) {
++                              parent = ERR_CAST(inode);
++                      } else {
++                              parent = d_obtain_alias(inode);
++                              if (!IS_ERR(parent)) {
++                                      parent = ERR_PTR(-ENOMEM);
++                                      iput(inode);
++                              }
++                      }
++              }
++      }
++
++      return parent;
++}
++
++/* Just declare a zero structure as a NULL value implies
++ * using the default functions of exportfs.
++ */
++
++static struct export_operations yaffs_export_ops =
++{
++      .fh_to_dentry = yaffs2_fh_to_dentry,
++      .fh_to_parent = yaffs2_fh_to_parent,
++      .get_parent = yaffs2_get_parent,
++} ;
++
++#endif
++
++/*-----------------------------------------------------------------*/
++/* Directory search context allows us to unlock access to yaffs during
++ * filldir without causing problems with the directory being modified.
++ * This is similar to the tried and tested mechanism used in yaffs direct.
++ *
++ * A search context iterates along a doubly linked list of siblings in the
++ * directory. If the iterating object is deleted then this would corrupt
++ * the list iteration, likely causing a crash. The search context avoids
++ * this by using the remove_obj_fn to move the search context to the
++ * next object before the object is deleted.
++ *
++ * Many readdirs (and thus seach conexts) may be alive simulateously so
++ * each yaffs_dev_t has a list of these.
++ *
++ * A seach context lives for the duration of a readdir.
++ *
++ * All these functions must be called while yaffs is locked.
++ */
++
++struct yaffs_SearchContext {
++      yaffs_dev_t *dev;
++      yaffs_obj_t *dirObj;
++      yaffs_obj_t *nextReturn;
++      struct ylist_head others;
++};
++
++/*
++ * yaffs_NewSearch() creates a new search context, initialises it and
++ * adds it to the device's search context list.
++ *
++ * Called at start of readdir.
++ */
++static struct yaffs_SearchContext * yaffs_NewSearch(yaffs_obj_t *dir)
++{
++      yaffs_dev_t *dev = dir->my_dev;
++      struct yaffs_SearchContext *sc = YMALLOC(sizeof(struct yaffs_SearchContext));
++      if(sc){
++              sc->dirObj = dir;
++              sc->dev = dev;
++              if( ylist_empty(&sc->dirObj->variant.dir_variant.children))
++                      sc->nextReturn = NULL;
++              else
++                      sc->nextReturn = ylist_entry(
++                                dir->variant.dir_variant.children.next,
++                              yaffs_obj_t,siblings);
++              YINIT_LIST_HEAD(&sc->others);
++              ylist_add(&sc->others,&(yaffs_dev_to_lc(dev)->searchContexts));
++      }
++      return sc;
++}
++
++/*
++ * yaffs_search_end() disposes of a search context and cleans up.
++ */
++static void yaffs_search_end(struct yaffs_SearchContext * sc)
++{
++      if(sc){
++              ylist_del(&sc->others);
++              YFREE(sc);
++      }
++}
++
++/*
++ * yaffs_search_advance() moves a search context to the next object.
++ * Called when the search iterates or when an object removal causes
++ * the search context to be moved to the next object.
++ */
++static void yaffs_search_advance(struct yaffs_SearchContext *sc)
++{
++        if(!sc)
++                return;
++
++        if( sc->nextReturn == NULL ||
++                ylist_empty(&sc->dirObj->variant.dir_variant.children))
++                sc->nextReturn = NULL;
++        else {
++                struct ylist_head *next = sc->nextReturn->siblings.next;
++
++                if( next == &sc->dirObj->variant.dir_variant.children)
++                        sc->nextReturn = NULL; /* end of list */
++                else
++                        sc->nextReturn = ylist_entry(next,yaffs_obj_t,siblings);
++        }
++}
++
++/*
++ * yaffs_remove_obj_callback() is called when an object is unlinked.
++ * We check open search contexts and advance any which are currently
++ * on the object being iterated.
++ */
++static void yaffs_remove_obj_callback(yaffs_obj_t *obj)
++{
++
++        struct ylist_head *i;
++        struct yaffs_SearchContext *sc;
++        struct ylist_head *search_contexts = &(yaffs_dev_to_lc(obj->my_dev)->searchContexts);
++
++
++        /* Iterate through the directory search contexts.
++         * If any are currently on the object being removed, then advance
++         * the search context to the next object to prevent a hanging pointer.
++         */
++         ylist_for_each(i, search_contexts) {
++                if (i) {
++                        sc = ylist_entry(i, struct yaffs_SearchContext,others);
++                        if(sc->nextReturn == obj)
++                                yaffs_search_advance(sc);
++                }
++      }
++
++}
++
++
++/*-----------------------------------------------------------------*/
++
++static int yaffs_readlink(struct dentry *dentry, char __user *buffer,
++                      int buflen)
++{
++      unsigned char *alias;
++      int ret;
++
++      yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev;
++
++      yaffs_gross_lock(dev);
++
++      alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry));
++
++      yaffs_gross_unlock(dev);
++
++      if (!alias)
++              return -ENOMEM;
++
++      ret = vfs_readlink(dentry, buffer, buflen, alias);
++      kfree(alias);
++      return ret;
++}
++
++#if (YAFFS_NEW_FOLLOW_LINK == 1)
++static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
++#else
++static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
++#endif
++{
++      unsigned char *alias;
++      int ret;
++      yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev;
++
++      yaffs_gross_lock(dev);
++
++      alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry));
++      yaffs_gross_unlock(dev);
++
++      if (!alias) {
++              ret = -ENOMEM;
++              goto out;
++      }
++
++#if (YAFFS_NEW_FOLLOW_LINK == 1)
++      nd_set_link(nd, alias);
++      ret = (int)alias;
++out:
++      return ERR_PTR(ret);
++#else
++      ret = vfs_follow_link(nd, alias);
++      kfree(alias);
++out:
++      return ret;
++#endif
++}
++
++#if (YAFFS_NEW_FOLLOW_LINK == 1)
++void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias) {
++      kfree(alias);
++}
++#endif
++
++struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
++                              yaffs_obj_t *obj);
++
++/*
++ * Lookup is used to find objects in the fs
++ */
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++
++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
++                              struct nameidata *n)
++#else
++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry)
++#endif
++{
++      yaffs_obj_t *obj;
++      struct inode *inode = NULL;     /* NCB 2.5/2.6 needs NULL here */
++
++      yaffs_dev_t *dev = yaffs_InodeToObject(dir)->my_dev;
++
++      if(current != yaffs_dev_to_lc(dev)->readdirProcess)
++              yaffs_gross_lock(dev);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_lookup for %d:%s\n"),
++              yaffs_InodeToObject(dir)->obj_id, dentry->d_name.name));
++
++      obj = yaffs_find_by_name(yaffs_InodeToObject(dir),
++                                      dentry->d_name.name);
++
++      obj = yaffs_get_equivalent_obj(obj);    /* in case it was a hardlink */
++
++      /* Can't hold gross lock when calling yaffs_get_inode() */
++      if(current != yaffs_dev_to_lc(dev)->readdirProcess)
++              yaffs_gross_unlock(dev);
++
++      if (obj) {
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_lookup found %d\n"), obj->obj_id));
++
++              inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
++
++              if (inode) {
++                      T(YAFFS_TRACE_OS,
++                              (TSTR("yaffs_loookup dentry \n")));
++/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to
++ * d_add even if NULL inode */
++#if 0
++                      /*dget(dentry); // try to solve directory bug */
++                      d_add(dentry, inode);
++
++                      /* return dentry; */
++                      return NULL;
++#endif
++              }
++
++      } else {
++              T(YAFFS_TRACE_OS,(TSTR("yaffs_lookup not found\n")));
++
++      }
++
++/* added NCB for 2.5/6 compatability - forces add even if inode is
++ * NULL which creates dentry hash */
++      d_add(dentry, inode);
++
++      return NULL;
++}
++
++
++#ifdef YAFFS_HAS_PUT_INODE
++
++/* For now put inode is just for debugging
++ * Put inode is called when the inode **structure** is put.
++ */
++static void yaffs_put_inode(struct inode *inode)
++{
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_put_inode: ino %d, count %d\n"), (int)inode->i_ino,
++              atomic_read(&inode->i_count)));
++
++}
++#endif
++
++
++static void yaffs_unstitch_obj(struct inode *inode, yaffs_obj_t *obj)
++{
++      /* Clear the association between the inode and
++       * the yaffs_obj_t.
++       */
++      obj->my_inode = NULL;
++      yaffs_InodeToObjectLV(inode) = NULL;
++
++      /* If the object freeing was deferred, then the real
++       * free happens now.
++       * This should fix the inode inconsistency problem.
++       */
++      yaffs_handle_defered_free(obj);
++}
++
++#ifdef YAFFS_HAS_EVICT_INODE
++/* yaffs_evict_inode combines into one operation what was previously done in
++ * yaffs_clear_inode() and yaffs_delete_inode()
++ *
++ */
++static void yaffs_evict_inode( struct inode *inode)
++{
++      yaffs_obj_t *obj;
++      yaffs_dev_t *dev;
++      int deleteme = 0;
++
++      obj = yaffs_InodeToObject(inode);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_evict_inode: ino %d, count %d %s\n"), (int)inode->i_ino,
++              atomic_read(&inode->i_count),
++              obj ? "object exists" : "null object"));
++
++      if (!inode->i_nlink && !is_bad_inode(inode))
++              deleteme = 1;
++      truncate_inode_pages(&inode->i_data,0);
++      end_writeback(inode);
++
++      if(deleteme && obj){
++              dev = obj->my_dev;
++              yaffs_gross_lock(dev);
++              yaffs_del_obj(obj);
++              yaffs_gross_unlock(dev);
++      }
++      if (obj) {
++              dev = obj->my_dev;
++              yaffs_gross_lock(dev);
++              yaffs_unstitch_obj(inode,obj);
++              yaffs_gross_unlock(dev);
++      }
++
++
++}
++#else
++
++/* clear is called to tell the fs to release any per-inode data it holds.
++ * The object might still exist on disk and is just being thrown out of the cache
++ * or else the object has actually been deleted and we're being called via
++ * the chain
++ *   yaffs_delete_inode() -> clear_inode()->yaffs_clear_inode()
++ */
++
++static void yaffs_clear_inode(struct inode *inode)
++{
++      yaffs_obj_t *obj;
++      yaffs_dev_t *dev;
++
++      obj = yaffs_InodeToObject(inode);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_clear_inode: ino %d, count %d %s\n"), (int)inode->i_ino,
++              atomic_read(&inode->i_count),
++              obj ? "object exists" : "null object"));
++
++      if (obj) {
++              dev = obj->my_dev;
++              yaffs_gross_lock(dev);
++              yaffs_unstitch_obj(inode,obj);
++              yaffs_gross_unlock(dev);
++      }
++
++}
++
++/* delete is called when the link count is zero and the inode
++ * is put (ie. nobody wants to know about it anymore, time to
++ * delete the file).
++ * NB Must call clear_inode()
++ */
++static void yaffs_delete_inode(struct inode *inode)
++{
++      yaffs_obj_t *obj = yaffs_InodeToObject(inode);
++      yaffs_dev_t *dev;
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_delete_inode: ino %d, count %d %s\n"), (int)inode->i_ino,
++              atomic_read(&inode->i_count),
++              obj ? "object exists" : "null object"));
++
++      if (obj) {
++              dev = obj->my_dev;
++              yaffs_gross_lock(dev);
++              yaffs_del_obj(obj);
++              yaffs_gross_unlock(dev);
++      }
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
++      truncate_inode_pages(&inode->i_data, 0);
++#endif
++      clear_inode(inode);
++}
++#endif
++
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++static int yaffs_file_flush(struct file *file, fl_owner_t id)
++#else
++static int yaffs_file_flush(struct file *file)
++#endif
++{
++      yaffs_obj_t *obj = yaffs_dentry_to_obj(file->f_dentry);
++
++      yaffs_dev_t *dev = obj->my_dev;
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_file_flush object %d (%s)\n"), obj->obj_id,
++              obj->dirty ? "dirty" : "clean"));
++
++      yaffs_gross_lock(dev);
++
++      yaffs_flush_file(obj, 1, 0);
++
++      yaffs_gross_unlock(dev);
++
++      return 0;
++}
++
++static int yaffs_readpage_nolock(struct file *f, struct page *pg)
++{
++      /* Lifted from jffs2 */
++
++      yaffs_obj_t *obj;
++      unsigned char *pg_buf;
++      int ret;
++
++      yaffs_dev_t *dev;
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_readpage_nolock at %08x, size %08x\n"),
++              (unsigned)(pg->index << PAGE_CACHE_SHIFT),
++              (unsigned)PAGE_CACHE_SIZE));
++
++      obj = yaffs_dentry_to_obj(f->f_dentry);
++
++      dev = obj->my_dev;
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++      BUG_ON(!PageLocked(pg));
++#else
++      if (!PageLocked(pg))
++              PAGE_BUG(pg);
++#endif
++
++      pg_buf = kmap(pg);
++      /* FIXME: Can kmap fail? */
++
++      yaffs_gross_lock(dev);
++
++      ret = yaffs_file_rd(obj, pg_buf,
++                              pg->index << PAGE_CACHE_SHIFT,
++                              PAGE_CACHE_SIZE);
++
++      yaffs_gross_unlock(dev);
++
++      if (ret >= 0)
++              ret = 0;
++
++      if (ret) {
++              ClearPageUptodate(pg);
++              SetPageError(pg);
++      } else {
++              SetPageUptodate(pg);
++              ClearPageError(pg);
++      }
++
++      flush_dcache_page(pg);
++      kunmap(pg);
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage_nolock done\n")));
++      return ret;
++}
++
++static int yaffs_readpage_unlock(struct file *f, struct page *pg)
++{
++      int ret = yaffs_readpage_nolock(f, pg);
++      UnlockPage(pg);
++      return ret;
++}
++
++static int yaffs_readpage(struct file *f, struct page *pg)
++{
++      int ret;
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage\n")));
++      ret=yaffs_readpage_unlock(f, pg);
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage done\n")));
++      return ret;
++}
++
++/* writepage inspired by/stolen from smbfs */
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++static int yaffs_writepage(struct page *page, struct writeback_control *wbc)
++#else
++static int yaffs_writepage(struct page *page)
++#endif
++{
++      yaffs_dev_t *dev;
++      struct address_space *mapping = page->mapping;
++      struct inode *inode;
++      unsigned long end_index;
++      char *buffer;
++      yaffs_obj_t *obj;
++      int nWritten = 0;
++      unsigned n_bytes;
++      loff_t i_size;
++
++      if (!mapping)
++              BUG();
++      inode = mapping->host;
++      if (!inode)
++              BUG();
++      i_size = i_size_read(inode);
++
++      end_index = i_size >> PAGE_CACHE_SHIFT;
++
++      if(page->index < end_index)
++              n_bytes = PAGE_CACHE_SIZE;
++      else {
++              n_bytes = i_size & (PAGE_CACHE_SIZE -1);
++
++              if (page->index > end_index || !n_bytes) {
++                      T(YAFFS_TRACE_OS,
++                              (TSTR("yaffs_writepage at %08x, inode size = %08x!!!\n"),
++                              (unsigned)(page->index << PAGE_CACHE_SHIFT),
++                              (unsigned)inode->i_size));
++                      T(YAFFS_TRACE_OS,
++                              (TSTR("                -> don't care!!\n")));
++
++                      zero_user_segment(page,0,PAGE_CACHE_SIZE);
++                      set_page_writeback(page);
++                      unlock_page(page);
++                      end_page_writeback(page);
++                      return 0;
++              }
++      }
++
++      if(n_bytes != PAGE_CACHE_SIZE)
++              zero_user_segment(page,n_bytes,PAGE_CACHE_SIZE);
++
++      get_page(page);
++
++      buffer = kmap(page);
++
++      obj = yaffs_InodeToObject(inode);
++      dev = obj->my_dev;
++      yaffs_gross_lock(dev);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_writepage at %08x, size %08x\n"),
++              (unsigned)(page->index << PAGE_CACHE_SHIFT), n_bytes));
++      T(YAFFS_TRACE_OS,
++              (TSTR("writepag0: obj = %05x, ino = %05x\n"),
++              (int)obj->variant.file_variant.file_size, (int)inode->i_size));
++
++      nWritten = yaffs_wr_file(obj, buffer,
++                      page->index << PAGE_CACHE_SHIFT, n_bytes, 0);
++
++      yaffs_touch_super(dev);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("writepag1: obj = %05x, ino = %05x\n"),
++              (int)obj->variant.file_variant.file_size, (int)inode->i_size));
++
++      yaffs_gross_unlock(dev);
++
++      kunmap(page);
++      set_page_writeback(page);
++      unlock_page(page);
++      end_page_writeback(page);
++      put_page(page);
++
++      return (nWritten == n_bytes) ? 0 : -ENOSPC;
++}
++
++
++#if (YAFFS_USE_WRITE_BEGIN_END > 0)
++static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
++                              loff_t pos, unsigned len, unsigned flags,
++                              struct page **pagep, void **fsdata)
++{
++      struct page *pg = NULL;
++      pgoff_t index = pos >> PAGE_CACHE_SHIFT;
++
++      int ret = 0;
++      int space_held = 0;
++
++      /* Get a page */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
++      pg = grab_cache_page_write_begin(mapping, index, flags);
++#else
++      pg = __grab_cache_page(mapping, index);
++#endif
++
++      *pagep = pg;
++      if (!pg) {
++              ret =  -ENOMEM;
++              goto out;
++      }
++      T(YAFFS_TRACE_OS,
++              (TSTR("start yaffs_write_begin index %d(%x) uptodate %d\n"),
++              (int)index,(int)index,Page_Uptodate(pg) ? 1 : 0));
++
++      /* Get fs space */
++      space_held = yaffs_hold_space(filp);
++
++      if (!space_held) {
++              ret = -ENOSPC;
++              goto out;
++      }
++
++      /* Update page if required */
++
++      if (!Page_Uptodate(pg))
++              ret = yaffs_readpage_nolock(filp, pg);
++
++      if (ret)
++              goto out;
++
++      /* Happy path return */
++      T(YAFFS_TRACE_OS, (TSTR("end yaffs_write_begin - ok\n")));
++
++      return 0;
++
++out:
++      T(YAFFS_TRACE_OS,
++              (TSTR("end yaffs_write_begin fail returning %d\n"), ret));
++      if (space_held)
++              yaffs_release_space(filp);
++      if (pg) {
++              unlock_page(pg);
++              page_cache_release(pg);
++      }
++      return ret;
++}
++
++#else
++
++static int yaffs_prepare_write(struct file *f, struct page *pg,
++                              unsigned offset, unsigned to)
++{
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_prepair_write\n")));
++
++      if (!Page_Uptodate(pg))
++              return yaffs_readpage_nolock(f, pg);
++      return 0;
++}
++#endif
++
++#if (YAFFS_USE_WRITE_BEGIN_END > 0)
++static int yaffs_write_end(struct file *filp, struct address_space *mapping,
++                              loff_t pos, unsigned len, unsigned copied,
++                              struct page *pg, void *fsdadata)
++{
++      int ret = 0;
++      void *addr, *kva;
++      uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE - 1);
++
++      kva = kmap(pg);
++      addr = kva + offset_into_page;
++
++      T(YAFFS_TRACE_OS,
++              ("yaffs_write_end addr %p pos %x n_bytes %d\n",
++              addr,(unsigned)pos, copied));
++
++      ret = yaffs_file_write(filp, addr, copied, &pos);
++
++      if (ret != copied) {
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_write_end not same size ret %d  copied %d\n"),
++                      ret, copied));
++              SetPageError(pg);
++      } else {
++              /* Nothing */
++      }
++
++      kunmap(pg);
++
++      yaffs_release_space(filp);
++      unlock_page(pg);
++      page_cache_release(pg);
++      return ret;
++}
++#else
++
++static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
++                              unsigned to)
++{
++      void *addr, *kva;
++
++      loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset;
++      int n_bytes = to - offset;
++      int nWritten;
++
++      unsigned spos = pos;
++      unsigned saddr;
++
++      kva = kmap(pg);
++      addr = kva + offset;
++
++      saddr = (unsigned) addr;
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_commit_write addr %x pos %x n_bytes %d\n"),
++              saddr, spos, n_bytes));
++
++      nWritten = yaffs_file_write(f, addr, n_bytes, &pos);
++
++      if (nWritten != n_bytes) {
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_commit_write not same size nWritten %d  n_bytes %d\n"),
++                      nWritten, n_bytes));
++              SetPageError(pg);
++      } else {
++              /* Nothing */
++      }
++
++      kunmap(pg);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_commit_write returning %d\n"),
++              nWritten == n_bytes ? 0 : nWritten));
++
++      return nWritten == n_bytes ? 0 : nWritten;
++}
++#endif
++
++
++static void yaffs_fill_inode_from_obj(struct inode *inode, yaffs_obj_t *obj)
++{
++      if (inode && obj) {
++
++
++              /* Check mode against the variant type and attempt to repair if broken. */
++              __u32 mode = obj->yst_mode;
++              switch (obj->variant_type) {
++              case YAFFS_OBJECT_TYPE_FILE:
++                      if (!S_ISREG(mode)) {
++                              obj->yst_mode &= ~S_IFMT;
++                              obj->yst_mode |= S_IFREG;
++                      }
++
++                      break;
++              case YAFFS_OBJECT_TYPE_SYMLINK:
++                      if (!S_ISLNK(mode)) {
++                              obj->yst_mode &= ~S_IFMT;
++                              obj->yst_mode |= S_IFLNK;
++                      }
++
++                      break;
++              case YAFFS_OBJECT_TYPE_DIRECTORY:
++                      if (!S_ISDIR(mode)) {
++                              obj->yst_mode &= ~S_IFMT;
++                              obj->yst_mode |= S_IFDIR;
++                      }
++
++                      break;
++              case YAFFS_OBJECT_TYPE_UNKNOWN:
++              case YAFFS_OBJECT_TYPE_HARDLINK:
++              case YAFFS_OBJECT_TYPE_SPECIAL:
++              default:
++                      /* TODO? */
++                      break;
++              }
++
++              inode->i_flags |= S_NOATIME;
++
++              inode->i_ino = obj->obj_id;
++              inode->i_mode = obj->yst_mode;
++              inode->i_uid = obj->yst_uid;
++              inode->i_gid = obj->yst_gid;
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
++              inode->i_blksize = inode->i_sb->s_blocksize;
++#endif
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++
++              inode->i_rdev = old_decode_dev(obj->yst_rdev);
++              inode->i_atime.tv_sec = (time_t) (obj->yst_atime);
++              inode->i_atime.tv_nsec = 0;
++              inode->i_mtime.tv_sec = (time_t) obj->yst_mtime;
++              inode->i_mtime.tv_nsec = 0;
++              inode->i_ctime.tv_sec = (time_t) obj->yst_ctime;
++              inode->i_ctime.tv_nsec = 0;
++#else
++              inode->i_rdev = obj->yst_rdev;
++              inode->i_atime = obj->yst_atime;
++              inode->i_mtime = obj->yst_mtime;
++              inode->i_ctime = obj->yst_ctime;
++#endif
++              inode->i_size = yaffs_get_obj_length(obj);
++              inode->i_blocks = (inode->i_size + 511) >> 9;
++
++              inode->i_nlink = yaffs_get_obj_link_count(obj);
++
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_fill_inode mode %x uid %d gid %d size %d count %d\n"),
++                      inode->i_mode, inode->i_uid, inode->i_gid,
++                      (int)inode->i_size, atomic_read(&inode->i_count)));
++
++              switch (obj->yst_mode & S_IFMT) {
++              default:        /* fifo, device or socket */
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++                      init_special_inode(inode, obj->yst_mode,
++                                      old_decode_dev(obj->yst_rdev));
++#else
++                      init_special_inode(inode, obj->yst_mode,
++                                      (dev_t) (obj->yst_rdev));
++#endif
++                      break;
++              case S_IFREG:   /* file */
++                      inode->i_op = &yaffs_file_inode_operations;
++                      inode->i_fop = &yaffs_file_operations;
++                      inode->i_mapping->a_ops =
++                              &yaffs_file_address_operations;
++                      break;
++              case S_IFDIR:   /* directory */
++                      inode->i_op = &yaffs_dir_inode_operations;
++                      inode->i_fop = &yaffs_dir_operations;
++                      break;
++              case S_IFLNK:   /* symlink */
++                      inode->i_op = &yaffs_symlink_inode_operations;
++                      break;
++              }
++
++              yaffs_InodeToObjectLV(inode) = obj;
++
++              obj->my_inode = inode;
++
++      } else {
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_FileInode invalid parameters\n")));
++      }
++
++}
++
++struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
++                              yaffs_obj_t *obj)
++{
++      struct inode *inode;
++
++      if (!sb) {
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_get_inode for NULL super_block!!\n")));
++              return NULL;
++
++      }
++
++      if (!obj) {
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_get_inode for NULL object!!\n")));
++              return NULL;
++
++      }
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_get_inode for object %d\n"), obj->obj_id));
++
++      inode = Y_IGET(sb, obj->obj_id);
++      if (IS_ERR(inode))
++              return NULL;
++
++      /* NB Side effect: iget calls back to yaffs_read_inode(). */
++      /* iget also increments the inode's i_count */
++      /* NB You can't be holding grossLock or deadlock will happen! */
++
++      return inode;
++}
++
++static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
++                              loff_t *pos)
++{
++      yaffs_obj_t *obj;
++      int nWritten, ipos;
++      struct inode *inode;
++      yaffs_dev_t *dev;
++
++      obj = yaffs_dentry_to_obj(f->f_dentry);
++
++      dev = obj->my_dev;
++
++      yaffs_gross_lock(dev);
++
++      inode = f->f_dentry->d_inode;
++
++      if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND)
++              ipos = inode->i_size;
++      else
++              ipos = *pos;
++
++      if (!obj)
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_file_write: hey obj is null!\n")));
++      else
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_file_write about to write writing %u(%x) bytes"
++                      "to object %d at %d(%x)\n"),
++                      (unsigned) n, (unsigned) n, obj->obj_id, ipos,ipos));
++
++      nWritten = yaffs_wr_file(obj, buf, ipos, n, 0);
++
++      yaffs_touch_super(dev);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_file_write: %d(%x) bytes written\n"),
++              (unsigned )n,(unsigned)n));
++
++      if (nWritten > 0) {
++              ipos += nWritten;
++              *pos = ipos;
++              if (ipos > inode->i_size) {
++                      inode->i_size = ipos;
++                      inode->i_blocks = (ipos + 511) >> 9;
++
++                      T(YAFFS_TRACE_OS,
++                              (TSTR("yaffs_file_write size updated to %d bytes, "
++                              "%d blocks\n"),
++                              ipos, (int)(inode->i_blocks)));
++              }
++
++      }
++      yaffs_gross_unlock(dev);
++      return (nWritten == 0) && (n > 0) ? -ENOSPC : nWritten;
++}
++
++/* Space holding and freeing is done to ensure we have space available for write_begin/end */
++/* For now we just assume few parallel writes and check against a small number. */
++/* Todo: need to do this with a counter to handle parallel reads better */
++
++static ssize_t yaffs_hold_space(struct file *f)
++{
++      yaffs_obj_t *obj;
++      yaffs_dev_t *dev;
++
++      int n_free_chunks;
++
++
++      obj = yaffs_dentry_to_obj(f->f_dentry);
++
++      dev = obj->my_dev;
++
++      yaffs_gross_lock(dev);
++
++      n_free_chunks = yaffs_get_n_free_chunks(dev);
++
++      yaffs_gross_unlock(dev);
++
++      return (n_free_chunks > 20) ? 1 : 0;
++}
++
++static void yaffs_release_space(struct file *f)
++{
++      yaffs_obj_t *obj;
++      yaffs_dev_t *dev;
++
++
++      obj = yaffs_dentry_to_obj(f->f_dentry);
++
++      dev = obj->my_dev;
++
++      yaffs_gross_lock(dev);
++
++
++      yaffs_gross_unlock(dev);
++}
++
++
++static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin)
++{
++      long long retval;
++
++      lock_kernel();
++
++      switch (origin){
++      case 2:
++              offset += i_size_read(file->f_path.dentry->d_inode);
++              break;
++      case 1:
++              offset += file->f_pos;
++      }
++      retval = -EINVAL;
++
++      if (offset >= 0){
++              if (offset != file->f_pos)
++                      file->f_pos = offset;
++
++              retval = offset;
++      }
++      unlock_kernel();
++      return retval;
++}
++
++
++static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)
++{
++      yaffs_obj_t *obj;
++      yaffs_dev_t *dev;
++        struct yaffs_SearchContext *sc;
++      struct inode *inode = f->f_dentry->d_inode;
++      unsigned long offset, curoffs;
++      yaffs_obj_t *l;
++        int retVal = 0;
++
++      char name[YAFFS_MAX_NAME_LENGTH + 1];
++
++      obj = yaffs_dentry_to_obj(f->f_dentry);
++      dev = obj->my_dev;
++
++      yaffs_gross_lock(dev);
++
++      yaffs_dev_to_lc(dev)->readdirProcess = current;
++
++      offset = f->f_pos;
++
++        sc = yaffs_NewSearch(obj);
++        if(!sc){
++                retVal = -ENOMEM;
++                goto out;
++        }
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_readdir: starting at %d\n"), (int)offset));
++
++      if (offset == 0) {
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_readdir: entry . ino %d \n"),
++                      (int)inode->i_ino));
++              yaffs_gross_unlock(dev);
++              if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0){
++                      yaffs_gross_lock(dev);
++                      goto out;
++              }
++              yaffs_gross_lock(dev);
++              offset++;
++              f->f_pos++;
++      }
++      if (offset == 1) {
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_readdir: entry .. ino %d \n"),
++                      (int)f->f_dentry->d_parent->d_inode->i_ino));
++              yaffs_gross_unlock(dev);
++              if (filldir(dirent, "..", 2, offset,
++                      f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0){
++                      yaffs_gross_lock(dev);
++                      goto out;
++              }
++              yaffs_gross_lock(dev);
++              offset++;
++              f->f_pos++;
++      }
++
++      curoffs = 1;
++
++      /* If the directory has changed since the open or last call to
++         readdir, rewind to after the 2 canned entries. */
++      if (f->f_version != inode->i_version) {
++              offset = 2;
++              f->f_pos = offset;
++              f->f_version = inode->i_version;
++      }
++
++      while(sc->nextReturn){
++              curoffs++;
++                l = sc->nextReturn;
++              if (curoffs >= offset) {
++                        int this_inode = yaffs_get_obj_inode(l);
++                        int this_type = yaffs_get_obj_type(l);
++
++                      yaffs_get_obj_name(l, name,
++                                          YAFFS_MAX_NAME_LENGTH + 1);
++                      T(YAFFS_TRACE_OS,
++                        (TSTR("yaffs_readdir: %s inode %d\n"),
++                        name, yaffs_get_obj_inode(l)));
++
++                        yaffs_gross_unlock(dev);
++
++                      if (filldir(dirent,
++                                      name,
++                                      strlen(name),
++                                      offset,
++                                      this_inode,
++                                      this_type) < 0){
++                              yaffs_gross_lock(dev);
++                              goto out;
++                      }
++
++                        yaffs_gross_lock(dev);
++
++                      offset++;
++                      f->f_pos++;
++              }
++                yaffs_search_advance(sc);
++      }
++
++out:
++      yaffs_search_end(sc);
++      yaffs_dev_to_lc(dev)->readdirProcess = NULL;
++      yaffs_gross_unlock(dev);
++
++      return retVal;
++}
++
++
++
++/*
++ * File creation. Allocate an inode, and we're done..
++ */
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
++#define YCRED(x) x
++#else
++#define YCRED(x) (x->cred)
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
++                      dev_t rdev)
++#else
++static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
++                      int rdev)
++#endif
++{
++      struct inode *inode;
++
++      yaffs_obj_t *obj = NULL;
++      yaffs_dev_t *dev;
++
++      yaffs_obj_t *parent = yaffs_InodeToObject(dir);
++
++      int error = -ENOSPC;
++      uid_t uid = YCRED(current)->fsuid;
++      gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
++
++      if ((dir->i_mode & S_ISGID) && S_ISDIR(mode))
++              mode |= S_ISGID;
++
++      if (parent) {
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_mknod: parent object %d type %d\n"),
++                      parent->obj_id, parent->variant_type));
++      } else {
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_mknod: could not get parent object\n")));
++              return -EPERM;
++      }
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making oject for %s, "
++                      "mode %x dev %x\n"),
++                      dentry->d_name.name, mode, rdev));
++
++      dev = parent->my_dev;
++
++      yaffs_gross_lock(dev);
++
++      switch (mode & S_IFMT) {
++      default:
++              /* Special (socket, fifo, device...) */
++              T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making special\n")));
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++              obj = yaffs_create_special(parent, dentry->d_name.name, mode, uid,
++                              gid, old_encode_dev(rdev));
++#else
++              obj = yaffs_create_special(parent, dentry->d_name.name, mode, uid,
++                              gid, rdev);
++#endif
++              break;
++      case S_IFREG:           /* file          */
++              T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making file\n")));
++              obj = yaffs_create_file(parent, dentry->d_name.name, mode, uid,
++                              gid);
++              break;
++      case S_IFDIR:           /* directory */
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_mknod: making directory\n")));
++              obj = yaffs_create_dir(parent, dentry->d_name.name, mode,
++                                      uid, gid);
++              break;
++      case S_IFLNK:           /* symlink */
++              T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making symlink\n")));
++              obj = NULL;     /* Do we ever get here? */
++              break;
++      }
++
++      /* Can not call yaffs_get_inode() with gross lock held */
++      yaffs_gross_unlock(dev);
++
++      if (obj) {
++              inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj);
++              d_instantiate(dentry, inode);
++              update_dir_time(dir);
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_mknod created object %d count = %d\n"),
++                      obj->obj_id, atomic_read(&inode->i_count)));
++              error = 0;
++              yaffs_fill_inode_from_obj(dir,parent);
++      } else {
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_mknod failed making object\n")));
++              error = -ENOMEM;
++      }
++
++      return error;
++}
++
++static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
++{
++      int retVal;
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_mkdir\n")));
++      retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0);
++      return retVal;
++}
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
++                      struct nameidata *n)
++#else
++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode)
++#endif
++{
++      T(YAFFS_TRACE_OS,(TSTR("yaffs_create\n")));
++      return yaffs_mknod(dir, dentry, mode | S_IFREG, 0);
++}
++
++static int yaffs_unlink(struct inode *dir, struct dentry *dentry)
++{
++      int retVal;
++
++      yaffs_dev_t *dev;
++      yaffs_obj_t *obj;
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_unlink %d:%s\n"),
++              (int)(dir->i_ino),
++              dentry->d_name.name));
++      obj = yaffs_InodeToObject(dir);
++      dev = obj->my_dev;
++
++      yaffs_gross_lock(dev);
++
++      retVal = yaffs_unlinker(obj, dentry->d_name.name);
++
++      if (retVal == YAFFS_OK) {
++              dentry->d_inode->i_nlink--;
++              dir->i_version++;
++              yaffs_gross_unlock(dev);
++              mark_inode_dirty(dentry->d_inode);
++              update_dir_time(dir);
++              return 0;
++      }
++      yaffs_gross_unlock(dev);
++      return -ENOTEMPTY;
++}
++
++/*
++ * Create a link...
++ */
++static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
++                      struct dentry *dentry)
++{
++      struct inode *inode = old_dentry->d_inode;
++      yaffs_obj_t *obj = NULL;
++      yaffs_obj_t *link = NULL;
++      yaffs_dev_t *dev;
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_link\n")));
++
++      obj = yaffs_InodeToObject(inode);
++      dev = obj->my_dev;
++
++      yaffs_gross_lock(dev);
++
++      if (!S_ISDIR(inode->i_mode))            /* Don't link directories */
++              link = yaffs_link_obj(yaffs_InodeToObject(dir), dentry->d_name.name,
++                      obj);
++
++      if (link) {
++              old_dentry->d_inode->i_nlink = yaffs_get_obj_link_count(obj);
++              d_instantiate(dentry, old_dentry->d_inode);
++              atomic_inc(&old_dentry->d_inode->i_count);
++              T(YAFFS_TRACE_OS,
++                      (TSTR("yaffs_link link count %d i_count %d\n"),
++                      old_dentry->d_inode->i_nlink,
++                      atomic_read(&old_dentry->d_inode->i_count)));
++      }
++
++      yaffs_gross_unlock(dev);
++
++      if (link){
++              update_dir_time(dir);
++              return 0;
++      }
++
++      return -EPERM;
++}
++
++static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
++                              const char *symname)
++{
++      yaffs_obj_t *obj;
++      yaffs_dev_t *dev;
++      uid_t uid = YCRED(current)->fsuid;
++      gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_symlink\n")));
++
++      dev = yaffs_InodeToObject(dir)->my_dev;
++      yaffs_gross_lock(dev);
++      obj = yaffs_create_symlink(yaffs_InodeToObject(dir), dentry->d_name.name,
++                              S_IFLNK | S_IRWXUGO, uid, gid, symname);
++      yaffs_gross_unlock(dev);
++
++      if (obj) {
++              struct inode *inode;
++
++              inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
++              d_instantiate(dentry, inode);
++              update_dir_time(dir);
++              T(YAFFS_TRACE_OS, (TSTR("symlink created OK\n")));
++              return 0;
++      } else {
++              T(YAFFS_TRACE_OS, (TSTR("symlink not created\n")));
++      }
++
++      return -ENOMEM;
++}
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
++static int yaffs_sync_object(struct file *file, int datasync)
++#else
++static int yaffs_sync_object(struct file *file, struct dentry *dentry,
++                              int datasync)
++#endif
++{
++
++      yaffs_obj_t *obj;
++      yaffs_dev_t *dev;
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
++      struct dentry *dentry = file->f_path.dentry;
++#endif
++
++      obj = yaffs_dentry_to_obj(dentry);
++
++      dev = obj->my_dev;
++
++      T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC,
++              (TSTR("yaffs_sync_object\n")));
++      yaffs_gross_lock(dev);
++      yaffs_flush_file(obj, 1, datasync);
++      yaffs_gross_unlock(dev);
++      return 0;
++}
++
++/*
++ * The VFS layer already does all the dentry stuff for rename.
++ *
++ * NB: POSIX says you can rename an object over an old object of the same name
++ */
++static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
++                      struct inode *new_dir, struct dentry *new_dentry)
++{
++      yaffs_dev_t *dev;
++      int retVal = YAFFS_FAIL;
++      yaffs_obj_t *target;
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_rename\n")));
++      dev = yaffs_InodeToObject(old_dir)->my_dev;
++
++      yaffs_gross_lock(dev);
++
++      /* Check if the target is an existing directory that is not empty. */
++      target = yaffs_find_by_name(yaffs_InodeToObject(new_dir),
++                              new_dentry->d_name.name);
++
++
++
++      if (target && target->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY &&
++              !ylist_empty(&target->variant.dir_variant.children)) {
++
++              T(YAFFS_TRACE_OS, (TSTR("target is non-empty dir\n")));
++
++              retVal = YAFFS_FAIL;
++      } else {
++              /* Now does unlinking internally using shadowing mechanism */
++              T(YAFFS_TRACE_OS, (TSTR("calling yaffs_rename_obj\n")));
++
++              retVal = yaffs_rename_obj(yaffs_InodeToObject(old_dir),
++                              old_dentry->d_name.name,
++                              yaffs_InodeToObject(new_dir),
++                              new_dentry->d_name.name);
++      }
++      yaffs_gross_unlock(dev);
++
++      if (retVal == YAFFS_OK) {
++              if (target) {
++                      new_dentry->d_inode->i_nlink--;
++                      mark_inode_dirty(new_dentry->d_inode);
++              }
++              
++              update_dir_time(old_dir);
++              if(old_dir != new_dir)
++                      update_dir_time(new_dir);
++              return 0;
++      } else {
++              return -ENOTEMPTY;
++      }
++}
++
++static int yaffs_setattr(struct dentry *dentry, struct iattr *attr)
++{
++      struct inode *inode = dentry->d_inode;
++      int error = 0;
++      yaffs_dev_t *dev;
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_setattr of object %d\n"),
++              yaffs_InodeToObject(inode)->obj_id));
++
++      /* Fail if a requested resize >= 2GB */         
++      if (attr->ia_valid & ATTR_SIZE &&
++              (attr->ia_size >> 31))
++              error = -EINVAL;
++
++      if (error == 0)
++              error = inode_change_ok(inode, attr);
++      if (error == 0) {
++              int result;
++              if (!error){
++                      error = yaffs_vfs_setattr(inode, attr);
++                      T(YAFFS_TRACE_OS,(TSTR("inode_setattr called\n")));
++                      if (attr->ia_valid & ATTR_SIZE){
++                              yaffs_vfs_setsize(inode,attr->ia_size);
++                              inode->i_blocks = (inode->i_size + 511) >> 9;
++                      }
++              }
++              dev = yaffs_InodeToObject(inode)->my_dev;
++              if (attr->ia_valid & ATTR_SIZE){
++                      T(YAFFS_TRACE_OS,(TSTR("resize to %d(%x)\n"),
++                              (int)(attr->ia_size),(int)(attr->ia_size)));
++              }
++              yaffs_gross_lock(dev);
++              result = yaffs_set_attribs(yaffs_InodeToObject(inode), attr);
++              if(result == YAFFS_OK) {
++                      error = 0;
++              } else {
++                      error = -EPERM;
++              }
++              yaffs_gross_unlock(dev);
++
++      }
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_setattr done returning %d\n"),error));
++
++      return error;
++}
++
++#ifdef CONFIG_YAFFS_XATTR
++int yaffs_setxattr(struct dentry *dentry, const char *name,
++                      const void *value, size_t size, int flags)
++{
++      struct inode *inode = dentry->d_inode;
++      int error = 0;
++      yaffs_dev_t *dev;
++      yaffs_obj_t *obj = yaffs_InodeToObject(inode);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_setxattr of object %d\n"),
++              obj->obj_id));
++
++
++      if (error == 0) {
++              int result;
++              dev = obj->my_dev;
++              yaffs_gross_lock(dev);
++              result = yaffs_set_xattrib(obj, name, value, size, flags);
++              if(result == YAFFS_OK)
++                      error = 0;
++              else if(result < 0)
++                      error = result;
++              yaffs_gross_unlock(dev);
++
++      }
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_setxattr done returning %d\n"),error));
++
++      return error;
++}
++
++
++ssize_t yaffs_getxattr(struct dentry *dentry, const char *name, void *buff,
++                      size_t size)
++{
++      struct inode *inode = dentry->d_inode;
++      int error = 0;
++      yaffs_dev_t *dev;
++      yaffs_obj_t *obj = yaffs_InodeToObject(inode);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_getxattr \"%s\" from object %d\n"),
++              name, obj->obj_id));
++
++      if (error == 0) {
++              dev = obj->my_dev;
++              yaffs_gross_lock(dev);
++              error = yaffs_get_xattrib(obj, name, buff, size);
++              yaffs_gross_unlock(dev);
++
++      }
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_getxattr done returning %d\n"),error));
++
++      return error;
++}
++
++int yaffs_removexattr(struct dentry *dentry, const char *name)
++{
++      struct inode *inode = dentry->d_inode;
++      int error = 0;
++      yaffs_dev_t *dev;
++      yaffs_obj_t *obj = yaffs_InodeToObject(inode);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_removexattr of object %d\n"),
++              obj->obj_id));
++
++
++      if (error == 0) {
++              int result;
++              dev = obj->my_dev;
++              yaffs_gross_lock(dev);
++              result = yaffs_remove_xattrib(obj, name);
++              if(result == YAFFS_OK)
++                      error = 0;
++              else if(result < 0)
++                      error = result;
++              yaffs_gross_unlock(dev);
++
++      }
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_removexattr done returning %d\n"),error));
++
++      return error;
++}
++
++ssize_t yaffs_listxattr(struct dentry *dentry, char *buff, size_t size)
++{
++      struct inode *inode = dentry->d_inode;
++      int error = 0;
++      yaffs_dev_t *dev;
++      yaffs_obj_t *obj = yaffs_InodeToObject(inode);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_listxattr of object %d\n"),
++              obj->obj_id));
++
++
++      if (error == 0) {
++              dev = obj->my_dev;
++              yaffs_gross_lock(dev);
++              error = yaffs_list_xattrib(obj, buff, size);
++              yaffs_gross_unlock(dev);
++
++      }
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_listxattr done returning %d\n"),error));
++
++      return error;
++}
++
++#endif
++
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf)
++{
++      yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev;
++      struct super_block *sb = dentry->d_sb;
++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf)
++{
++      yaffs_dev_t *dev = yaffs_SuperToDevice(sb);
++#else
++static int yaffs_statfs(struct super_block *sb, struct statfs *buf)
++{
++      yaffs_dev_t *dev = yaffs_SuperToDevice(sb);
++#endif
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_statfs\n")));
++
++      yaffs_gross_lock(dev);
++
++      buf->f_type = YAFFS_MAGIC;
++      buf->f_bsize = sb->s_blocksize;
++      buf->f_namelen = 255;
++
++      if (dev->data_bytes_per_chunk & (dev->data_bytes_per_chunk - 1)) {
++              /* Do this if chunk size is not a power of 2 */
++
++              uint64_t bytesInDev;
++              uint64_t bytesFree;
++
++              bytesInDev = ((uint64_t)((dev->param.end_block - dev->param.start_block + 1))) *
++                      ((uint64_t)(dev->param.chunks_per_block * dev->data_bytes_per_chunk));
++
++              do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */
++              buf->f_blocks = bytesInDev;
++
++              bytesFree  = ((uint64_t)(yaffs_get_n_free_chunks(dev))) *
++                      ((uint64_t)(dev->data_bytes_per_chunk));
++
++              do_div(bytesFree, sb->s_blocksize);
++
++              buf->f_bfree = bytesFree;
++
++      } else if (sb->s_blocksize > dev->data_bytes_per_chunk) {
++
++              buf->f_blocks =
++                      (dev->param.end_block - dev->param.start_block + 1) *
++                      dev->param.chunks_per_block /
++                      (sb->s_blocksize / dev->data_bytes_per_chunk);
++              buf->f_bfree =
++                      yaffs_get_n_free_chunks(dev) /
++                      (sb->s_blocksize / dev->data_bytes_per_chunk);
++      } else {
++              buf->f_blocks =
++                      (dev->param.end_block - dev->param.start_block + 1) *
++                      dev->param.chunks_per_block *
++                      (dev->data_bytes_per_chunk / sb->s_blocksize);
++
++              buf->f_bfree =
++                      yaffs_get_n_free_chunks(dev) *
++                      (dev->data_bytes_per_chunk / sb->s_blocksize);
++      }
++
++      buf->f_files = 0;
++      buf->f_ffree = 0;
++      buf->f_bavail = buf->f_bfree;
++
++      yaffs_gross_unlock(dev);
++      return 0;
++}
++
++
++
++static void yaffs_flush_inodes(struct super_block *sb)
++{
++      struct inode *iptr;
++      yaffs_obj_t *obj;
++      
++      list_for_each_entry(iptr,&sb->s_inodes, i_sb_list){
++              obj = yaffs_InodeToObject(iptr);
++              if(obj){
++                      T(YAFFS_TRACE_OS, (TSTR("flushing obj %d\n"),
++                              obj->obj_id));
++                      yaffs_flush_file(obj,1,0);
++              }
++      }
++}
++
++
++static void yaffs_flush_super(struct super_block *sb, int do_checkpoint)
++{
++      yaffs_dev_t *dev = yaffs_SuperToDevice(sb);     
++      if(!dev)
++              return;
++      
++      yaffs_flush_inodes(sb);
++      yaffs_update_dirty_dirs(dev);
++      yaffs_flush_whole_cache(dev);
++      if(do_checkpoint)
++              yaffs_checkpoint_save(dev);
++}
++
++
++static unsigned yaffs_bg_gc_urgency(yaffs_dev_t *dev)
++{
++      unsigned erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block;
++      struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev);
++      unsigned scatteredFree = 0; /* Free chunks not in an erased block */
++
++      if(erasedChunks < dev->n_free_chunks)
++              scatteredFree = (dev->n_free_chunks - erasedChunks);
++
++      if(!context->bgRunning)
++              return 0;
++      else if(scatteredFree < (dev->param.chunks_per_block * 2))
++              return 0;
++      else if(erasedChunks > dev->n_free_chunks/2)
++              return 0;
++      else if(erasedChunks > dev->n_free_chunks/4)
++              return 1;
++      else
++              return 2;
++}
++
++static int yaffs_do_sync_fs(struct super_block *sb,
++                              int request_checkpoint)
++{
++
++      yaffs_dev_t *dev = yaffs_SuperToDevice(sb);
++      unsigned int oneshot_checkpoint = (yaffs_auto_checkpoint & 4);
++      unsigned gc_urgent = yaffs_bg_gc_urgency(dev);
++      int do_checkpoint;
++
++      T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND,
++              (TSTR("yaffs_do_sync_fs: gc-urgency %d %s %s%s\n"),
++              gc_urgent,
++              sb->s_dirt ? "dirty" : "clean",
++              request_checkpoint ? "checkpoint requested" : "no checkpoint",
++              oneshot_checkpoint ? " one-shot" : "" ));
++
++      yaffs_gross_lock(dev);
++      do_checkpoint = ((request_checkpoint && !gc_urgent) ||
++                      oneshot_checkpoint) &&
++                      !dev->is_checkpointed;
++
++      if (sb->s_dirt || do_checkpoint) {
++              yaffs_flush_super(sb, !dev->is_checkpointed && do_checkpoint);
++              sb->s_dirt = 0;
++              if(oneshot_checkpoint)
++                      yaffs_auto_checkpoint &= ~4;
++      }
++      yaffs_gross_unlock(dev);
++
++      return 0;
++}
++
++/*
++ * yaffs background thread functions .
++ * yaffs_bg_thread_fn() the thread function
++ * yaffs_bg_start() launches the background thread.
++ * yaffs_bg_stop() cleans up the background thread.
++ *
++ * NB: 
++ * The thread should only run after the yaffs is initialised
++ * The thread should be stopped before yaffs is unmounted.
++ * The thread should not do any writing while the fs is in read only.
++ */
++
++#ifdef YAFFS_COMPILE_BACKGROUND
++
++void yaffs_background_waker(unsigned long data)
++{
++      wake_up_process((struct task_struct *)data);
++}
++
++static int yaffs_bg_thread_fn(void *data)
++{
++      yaffs_dev_t *dev = (yaffs_dev_t *)data;
++      struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev);
++      unsigned long now = jiffies;
++      unsigned long next_dir_update = now;
++      unsigned long next_gc = now;
++      unsigned long expires;
++      unsigned int urgency;
++
++      int gcResult;
++      struct timer_list timer;
++
++      T(YAFFS_TRACE_BACKGROUND,
++              (TSTR("yaffs_background starting for dev %p\n"),
++              (void *)dev));
++
++#ifdef YAFFS_COMPILE_FREEZER
++      set_freezable();
++#endif
++      while(context->bgRunning){
++              T(YAFFS_TRACE_BACKGROUND,
++                      (TSTR("yaffs_background\n")));
++
++              if(kthread_should_stop())
++                      break;
++
++#ifdef YAFFS_COMPILE_FREEZER
++              if(try_to_freeze())
++                      continue;
++#endif
++              yaffs_gross_lock(dev);
++
++              now = jiffies;
++
++              if(time_after(now, next_dir_update) && yaffs_bg_enable){
++                      yaffs_update_dirty_dirs(dev);
++                      next_dir_update = now + HZ;
++              }
++
++              if(time_after(now,next_gc) && yaffs_bg_enable){
++                      if(!dev->is_checkpointed){
++                              urgency = yaffs_bg_gc_urgency(dev);
++                              gcResult = yaffs_bg_gc(dev, urgency);
++                              if(urgency > 1)
++                                      next_gc = now + HZ/20+1;
++                              else if(urgency > 0)
++                                      next_gc = now + HZ/10+1;
++                              else
++                                      next_gc = now + HZ * 2;
++                      } else /*
++                              * gc not running so set to next_dir_update
++                              * to cut down on wake ups
++                              */
++                              next_gc = next_dir_update;
++              }
++              yaffs_gross_unlock(dev);
++#if 1
++              expires = next_dir_update;
++              if (time_before(next_gc,expires))
++                      expires = next_gc;
++              if(time_before(expires,now))
++                      expires = now + HZ;
++
++              Y_INIT_TIMER(&timer);
++              timer.expires = expires+1;
++              timer.data = (unsigned long) current;
++              timer.function = yaffs_background_waker;
++
++                set_current_state(TASK_INTERRUPTIBLE);
++              add_timer(&timer);
++              schedule();
++              del_timer_sync(&timer);
++#else
++              msleep(10);
++#endif
++      }
++
++      return 0;
++}
++
++static int yaffs_bg_start(yaffs_dev_t *dev)
++{
++      int retval = 0;
++      struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev);
++
++      if(dev->read_only)
++              return -1;
++
++      context->bgRunning = 1;
++
++      context->bgThread = kthread_run(yaffs_bg_thread_fn,
++                              (void *)dev,"yaffs-bg-%d",context->mount_id);
++
++      if(IS_ERR(context->bgThread)){
++              retval = PTR_ERR(context->bgThread);
++              context->bgThread = NULL;
++              context->bgRunning = 0;
++      }
++      return retval;
++}
++
++static void yaffs_bg_stop(yaffs_dev_t *dev)
++{
++      struct yaffs_LinuxContext *ctxt = yaffs_dev_to_lc(dev);
++
++      ctxt->bgRunning = 0;
++
++      if( ctxt->bgThread){
++              kthread_stop(ctxt->bgThread);
++              ctxt->bgThread = NULL;
++      }
++}
++#else
++static int yaffs_bg_thread_fn(void *data)
++{
++      return 0;
++}
++
++static int yaffs_bg_start(yaffs_dev_t *dev)
++{
++      return 0;
++}
++
++static void yaffs_bg_stop(yaffs_dev_t *dev)
++{
++}
++#endif
++
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++static void yaffs_write_super(struct super_block *sb)
++#else
++static int yaffs_write_super(struct super_block *sb)
++#endif
++{
++      unsigned request_checkpoint = (yaffs_auto_checkpoint >= 2);
++
++      T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND,
++              (TSTR("yaffs_write_super%s\n"),
++              request_checkpoint ? " checkpt" : ""));
++
++      yaffs_do_sync_fs(sb, request_checkpoint);
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18))
++      return 0;
++#endif
++}
++
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++static int yaffs_sync_fs(struct super_block *sb, int wait)
++#else
++static int yaffs_sync_fs(struct super_block *sb)
++#endif
++{
++      unsigned request_checkpoint = (yaffs_auto_checkpoint >= 1);
++
++      T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC,
++              (TSTR("yaffs_sync_fs%s\n"),
++              request_checkpoint ? " checkpt" : ""));
++
++      yaffs_do_sync_fs(sb, request_checkpoint);
++
++      return 0;
++}
++
++#ifdef YAFFS_USE_OWN_IGET
++
++static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino)
++{
++      struct inode *inode;
++      yaffs_obj_t *obj;
++      yaffs_dev_t *dev = yaffs_SuperToDevice(sb);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_iget for %lu\n"), ino));
++
++      inode = iget_locked(sb, ino);
++      if (!inode)
++              return ERR_PTR(-ENOMEM);
++      if (!(inode->i_state & I_NEW))
++              return inode;
++
++      /* NB This is called as a side effect of other functions, but
++       * we had to release the lock to prevent deadlocks, so
++       * need to lock again.
++       */
++
++      yaffs_gross_lock(dev);
++
++      obj = yaffs_find_by_number(dev, inode->i_ino);
++
++      yaffs_fill_inode_from_obj(inode, obj);
++
++      yaffs_gross_unlock(dev);
++
++      unlock_new_inode(inode);
++      return inode;
++}
++
++#else
++
++static void yaffs_read_inode(struct inode *inode)
++{
++      /* NB This is called as a side effect of other functions, but
++       * we had to release the lock to prevent deadlocks, so
++       * need to lock again.
++       */
++
++      yaffs_obj_t *obj;
++      yaffs_dev_t *dev = yaffs_SuperToDevice(inode->i_sb);
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_read_inode for %d\n"), (int)inode->i_ino));
++
++      if(current != yaffs_dev_to_lc(dev)->readdirProcess)
++              yaffs_gross_lock(dev);
++
++      obj = yaffs_find_by_number(dev, inode->i_ino);
++
++      yaffs_fill_inode_from_obj(inode, obj);
++
++      if(current != yaffs_dev_to_lc(dev)->readdirProcess)
++              yaffs_gross_unlock(dev);
++}
++
++#endif
++
++static YLIST_HEAD(yaffs_context_list);
++struct semaphore yaffs_context_lock;
++
++static void yaffs_put_super(struct super_block *sb)
++{
++      yaffs_dev_t *dev = yaffs_SuperToDevice(sb);
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_put_super\n")));
++
++      T(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND,
++              (TSTR("Shutting down yaffs background thread\n")));
++      yaffs_bg_stop(dev);
++      T(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND,
++              (TSTR("yaffs background thread shut down\n")));
++
++      yaffs_gross_lock(dev);
++
++      yaffs_flush_super(sb,1);
++
++      if (yaffs_dev_to_lc(dev)->putSuperFunc)
++              yaffs_dev_to_lc(dev)->putSuperFunc(sb);
++
++
++      yaffs_deinitialise(dev);
++
++      yaffs_gross_unlock(dev);
++
++      down(&yaffs_context_lock);
++      ylist_del_init(&(yaffs_dev_to_lc(dev)->contextList));
++      up(&yaffs_context_lock);
++
++      if (yaffs_dev_to_lc(dev)->spareBuffer) {
++              YFREE(yaffs_dev_to_lc(dev)->spareBuffer);
++              yaffs_dev_to_lc(dev)->spareBuffer = NULL;
++      }
++
++      kfree(dev);
++}
++
++
++static void yaffs_MTDPutSuper(struct super_block *sb)
++{
++      struct mtd_info *mtd = yaffs_dev_to_mtd(yaffs_SuperToDevice(sb));
++
++      if (mtd->sync)
++              mtd->sync(mtd);
++
++      put_mtd_device(mtd);
++}
++
++
++static void yaffs_touch_super(yaffs_dev_t *dev)
++{
++      struct super_block *sb = yaffs_dev_to_lc(dev)->superBlock;
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_touch_super() sb = %p\n"), sb));
++      if (sb)
++              sb->s_dirt = 1;
++}
++
++typedef struct {
++      int inband_tags;
++      int skip_checkpoint_read;
++      int skip_checkpoint_write;
++      int no_cache;
++      int tags_ecc_on;
++      int tags_ecc_overridden;
++      int lazy_loading_enabled;
++      int lazy_loading_overridden;
++      int empty_lost_and_found;
++      int empty_lost_and_found_overridden;
++} yaffs_options;
++
++#define MAX_OPT_LEN 30
++static int yaffs_parse_options(yaffs_options *options, const char *options_str)
++{
++      char cur_opt[MAX_OPT_LEN + 1];
++      int p;
++      int error = 0;
++
++      /* Parse through the options which is a comma seperated list */
++
++      while (options_str && *options_str && !error) {
++              memset(cur_opt, 0, MAX_OPT_LEN + 1);
++              p = 0;
++
++              while(*options_str == ',')
++                      options_str++;
++
++              while (*options_str && *options_str != ',') {
++                      if (p < MAX_OPT_LEN) {
++                              cur_opt[p] = *options_str;
++                              p++;
++                      }
++                      options_str++;
++              }
++
++              if (!strcmp(cur_opt, "inband-tags"))
++                      options->inband_tags = 1;
++              else if (!strcmp(cur_opt, "tags-ecc-off")){
++                      options->tags_ecc_on = 0;
++                      options->tags_ecc_overridden=1;
++              } else if (!strcmp(cur_opt, "tags-ecc-on")){
++                      options->tags_ecc_on = 1;
++                      options->tags_ecc_overridden = 1;
++              } else if (!strcmp(cur_opt, "lazy-loading-off")){
++                      options->lazy_loading_enabled = 0;
++                      options->lazy_loading_overridden=1;
++              } else if (!strcmp(cur_opt, "lazy-loading-on")){
++                      options->lazy_loading_enabled = 1;
++                      options->lazy_loading_overridden = 1;
++              } else if (!strcmp(cur_opt, "empty-lost-and-found-off")){
++                      options->empty_lost_and_found = 0;
++                      options->empty_lost_and_found_overridden=1;
++              } else if (!strcmp(cur_opt, "empty-lost-and-found-on")){
++                      options->empty_lost_and_found = 1;
++                      options->empty_lost_and_found_overridden=1;
++              } else if (!strcmp(cur_opt, "no-cache"))
++                      options->no_cache = 1;
++              else if (!strcmp(cur_opt, "no-checkpoint-read"))
++                      options->skip_checkpoint_read = 1;
++              else if (!strcmp(cur_opt, "no-checkpoint-write"))
++                      options->skip_checkpoint_write = 1;
++              else if (!strcmp(cur_opt, "no-checkpoint")) {
++                      options->skip_checkpoint_read = 1;
++                      options->skip_checkpoint_write = 1;
++              } else {
++                      printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",
++                                      cur_opt);
++                      error = 1;
++              }
++      }
++
++      return error;
++}
++
++static struct super_block *yaffs_internal_read_super(int yaffs_version,
++                                              struct super_block *sb,
++                                              void *data, int silent)
++{
++      int nBlocks;
++      struct inode *inode = NULL;
++      struct dentry *root;
++      yaffs_dev_t *dev = 0;
++      char devname_buf[BDEVNAME_SIZE + 1];
++      struct mtd_info *mtd;
++      int err;
++      char *data_str = (char *)data;
++      struct yaffs_LinuxContext *context = NULL;
++      yaffs_param_t *param;
++
++      int read_only = 0;
++
++      yaffs_options options;
++
++      unsigned mount_id;
++      int found;
++      struct yaffs_LinuxContext *context_iterator;
++      struct ylist_head *l;
++
++      sb->s_magic = YAFFS_MAGIC;
++      sb->s_op = &yaffs_super_ops;
++      sb->s_flags |= MS_NOATIME;
++
++      read_only =((sb->s_flags & MS_RDONLY) != 0);
++
++
++#ifdef YAFFS_COMPILE_EXPORTFS
++      sb->s_export_op = &yaffs_export_ops;
++#endif
++
++      if (!sb)
++              printk(KERN_INFO "yaffs: sb is NULL\n");
++      else if (!sb->s_dev)
++              printk(KERN_INFO "yaffs: sb->s_dev is NULL\n");
++      else if (!yaffs_devname(sb, devname_buf))
++              printk(KERN_INFO "yaffs: devname is NULL\n");
++      else
++              printk(KERN_INFO "yaffs: dev is %d name is \"%s\" %s\n",
++                     sb->s_dev,
++                     yaffs_devname(sb, devname_buf),
++                     read_only ? "ro" : "rw");
++
++      if (!data_str)
++              data_str = "";
++
++      printk(KERN_INFO "yaffs: passed flags \"%s\"\n", data_str);
++
++      memset(&options, 0, sizeof(options));
++
++      if (yaffs_parse_options(&options, data_str)) {
++              /* Option parsing failed */
++              return NULL;
++      }
++
++
++      sb->s_blocksize = PAGE_CACHE_SIZE;
++      sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
++
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_read_super: Using yaffs%d\n"), yaffs_version));
++      T(YAFFS_TRACE_OS,
++              (TSTR("yaffs_read_super: block size %d\n"),
++              (int)(sb->s_blocksize)));
++
++      T(YAFFS_TRACE_ALWAYS,
++              (TSTR("yaffs: Attempting MTD mount of %u.%u,\"%s\"\n"),
++             MAJOR(sb->s_dev), MINOR(sb->s_dev),
++             yaffs_devname(sb, devname_buf)));
++
++      /* Check it's an mtd device..... */
++      if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR)
++              return NULL;    /* This isn't an mtd device */
++
++      /* Get the device */
++      mtd = get_mtd_device(NULL, MINOR(sb->s_dev));
++      if (!mtd) {
++              T(YAFFS_TRACE_ALWAYS,
++                      (TSTR("yaffs: MTD device #%u doesn't appear to exist\n"),
++                      MINOR(sb->s_dev)));
++              return NULL;
++      }
++      /* Check it's NAND */
++      if (mtd->type != MTD_NANDFLASH) {
++              T(YAFFS_TRACE_ALWAYS,
++                      (TSTR("yaffs: MTD device is not NAND it's type %d\n"),
++                      mtd->type));
++              return NULL;
++      }
++
++      T(YAFFS_TRACE_OS, (TSTR(" erase %p\n"), mtd->erase));
++      T(YAFFS_TRACE_OS, (TSTR(" read %p\n"), mtd->read));
++      T(YAFFS_TRACE_OS, (TSTR(" write %p\n"), mtd->write));
++      T(YAFFS_TRACE_OS, (TSTR(" readoob %p\n"), mtd->read_oob));
++      T(YAFFS_TRACE_OS, (TSTR(" writeoob %p\n"), mtd->write_oob));
++      T(YAFFS_TRACE_OS, (TSTR(" block_isbad %p\n"), mtd->block_isbad));
++      T(YAFFS_TRACE_OS, (TSTR(" block_markbad %p\n"), mtd->block_markbad));
++      T(YAFFS_TRACE_OS, (TSTR(" %s %d\n"), WRITE_SIZE_STR, WRITE_SIZE(mtd)));
++      T(YAFFS_TRACE_OS, (TSTR(" oobsize %d\n"), mtd->oobsize));
++      T(YAFFS_TRACE_OS, (TSTR(" erasesize %d\n"), mtd->erasesize));
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
++      T(YAFFS_TRACE_OS, (TSTR(" size %u\n"), mtd->size));
++#else
++      T(YAFFS_TRACE_OS, (TSTR(" size %lld\n"), mtd->size));
++#endif
++
++#ifdef CONFIG_YAFFS_AUTO_YAFFS2
++
++      if (yaffs_version == 1 && WRITE_SIZE(mtd) >= 2048) {
++              T(YAFFS_TRACE_ALWAYS,
++                      (TSTR("yaffs: auto selecting yaffs2\n")));
++              yaffs_version = 2;
++      }
++
++      /* Added NCB 26/5/2006 for completeness */
++      if (yaffs_version == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) {
++              T(YAFFS_TRACE_ALWAYS,
++                      (TSTR("yaffs: auto selecting yaffs1\n")));
++              yaffs_version = 1;
++      }
++
++#endif
++
++      if (yaffs_version == 2) {
++              /* Check for version 2 style functions */
++              if (!mtd->erase ||
++                  !mtd->block_isbad ||
++                  !mtd->block_markbad ||
++                  !mtd->read ||
++                  !mtd->write ||
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++                  !mtd->read_oob || !mtd->write_oob) {
++#else
++                  !mtd->write_ecc ||
++                  !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) {
++#endif
++                      T(YAFFS_TRACE_ALWAYS,
++                        (TSTR("yaffs: MTD device does not support required "
++                         "functions\n")));
++                      return NULL;
++              }
++
++              if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
++                  mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) &&
++                  !options.inband_tags) {
++                      T(YAFFS_TRACE_ALWAYS,
++                        (TSTR("yaffs: MTD device does not have the "
++                         "right page sizes\n")));
++                      return NULL;
++              }
++      } else {
++              /* Check for V1 style functions */
++              if (!mtd->erase ||
++                  !mtd->read ||
++                  !mtd->write ||
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++                  !mtd->read_oob || !mtd->write_oob) {
++#else
++                  !mtd->write_ecc ||
++                  !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) {
++#endif
++                      T(YAFFS_TRACE_ALWAYS,
++                        (TSTR("yaffs: MTD device does not support required "
++                         "functions\n")));
++                      return NULL;
++              }
++
++              if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK ||
++                  mtd->oobsize != YAFFS_BYTES_PER_SPARE) {
++                      T(YAFFS_TRACE_ALWAYS,
++                        (TSTR("yaffs: MTD device does not support have the "
++                         "right page sizes\n")));
++                      return NULL;
++              }
++      }
++
++      /* OK, so if we got here, we have an MTD that's NAND and looks
++       * like it has the right capabilities
++       * Set the yaffs_dev_t up for mtd
++       */
++
++      if (!read_only && !(mtd->flags & MTD_WRITEABLE)){
++              read_only = 1;
++              printk(KERN_INFO "yaffs: mtd is read only, setting superblock read only");
++              sb->s_flags |= MS_RDONLY;
++      }
++
++      dev = kmalloc(sizeof(yaffs_dev_t), GFP_KERNEL);
++      context = kmalloc(sizeof(struct yaffs_LinuxContext),GFP_KERNEL);
++      
++      if(!dev || !context ){
++              if(dev)
++                      kfree(dev);
++              if(context)
++                      kfree(context);
++              dev = NULL;
++              context = NULL;
++      }
++
++      if (!dev) {
++              /* Deep shit could not allocate device structure */
++              T(YAFFS_TRACE_ALWAYS,
++                (TSTR("yaffs_read_super: Failed trying to allocate "
++                 "yaffs_dev_t. \n")));
++              return NULL;
++      }
++      memset(dev, 0, sizeof(yaffs_dev_t));
++      param = &(dev->param);
++
++      memset(context,0,sizeof(struct yaffs_LinuxContext));
++      dev->os_context = context;
++      YINIT_LIST_HEAD(&(context->contextList));
++      context->dev = dev;
++      context->superBlock = sb;
++
++      dev->read_only = read_only;
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++      sb->s_fs_info = dev;
++#else
++      sb->u.generic_sbp = dev;
++#endif
++      
++      dev->driver_context = mtd;
++      param->name = mtd->name;
++
++      /* Set up the memory size parameters.... */
++
++      nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK));
++
++      param->start_block = 0;
++      param->end_block = nBlocks - 1;
++      param->chunks_per_block = YAFFS_CHUNKS_PER_BLOCK;
++      param->total_bytes_per_chunk = YAFFS_BYTES_PER_CHUNK;
++      param->n_reserved_blocks = 5;
++      param->n_caches = (options.no_cache) ? 0 : 10;
++      param->inband_tags = options.inband_tags;
++
++#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD
++      param->disable_lazy_load = 1;
++#endif
++#ifdef CONFIG_YAFFS_XATTR
++      param->enable_xattr = 1;
++#endif
++      if(options.lazy_loading_overridden)
++              param->disable_lazy_load = !options.lazy_loading_enabled;
++
++#ifdef CONFIG_YAFFS_DISABLE_TAGS_ECC
++      param->no_tags_ecc = 1;
++#endif
++
++#ifdef CONFIG_YAFFS_DISABLE_BACKGROUND
++#else
++      param->defered_dir_update = 1;
++#endif
++
++      if(options.tags_ecc_overridden)
++              param->no_tags_ecc = !options.tags_ecc_on;
++
++#ifdef CONFIG_YAFFS_EMPTY_LOST_AND_FOUND
++      param->empty_lost_n_found = 1;
++#endif
++
++#ifdef CONFIG_YAFFS_DISABLE_BLOCK_REFRESHING
++      param->refresh_period = 0;
++#else
++      param->refresh_period = 500;
++#endif
++
++#ifdef CONFIG_YAFFS__ALWAYS_CHECK_CHUNK_ERASED
++      param->always_check_erased = 1;
++#endif
++
++      if(options.empty_lost_and_found_overridden)
++              param->empty_lost_n_found = options.empty_lost_and_found;
++
++      /* ... and the functions. */
++      if (yaffs_version == 2) {
++              param->write_chunk_tags_fn =
++                  nandmtd2_WriteChunkWithTagsToNAND;
++              param->read_chunk_tags_fn =
++                  nandmtd2_ReadChunkWithTagsFromNAND;
++              param->bad_block_fn = nandmtd2_MarkNANDBlockBad;
++              param->query_block_fn = nandmtd2_QueryNANDBlock;
++              yaffs_dev_to_lc(dev)->spareBuffer = YMALLOC(mtd->oobsize);
++              param->is_yaffs2 = 1;
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++              param->total_bytes_per_chunk = mtd->writesize;
++              param->chunks_per_block = mtd->erasesize / mtd->writesize;
++#else
++              param->total_bytes_per_chunk = mtd->oobblock;
++              param->chunks_per_block = mtd->erasesize / mtd->oobblock;
++#endif
++              nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize);
++
++              param->start_block = 0;
++              param->end_block = nBlocks - 1;
++      } else {
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++              /* use the MTD interface in yaffs_mtdif1.c */
++              param->write_chunk_tags_fn =
++                      nandmtd1_WriteChunkWithTagsToNAND;
++              param->read_chunk_tags_fn =
++                      nandmtd1_ReadChunkWithTagsFromNAND;
++              param->bad_block_fn = nandmtd1_MarkNANDBlockBad;
++              param->query_block_fn = nandmtd1_QueryNANDBlock;
++#else
++              param->write_chunk_fn = nandmtd_WriteChunkToNAND;
++              param->read_chunk_fn = nandmtd_ReadChunkFromNAND;
++#endif
++              param->is_yaffs2 = 0;
++      }
++      /* ... and common functions */
++      param->erase_fn = nandmtd_EraseBlockInNAND;
++      param->initialise_flash_fn = nandmtd_InitialiseNAND;
++
++      yaffs_dev_to_lc(dev)->putSuperFunc = yaffs_MTDPutSuper;
++
++      param->sb_dirty_fn = yaffs_touch_super;
++      param->gc_control = yaffs_gc_control_callback;
++
++      yaffs_dev_to_lc(dev)->superBlock= sb;
++      
++
++#ifndef CONFIG_YAFFS_DOES_ECC
++      param->use_nand_ecc = 1;
++#endif
++
++#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES
++      param->wide_tnodes_disabled = 1;
++#endif
++
++      param->skip_checkpt_rd = options.skip_checkpoint_read;
++      param->skip_checkpt_wr = options.skip_checkpoint_write;
++
++      down(&yaffs_context_lock);
++      /* Get a mount id */
++      found = 0;
++      for(mount_id=0; ! found; mount_id++){
++              found = 1;
++              ylist_for_each(l,&yaffs_context_list){
++                      context_iterator = ylist_entry(l,struct yaffs_LinuxContext,contextList);
++                      if(context_iterator->mount_id == mount_id)
++                              found = 0;
++              }
++      }
++      context->mount_id = mount_id;
++
++      ylist_add_tail(&(yaffs_dev_to_lc(dev)->contextList), &yaffs_context_list);
++      up(&yaffs_context_lock);
++
++        /* Directory search handling...*/
++        YINIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->searchContexts));
++        param->remove_obj_fn = yaffs_remove_obj_callback;
++
++      init_MUTEX(&(yaffs_dev_to_lc(dev)->grossLock));
++
++      yaffs_gross_lock(dev);
++
++      err = yaffs_guts_initialise(dev);
++
++      T(YAFFS_TRACE_OS,
++        (TSTR("yaffs_read_super: guts initialised %s\n"),
++         (err == YAFFS_OK) ? "OK" : "FAILED"));
++         
++      if(err == YAFFS_OK)
++              yaffs_bg_start(dev);
++              
++      if(!context->bgThread)
++              param->defered_dir_update = 0;
++
++
++      /* Release lock before yaffs_get_inode() */
++      yaffs_gross_unlock(dev);
++
++      /* Create root inode */
++      if (err == YAFFS_OK)
++              inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0,
++                                      yaffs_root(dev));
++
++      if (!inode)
++              return NULL;
++
++      inode->i_op = &yaffs_dir_inode_operations;
++      inode->i_fop = &yaffs_dir_operations;
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: got root inode\n")));
++
++      root = d_alloc_root(inode);
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: d_alloc_root done\n")));
++
++      if (!root) {
++              iput(inode);
++              return NULL;
++      }
++      sb->s_root = root;
++      sb->s_dirt = !dev->is_checkpointed;
++      T(YAFFS_TRACE_ALWAYS,
++              (TSTR("yaffs_read_super: is_checkpointed %d\n"),
++              dev->is_checkpointed));
++
++      T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: done\n")));
++      return sb;
++}
++
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data,
++                                       int silent)
++{
++      return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL;
++}
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++static int yaffs_read_super(struct file_system_type *fs,
++                          int flags, const char *dev_name,
++                          void *data, struct vfsmount *mnt)
++{
++
++      return get_sb_bdev(fs, flags, dev_name, data,
++                         yaffs_internal_read_super_mtd, mnt);
++}
++#else
++static struct super_block *yaffs_read_super(struct file_system_type *fs,
++                                          int flags, const char *dev_name,
++                                          void *data)
++{
++
++      return get_sb_bdev(fs, flags, dev_name, data,
++                         yaffs_internal_read_super_mtd);
++}
++#endif
++
++static struct file_system_type yaffs_fs_type = {
++      .owner = THIS_MODULE,
++      .name = "yaffs",
++      .get_sb = yaffs_read_super,
++      .kill_sb = kill_block_super,
++      .fs_flags = FS_REQUIRES_DEV,
++};
++#else
++static struct super_block *yaffs_read_super(struct super_block *sb, void *data,
++                                          int silent)
++{
++      return yaffs_internal_read_super(1, sb, data, silent);
++}
++
++static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super,
++                    FS_REQUIRES_DEV);
++#endif
++
++
++#ifdef CONFIG_YAFFS_YAFFS2
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data,
++                                        int silent)
++{
++      return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL;
++}
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
++static int yaffs2_read_super(struct file_system_type *fs,
++                      int flags, const char *dev_name, void *data,
++                      struct vfsmount *mnt)
++{
++      return get_sb_bdev(fs, flags, dev_name, data,
++                      yaffs2_internal_read_super_mtd, mnt);
++}
++#else
++static struct super_block *yaffs2_read_super(struct file_system_type *fs,
++                                           int flags, const char *dev_name,
++                                           void *data)
++{
++
++      return get_sb_bdev(fs, flags, dev_name, data,
++                         yaffs2_internal_read_super_mtd);
++}
++#endif
++
++static struct file_system_type yaffs2_fs_type = {
++      .owner = THIS_MODULE,
++      .name = "yaffs2",
++      .get_sb = yaffs2_read_super,
++      .kill_sb = kill_block_super,
++      .fs_flags = FS_REQUIRES_DEV,
++};
++#else
++static struct super_block *yaffs2_read_super(struct super_block *sb,
++                                           void *data, int silent)
++{
++      return yaffs_internal_read_super(2, sb, data, silent);
++}
++
++static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super,
++                    FS_REQUIRES_DEV);
++#endif
++
++#endif                                /* CONFIG_YAFFS_YAFFS2 */
++
++static struct proc_dir_entry *my_proc_entry;
++static struct proc_dir_entry *debug_proc_entry;
++
++static char *yaffs_dump_dev_part0(char *buf, yaffs_dev_t * dev)
++{
++      buf += sprintf(buf, "start_block.......... %d\n", dev->param.start_block);
++      buf += sprintf(buf, "end_block............ %d\n", dev->param.end_block);
++      buf += sprintf(buf, "total_bytes_per_chunk %d\n", dev->param.total_bytes_per_chunk);
++      buf += sprintf(buf, "use_nand_ecc......... %d\n", dev->param.use_nand_ecc);
++      buf += sprintf(buf, "no_tags_ecc.......... %d\n", dev->param.no_tags_ecc);
++      buf += sprintf(buf, "is_yaffs2............ %d\n", dev->param.is_yaffs2);
++      buf += sprintf(buf, "inband_tags.......... %d\n", dev->param.inband_tags);
++      buf += sprintf(buf, "empty_lost_n_found... %d\n", dev->param.empty_lost_n_found);
++      buf += sprintf(buf, "disable_lazy_load.... %d\n", dev->param.disable_lazy_load);
++      buf += sprintf(buf, "refresh_period....... %d\n", dev->param.refresh_period);
++      buf += sprintf(buf, "n_caches............. %d\n", dev->param.n_caches);
++      buf += sprintf(buf, "n_reserved_blocks.... %d\n", dev->param.n_reserved_blocks);
++      buf += sprintf(buf, "always_check_erased.. %d\n", dev->param.always_check_erased);
++
++      buf += sprintf(buf, "\n");
++
++      return buf;
++}
++
++
++static char *yaffs_dump_dev_part1(char *buf, yaffs_dev_t * dev)
++{
++      buf += sprintf(buf, "data_bytes_per_chunk. %d\n", dev->data_bytes_per_chunk);
++      buf += sprintf(buf, "chunk_grp_bits....... %d\n", dev->chunk_grp_bits);
++      buf += sprintf(buf, "chunk_grp_size....... %d\n", dev->chunk_grp_size);
++      buf += sprintf(buf, "n_erased_blocks...... %d\n", dev->n_erased_blocks);
++      buf += sprintf(buf, "blocks_in_checkpt.... %d\n", dev->blocks_in_checkpt);
++      buf += sprintf(buf, "\n");
++      buf += sprintf(buf, "n_tnodes............. %d\n", dev->n_tnodes);
++      buf += sprintf(buf, "n_obj................ %d\n", dev->n_obj);
++      buf += sprintf(buf, "n_free_chunks........ %d\n", dev->n_free_chunks);
++      buf += sprintf(buf, "\n");
++      buf += sprintf(buf, "n_page_writes........ %u\n", dev->n_page_writes);
++      buf += sprintf(buf, "n_page_reads......... %u\n", dev->n_page_reads);
++      buf += sprintf(buf, "n_erasures........... %u\n", dev->n_erasures);
++      buf += sprintf(buf, "n_gc_copies.......... %u\n", dev->n_gc_copies);
++      buf += sprintf(buf, "all_gcs.............. %u\n", dev->all_gcs);
++      buf += sprintf(buf, "passive_gc_count..... %u\n", dev->passive_gc_count);
++      buf += sprintf(buf, "oldest_dirty_gc_count %u\n", dev->oldest_dirty_gc_count);
++      buf += sprintf(buf, "n_gc_blocks.......... %u\n", dev->n_gc_blocks);
++      buf += sprintf(buf, "bg_gcs............... %u\n", dev->bg_gcs);
++      buf += sprintf(buf, "n_retired_writes..... %u\n", dev->n_retired_writes);
++      buf += sprintf(buf, "nRetireBlocks........ %u\n", dev->n_retired_blocks);
++      buf += sprintf(buf, "n_ecc_fixed.......... %u\n", dev->n_ecc_fixed);
++      buf += sprintf(buf, "n_ecc_unfixed........ %u\n", dev->n_ecc_unfixed);
++      buf += sprintf(buf, "n_tags_ecc_fixed..... %u\n", dev->n_tags_ecc_fixed);
++      buf += sprintf(buf, "n_tags_ecc_unfixed... %u\n", dev->n_tags_ecc_unfixed);
++      buf += sprintf(buf, "cache_hits........... %u\n", dev->cache_hits);
++      buf += sprintf(buf, "n_deleted_files...... %u\n", dev->n_deleted_files);
++      buf += sprintf(buf, "n_unlinked_files..... %u\n", dev->n_unlinked_files);
++      buf += sprintf(buf, "refresh_count........ %u\n", dev->refresh_count);
++      buf += sprintf(buf, "n_bg_deletions....... %u\n", dev->n_bg_deletions);
++
++      return buf;
++}
++
++static int yaffs_proc_read(char *page,
++                         char **start,
++                         off_t offset, int count, int *eof, void *data)
++{
++      struct ylist_head *item;
++      char *buf = page;
++      int step = offset;
++      int n = 0;
++
++      /* Get proc_file_read() to step 'offset' by one on each sucessive call.
++       * We use 'offset' (*ppos) to indicate where we are in dev_list.
++       * This also assumes the user has posted a read buffer large
++       * enough to hold the complete output; but that's life in /proc.
++       */
++
++      *(int *)start = 1;
++
++      /* Print header first */
++      if (step == 0)
++              buf += sprintf(buf, "Multi-version YAFFS built:" __DATE__ " " __TIME__"\n");
++      else if (step == 1)
++              buf += sprintf(buf,"\n");
++      else {
++              step-=2;
++              
++              down(&yaffs_context_lock);
++
++              /* Locate and print the Nth entry.  Order N-squared but N is small. */
++              ylist_for_each(item, &yaffs_context_list) {
++                      struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList);
++                      yaffs_dev_t *dev = dc->dev;
++
++                      if (n < (step & ~1)) {
++                              n+=2;
++                              continue;
++                      }
++                      if((step & 1)==0){
++                              buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->param.name);
++                              buf = yaffs_dump_dev_part0(buf, dev);
++                      } else
++                              buf = yaffs_dump_dev_part1(buf, dev);
++                      
++                      break;
++              }
++              up(&yaffs_context_lock);
++      }
++
++      return buf - page < count ? buf - page : count;
++}
++
++static int yaffs_stats_proc_read(char *page,
++                              char **start,
++                              off_t offset, int count, int *eof, void *data)
++{
++      struct ylist_head *item;
++      char *buf = page;
++      int n = 0;
++
++      down(&yaffs_context_lock);
++
++      /* Locate and print the Nth entry.  Order N-squared but N is small. */
++      ylist_for_each(item, &yaffs_context_list) {
++              struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList);
++              yaffs_dev_t *dev = dc->dev;
++
++              int erasedChunks;
++
++              erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block;
++              
++              buf += sprintf(buf,"%d, %d, %d, %u, %u, %u, %u\n",
++                              n, dev->n_free_chunks, erasedChunks,
++                              dev->bg_gcs, dev->oldest_dirty_gc_count,
++                              dev->n_obj, dev->n_tnodes);
++      }
++      up(&yaffs_context_lock);
++
++
++      return buf - page < count ? buf - page : count;
++}
++
++/**
++ * Set the verbosity of the warnings and error messages.
++ *
++ * Note that the names can only be a..z or _ with the current code.
++ */
++
++static struct {
++      char *mask_name;
++      unsigned mask_bitfield;
++} mask_flags[] = {
++      {"allocate", YAFFS_TRACE_ALLOCATE},
++      {"always", YAFFS_TRACE_ALWAYS},
++      {"background", YAFFS_TRACE_BACKGROUND},
++      {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS},
++      {"buffers", YAFFS_TRACE_BUFFERS},
++      {"bug", YAFFS_TRACE_BUG},
++      {"checkpt", YAFFS_TRACE_CHECKPOINT},
++      {"deletion", YAFFS_TRACE_DELETION},
++      {"erase", YAFFS_TRACE_ERASE},
++      {"error", YAFFS_TRACE_ERROR},
++      {"gc_detail", YAFFS_TRACE_GC_DETAIL},
++      {"gc", YAFFS_TRACE_GC},
++      {"lock", YAFFS_TRACE_LOCK},
++      {"mtd", YAFFS_TRACE_MTD},
++      {"nandaccess", YAFFS_TRACE_NANDACCESS},
++      {"os", YAFFS_TRACE_OS},
++      {"scan_debug", YAFFS_TRACE_SCAN_DEBUG},
++      {"scan", YAFFS_TRACE_SCAN},
++      {"tracing", YAFFS_TRACE_TRACING},
++      {"sync", YAFFS_TRACE_SYNC},
++      {"write", YAFFS_TRACE_WRITE},
++
++      {"verify", YAFFS_TRACE_VERIFY},
++      {"verify_nand", YAFFS_TRACE_VERIFY_NAND},
++      {"verify_full", YAFFS_TRACE_VERIFY_FULL},
++      {"verify_all", YAFFS_TRACE_VERIFY_ALL},
++
++      {"all", 0xffffffff},
++      {"none", 0},
++      {NULL, 0},
++};
++
++#define MAX_MASK_NAME_LENGTH 40
++static int yaffs_proc_write_trace_options(struct file *file, const char *buf,
++                                       unsigned long count, void *data)
++{
++      unsigned rg = 0, mask_bitfield;
++      char *end;
++      char *mask_name;
++      const char *x;
++      char substring[MAX_MASK_NAME_LENGTH + 1];
++      int i;
++      int done = 0;
++      int add, len = 0;
++      int pos = 0;
++
++      rg = yaffs_trace_mask;
++
++      while (!done && (pos < count)) {
++              done = 1;
++              while ((pos < count) && isspace(buf[pos]))
++                      pos++;
++
++              switch (buf[pos]) {
++              case '+':
++              case '-':
++              case '=':
++                      add = buf[pos];
++                      pos++;
++                      break;
++
++              default:
++                      add = ' ';
++                      break;
++              }
++              mask_name = NULL;
++
++              mask_bitfield = simple_strtoul(buf + pos, &end, 0);
++
++              if (end > buf + pos) {
++                      mask_name = "numeral";
++                      len = end - (buf + pos);
++                      pos += len;
++                      done = 0;
++              } else {
++                      for (x = buf + pos, i = 0;
++                          (*x == '_' || (*x >= 'a' && *x <= 'z')) &&
++                          i < MAX_MASK_NAME_LENGTH; x++, i++, pos++)
++                              substring[i] = *x;
++                      substring[i] = '\0';
++
++                      for (i = 0; mask_flags[i].mask_name != NULL; i++) {
++                              if (strcmp(substring, mask_flags[i].mask_name) == 0) {
++                                      mask_name = mask_flags[i].mask_name;
++                                      mask_bitfield = mask_flags[i].mask_bitfield;
++                                      done = 0;
++                                      break;
++                              }
++                      }
++              }
++
++              if (mask_name != NULL) {
++                      done = 0;
++                      switch (add) {
++                      case '-':
++                              rg &= ~mask_bitfield;
++                              break;
++                      case '+':
++                              rg |= mask_bitfield;
++                              break;
++                      case '=':
++                              rg = mask_bitfield;
++                              break;
++                      default:
++                              rg |= mask_bitfield;
++                              break;
++                      }
++              }
++      }
++
++      yaffs_trace_mask = rg | YAFFS_TRACE_ALWAYS;
++
++      printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_trace_mask);
++
++      if (rg & YAFFS_TRACE_ALWAYS) {
++              for (i = 0; mask_flags[i].mask_name != NULL; i++) {
++                      char flag;
++                      flag = ((rg & mask_flags[i].mask_bitfield) ==
++                              mask_flags[i].mask_bitfield) ? '+' : '-';
++                      printk(KERN_DEBUG "%c%s\n", flag, mask_flags[i].mask_name);
++              }
++      }
++
++      return count;
++}
++
++
++static int yaffs_proc_write(struct file *file, const char *buf,
++                                       unsigned long count, void *data)
++{
++        return yaffs_proc_write_trace_options(file, buf, count, data);
++}
++
++/* Stuff to handle installation of file systems */
++struct file_system_to_install {
++      struct file_system_type *fst;
++      int installed;
++};
++
++static struct file_system_to_install fs_to_install[] = {
++      {&yaffs_fs_type, 0},
++      {&yaffs2_fs_type, 0},
++      {NULL, 0}
++};
++
++static int __init init_yaffs_fs(void)
++{
++      int error = 0;
++      struct file_system_to_install *fsinst;
++
++      T(YAFFS_TRACE_ALWAYS,
++        (TSTR("yaffs built " __DATE__ " " __TIME__ " Installing. \n")));
++
++#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED
++      T(YAFFS_TRACE_ALWAYS,
++        (TSTR(" \n\n\n\nYAFFS-WARNING CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED selected.\n\n\n\n")));
++#endif
++
++
++
++
++      init_MUTEX(&yaffs_context_lock);
++
++      /* Install the proc_fs entries */
++      my_proc_entry = create_proc_entry("yaffs",
++                                             S_IRUGO | S_IFREG,
++                                             YPROC_ROOT);
++
++      if (my_proc_entry) {
++              my_proc_entry->write_proc = yaffs_proc_write;
++              my_proc_entry->read_proc = yaffs_proc_read;
++              my_proc_entry->data = NULL;
++      } else
++              return -ENOMEM;
++
++      debug_proc_entry = create_proc_entry("yaffs_stats",
++                                             S_IRUGO | S_IFREG,
++                                             YPROC_ROOT);
++
++      if (debug_proc_entry) {
++              debug_proc_entry->write_proc = NULL;
++              debug_proc_entry->read_proc = yaffs_stats_proc_read;
++              debug_proc_entry->data = NULL;
++      } else
++              return -ENOMEM;
++
++      /* Now add the file system entries */
++
++      fsinst = fs_to_install;
++
++      while (fsinst->fst && !error) {
++              error = register_filesystem(fsinst->fst);
++              if (!error)
++                      fsinst->installed = 1;
++              fsinst++;
++      }
++
++      /* Any errors? uninstall  */
++      if (error) {
++              fsinst = fs_to_install;
++
++              while (fsinst->fst) {
++                      if (fsinst->installed) {
++                              unregister_filesystem(fsinst->fst);
++                              fsinst->installed = 0;
++                      }
++                      fsinst++;
++              }
++      }
++
++      return error;
++}
++
++static void __exit exit_yaffs_fs(void)
++{
++
++      struct file_system_to_install *fsinst;
++
++      T(YAFFS_TRACE_ALWAYS,
++              (TSTR("yaffs built " __DATE__ " " __TIME__ " removing. \n")));
++
++      remove_proc_entry("yaffs", YPROC_ROOT);
++      remove_proc_entry("yaffs_stats", YPROC_ROOT);
++
++      fsinst = fs_to_install;
++
++      while (fsinst->fst) {
++              if (fsinst->installed) {
++                      unregister_filesystem(fsinst->fst);
++                      fsinst->installed = 0;
++              }
++              fsinst++;
++      }
++}
++
++module_init(init_yaffs_fs)
++module_exit(exit_yaffs_fs)
++
++MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system");
++MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2010");
++MODULE_LICENSE("GPL");
+--- /dev/null
++++ b/fs/yaffs2/yaffs_yaffs1.c
+@@ -0,0 +1,465 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++#include "yaffs_yaffs1.h"
++#include "yportenv.h"
++#include "yaffs_trace.h"
++#include "yaffs_bitmap.h"
++#include "yaffs_getblockinfo.h"
++#include "yaffs_nand.h"
++
++
++int yaffs1_scan(yaffs_dev_t *dev)
++{
++      yaffs_ext_tags tags;
++      int blk;
++      int blockIterator;
++      int startIterator;
++      int endIterator;
++      int result;
++
++      int chunk;
++      int c;
++      int deleted;
++      yaffs_block_state_t state;
++      yaffs_obj_t *hard_list = NULL;
++      yaffs_block_info_t *bi;
++      __u32 seq_number;
++      yaffs_obj_header *oh;
++      yaffs_obj_t *in;
++      yaffs_obj_t *parent;
++
++      int alloc_failed = 0;
++
++      struct yaffs_shadow_fixer_s *shadowFixerList = NULL;
++
++
++      __u8 *chunkData;
++
++
++
++      T(YAFFS_TRACE_SCAN,
++        (TSTR("yaffs1_scan starts  intstartblk %d intendblk %d..." TENDSTR),
++         dev->internal_start_block, dev->internal_end_block));
++
++      chunkData = yaffs_get_temp_buffer(dev, __LINE__);
++
++      dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER;
++
++      /* Scan all the blocks to determine their state */
++      bi = dev->block_info;
++      for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) {
++              yaffs_clear_chunk_bits(dev, blk);
++              bi->pages_in_use = 0;
++              bi->soft_del_pages = 0;
++
++              yaffs_query_init_block_state(dev, blk, &state, &seq_number);
++
++              bi->block_state = state;
++              bi->seq_number = seq_number;
++
++              if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK)
++                      bi->block_state = state = YAFFS_BLOCK_STATE_DEAD;
++
++              T(YAFFS_TRACE_SCAN_DEBUG,
++                (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
++                 state, seq_number));
++
++              if (state == YAFFS_BLOCK_STATE_DEAD) {
++                      T(YAFFS_TRACE_BAD_BLOCKS,
++                        (TSTR("block %d is bad" TENDSTR), blk));
++              } else if (state == YAFFS_BLOCK_STATE_EMPTY) {
++                      T(YAFFS_TRACE_SCAN_DEBUG,
++                        (TSTR("Block empty " TENDSTR)));
++                      dev->n_erased_blocks++;
++                      dev->n_free_chunks += dev->param.chunks_per_block;
++              }
++              bi++;
++      }
++
++      startIterator = dev->internal_start_block;
++      endIterator = dev->internal_end_block;
++
++      /* For each block.... */
++      for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator;
++           blockIterator++) {
++
++              YYIELD();
++
++              YYIELD();
++
++              blk = blockIterator;
++
++              bi = yaffs_get_block_info(dev, blk);
++              state = bi->block_state;
++
++              deleted = 0;
++
++              /* For each chunk in each block that needs scanning....*/
++              for (c = 0; !alloc_failed && c < dev->param.chunks_per_block &&
++                   state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) {
++                      /* Read the tags and decide what to do */
++                      chunk = blk * dev->param.chunks_per_block + c;
++
++                      result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL,
++                                                      &tags);
++
++                      /* Let's have a good look at this chunk... */
++
++                      if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED || tags.is_deleted) {
++                              /* YAFFS1 only...
++                               * A deleted chunk
++                               */
++                              deleted++;
++                              dev->n_free_chunks++;
++                              /*T((" %d %d deleted\n",blk,c)); */
++                      } else if (!tags.chunk_used) {
++                              /* An unassigned chunk in the block
++                               * This means that either the block is empty or
++                               * this is the one being allocated from
++                               */
++
++                              if (c == 0) {
++                                      /* We're looking at the first chunk in the block so the block is unused */
++                                      state = YAFFS_BLOCK_STATE_EMPTY;
++                                      dev->n_erased_blocks++;
++                              } else {
++                                      /* this is the block being allocated from */
++                                      T(YAFFS_TRACE_SCAN,
++                                        (TSTR
++                                         (" Allocating from %d %d" TENDSTR),
++                                         blk, c));
++                                      state = YAFFS_BLOCK_STATE_ALLOCATING;
++                                      dev->alloc_block = blk;
++                                      dev->alloc_page = c;
++                                      dev->alloc_block_finder = blk;
++                                      /* Set block finder here to encourage the allocator to go forth from here. */
++
++                              }
++
++                              dev->n_free_chunks += (dev->param.chunks_per_block - c);
++                      } else if (tags.chunk_id > 0) {
++                              /* chunk_id > 0 so it is a data chunk... */
++                              unsigned int endpos;
++
++                              yaffs_set_chunk_bit(dev, blk, c);
++                              bi->pages_in_use++;
++
++                              in = yaffs_find_or_create_by_number(dev,
++                                                                    tags.
++                                                                    obj_id,
++                                                                    YAFFS_OBJECT_TYPE_FILE);
++                              /* PutChunkIntoFile checks for a clash (two data chunks with
++                               * the same chunk_id).
++                               */
++
++                              if (!in)
++                                      alloc_failed = 1;
++
++                              if (in) {
++                                      if (!yaffs_put_chunk_in_file(in, tags.chunk_id, chunk, 1))
++                                              alloc_failed = 1;
++                              }
++
++                              endpos =
++                                  (tags.chunk_id - 1) * dev->data_bytes_per_chunk +
++                                  tags.n_bytes;
++                              if (in &&
++                                  in->variant_type == YAFFS_OBJECT_TYPE_FILE
++                                  && in->variant.file_variant.scanned_size <
++                                  endpos) {
++                                      in->variant.file_variant.
++                                          scanned_size = endpos;
++                                      if (!dev->param.use_header_file_size) {
++                                              in->variant.file_variant.
++                                                  file_size =
++                                                  in->variant.file_variant.
++                                                  scanned_size;
++                                      }
++
++                              }
++                              /* T((" %d %d data %d %d\n",blk,c,tags.obj_id,tags.chunk_id));   */
++                      } else {
++                              /* chunk_id == 0, so it is an ObjectHeader.
++                               * Thus, we read in the object header and make the object
++                               */
++                              yaffs_set_chunk_bit(dev, blk, c);
++                              bi->pages_in_use++;
++
++                              result = yaffs_rd_chunk_tags_nand(dev, chunk,
++                                                              chunkData,
++                                                              NULL);
++
++                              oh = (yaffs_obj_header *) chunkData;
++
++                              in = yaffs_find_by_number(dev,
++                                                            tags.obj_id);
++                              if (in && in->variant_type != oh->type) {
++                                      /* This should not happen, but somehow
++                                       * Wev'e ended up with an obj_id that has been reused but not yet
++                                       * deleted, and worse still it has changed type. Delete the old object.
++                                       */
++
++                                      yaffs_del_obj(in);
++
++                                      in = 0;
++                              }
++
++                              in = yaffs_find_or_create_by_number(dev,
++                                                                    tags.
++                                                                    obj_id,
++                                                                    oh->type);
++
++                              if (!in)
++                                      alloc_failed = 1;
++
++                              if (in && oh->shadows_obj > 0) {
++
++                                      struct yaffs_shadow_fixer_s *fixer;
++                                      fixer = YMALLOC(sizeof(struct yaffs_shadow_fixer_s));
++                                      if (fixer) {
++                                              fixer->next = shadowFixerList;
++                                              shadowFixerList = fixer;
++                                              fixer->obj_id = tags.obj_id;
++                                              fixer->shadowed_id = oh->shadows_obj;
++                                              T(YAFFS_TRACE_SCAN,
++                                                (TSTR
++                                                 (" Shadow fixer: %d shadows %d" TENDSTR),
++                                                 fixer->obj_id, fixer->shadowed_id));
++
++                                      }
++
++                              }
++
++                              if (in && in->valid) {
++                                      /* We have already filled this one. We have a duplicate and need to resolve it. */
++
++                                      unsigned existingSerial = in->serial;
++                                      unsigned newSerial = tags.serial_number;
++
++                                      if (((existingSerial + 1) & 3) == newSerial) {
++                                              /* Use new one - destroy the exisiting one */
++                                              yaffs_chunk_del(dev,
++                                                                in->hdr_chunk,
++                                                                1, __LINE__);
++                                              in->valid = 0;
++                                      } else {
++                                              /* Use existing - destroy this one. */
++                                              yaffs_chunk_del(dev, chunk, 1,
++                                                                __LINE__);
++                                      }
++                              }
++
++                              if (in && !in->valid &&
++                                  (tags.obj_id == YAFFS_OBJECTID_ROOT ||
++                                   tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND)) {
++                                      /* We only load some info, don't fiddle with directory structure */
++                                      in->valid = 1;
++                                      in->variant_type = oh->type;
++
++                                      in->yst_mode = oh->yst_mode;
++#ifdef CONFIG_YAFFS_WINCE
++                                      in->win_atime[0] = oh->win_atime[0];
++                                      in->win_ctime[0] = oh->win_ctime[0];
++                                      in->win_mtime[0] = oh->win_mtime[0];
++                                      in->win_atime[1] = oh->win_atime[1];
++                                      in->win_ctime[1] = oh->win_ctime[1];
++                                      in->win_mtime[1] = oh->win_mtime[1];
++#else
++                                      in->yst_uid = oh->yst_uid;
++                                      in->yst_gid = oh->yst_gid;
++                                      in->yst_atime = oh->yst_atime;
++                                      in->yst_mtime = oh->yst_mtime;
++                                      in->yst_ctime = oh->yst_ctime;
++                                      in->yst_rdev = oh->yst_rdev;
++#endif
++                                      in->hdr_chunk = chunk;
++                                      in->serial = tags.serial_number;
++
++                              } else if (in && !in->valid) {
++                                      /* we need to load this info */
++
++                                      in->valid = 1;
++                                      in->variant_type = oh->type;
++
++                                      in->yst_mode = oh->yst_mode;
++#ifdef CONFIG_YAFFS_WINCE
++                                      in->win_atime[0] = oh->win_atime[0];
++                                      in->win_ctime[0] = oh->win_ctime[0];
++                                      in->win_mtime[0] = oh->win_mtime[0];
++                                      in->win_atime[1] = oh->win_atime[1];
++                                      in->win_ctime[1] = oh->win_ctime[1];
++                                      in->win_mtime[1] = oh->win_mtime[1];
++#else
++                                      in->yst_uid = oh->yst_uid;
++                                      in->yst_gid = oh->yst_gid;
++                                      in->yst_atime = oh->yst_atime;
++                                      in->yst_mtime = oh->yst_mtime;
++                                      in->yst_ctime = oh->yst_ctime;
++                                      in->yst_rdev = oh->yst_rdev;
++#endif
++                                      in->hdr_chunk = chunk;
++                                      in->serial = tags.serial_number;
++
++                                      yaffs_set_obj_name_from_oh(in, oh);
++                                      in->dirty = 0;
++
++                                      /* directory stuff...
++                                       * hook up to parent
++                                       */
++
++                                      parent =
++                                          yaffs_find_or_create_by_number
++                                          (dev, oh->parent_obj_id,
++                                           YAFFS_OBJECT_TYPE_DIRECTORY);
++                                      if (!parent)
++                                              alloc_failed = 1;
++                                      if (parent && parent->variant_type ==
++                                          YAFFS_OBJECT_TYPE_UNKNOWN) {
++                                              /* Set up as a directory */
++                                              parent->variant_type =
++                                                      YAFFS_OBJECT_TYPE_DIRECTORY;
++                                              YINIT_LIST_HEAD(&parent->variant.
++                                                              dir_variant.
++                                                              children);
++                                      } else if (!parent || parent->variant_type !=
++                                                 YAFFS_OBJECT_TYPE_DIRECTORY) {
++                                              /* Hoosterman, another problem....
++                                               * We're trying to use a non-directory as a directory
++                                               */
++
++                                              T(YAFFS_TRACE_ERROR,
++                                                (TSTR
++                                                 ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
++                                                  TENDSTR)));
++                                              parent = dev->lost_n_found;
++                                      }
++
++                                      yaffs_add_obj_to_dir(parent, in);
++
++                                      if (0 && (parent == dev->del_dir ||
++                                                parent == dev->unlinked_dir)) {
++                                              in->deleted = 1;        /* If it is unlinked at start up then it wants deleting */
++                                              dev->n_deleted_files++;
++                                      }
++                                      /* Note re hardlinks.
++                                       * Since we might scan a hardlink before its equivalent object is scanned
++                                       * we put them all in a list.
++                                       * After scanning is complete, we should have all the objects, so we run through this
++                                       * list and fix up all the chains.
++                                       */
++
++                                      switch (in->variant_type) {
++                                      case YAFFS_OBJECT_TYPE_UNKNOWN:
++                                              /* Todo got a problem */
++                                              break;
++                                      case YAFFS_OBJECT_TYPE_FILE:
++                                              if (dev->param.use_header_file_size)
++
++                                                      in->variant.file_variant.
++                                                          file_size =
++                                                          oh->file_size;
++
++                                              break;
++                                      case YAFFS_OBJECT_TYPE_HARDLINK:
++                                              in->variant.hardlink_variant.
++                                                      equiv_id =
++                                                      oh->equiv_id;
++                                              in->hard_links.next =
++                                                      (struct ylist_head *)
++                                                      hard_list;
++                                              hard_list = in;
++                                              break;
++                                      case YAFFS_OBJECT_TYPE_DIRECTORY:
++                                              /* Do nothing */
++                                              break;
++                                      case YAFFS_OBJECT_TYPE_SPECIAL:
++                                              /* Do nothing */
++                                              break;
++                                      case YAFFS_OBJECT_TYPE_SYMLINK:
++                                              in->variant.symlink_variant.alias =
++                                                  yaffs_clone_str(oh->alias);
++                                              if (!in->variant.symlink_variant.alias)
++                                                      alloc_failed = 1;
++                                              break;
++                                      }
++
++                              }
++                      }
++              }
++
++              if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
++                      /* If we got this far while scanning, then the block is fully allocated.*/
++                      state = YAFFS_BLOCK_STATE_FULL;
++              }
++
++              if (state == YAFFS_BLOCK_STATE_ALLOCATING) {
++                      /* If the block was partially allocated then treat it as fully allocated.*/
++                      state = YAFFS_BLOCK_STATE_FULL;
++                      dev->alloc_block = -1;
++              }
++
++              bi->block_state = state;
++
++              /* Now let's see if it was dirty */
++              if (bi->pages_in_use == 0 &&
++                  !bi->has_shrink_hdr &&
++                  bi->block_state == YAFFS_BLOCK_STATE_FULL) {
++                      yaffs_block_became_dirty(dev, blk);
++              }
++
++      }
++
++
++      /* Ok, we've done all the scanning.
++       * Fix up the hard link chains.
++       * We should now have scanned all the objects, now it's time to add these
++       * hardlinks.
++       */
++
++      yaffs_link_fixup(dev, hard_list);
++
++      /* Fix up any shadowed objects */
++      {
++              struct yaffs_shadow_fixer_s *fixer;
++              yaffs_obj_t *obj;
++
++              while (shadowFixerList) {
++                      fixer = shadowFixerList;
++                      shadowFixerList = fixer->next;
++                      /* Complete the rename transaction by deleting the shadowed object
++                       * then setting the object header to unshadowed.
++                       */
++                      obj = yaffs_find_by_number(dev, fixer->shadowed_id);
++                      if (obj)
++                              yaffs_del_obj(obj);
++
++                      obj = yaffs_find_by_number(dev, fixer->obj_id);
++
++                      if (obj)
++                              yaffs_update_oh(obj, NULL, 1, 0, 0, NULL);
++
++                      YFREE(fixer);
++              }
++      }
++
++      yaffs_release_temp_buffer(dev, chunkData, __LINE__);
++
++      if (alloc_failed)
++              return YAFFS_FAIL;
++
++      T(YAFFS_TRACE_SCAN, (TSTR("yaffs1_scan ends" TENDSTR)));
++
++
++      return YAFFS_OK;
++}
++
+--- /dev/null
++++ b/fs/yaffs2/yaffs_yaffs1.h
+@@ -0,0 +1,22 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_YAFFS1_H__
++#define __YAFFS_YAFFS1_H__
++
++#include "yaffs_guts.h"
++int yaffs1_scan(yaffs_dev_t *dev);
++
++#endif
+--- /dev/null
++++ b/fs/yaffs2/yaffs_yaffs2.c
+@@ -0,0 +1,1540 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++
++#include "yaffs_guts.h"
++#include "yaffs_trace.h"
++#include "yaffs_yaffs2.h"
++#include "yaffs_checkptrw.h"
++#include "yaffs_bitmap.h"
++#include "yaffs_qsort.h"
++#include "yaffs_nand.h"
++#include "yaffs_getblockinfo.h"
++#include "yaffs_verify.h"
++
++/*
++ * Checkpoints are really no benefit on very small partitions.
++ *
++ * To save space on small partitions don't bother with checkpoints unless
++ * the partition is at least this big.
++ */
++#define YAFFS_CHECKPOINT_MIN_BLOCKS 60
++
++#define YAFFS_SMALL_HOLE_THRESHOLD 4
++
++
++/*
++ * Oldest Dirty Sequence Number handling.
++ */
++ 
++/* yaffs_calc_oldest_dirty_seq()
++ * yaffs2_find_oldest_dirty_seq()
++ * Calculate the oldest dirty sequence number if we don't know it.
++ */
++void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev)
++{
++      int i;
++      unsigned seq;
++      unsigned block_no = 0;
++      yaffs_block_info_t *b;
++
++      if(!dev->param.is_yaffs2)
++              return;
++
++      /* Find the oldest dirty sequence number. */
++      seq = dev->seq_number + 1;
++      b = dev->block_info;
++      for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
++              if (b->block_state == YAFFS_BLOCK_STATE_FULL &&
++                      (b->pages_in_use - b->soft_del_pages) < dev->param.chunks_per_block &&
++                      b->seq_number < seq) {
++                      seq = b->seq_number;
++                      block_no = i;
++              }
++              b++;
++      }
++
++      if(block_no){
++              dev->oldest_dirty_seq = seq;
++              dev->oldest_dirty_block = block_no;
++      }
++
++}
++
++
++void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev)
++{
++      if(!dev->param.is_yaffs2)
++              return;
++
++      if(!dev->oldest_dirty_seq)
++              yaffs_calc_oldest_dirty_seq(dev);
++}
++
++/*
++ * yaffs_clear_oldest_dirty_seq()
++ * Called when a block is erased or marked bad. (ie. when its seq_number
++ * becomes invalid). If the value matches the oldest then we clear 
++ * dev->oldest_dirty_seq to force its recomputation.
++ */
++void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi)
++{
++
++      if(!dev->param.is_yaffs2)
++              return;
++
++      if(!bi || bi->seq_number == dev->oldest_dirty_seq){
++              dev->oldest_dirty_seq = 0;
++              dev->oldest_dirty_block = 0;
++      }
++}
++
++/*
++ * yaffs2_update_oldest_dirty_seq()
++ * Update the oldest dirty sequence number whenever we dirty a block.
++ * Only do this if the oldest_dirty_seq is actually being tracked.
++ */
++void yaffs2_update_oldest_dirty_seq(yaffs_dev_t *dev, unsigned block_no, yaffs_block_info_t *bi)
++{
++      if(!dev->param.is_yaffs2)
++              return;
++
++      if(dev->oldest_dirty_seq){
++              if(dev->oldest_dirty_seq > bi->seq_number){
++                      dev->oldest_dirty_seq = bi->seq_number;
++                      dev->oldest_dirty_block = block_no;
++              }
++      }
++}
++
++int yaffs_block_ok_for_gc(yaffs_dev_t *dev,
++                                      yaffs_block_info_t *bi)
++{
++
++      if (!dev->param.is_yaffs2)
++              return 1;       /* disqualification only applies to yaffs2. */
++
++      if (!bi->has_shrink_hdr)
++              return 1;       /* can gc */
++
++      yaffs2_find_oldest_dirty_seq(dev);
++
++      /* Can't do gc of this block if there are any blocks older than this one that have
++       * discarded pages.
++       */
++      return (bi->seq_number <= dev->oldest_dirty_seq);
++}
++
++/*
++ * yaffs2_find_refresh_block()
++ * periodically finds the oldest full block by sequence number for refreshing.
++ * Only for yaffs2.
++ */
++__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev)
++{
++      __u32 b ;
++
++      __u32 oldest = 0;
++      __u32 oldestSequence = 0;
++
++      yaffs_block_info_t *bi;
++
++      if(!dev->param.is_yaffs2)
++              return oldest;
++
++      /*
++       * If refresh period < 10 then refreshing is disabled.
++       */
++      if(dev->param.refresh_period < 10)
++              return oldest;
++
++        /*
++         * Fix broken values.
++         */
++        if(dev->refresh_skip > dev->param.refresh_period)
++                dev->refresh_skip = dev->param.refresh_period;
++
++      if(dev->refresh_skip > 0)
++              return oldest;
++
++      /*
++       * Refresh skip is now zero.
++       * We'll do a refresh this time around....
++       * Update the refresh skip and find the oldest block.
++       */
++      dev->refresh_skip = dev->param.refresh_period;
++      dev->refresh_count++;
++      bi = dev->block_info;
++      for (b = dev->internal_start_block; b <=dev->internal_end_block; b++){
++
++              if (bi->block_state == YAFFS_BLOCK_STATE_FULL){
++
++                      if(oldest < 1 ||
++                                bi->seq_number < oldestSequence){
++                                oldest = b;
++                                oldestSequence = bi->seq_number;
++                        }
++              }
++              bi++;
++      }
++
++      if (oldest > 0) {
++              T(YAFFS_TRACE_GC,
++                (TSTR("GC refresh count %d selected block %d with seq_number %d" TENDSTR),
++                 dev->refresh_count, oldest, oldestSequence));
++      }
++
++      return oldest;
++}
++
++int yaffs2_checkpt_required(yaffs_dev_t *dev)
++{
++      int nblocks;
++      
++      if(!dev->param.is_yaffs2)
++              return 0;
++      
++      nblocks = dev->internal_end_block - dev->internal_start_block + 1 ;
++
++      return  !dev->param.skip_checkpt_wr &&
++              !dev->read_only &&
++              (nblocks >= YAFFS_CHECKPOINT_MIN_BLOCKS);
++}
++
++int yaffs_calc_checkpt_blocks_required(yaffs_dev_t *dev)
++{
++      int retval;
++
++      if(!dev->param.is_yaffs2)
++              return 0;
++
++      if (!dev->checkpoint_blocks_required &&
++              yaffs2_checkpt_required(dev)){
++              /* Not a valid value so recalculate */
++              int n_bytes = 0;
++              int nBlocks;
++              int devBlocks = (dev->param.end_block - dev->param.start_block + 1);
++
++              n_bytes += sizeof(yaffs_checkpt_validty_t);
++              n_bytes += sizeof(yaffs_checkpt_dev_t);
++              n_bytes += devBlocks * sizeof(yaffs_block_info_t);
++              n_bytes += devBlocks * dev->chunk_bit_stride;
++              n_bytes += (sizeof(yaffs_checkpt_obj_t) + sizeof(__u32)) * (dev->n_obj);
++              n_bytes += (dev->tnode_size + sizeof(__u32)) * (dev->n_tnodes);
++              n_bytes += sizeof(yaffs_checkpt_validty_t);
++              n_bytes += sizeof(__u32); /* checksum*/
++
++              /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */
++
++              nBlocks = (n_bytes/(dev->data_bytes_per_chunk * dev->param.chunks_per_block)) + 3;
++
++              dev->checkpoint_blocks_required = nBlocks;
++      }
++
++      retval = dev->checkpoint_blocks_required - dev->blocks_in_checkpt;
++      if(retval < 0)
++              retval = 0;
++      return retval;
++}
++
++/*--------------------- Checkpointing --------------------*/
++
++
++static int yaffs2_wr_checkpt_validity_marker(yaffs_dev_t *dev, int head)
++{
++      yaffs_checkpt_validty_t cp;
++
++      memset(&cp, 0, sizeof(cp));
++
++      cp.struct_type = sizeof(cp);
++      cp.magic = YAFFS_MAGIC;
++      cp.version = YAFFS_CHECKPOINT_VERSION;
++      cp.head = (head) ? 1 : 0;
++
++      return (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)) ?
++              1 : 0;
++}
++
++static int yaffs2_rd_checkpt_validty_marker(yaffs_dev_t *dev, int head)
++{
++      yaffs_checkpt_validty_t cp;
++      int ok;
++
++      ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp));
++
++      if (ok)
++              ok = (cp.struct_type == sizeof(cp)) &&
++                   (cp.magic == YAFFS_MAGIC) &&
++                   (cp.version == YAFFS_CHECKPOINT_VERSION) &&
++                   (cp.head == ((head) ? 1 : 0));
++      return ok ? 1 : 0;
++}
++
++static void yaffs2_dev_to_checkpt_dev(yaffs_checkpt_dev_t *cp,
++                                         yaffs_dev_t *dev)
++{
++      cp->n_erased_blocks = dev->n_erased_blocks;
++      cp->alloc_block = dev->alloc_block;
++      cp->alloc_page = dev->alloc_page;
++      cp->n_free_chunks = dev->n_free_chunks;
++
++      cp->n_deleted_files = dev->n_deleted_files;
++      cp->n_unlinked_files = dev->n_unlinked_files;
++      cp->n_bg_deletions = dev->n_bg_deletions;
++      cp->seq_number = dev->seq_number;
++
++}
++
++static void yaffs_checkpt_dev_to_dev(yaffs_dev_t *dev,
++                                         yaffs_checkpt_dev_t *cp)
++{
++      dev->n_erased_blocks = cp->n_erased_blocks;
++      dev->alloc_block = cp->alloc_block;
++      dev->alloc_page = cp->alloc_page;
++      dev->n_free_chunks = cp->n_free_chunks;
++
++      dev->n_deleted_files = cp->n_deleted_files;
++      dev->n_unlinked_files = cp->n_unlinked_files;
++      dev->n_bg_deletions = cp->n_bg_deletions;
++      dev->seq_number = cp->seq_number;
++}
++
++
++static int yaffs2_wr_checkpt_dev(yaffs_dev_t *dev)
++{
++      yaffs_checkpt_dev_t cp;
++      __u32 n_bytes;
++      __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1);
++
++      int ok;
++
++      /* Write device runtime values*/
++      yaffs2_dev_to_checkpt_dev(&cp, dev);
++      cp.struct_type = sizeof(cp);
++
++      ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp));
++
++      /* Write block info */
++      if (ok) {
++              n_bytes = nBlocks * sizeof(yaffs_block_info_t);
++              ok = (yaffs2_checkpt_wr(dev, dev->block_info, n_bytes) == n_bytes);
++      }
++
++      /* Write chunk bits */
++      if (ok) {
++              n_bytes = nBlocks * dev->chunk_bit_stride;
++              ok = (yaffs2_checkpt_wr(dev, dev->chunk_bits, n_bytes) == n_bytes);
++      }
++      return   ok ? 1 : 0;
++
++}
++
++static int yaffs2_rd_checkpt_dev(yaffs_dev_t *dev)
++{
++      yaffs_checkpt_dev_t cp;
++      __u32 n_bytes;
++      __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1);
++
++      int ok;
++
++      ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp));
++      if (!ok)
++              return 0;
++
++      if (cp.struct_type != sizeof(cp))
++              return 0;
++
++
++      yaffs_checkpt_dev_to_dev(dev, &cp);
++
++      n_bytes = nBlocks * sizeof(yaffs_block_info_t);
++
++      ok = (yaffs2_checkpt_rd(dev, dev->block_info, n_bytes) == n_bytes);
++
++      if (!ok)
++              return 0;
++      n_bytes = nBlocks * dev->chunk_bit_stride;
++
++      ok = (yaffs2_checkpt_rd(dev, dev->chunk_bits, n_bytes) == n_bytes);
++
++      return ok ? 1 : 0;
++}
++
++static void yaffs2_obj_checkpt_obj(yaffs_checkpt_obj_t *cp,
++                                         yaffs_obj_t *obj)
++{
++
++      cp->obj_id = obj->obj_id;
++      cp->parent_id = (obj->parent) ? obj->parent->obj_id : 0;
++      cp->hdr_chunk = obj->hdr_chunk;
++      cp->variant_type = obj->variant_type;
++      cp->deleted = obj->deleted;
++      cp->soft_del = obj->soft_del;
++      cp->unlinked = obj->unlinked;
++      cp->fake = obj->fake;
++      cp->rename_allowed = obj->rename_allowed;
++      cp->unlink_allowed = obj->unlink_allowed;
++      cp->serial = obj->serial;
++      cp->n_data_chunks = obj->n_data_chunks;
++
++      if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE)
++              cp->size_or_equiv_obj = obj->variant.file_variant.file_size;
++      else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK)
++              cp->size_or_equiv_obj = obj->variant.hardlink_variant.equiv_id;
++}
++
++static int taffs2_checkpt_obj_to_obj(yaffs_obj_t *obj, yaffs_checkpt_obj_t *cp)
++{
++
++      yaffs_obj_t *parent;
++
++      if (obj->variant_type != cp->variant_type) {
++              T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d "
++                      TCONT("chunk %d does not match existing object type %d")
++                      TENDSTR), cp->obj_id, cp->variant_type, cp->hdr_chunk,
++                      obj->variant_type));
++              return 0;
++      }
++
++      obj->obj_id = cp->obj_id;
++
++      if (cp->parent_id)
++              parent = yaffs_find_or_create_by_number(
++                                      obj->my_dev,
++                                      cp->parent_id,
++                                      YAFFS_OBJECT_TYPE_DIRECTORY);
++      else
++              parent = NULL;
++
++      if (parent) {
++              if (parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
++                      T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d"
++                              TCONT(" chunk %d Parent type, %d, not directory")
++                              TENDSTR),
++                              cp->obj_id, cp->parent_id, cp->variant_type,
++                              cp->hdr_chunk, parent->variant_type));
++                      return 0;
++              }
++              yaffs_add_obj_to_dir(parent, obj);
++      }
++
++      obj->hdr_chunk = cp->hdr_chunk;
++      obj->variant_type = cp->variant_type;
++      obj->deleted = cp->deleted;
++      obj->soft_del = cp->soft_del;
++      obj->unlinked = cp->unlinked;
++      obj->fake = cp->fake;
++      obj->rename_allowed = cp->rename_allowed;
++      obj->unlink_allowed = cp->unlink_allowed;
++      obj->serial = cp->serial;
++      obj->n_data_chunks = cp->n_data_chunks;
++
++      if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE)
++              obj->variant.file_variant.file_size = cp->size_or_equiv_obj;
++      else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK)
++              obj->variant.hardlink_variant.equiv_id = cp->size_or_equiv_obj;
++
++      if (obj->hdr_chunk > 0)
++              obj->lazy_loaded = 1;
++      return 1;
++}
++
++
++
++static int yaffs2_checkpt_tnode_worker(yaffs_obj_t *in, yaffs_tnode_t *tn,
++                                      __u32 level, int chunk_offset)
++{
++      int i;
++      yaffs_dev_t *dev = in->my_dev;
++      int ok = 1;
++
++      if (tn) {
++              if (level > 0) {
++
++                      for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
++                              if (tn->internal[i]) {
++                                      ok = yaffs2_checkpt_tnode_worker(in,
++                                                      tn->internal[i],
++                                                      level - 1,
++                                                      (chunk_offset<<YAFFS_TNODES_INTERNAL_BITS) + i);
++                              }
++                      }
++              } else if (level == 0) {
++                      __u32 baseOffset = chunk_offset <<  YAFFS_TNODES_LEVEL0_BITS;
++                      ok = (yaffs2_checkpt_wr(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset));
++                      if (ok)
++                              ok = (yaffs2_checkpt_wr(dev, tn, dev->tnode_size) == dev->tnode_size);
++              }
++      }
++
++      return ok;
++
++}
++
++static int yaffs2_wr_checkpt_tnodes(yaffs_obj_t *obj)
++{
++      __u32 endMarker = ~0;
++      int ok = 1;
++
++      if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) {
++              ok = yaffs2_checkpt_tnode_worker(obj,
++                                          obj->variant.file_variant.top,
++                                          obj->variant.file_variant.top_level,
++                                          0);
++              if (ok)
++                      ok = (yaffs2_checkpt_wr(obj->my_dev, &endMarker, sizeof(endMarker)) ==
++                              sizeof(endMarker));
++      }
++
++      return ok ? 1 : 0;
++}
++
++static int yaffs2_rd_checkpt_tnodes(yaffs_obj_t *obj)
++{
++      __u32 baseChunk;
++      int ok = 1;
++      yaffs_dev_t *dev = obj->my_dev;
++      yaffs_file_s *fileStructPtr = &obj->variant.file_variant;
++      yaffs_tnode_t *tn;
++      int nread = 0;
++
++      ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
++
++      while (ok && (~baseChunk)) {
++              nread++;
++              /* Read level 0 tnode */
++
++
++              tn = yaffs_get_tnode(dev);
++              if (tn){
++                      ok = (yaffs2_checkpt_rd(dev, tn, dev->tnode_size) == dev->tnode_size);
++              } else
++                      ok = 0;
++
++              if (tn && ok)
++                      ok = yaffs_add_find_tnode_0(dev,
++                                                      fileStructPtr,
++                                                      baseChunk,
++                                                      tn) ? 1 : 0;
++
++              if (ok)
++                      ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
++
++      }
++
++      T(YAFFS_TRACE_CHECKPOINT, (
++              TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR),
++              nread, baseChunk, ok));
++
++      return ok ? 1 : 0;
++}
++
++
++static int yaffs2_wr_checkpt_objs(yaffs_dev_t *dev)
++{
++      yaffs_obj_t *obj;
++      yaffs_checkpt_obj_t cp;
++      int i;
++      int ok = 1;
++      struct ylist_head *lh;
++
++
++      /* Iterate through the objects in each hash entry,
++       * dumping them to the checkpointing stream.
++       */
++
++      for (i = 0; ok &&  i <  YAFFS_NOBJECT_BUCKETS; i++) {
++              ylist_for_each(lh, &dev->obj_bucket[i].list) {
++                      if (lh) {
++                              obj = ylist_entry(lh, yaffs_obj_t, hash_link);
++                              if (!obj->defered_free) {
++                                      yaffs2_obj_checkpt_obj(&cp, obj);
++                                      cp.struct_type = sizeof(cp);
++
++                                      T(YAFFS_TRACE_CHECKPOINT, (
++                                              TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %p" TENDSTR),
++                                              cp.obj_id, cp.parent_id, cp.variant_type, cp.hdr_chunk, obj));
++
++                                      ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp));
++
++                                      if (ok && obj->variant_type == YAFFS_OBJECT_TYPE_FILE)
++                                              ok = yaffs2_wr_checkpt_tnodes(obj);
++                              }
++                      }
++              }
++      }
++
++      /* Dump end of list */
++      memset(&cp, 0xFF, sizeof(yaffs_checkpt_obj_t));
++      cp.struct_type = sizeof(cp);
++
++      if (ok)
++              ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp));
++
++      return ok ? 1 : 0;
++}
++
++static int yaffs2_rd_checkpt_objs(yaffs_dev_t *dev)
++{
++      yaffs_obj_t *obj;
++      yaffs_checkpt_obj_t cp;
++      int ok = 1;
++      int done = 0;
++      yaffs_obj_t *hard_list = NULL;
++
++      while (ok && !done) {
++              ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp));
++              if (cp.struct_type != sizeof(cp)) {
++                      T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR),
++                              cp.struct_type, (int)sizeof(cp), ok));
++                      ok = 0;
++              }
++
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR),
++                      cp.obj_id, cp.parent_id, cp.variant_type, cp.hdr_chunk));
++
++              if (ok && cp.obj_id == ~0)
++                      done = 1;
++              else if (ok) {
++                      obj = yaffs_find_or_create_by_number(dev, cp.obj_id, cp.variant_type);
++                      if (obj) {
++                              ok = taffs2_checkpt_obj_to_obj(obj, &cp);
++                              if (!ok)
++                                      break;
++                              if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) {
++                                      ok = yaffs2_rd_checkpt_tnodes(obj);
++                              } else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) {
++                                      obj->hard_links.next =
++                                              (struct ylist_head *) hard_list;
++                                      hard_list = obj;
++                              }
++                      } else
++                              ok = 0;
++              }
++      }
++
++      if (ok)
++              yaffs_link_fixup(dev, hard_list);
++
++      return ok ? 1 : 0;
++}
++
++static int yaffs2_wr_checkpt_sum(yaffs_dev_t *dev)
++{
++      __u32 checkpt_sum;
++      int ok;
++
++      yaffs2_get_checkpt_sum(dev, &checkpt_sum);
++
++      ok = (yaffs2_checkpt_wr(dev, &checkpt_sum, sizeof(checkpt_sum)) == sizeof(checkpt_sum));
++
++      if (!ok)
++              return 0;
++
++      return 1;
++}
++
++static int yaffs2_rd_checkpt_sum(yaffs_dev_t *dev)
++{
++      __u32 checkpt_sum0;
++      __u32 checkpt_sum1;
++      int ok;
++
++      yaffs2_get_checkpt_sum(dev, &checkpt_sum0);
++
++      ok = (yaffs2_checkpt_rd(dev, &checkpt_sum1, sizeof(checkpt_sum1)) == sizeof(checkpt_sum1));
++
++      if (!ok)
++              return 0;
++
++      if (checkpt_sum0 != checkpt_sum1)
++              return 0;
++
++      return 1;
++}
++
++
++static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev)
++{
++      int ok = 1;
++
++      if (!yaffs2_checkpt_required(dev)) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR)));
++              ok = 0;
++      }
++
++      if (ok)
++              ok = yaffs2_checkpt_open(dev, 1);
++
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
++              ok = yaffs2_wr_checkpt_validity_marker(dev, 1);
++      }
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR)));
++              ok = yaffs2_wr_checkpt_dev(dev);
++      }
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR)));
++              ok = yaffs2_wr_checkpt_objs(dev);
++      }
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
++              ok = yaffs2_wr_checkpt_validity_marker(dev, 0);
++      }
++
++      if (ok)
++              ok = yaffs2_wr_checkpt_sum(dev);
++
++      if (!yaffs_checkpt_close(dev))
++              ok = 0;
++
++      if (ok)
++              dev->is_checkpointed = 1;
++      else
++              dev->is_checkpointed = 0;
++
++      return dev->is_checkpointed;
++}
++
++static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev)
++{
++      int ok = 1;
++      
++      if(!dev->param.is_yaffs2)
++              ok = 0;
++
++      if (ok && dev->param.skip_checkpt_rd) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR)));
++              ok = 0;
++      }
++
++      if (ok)
++              ok = yaffs2_checkpt_open(dev, 0); /* open for read */
++
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
++              ok = yaffs2_rd_checkpt_validty_marker(dev, 1);
++      }
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR)));
++              ok = yaffs2_rd_checkpt_dev(dev);
++      }
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR)));
++              ok = yaffs2_rd_checkpt_objs(dev);
++      }
++      if (ok) {
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
++              ok = yaffs2_rd_checkpt_validty_marker(dev, 0);
++      }
++
++      if (ok) {
++              ok = yaffs2_rd_checkpt_sum(dev);
++              T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok));
++      }
++
++      if (!yaffs_checkpt_close(dev))
++              ok = 0;
++
++      if (ok)
++              dev->is_checkpointed = 1;
++      else
++              dev->is_checkpointed = 0;
++
++      return ok ? 1 : 0;
++
++}
++
++void yaffs2_checkpt_invalidate(yaffs_dev_t *dev)
++{
++      if (dev->is_checkpointed ||
++                      dev->blocks_in_checkpt > 0) {
++              dev->is_checkpointed = 0;
++              yaffs2_checkpt_invalidate_stream(dev);
++      }
++      if (dev->param.sb_dirty_fn)
++              dev->param.sb_dirty_fn(dev);
++}
++
++
++int yaffs_checkpoint_save(yaffs_dev_t *dev)
++{
++
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed));
++
++      yaffs_verify_objects(dev);
++      yaffs_verify_blocks(dev);
++      yaffs_verify_free_chunks(dev);
++
++      if (!dev->is_checkpointed) {
++              yaffs2_checkpt_invalidate(dev);
++              yaffs2_wr_checkpt_data(dev);
++      }
++
++      T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed));
++
++      return dev->is_checkpointed;
++}
++
++int yaffs2_checkpt_restore(yaffs_dev_t *dev)
++{
++      int retval;
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed));
++
++      retval = yaffs2_rd_checkpt_data(dev);
++
++      if (dev->is_checkpointed) {
++              yaffs_verify_objects(dev);
++              yaffs_verify_blocks(dev);
++              yaffs_verify_free_chunks(dev);
++      }
++
++      T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed));
++
++      return retval;
++}
++
++int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size)
++{
++      /* if newsSize > oldFileSize.
++       * We're going to be writing a hole.
++       * If the hole is small then write zeros otherwise write a start of hole marker.
++       */
++              
++
++      loff_t oldFileSize;
++      int increase;
++      int smallHole   ;
++      int result = YAFFS_OK;
++      yaffs_dev_t *dev = NULL;
++
++      __u8 *localBuffer = NULL;
++      
++      int smallIncreaseOk = 0;
++      
++      if(!obj)
++              return YAFFS_FAIL;
++
++      if(obj->variant_type != YAFFS_OBJECT_TYPE_FILE)
++              return YAFFS_FAIL;
++      
++      dev = obj->my_dev;
++      
++      /* Bail out if not yaffs2 mode */
++      if(!dev->param.is_yaffs2)
++              return YAFFS_OK;
++
++      oldFileSize = obj->variant.file_variant.file_size;
++
++      if (new_size <= oldFileSize)
++              return YAFFS_OK;
++
++      increase = new_size - oldFileSize;
++
++      if(increase < YAFFS_SMALL_HOLE_THRESHOLD * dev->data_bytes_per_chunk &&
++              yaffs_check_alloc_available(dev, YAFFS_SMALL_HOLE_THRESHOLD + 1))
++              smallHole = 1;
++      else
++              smallHole = 0;
++
++      if(smallHole)
++              localBuffer= yaffs_get_temp_buffer(dev, __LINE__);
++      
++      if(localBuffer){
++              /* fill hole with zero bytes */
++              int pos = oldFileSize;
++              int thisWrite;
++              int written;
++              memset(localBuffer,0,dev->data_bytes_per_chunk);
++              smallIncreaseOk = 1;
++
++              while(increase > 0 && smallIncreaseOk){
++                      thisWrite = increase;
++                      if(thisWrite > dev->data_bytes_per_chunk)
++                              thisWrite = dev->data_bytes_per_chunk;
++                      written = yaffs_do_file_wr(obj,localBuffer,pos,thisWrite,0);
++                      if(written == thisWrite){
++                              pos += thisWrite;
++                              increase -= thisWrite;
++                      } else
++                              smallIncreaseOk = 0;
++              }
++
++              yaffs_release_temp_buffer(dev,localBuffer,__LINE__);
++
++              /* If we were out of space then reverse any chunks we've added */               
++              if(!smallIncreaseOk)
++                      yaffs_resize_file_down(obj, oldFileSize);
++      }
++      
++      if (!smallIncreaseOk &&
++              obj->parent &&
++              obj->parent->obj_id != YAFFS_OBJECTID_UNLINKED &&
++              obj->parent->obj_id != YAFFS_OBJECTID_DELETED){
++              /* Write a hole start header with the old file size */
++              yaffs_update_oh(obj, NULL, 0, 1, 0, NULL);
++      }
++
++      return result;
++
++}
++
++
++typedef struct {
++      int seq;
++      int block;
++} yaffs_BlockIndex;
++
++
++static int yaffs2_ybicmp(const void *a, const void *b)
++{
++      register int aseq = ((yaffs_BlockIndex *)a)->seq;
++      register int bseq = ((yaffs_BlockIndex *)b)->seq;
++      register int ablock = ((yaffs_BlockIndex *)a)->block;
++      register int bblock = ((yaffs_BlockIndex *)b)->block;
++      if (aseq == bseq)
++              return ablock - bblock;
++      else
++              return aseq - bseq;
++}
++
++int yaffs2_scan_backwards(yaffs_dev_t *dev)
++{
++      yaffs_ext_tags tags;
++      int blk;
++      int blockIterator;
++      int startIterator;
++      int endIterator;
++      int nBlocksToScan = 0;
++
++      int chunk;
++      int result;
++      int c;
++      int deleted;
++      yaffs_block_state_t state;
++      yaffs_obj_t *hard_list = NULL;
++      yaffs_block_info_t *bi;
++      __u32 seq_number;
++      yaffs_obj_header *oh;
++      yaffs_obj_t *in;
++      yaffs_obj_t *parent;
++      int nBlocks = dev->internal_end_block - dev->internal_start_block + 1;
++      int itsUnlinked;
++      __u8 *chunkData;
++
++      int file_size;
++      int is_shrink;
++      int foundChunksInBlock;
++      int equiv_id;
++      int alloc_failed = 0;
++
++
++      yaffs_BlockIndex *blockIndex = NULL;
++      int altBlockIndex = 0;
++
++      T(YAFFS_TRACE_SCAN,
++        (TSTR
++         ("yaffs2_scan_backwards starts  intstartblk %d intendblk %d..."
++          TENDSTR), dev->internal_start_block, dev->internal_end_block));
++
++
++      dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER;
++
++      blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
++
++      if (!blockIndex) {
++              blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex));
++              altBlockIndex = 1;
++      }
++
++      if (!blockIndex) {
++              T(YAFFS_TRACE_SCAN,
++                (TSTR("yaffs2_scan_backwards() could not allocate block index!" TENDSTR)));
++              return YAFFS_FAIL;
++      }
++
++      dev->blocks_in_checkpt = 0;
++
++      chunkData = yaffs_get_temp_buffer(dev, __LINE__);
++
++      /* Scan all the blocks to determine their state */
++      bi = dev->block_info;
++      for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) {
++              yaffs_clear_chunk_bits(dev, blk);
++              bi->pages_in_use = 0;
++              bi->soft_del_pages = 0;
++
++              yaffs_query_init_block_state(dev, blk, &state, &seq_number);
++
++              bi->block_state = state;
++              bi->seq_number = seq_number;
++
++              if (bi->seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA)
++                      bi->block_state = state = YAFFS_BLOCK_STATE_CHECKPOINT;
++              if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK)
++                      bi->block_state = state = YAFFS_BLOCK_STATE_DEAD;
++
++              T(YAFFS_TRACE_SCAN_DEBUG,
++                (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
++                 state, seq_number));
++
++
++              if (state == YAFFS_BLOCK_STATE_CHECKPOINT) {
++                      dev->blocks_in_checkpt++;
++
++              } else if (state == YAFFS_BLOCK_STATE_DEAD) {
++                      T(YAFFS_TRACE_BAD_BLOCKS,
++                        (TSTR("block %d is bad" TENDSTR), blk));
++              } else if (state == YAFFS_BLOCK_STATE_EMPTY) {
++                      T(YAFFS_TRACE_SCAN_DEBUG,
++                        (TSTR("Block empty " TENDSTR)));
++                      dev->n_erased_blocks++;
++                      dev->n_free_chunks += dev->param.chunks_per_block;
++              } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
++
++                      /* Determine the highest sequence number */
++                      if (seq_number >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
++                          seq_number < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
++
++                              blockIndex[nBlocksToScan].seq = seq_number;
++                              blockIndex[nBlocksToScan].block = blk;
++
++                              nBlocksToScan++;
++
++                              if (seq_number >= dev->seq_number)
++                                      dev->seq_number = seq_number;
++                      } else {
++                              /* TODO: Nasty sequence number! */
++                              T(YAFFS_TRACE_SCAN,
++                                (TSTR
++                                 ("Block scanning block %d has bad sequence number %d"
++                                  TENDSTR), blk, seq_number));
++
++                      }
++              }
++              bi++;
++      }
++
++      T(YAFFS_TRACE_SCAN,
++      (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan));
++
++
++
++      YYIELD();
++
++      /* Sort the blocks by sequence number*/
++      yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), yaffs2_ybicmp);
++
++      YYIELD();
++
++      T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR)));
++
++      /* Now scan the blocks looking at the data. */
++      startIterator = 0;
++      endIterator = nBlocksToScan - 1;
++      T(YAFFS_TRACE_SCAN_DEBUG,
++        (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan));
++
++      /* For each block.... backwards */
++      for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator;
++                      blockIterator--) {
++              /* Cooperative multitasking! This loop can run for so
++                 long that watchdog timers expire. */
++              YYIELD();
++
++              /* get the block to scan in the correct order */
++              blk = blockIndex[blockIterator].block;
++
++              bi = yaffs_get_block_info(dev, blk);
++
++
++              state = bi->block_state;
++
++              deleted = 0;
++
++              /* For each chunk in each block that needs scanning.... */
++              foundChunksInBlock = 0;
++              for (c = dev->param.chunks_per_block - 1;
++                   !alloc_failed && c >= 0 &&
++                   (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
++                    state == YAFFS_BLOCK_STATE_ALLOCATING); c--) {
++                      /* Scan backwards...
++                       * Read the tags and decide what to do
++                       */
++
++                      chunk = blk * dev->param.chunks_per_block + c;
++
++                      result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL,
++                                                      &tags);
++
++                      /* Let's have a good look at this chunk... */
++
++                      if (!tags.chunk_used) {
++                              /* An unassigned chunk in the block.
++                               * If there are used chunks after this one, then
++                               * it is a chunk that was skipped due to failing the erased
++                               * check. Just skip it so that it can be deleted.
++                               * But, more typically, We get here when this is an unallocated
++                               * chunk and his means that either the block is empty or
++                               * this is the one being allocated from
++                               */
++
++                              if (foundChunksInBlock) {
++                                      /* This is a chunk that was skipped due to failing the erased check */
++                              } else if (c == 0) {
++                                      /* We're looking at the first chunk in the block so the block is unused */
++                                      state = YAFFS_BLOCK_STATE_EMPTY;
++                                      dev->n_erased_blocks++;
++                              } else {
++                                      if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
++                                          state == YAFFS_BLOCK_STATE_ALLOCATING) {
++                                              if (dev->seq_number == bi->seq_number) {
++                                                      /* this is the block being allocated from */
++
++                                                      T(YAFFS_TRACE_SCAN,
++                                                        (TSTR
++                                                         (" Allocating from %d %d"
++                                                          TENDSTR), blk, c));
++
++                                                      state = YAFFS_BLOCK_STATE_ALLOCATING;
++                                                      dev->alloc_block = blk;
++                                                      dev->alloc_page = c;
++                                                      dev->alloc_block_finder = blk;
++                                              } else {
++                                                      /* This is a partially written block that is not
++                                                       * the current allocation block.
++                                                       */
++
++                                                       T(YAFFS_TRACE_SCAN,
++                                                       (TSTR("Partially written block %d detected" TENDSTR),
++                                                       blk));
++                                              }
++                                      }
++                              }
++
++                              dev->n_free_chunks++;
++
++                      } else if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED) {
++                              T(YAFFS_TRACE_SCAN,
++                                (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR),
++                                blk, c));
++
++                                dev->n_free_chunks++;
++
++                      } else if (tags.obj_id > YAFFS_MAX_OBJECT_ID ||
++                              tags.chunk_id > YAFFS_MAX_CHUNK_ID ||
++                              (tags.chunk_id > 0 && tags.n_bytes > dev->data_bytes_per_chunk) ||
++                              tags.seq_number != bi->seq_number ) {
++                              T(YAFFS_TRACE_SCAN,
++                                (TSTR("Chunk (%d:%d) with bad tags:obj = %d, chunk_id = %d, n_bytes = %d, ignored"TENDSTR),
++                                blk, c,tags.obj_id, tags.chunk_id, tags.n_bytes));
++
++                                dev->n_free_chunks++;
++
++                      } else if (tags.chunk_id > 0) {
++                              /* chunk_id > 0 so it is a data chunk... */
++                              unsigned int endpos;
++                              __u32 chunkBase =
++                                  (tags.chunk_id - 1) * dev->data_bytes_per_chunk;
++
++                              foundChunksInBlock = 1;
++
++
++                              yaffs_set_chunk_bit(dev, blk, c);
++                              bi->pages_in_use++;
++
++                              in = yaffs_find_or_create_by_number(dev,
++                                                                    tags.
++                                                                    obj_id,
++                                                                    YAFFS_OBJECT_TYPE_FILE);
++                              if (!in) {
++                                      /* Out of memory */
++                                      alloc_failed = 1;
++                              }
++
++                              if (in &&
++                                  in->variant_type == YAFFS_OBJECT_TYPE_FILE
++                                  && chunkBase < in->variant.file_variant.shrink_size) {
++                                      /* This has not been invalidated by a resize */
++                                      if (!yaffs_put_chunk_in_file(in, tags.chunk_id, chunk, -1)) {
++                                              alloc_failed = 1;
++                                      }
++
++                                      /* File size is calculated by looking at the data chunks if we have not
++                                       * seen an object header yet. Stop this practice once we find an object header.
++                                       */
++                                      endpos = chunkBase + tags.n_bytes;
++
++                                      if (!in->valid &&       /* have not got an object header yet */
++                                          in->variant.file_variant.scanned_size < endpos) {
++                                              in->variant.file_variant.scanned_size = endpos;
++                                              in->variant.file_variant.file_size = endpos;
++                                      }
++
++                              } else if (in) {
++                                      /* This chunk has been invalidated by a resize, or a past file deletion
++                                       * so delete the chunk*/
++                                      yaffs_chunk_del(dev, chunk, 1, __LINE__);
++
++                              }
++                      } else {
++                              /* chunk_id == 0, so it is an ObjectHeader.
++                               * Thus, we read in the object header and make the object
++                               */
++                              foundChunksInBlock = 1;
++
++                              yaffs_set_chunk_bit(dev, blk, c);
++                              bi->pages_in_use++;
++
++                              oh = NULL;
++                              in = NULL;
++
++                              if (tags.extra_available) {
++                                      in = yaffs_find_or_create_by_number(dev,
++                                              tags.obj_id,
++                                              tags.extra_obj_type);
++                                      if (!in)
++                                              alloc_failed = 1;
++                              }
++
++                              if (!in ||
++                                  (!in->valid && dev->param.disable_lazy_load) ||
++                                  tags.extra_shadows ||
++                                  (!in->valid &&
++                                  (tags.obj_id == YAFFS_OBJECTID_ROOT ||
++                                   tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND))) {
++
++                                      /* If we don't have  valid info then we need to read the chunk
++                                       * TODO In future we can probably defer reading the chunk and
++                                       * living with invalid data until needed.
++                                       */
++
++                                      result = yaffs_rd_chunk_tags_nand(dev,
++                                                                      chunk,
++                                                                      chunkData,
++                                                                      NULL);
++
++                                      oh = (yaffs_obj_header *) chunkData;
++
++                                      if (dev->param.inband_tags) {
++                                              /* Fix up the header if they got corrupted by inband tags */
++                                              oh->shadows_obj = oh->inband_shadowed_obj_id;
++                                              oh->is_shrink = oh->inband_is_shrink;
++                                      }
++
++                                      if (!in) {
++                                              in = yaffs_find_or_create_by_number(dev, tags.obj_id, oh->type);
++                                              if (!in)
++                                                      alloc_failed = 1;
++                                      }
++
++                              }
++
++                              if (!in) {
++                                      /* TODO Hoosterman we have a problem! */
++                                      T(YAFFS_TRACE_ERROR,
++                                        (TSTR
++                                         ("yaffs tragedy: Could not make object for object  %d at chunk %d during scan"
++                                          TENDSTR), tags.obj_id, chunk));
++                                      continue;
++                              }
++
++                              if (in->valid) {
++                                      /* We have already filled this one.
++                                       * We have a duplicate that will be discarded, but
++                                       * we first have to suck out resize info if it is a file.
++                                       */
++
++                                      if ((in->variant_type == YAFFS_OBJECT_TYPE_FILE) &&
++                                           ((oh &&
++                                             oh->type == YAFFS_OBJECT_TYPE_FILE) ||
++                                            (tags.extra_available  &&
++                                             tags.extra_obj_type == YAFFS_OBJECT_TYPE_FILE))) {
++                                              __u32 thisSize =
++                                                  (oh) ? oh->file_size : tags.
++                                                  extra_length;
++                                              __u32 parent_obj_id =
++                                                  (oh) ? oh->
++                                                  parent_obj_id : tags.
++                                                  extra_parent_id;
++
++
++                                              is_shrink =
++                                                  (oh) ? oh->is_shrink : tags.
++                                                  extra_is_shrink;
++
++                                              /* If it is deleted (unlinked at start also means deleted)
++                                               * we treat the file size as being zeroed at this point.
++                                               */
++                                              if (parent_obj_id ==
++                                                  YAFFS_OBJECTID_DELETED
++                                                  || parent_obj_id ==
++                                                  YAFFS_OBJECTID_UNLINKED) {
++                                                      thisSize = 0;
++                                                      is_shrink = 1;
++                                              }
++
++                                              if (is_shrink && in->variant.file_variant.shrink_size > thisSize)
++                                                      in->variant.file_variant.shrink_size = thisSize;
++
++                                              if (is_shrink)
++                                                      bi->has_shrink_hdr = 1;
++
++                                      }
++                                      /* Use existing - destroy this one. */
++                                      yaffs_chunk_del(dev, chunk, 1, __LINE__);
++
++                              }
++
++                              if (!in->valid && in->variant_type !=
++                                  (oh ? oh->type : tags.extra_obj_type))
++                                      T(YAFFS_TRACE_ERROR, (
++                                              TSTR("yaffs tragedy: Bad object type, "
++                                          TCONT("%d != %d, for object %d at chunk ")
++                                          TCONT("%d during scan")
++                                              TENDSTR), oh ?
++                                          oh->type : tags.extra_obj_type,
++                                          in->variant_type, tags.obj_id,
++                                          chunk));
++
++                              if (!in->valid &&
++                                  (tags.obj_id == YAFFS_OBJECTID_ROOT ||
++                                   tags.obj_id ==
++                                   YAFFS_OBJECTID_LOSTNFOUND)) {
++                                      /* We only load some info, don't fiddle with directory structure */
++                                      in->valid = 1;
++
++                                      if (oh) {
++
++                                              in->yst_mode = oh->yst_mode;
++#ifdef CONFIG_YAFFS_WINCE
++                                              in->win_atime[0] = oh->win_atime[0];
++                                              in->win_ctime[0] = oh->win_ctime[0];
++                                              in->win_mtime[0] = oh->win_mtime[0];
++                                              in->win_atime[1] = oh->win_atime[1];
++                                              in->win_ctime[1] = oh->win_ctime[1];
++                                              in->win_mtime[1] = oh->win_mtime[1];
++#else
++                                              in->yst_uid = oh->yst_uid;
++                                              in->yst_gid = oh->yst_gid;
++                                              in->yst_atime = oh->yst_atime;
++                                              in->yst_mtime = oh->yst_mtime;
++                                              in->yst_ctime = oh->yst_ctime;
++                                              in->yst_rdev = oh->yst_rdev;
++
++                                              in->lazy_loaded = 0;
++
++#endif
++                                      } else
++                                              in->lazy_loaded = 1;
++
++                                      in->hdr_chunk = chunk;
++
++                              } else if (!in->valid) {
++                                      /* we need to load this info */
++
++                                      in->valid = 1;
++                                      in->hdr_chunk = chunk;
++
++                                      if (oh) {
++                                              in->variant_type = oh->type;
++
++                                              in->yst_mode = oh->yst_mode;
++#ifdef CONFIG_YAFFS_WINCE
++                                              in->win_atime[0] = oh->win_atime[0];
++                                              in->win_ctime[0] = oh->win_ctime[0];
++                                              in->win_mtime[0] = oh->win_mtime[0];
++                                              in->win_atime[1] = oh->win_atime[1];
++                                              in->win_ctime[1] = oh->win_ctime[1];
++                                              in->win_mtime[1] = oh->win_mtime[1];
++#else
++                                              in->yst_uid = oh->yst_uid;
++                                              in->yst_gid = oh->yst_gid;
++                                              in->yst_atime = oh->yst_atime;
++                                              in->yst_mtime = oh->yst_mtime;
++                                              in->yst_ctime = oh->yst_ctime;
++                                              in->yst_rdev = oh->yst_rdev;
++#endif
++
++                                              if (oh->shadows_obj > 0)
++                                                      yaffs_handle_shadowed_obj(dev,
++                                                                         oh->
++                                                                         shadows_obj,
++                                                                         1);
++                                                      
++
++
++                                              yaffs_set_obj_name_from_oh(in, oh);
++                                              parent =
++                                                  yaffs_find_or_create_by_number
++                                                      (dev, oh->parent_obj_id,
++                                                       YAFFS_OBJECT_TYPE_DIRECTORY);
++
++                                               file_size = oh->file_size;
++                                               is_shrink = oh->is_shrink;
++                                               equiv_id = oh->equiv_id;
++
++                                      } else {
++                                              in->variant_type = tags.extra_obj_type;
++                                              parent =
++                                                  yaffs_find_or_create_by_number
++                                                      (dev, tags.extra_parent_id,
++                                                       YAFFS_OBJECT_TYPE_DIRECTORY);
++                                               file_size = tags.extra_length;
++                                               is_shrink = tags.extra_is_shrink;
++                                               equiv_id = tags.extra_equiv_id;
++                                              in->lazy_loaded = 1;
++
++                                      }
++                                      in->dirty = 0;
++
++                                      if (!parent)
++                                              alloc_failed = 1;
++
++                                      /* directory stuff...
++                                       * hook up to parent
++                                       */
++
++                                      if (parent && parent->variant_type ==
++                                          YAFFS_OBJECT_TYPE_UNKNOWN) {
++                                              /* Set up as a directory */
++                                              parent->variant_type =
++                                                      YAFFS_OBJECT_TYPE_DIRECTORY;
++                                              YINIT_LIST_HEAD(&parent->variant.
++                                                      dir_variant.
++                                                      children);
++                                      } else if (!parent || parent->variant_type !=
++                                                 YAFFS_OBJECT_TYPE_DIRECTORY) {
++                                              /* Hoosterman, another problem....
++                                               * We're trying to use a non-directory as a directory
++                                               */
++
++                                              T(YAFFS_TRACE_ERROR,
++                                                (TSTR
++                                                 ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
++                                                  TENDSTR)));
++                                              parent = dev->lost_n_found;
++                                      }
++
++                                      yaffs_add_obj_to_dir(parent, in);
++
++                                      itsUnlinked = (parent == dev->del_dir) ||
++                                                    (parent == dev->unlinked_dir);
++
++                                      if (is_shrink) {
++                                              /* Mark the block as having a shrinkHeader */
++                                              bi->has_shrink_hdr = 1;
++                                      }
++
++                                      /* Note re hardlinks.
++                                       * Since we might scan a hardlink before its equivalent object is scanned
++                                       * we put them all in a list.
++                                       * After scanning is complete, we should have all the objects, so we run
++                                       * through this list and fix up all the chains.
++                                       */
++
++                                      switch (in->variant_type) {
++                                      case YAFFS_OBJECT_TYPE_UNKNOWN:
++                                              /* Todo got a problem */
++                                              break;
++                                      case YAFFS_OBJECT_TYPE_FILE:
++
++                                              if (in->variant.file_variant.
++                                                  scanned_size < file_size) {
++                                                      /* This covers the case where the file size is greater
++                                                       * than where the data is
++                                                       * This will happen if the file is resized to be larger
++                                                       * than its current data extents.
++                                                       */
++                                                      in->variant.file_variant.file_size = file_size;
++                                                      in->variant.file_variant.scanned_size = file_size;
++                                              }
++
++                                              if (in->variant.file_variant.shrink_size > file_size)
++                                                      in->variant.file_variant.shrink_size = file_size;
++                              
++
++                                              break;
++                                      case YAFFS_OBJECT_TYPE_HARDLINK:
++                                              if (!itsUnlinked) {
++                                                      in->variant.hardlink_variant.equiv_id =
++                                                              equiv_id;
++                                                      in->hard_links.next =
++                                                              (struct ylist_head *) hard_list;
++                                                      hard_list = in;
++                                              }
++                                              break;
++                                      case YAFFS_OBJECT_TYPE_DIRECTORY:
++                                              /* Do nothing */
++                                              break;
++                                      case YAFFS_OBJECT_TYPE_SPECIAL:
++                                              /* Do nothing */
++                                              break;
++                                      case YAFFS_OBJECT_TYPE_SYMLINK:
++                                              if (oh) {
++                                                      in->variant.symlink_variant.alias =
++                                                              yaffs_clone_str(oh->alias);
++                                                      if (!in->variant.symlink_variant.alias)
++                                                              alloc_failed = 1;
++                                              }
++                                              break;
++                                      }
++
++                              }
++
++                      }
++
++              } /* End of scanning for each chunk */
++
++              if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
++                      /* If we got this far while scanning, then the block is fully allocated. */
++                      state = YAFFS_BLOCK_STATE_FULL;
++              }
++
++
++              bi->block_state = state;
++
++              /* Now let's see if it was dirty */
++              if (bi->pages_in_use == 0 &&
++                  !bi->has_shrink_hdr &&
++                  bi->block_state == YAFFS_BLOCK_STATE_FULL) {
++                      yaffs_block_became_dirty(dev, blk);
++              }
++
++      }
++      
++      yaffs_skip_rest_of_block(dev);
++
++      if (altBlockIndex)
++              YFREE_ALT(blockIndex);
++      else
++              YFREE(blockIndex);
++
++      /* Ok, we've done all the scanning.
++       * Fix up the hard link chains.
++       * We should now have scanned all the objects, now it's time to add these
++       * hardlinks.
++       */
++      yaffs_link_fixup(dev, hard_list);
++
++
++      yaffs_release_temp_buffer(dev, chunkData, __LINE__);
++
++      if (alloc_failed)
++              return YAFFS_FAIL;
++
++      T(YAFFS_TRACE_SCAN, (TSTR("yaffs2_scan_backwards ends" TENDSTR)));
++
++      return YAFFS_OK;
++}
+--- /dev/null
++++ b/fs/yaffs2/yaffs_yaffs2.h
+@@ -0,0 +1,36 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2010 Aleph One Ltd.
++ *   for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#ifndef __YAFFS_YAFFS2_H__
++#define __YAFFS_YAFFS2_H__
++
++#include "yaffs_guts.h"
++
++void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev);
++void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev);
++void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi);
++void yaffs2_update_oldest_dirty_seq(yaffs_dev_t *dev, unsigned block_no, yaffs_block_info_t *bi);
++int yaffs_block_ok_for_gc(yaffs_dev_t *dev, yaffs_block_info_t *bi);
++__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev);
++int yaffs2_checkpt_required(yaffs_dev_t *dev);
++int yaffs_calc_checkpt_blocks_required(yaffs_dev_t *dev);
++
++
++void yaffs2_checkpt_invalidate(yaffs_dev_t *dev);
++int yaffs2_checkpt_save(yaffs_dev_t *dev);
++int yaffs2_checkpt_restore(yaffs_dev_t *dev);
++
++int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size);
++int yaffs2_scan_backwards(yaffs_dev_t *dev);
++
++#endif
+--- a/fs/yaffs2/yportenv.h
++++ b/fs/yaffs2/yportenv.h
+@@ -1,7 +1,7 @@
+ /*
+  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+  *
+- * Copyright (C) 2002-2007 Aleph One Ltd.
++ * Copyright (C) 2002-2010 Aleph One Ltd.
+  *   for Toby Churchill Ltd and Brightstar Engineering
+  *
+  * Created by Charles Manning <charles@aleph1.co.uk>
+@@ -41,12 +41,14 @@
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
+ #include <linux/config.h>
+ #endif
++
+ #include <linux/kernel.h>
+ #include <linux/mm.h>
+ #include <linux/sched.h>
+ #include <linux/string.h>
+ #include <linux/slab.h>
+ #include <linux/vmalloc.h>
++#include <linux/xattr.h>
+ 
+ #define YCHAR char
+ #define YUCHAR unsigned char
+@@ -55,11 +57,11 @@
+ #define yaffs_strcpy(a, b)     strcpy(a, b)
+ #define yaffs_strncpy(a, b, c) strncpy(a, b, c)
+ #define yaffs_strncmp(a, b, c) strncmp(a, b, c)
+-#define yaffs_strlen(s)              strlen(s)
++#define yaffs_strnlen(s,m)    strnlen(s,m)
+ #define yaffs_sprintf        sprintf
+ #define yaffs_toupper(a)       toupper(a)
+ 
+-#define Y_INLINE inline
++#define Y_INLINE __inline__
+ 
+ #define YAFFS_LOSTNFOUND_NAME         "lost+found"
+ #define YAFFS_LOSTNFOUND_PREFIX               "obj"
+@@ -71,11 +73,11 @@
+ #define YFREE_ALT(x)   vfree(x)
+ #define YMALLOC_DMA(x) YMALLOC(x)
+ 
+-/* KR - added for use in scan so processes aren't blocked indefinitely. */
+ #define YYIELD() schedule()
++#define Y_DUMP_STACK() dump_stack()
+ 
+-#define YAFFS_ROOT_MODE                       0666
+-#define YAFFS_LOSTNFOUND_MODE         0666
++#define YAFFS_ROOT_MODE                       0755
++#define YAFFS_LOSTNFOUND_MODE         0700
+ 
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ #define Y_CURRENT_TIME CURRENT_TIME.tv_sec
+@@ -85,19 +87,14 @@
+ #define Y_TIME_CONVERT(x) (x)
+ #endif
+ 
+-#define yaffs_SumCompare(x, y) ((x) == (y))
++#define yaffs_sum_cmp(x, y) ((x) == (y))
+ #define yaffs_strcmp(a, b) strcmp(a, b)
+ 
+ #define TENDSTR "\n"
+-#define TSTR(x) KERN_WARNING x
++#define TSTR(x) KERN_DEBUG x
+ #define TCONT(x) x
+ #define TOUT(p) printk p
+ 
+-#define yaffs_trace(mask, fmt, args...) \
+-      do { if ((mask) & (yaffs_traceMask|YAFFS_TRACE_ERROR)) \
+-              printk(KERN_WARNING "yaffs: " fmt, ## args); \
+-      } while (0)
+-
+ #define compile_time_assertion(assertion) \
+       ({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; })
+ 
+@@ -116,7 +113,6 @@
+ #include "stdio.h"
+ #include "string.h"
+ 
+-#include "devextras.h"
+ 
+ #define YMALLOC(x) malloc(x)
+ #define YFREE(x)   free(x)
+@@ -129,7 +125,7 @@
+ #define yaffs_strcat(a, b)     strcat(a, b)
+ #define yaffs_strcpy(a, b)     strcpy(a, b)
+ #define yaffs_strncpy(a, b, c) strncpy(a, b, c)
+-#define yaffs_strlen(s)              strlen(s)
++#define yaffs_strnlen(s,m)           strnlen(s,m)
+ #define yaffs_sprintf        sprintf
+ #define yaffs_toupper(a)       toupper(a)
+ 
+@@ -146,10 +142,10 @@
+ #define YAFFS_LOSTNFOUND_PREFIX               "obj"
+ /* #define YPRINTF(x) printf x */
+ 
+-#define YAFFS_ROOT_MODE                               0666
+-#define YAFFS_LOSTNFOUND_MODE         0666
++#define YAFFS_ROOT_MODE                       0755
++#define YAFFS_LOSTNFOUND_MODE         0700
+ 
+-#define yaffs_SumCompare(x, y) ((x) == (y))
++#define yaffs_sum_cmp(x, y) ((x) == (y))
+ #define yaffs_strcmp(a, b) strcmp(a, b)
+ 
+ #else
+@@ -158,46 +154,180 @@
+ 
+ #endif
+ 
+-/* see yaffs_fs.c */
+-extern unsigned int yaffs_traceMask;
+-extern unsigned int yaffs_wr_attempts;
++#if defined(CONFIG_YAFFS_DIRECT) || defined(CONFIG_YAFFS_WINCE)
+ 
+-/*
+- * Tracing flags.
+- * The flags masked in YAFFS_TRACE_ALWAYS are always traced.
+- */
++#ifdef CONFIG_YAFFSFS_PROVIDE_VALUES
++
++#ifndef O_RDONLY
++#define O_RDONLY        00
++#endif
++
++#ifndef O_WRONLY
++#define O_WRONLY      01
++#endif
++
++#ifndef O_RDWR
++#define O_RDWR                02
++#endif
++
++#ifndef O_CREAT               
++#define O_CREAT       0100
++#endif
++
++#ifndef O_EXCL
++#define O_EXCL                0200
++#endif
++
++#ifndef O_TRUNC
++#define O_TRUNC               01000
++#endif
++
++#ifndef O_APPEND
++#define O_APPEND      02000
++#endif
++
++#ifndef SEEK_SET
++#define SEEK_SET      0
++#endif
++
++#ifndef SEEK_CUR
++#define SEEK_CUR      1
++#endif
++
++#ifndef SEEK_END
++#define SEEK_END      2
++#endif
++
++#ifndef EBUSY
++#define EBUSY 16
++#endif
++
++#ifndef ENODEV
++#define ENODEV        19
++#endif
++
++#ifndef EINVAL
++#define EINVAL        22
++#endif
++
++#ifndef EBADF
++#define EBADF 9
++#endif
++
++#ifndef EACCES
++#define EACCES        13
++#endif
++
++#ifndef EXDEV 
++#define EXDEV 18
++#endif
++
++#ifndef ENOENT
++#define ENOENT        2
++#endif
++
++#ifndef ENOSPC
++#define ENOSPC        28
++#endif
++
++#ifndef ERANGE
++#define ERANGE 34
++#endif
++
++#ifndef ENODATA
++#define ENODATA 61
++#endif
++
++#ifndef ENOTEMPTY
++#define ENOTEMPTY 39
++#endif
++
++#ifndef ENAMETOOLONG
++#define ENAMETOOLONG 36
++#endif
++
++#ifndef ENOMEM
++#define ENOMEM 12
++#endif
++
++#ifndef EEXIST
++#define EEXIST 17
++#endif
++
++#ifndef ENOTDIR
++#define ENOTDIR 20
++#endif
++
++#ifndef EISDIR
++#define EISDIR 21
++#endif
++
++
++// Mode flags
++
++#ifndef S_IFMT
++#define S_IFMT                0170000
++#endif
++
++#ifndef S_IFLNK
++#define S_IFLNK               0120000
++#endif
+ 
+-#define YAFFS_TRACE_OS                        0x00000002
+-#define YAFFS_TRACE_ALLOCATE          0x00000004
+-#define YAFFS_TRACE_SCAN              0x00000008
+-#define YAFFS_TRACE_BAD_BLOCKS                0x00000010
+-#define YAFFS_TRACE_ERASE             0x00000020
+-#define YAFFS_TRACE_GC                        0x00000040
+-#define YAFFS_TRACE_WRITE             0x00000080
+-#define YAFFS_TRACE_TRACING           0x00000100
+-#define YAFFS_TRACE_DELETION          0x00000200
+-#define YAFFS_TRACE_BUFFERS           0x00000400
+-#define YAFFS_TRACE_NANDACCESS                0x00000800
+-#define YAFFS_TRACE_GC_DETAIL         0x00001000
+-#define YAFFS_TRACE_SCAN_DEBUG                0x00002000
+-#define YAFFS_TRACE_MTD                       0x00004000
+-#define YAFFS_TRACE_CHECKPOINT                0x00008000
+-
+-#define YAFFS_TRACE_VERIFY            0x00010000
+-#define YAFFS_TRACE_VERIFY_NAND               0x00020000
+-#define YAFFS_TRACE_VERIFY_FULL               0x00040000
+-#define YAFFS_TRACE_VERIFY_ALL                0x000F0000
+-
+-
+-#define YAFFS_TRACE_ERROR             0x40000000
+-#define YAFFS_TRACE_BUG                       0x80000000
+-#define YAFFS_TRACE_ALWAYS            0xF0000000
++#ifndef S_IFDIR
++#define S_IFDIR               0040000
++#endif
++
++#ifndef S_IFREG
++#define S_IFREG               0100000
++#endif
+ 
++#ifndef S_IREAD 
++#define S_IREAD               0000400
++#endif
++
++#ifndef S_IWRITE
++#define       S_IWRITE        0000200
++#endif
+ 
+-#define T(mask, p) do { if ((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0)
++#ifndef S_IEXEC
++#define       S_IEXEC 0000100
++#endif
++
++#ifndef XATTR_CREATE
++#define XATTR_CREATE 1
++#endif
++
++#ifndef XATTR_REPLACE
++#define XATTR_REPLACE 2
++#endif
++
++#ifndef R_OK
++#define R_OK  4
++#define W_OK  2
++#define X_OK  1
++#define F_OK  0
++#endif
++
++#else
++#include <errno.h>
++#include <sys/stat.h>
++#include <fcntl.h>
++#endif
++
++#endif
++
++#ifndef Y_DUMP_STACK
++#define Y_DUMP_STACK() do { } while (0)
++#endif
+ 
+ #ifndef YBUG
+-#define YBUG() do {T(YAFFS_TRACE_BUG, (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR), __LINE__)); } while (0)
++#define YBUG() do {\
++      T(YAFFS_TRACE_BUG,\
++              (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),\
++              __LINE__));\
++      Y_DUMP_STACK();\
++} while (0)
+ #endif
+ 
++
+ #endif

diff --git a/target/linux/generic/patches-3.0/503-yaffs_symlink_bug.patch b/target/linux/generic/patches-3.0/503-yaffs_symlink_bug.patch
new file mode 100644 (file)
index 0000000..dabf287
--- /dev/null
+++ b/target/linux/generic/patches-3.0/503-yaffs_symlink_bug.patch
@@ -0,0 +1,17 @@
+--- a/fs/yaffs2/yaffs_guts.c
++++ b/fs/yaffs2/yaffs_guts.c
+@@ -1709,11 +1709,11 @@ static int yaffs_change_obj_name(yaffs_o
+       }
+ 
+       /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */
+-      if (obj->my_dev->param.is_yaffs2)
++      // if (obj->my_dev->param.is_yaffs2) 
+               unlinkOp = (new_dir == obj->my_dev->unlinked_dir);
+-      else
++      /* else
+               unlinkOp = (new_dir == obj->my_dev->unlinked_dir
+-                          && obj->variant_type == YAFFS_OBJECT_TYPE_FILE);
++                          && obj->variant_type == YAFFS_OBJECT_TYPE_FILE); */
+ 
+       deleteOp = (new_dir == obj->my_dev->del_dir);
+ 

diff --git a/target/linux/generic/patches-3.0/504-yaffs_mutex_fix.patch b/target/linux/generic/patches-3.0/504-yaffs_mutex_fix.patch
new file mode 100644 (file)
index 0000000..b34b12f
--- /dev/null
+++ b/target/linux/generic/patches-3.0/504-yaffs_mutex_fix.patch
@@ -0,0 +1,20 @@
+--- a/fs/yaffs2/yaffs_vfs_glue.c
++++ b/fs/yaffs2/yaffs_vfs_glue.c
+@@ -3036,7 +3036,7 @@ static struct super_block *yaffs_interna
+         YINIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->searchContexts));
+         param->remove_obj_fn = yaffs_remove_obj_callback;
+ 
+-      init_MUTEX(&(yaffs_dev_to_lc(dev)->grossLock));
++      sema_init(&(yaffs_dev_to_lc(dev)->grossLock), 1);
+ 
+       yaffs_gross_lock(dev);
+ 
+@@ -3494,7 +3494,7 @@ static int __init init_yaffs_fs(void)
+ 
+ 
+ 
+-      init_MUTEX(&yaffs_context_lock);
++      sema_init((&yaffs_context_lock), 1);
+ 
+       /* Install the proc_fs entries */
+       my_proc_entry = create_proc_entry("yaffs",

diff --git a/target/linux/generic/patches-3.0/505-2.6.39_fix.patch b/target/linux/generic/patches-3.0/505-2.6.39_fix.patch
new file mode 100644 (file)
index 0000000..5108f7b
--- /dev/null
+++ b/target/linux/generic/patches-3.0/505-2.6.39_fix.patch
@@ -0,0 +1,147 @@
+--- a/fs/yaffs2/yaffs_vfs_glue.c
++++ b/fs/yaffs2/yaffs_vfs_glue.c
+@@ -72,7 +72,7 @@
+ #include <linux/init.h>
+ #include <linux/fs.h>
+ #include <linux/proc_fs.h>
+-#include <linux/smp_lock.h>
++#include <linux/mutex.h>
+ #include <linux/pagemap.h>
+ #include <linux/mtd/mtd.h>
+ #include <linux/interrupt.h>
+@@ -97,6 +97,8 @@
+ 
+ #include <asm/div64.h>
+ 
++static DEFINE_MUTEX(yaffs_mutex);
++
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ 
+ #include <linux/statfs.h>
+@@ -1538,7 +1540,7 @@ static loff_t yaffs_dir_llseek(struct fi
+ {
+       long long retval;
+ 
+-      lock_kernel();
++      mutex_lock(&yaffs_mutex);
+ 
+       switch (origin){
+       case 2:
+@@ -1555,7 +1557,7 @@ static loff_t yaffs_dir_llseek(struct fi
+ 
+               retval = offset;
+       }
+-      unlock_kernel();
++      mutex_unlock(&yaffs_mutex);
+       return retval;
+ }
+ 
+@@ -3087,98 +3089,52 @@ static struct super_block *yaffs_interna
+       return sb;
+ }
+ 
+-
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data,
+                                        int silent)
+ {
+       return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL;
+ }
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-static int yaffs_read_super(struct file_system_type *fs,
++static struct dentry *yaffs_read_super(struct file_system_type *fs,
+                           int flags, const char *dev_name,
+-                          void *data, struct vfsmount *mnt)
+-{
+-
+-      return get_sb_bdev(fs, flags, dev_name, data,
+-                         yaffs_internal_read_super_mtd, mnt);
+-}
+-#else
+-static struct super_block *yaffs_read_super(struct file_system_type *fs,
+-                                          int flags, const char *dev_name,
+-                                          void *data)
++                          void *data)
+ {
+ 
+-      return get_sb_bdev(fs, flags, dev_name, data,
++      return mount_bdev(fs, flags, dev_name, data,
+                          yaffs_internal_read_super_mtd);
+ }
+-#endif
+ 
+ static struct file_system_type yaffs_fs_type = {
+       .owner = THIS_MODULE,
+       .name = "yaffs",
+-      .get_sb = yaffs_read_super,
++      .mount = yaffs_read_super,
+       .kill_sb = kill_block_super,
+       .fs_flags = FS_REQUIRES_DEV,
+ };
+-#else
+-static struct super_block *yaffs_read_super(struct super_block *sb, void *data,
+-                                          int silent)
+-{
+-      return yaffs_internal_read_super(1, sb, data, silent);
+-}
+-
+-static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super,
+-                    FS_REQUIRES_DEV);
+-#endif
+-
+ 
+ #ifdef CONFIG_YAFFS_YAFFS2
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data,
+                                         int silent)
+ {
+       return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL;
+ }
+ 
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+-static int yaffs2_read_super(struct file_system_type *fs,
+-                      int flags, const char *dev_name, void *data,
+-                      struct vfsmount *mnt)
++static struct dentry *yaffs2_read_super(struct file_system_type *fs,
++                      int flags, const char *dev_name,
++                      void *data)
+ {
+-      return get_sb_bdev(fs, flags, dev_name, data,
+-                      yaffs2_internal_read_super_mtd, mnt);
++      return mount_bdev(fs, flags, dev_name, data,
++              yaffs_internal_read_super_mtd);
+ }
+-#else
+-static struct super_block *yaffs2_read_super(struct file_system_type *fs,
+-                                           int flags, const char *dev_name,
+-                                           void *data)
+-{
+-
+-      return get_sb_bdev(fs, flags, dev_name, data,
+-                         yaffs2_internal_read_super_mtd);
+-}
+-#endif
+ 
+ static struct file_system_type yaffs2_fs_type = {
+       .owner = THIS_MODULE,
+       .name = "yaffs2",
+-      .get_sb = yaffs2_read_super,
++      .mount = yaffs2_read_super,
+       .kill_sb = kill_block_super,
+       .fs_flags = FS_REQUIRES_DEV,
+ };
+-#else
+-static struct super_block *yaffs2_read_super(struct super_block *sb,
+-                                           void *data, int silent)
+-{
+-      return yaffs_internal_read_super(2, sb, data, silent);
+-}
+-
+-static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super,
+-                    FS_REQUIRES_DEV);
+-#endif
+ 
+ #endif                                /* CONFIG_YAFFS_YAFFS2 */
+ 

diff --git a/target/linux/generic/patches-3.0/510-jffs2_make_lzma_available.patch b/target/linux/generic/patches-3.0/510-jffs2_make_lzma_available.patch
new file mode 100644 (file)
index 0000000..6fa0e57
--- /dev/null
+++ b/target/linux/generic/patches-3.0/510-jffs2_make_lzma_available.patch
@@ -0,0 +1,5142 @@
+--- a/fs/jffs2/Kconfig
++++ b/fs/jffs2/Kconfig
+@@ -139,6 +139,15 @@ config JFFS2_LZO
+         This feature was added in July, 2007. Say 'N' if you need
+         compatibility with older bootloaders or kernels.
+ 
++config JFFS2_LZMA
++      bool "JFFS2 LZMA compression support" if JFFS2_COMPRESSION_OPTIONS
++      select LZMA_COMPRESS
++      select LZMA_DECOMPRESS
++      depends on JFFS2_FS
++      default n
++      help
++        JFFS2 wrapper to the LZMA C SDK
++
+ config JFFS2_RTIME
+       bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
+       depends on JFFS2_FS
+--- a/fs/jffs2/Makefile
++++ b/fs/jffs2/Makefile
+@@ -18,4 +18,7 @@ jffs2-$(CONFIG_JFFS2_RUBIN)  += compr_rub
+ jffs2-$(CONFIG_JFFS2_RTIME)   += compr_rtime.o
+ jffs2-$(CONFIG_JFFS2_ZLIB)    += compr_zlib.o
+ jffs2-$(CONFIG_JFFS2_LZO)     += compr_lzo.o
++jffs2-$(CONFIG_JFFS2_LZMA)      += compr_lzma.o
+ jffs2-$(CONFIG_JFFS2_SUMMARY)   += summary.o
++
++CFLAGS_compr_lzma.o += -Iinclude/linux -Ilib/lzma
+--- a/fs/jffs2/compr.c
++++ b/fs/jffs2/compr.c
+@@ -320,6 +320,9 @@ int __init jffs2_compressors_init(void)
+ #ifdef CONFIG_JFFS2_LZO
+       jffs2_lzo_init();
+ #endif
++#ifdef CONFIG_JFFS2_LZMA
++        jffs2_lzma_init();
++#endif
+ /* Setting default compression mode */
+ #ifdef CONFIG_JFFS2_CMODE_NONE
+       jffs2_compression_mode = JFFS2_COMPR_MODE_NONE;
+@@ -343,6 +346,9 @@ int __init jffs2_compressors_init(void)
+ int jffs2_compressors_exit(void)
+ {
+ /* Unregistering compressors */
++#ifdef CONFIG_JFFS2_LZMA
++        jffs2_lzma_exit();
++#endif
+ #ifdef CONFIG_JFFS2_LZO
+       jffs2_lzo_exit();
+ #endif
+--- a/fs/jffs2/compr.h
++++ b/fs/jffs2/compr.h
+@@ -29,9 +29,9 @@
+ #define JFFS2_DYNRUBIN_PRIORITY  20
+ #define JFFS2_LZARI_PRIORITY     30
+ #define JFFS2_RTIME_PRIORITY     50
+-#define JFFS2_ZLIB_PRIORITY      60
+-#define JFFS2_LZO_PRIORITY       80
+-
++#define JFFS2_LZMA_PRIORITY      70
++#define JFFS2_ZLIB_PRIORITY      80
++#define JFFS2_LZO_PRIORITY       90
+ 
+ #define JFFS2_RUBINMIPS_DISABLED /* RUBINs will be used only */
+ #define JFFS2_DYNRUBIN_DISABLED  /*      for decompression */
+@@ -99,5 +99,9 @@ void jffs2_zlib_exit(void);
+ int jffs2_lzo_init(void);
+ void jffs2_lzo_exit(void);
+ #endif
++#ifdef CONFIG_JFFS2_LZMA
++int jffs2_lzma_init(void);
++void jffs2_lzma_exit(void);
++#endif
+ 
+ #endif /* __JFFS2_COMPR_H__ */
+--- /dev/null
++++ b/fs/jffs2/compr_lzma.c
+@@ -0,0 +1,128 @@
++/*
++ * JFFS2 -- Journalling Flash File System, Version 2.
++ *
++ * For licensing information, see the file 'LICENCE' in this directory.
++ *
++ * JFFS2 wrapper to the LZMA C SDK
++ *
++ */
++
++#include <linux/lzma.h>
++#include "compr.h"
++
++#ifdef __KERNEL__
++      static DEFINE_MUTEX(deflate_mutex);
++#endif
++
++CLzmaEncHandle *p;
++Byte propsEncoded[LZMA_PROPS_SIZE];
++SizeT propsSize = sizeof(propsEncoded);
++
++STATIC void lzma_free_workspace(void)
++{
++      LzmaEnc_Destroy(p, &lzma_alloc, &lzma_alloc);
++}
++
++STATIC int INIT lzma_alloc_workspace(CLzmaEncProps *props)
++{
++      if ((p = (CLzmaEncHandle *)LzmaEnc_Create(&lzma_alloc)) == NULL)
++      {
++              PRINT_ERROR("Failed to allocate lzma deflate workspace\n");
++              return -ENOMEM;
++      }
++
++      if (LzmaEnc_SetProps(p, props) != SZ_OK)
++      {
++              lzma_free_workspace();
++              return -1;
++      }
++      
++      if (LzmaEnc_WriteProperties(p, propsEncoded, &propsSize) != SZ_OK)
++      {
++              lzma_free_workspace();
++              return -1;
++      }
++
++        return 0;
++}
++
++STATIC int jffs2_lzma_compress(unsigned char *data_in, unsigned char *cpage_out,
++                            uint32_t *sourcelen, uint32_t *dstlen)
++{
++      SizeT compress_size = (SizeT)(*dstlen);
++      int ret;
++
++      #ifdef __KERNEL__
++              mutex_lock(&deflate_mutex);
++      #endif
++
++      ret = LzmaEnc_MemEncode(p, cpage_out, &compress_size, data_in, *sourcelen,
++              0, NULL, &lzma_alloc, &lzma_alloc);
++
++      #ifdef __KERNEL__
++              mutex_unlock(&deflate_mutex);
++      #endif
++
++      if (ret != SZ_OK)
++              return -1;
++
++      *dstlen = (uint32_t)compress_size;
++
++      return 0;
++}
++
++STATIC int jffs2_lzma_decompress(unsigned char *data_in, unsigned char *cpage_out,
++                               uint32_t srclen, uint32_t destlen)
++{
++      int ret;
++      SizeT dl = (SizeT)destlen;
++      SizeT sl = (SizeT)srclen;
++      ELzmaStatus status;
++      
++      ret = LzmaDecode(cpage_out, &dl, data_in, &sl, propsEncoded,
++              propsSize, LZMA_FINISH_ANY, &status, &lzma_alloc);
++
++      if (ret != SZ_OK || status == LZMA_STATUS_NOT_FINISHED || dl != (SizeT)destlen)
++              return -1;
++
++      return 0;
++}
++
++static struct jffs2_compressor jffs2_lzma_comp = {
++      .priority = JFFS2_LZMA_PRIORITY,
++      .name = "lzma",
++      .compr = JFFS2_COMPR_LZMA,
++      .compress = &jffs2_lzma_compress,
++      .decompress = &jffs2_lzma_decompress,
++      .disabled = 0,
++};
++
++int INIT jffs2_lzma_init(void)
++{
++        int ret;
++      CLzmaEncProps props;
++      LzmaEncProps_Init(&props);
++
++        props.dictSize = LZMA_BEST_DICT(0x2000);
++        props.level = LZMA_BEST_LEVEL;
++        props.lc = LZMA_BEST_LC;
++        props.lp = LZMA_BEST_LP;
++        props.pb = LZMA_BEST_PB;
++        props.fb = LZMA_BEST_FB;
++
++      ret = lzma_alloc_workspace(&props);
++        if (ret < 0)
++                return ret;
++
++      ret = jffs2_register_compressor(&jffs2_lzma_comp);
++      if (ret)
++              lzma_free_workspace();
++      
++        return ret;
++}
++
++void jffs2_lzma_exit(void)
++{
++      jffs2_unregister_compressor(&jffs2_lzma_comp);
++      lzma_free_workspace();
++}
+--- a/fs/jffs2/super.c
++++ b/fs/jffs2/super.c
+@@ -255,14 +255,41 @@ static int __init init_jffs2_fs(void)
+       BUILD_BUG_ON(sizeof(struct jffs2_raw_inode) != 68);
+       BUILD_BUG_ON(sizeof(struct jffs2_raw_summary) != 32);
+ 
+-      printk(KERN_INFO "JFFS2 version 2.2."
++      printk(KERN_INFO "JFFS2 version 2.2"
+ #ifdef CONFIG_JFFS2_FS_WRITEBUFFER
+              " (NAND)"
+ #endif
+ #ifdef CONFIG_JFFS2_SUMMARY
+-             " (SUMMARY) "
++             " (SUMMARY)"
+ #endif
+-             " © 2001-2006 Red Hat, Inc.\n");
++#ifdef CONFIG_JFFS2_ZLIB
++             " (ZLIB)"
++#endif
++#ifdef CONFIG_JFFS2_LZO
++             " (LZO)"
++#endif
++#ifdef CONFIG_JFFS2_LZMA
++             " (LZMA)"
++#endif
++#ifdef CONFIG_JFFS2_RTIME
++             " (RTIME)"
++#endif
++#ifdef CONFIG_JFFS2_RUBIN
++             " (RUBIN)"
++#endif
++#ifdef  CONFIG_JFFS2_CMODE_NONE
++             " (CMODE_NONE)"
++#endif
++#ifdef CONFIG_JFFS2_CMODE_PRIORITY
++             " (CMODE_PRIORITY)"
++#endif
++#ifdef CONFIG_JFFS2_CMODE_SIZE
++             " (CMODE_SIZE)"
++#endif
++#ifdef CONFIG_JFFS2_CMODE_FAVOURLZO
++             " (CMODE_FAVOURLZO)"
++#endif
++             " (c) 2001-2006 Red Hat, Inc.\n");
+ 
+       jffs2_inode_cachep = kmem_cache_create("jffs2_i",
+                                            sizeof(struct jffs2_inode_info),
+--- a/include/linux/jffs2.h
++++ b/include/linux/jffs2.h
+@@ -46,6 +46,7 @@
+ #define JFFS2_COMPR_DYNRUBIN  0x05
+ #define JFFS2_COMPR_ZLIB      0x06
+ #define JFFS2_COMPR_LZO               0x07
++#define JFFS2_COMPR_LZMA      0x08
+ /* Compatibility flags. */
+ #define JFFS2_COMPAT_MASK 0xc000      /* What do to if an unknown nodetype is found */
+ #define JFFS2_NODE_ACCURATE 0x2000
+--- /dev/null
++++ b/include/linux/lzma.h
+@@ -0,0 +1,62 @@
++#ifndef __LZMA_H__
++#define __LZMA_H__
++
++#ifdef __KERNEL__
++      #include <linux/kernel.h>
++      #include <linux/sched.h>
++      #include <linux/slab.h>
++      #include <linux/vmalloc.h>
++      #include <linux/init.h>
++      #define LZMA_MALLOC vmalloc
++      #define LZMA_FREE vfree
++      #define PRINT_ERROR(msg) printk(KERN_WARNING #msg)
++      #define INIT __init
++      #define STATIC static
++#else
++      #include <stdint.h>
++      #include <stdlib.h>
++      #include <stdio.h>
++      #include <unistd.h>
++      #include <string.h>
++      #include <asm/types.h>
++      #include <errno.h>
++      #include <linux/jffs2.h>
++      #ifndef PAGE_SIZE
++              extern int page_size;
++              #define PAGE_SIZE page_size
++      #endif
++      #define LZMA_MALLOC malloc
++      #define LZMA_FREE free
++      #define PRINT_ERROR(msg) fprintf(stderr, msg)
++      #define INIT
++      #define STATIC
++#endif
++
++#include "lzma/LzmaDec.h"
++#include "lzma/LzmaEnc.h"
++
++#define LZMA_BEST_LEVEL (9)
++#define LZMA_BEST_LC    (0)
++#define LZMA_BEST_LP    (0)
++#define LZMA_BEST_PB    (0)
++#define LZMA_BEST_FB  (273)
++
++#define LZMA_BEST_DICT(n) (((int)((n) / 2)) * 2)
++
++static void *p_lzma_malloc(void *p, size_t size)
++{
++        if (size == 0)
++                return NULL;
++
++        return LZMA_MALLOC(size);
++}
++
++static void p_lzma_free(void *p, void *address)
++{
++        if (address != NULL)
++                LZMA_FREE(address);
++}
++
++static ISzAlloc lzma_alloc = {p_lzma_malloc, p_lzma_free};
++
++#endif
+--- /dev/null
++++ b/include/linux/lzma/LzFind.h
+@@ -0,0 +1,115 @@
++/* LzFind.h -- Match finder for LZ algorithms
++2009-04-22 : Igor Pavlov : Public domain */
++
++#ifndef __LZ_FIND_H
++#define __LZ_FIND_H
++
++#include "Types.h"
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++typedef UInt32 CLzRef;
++
++typedef struct _CMatchFinder
++{
++  Byte *buffer;
++  UInt32 pos;
++  UInt32 posLimit;
++  UInt32 streamPos;
++  UInt32 lenLimit;
++
++  UInt32 cyclicBufferPos;
++  UInt32 cyclicBufferSize; /* it must be = (historySize + 1) */
++
++  UInt32 matchMaxLen;
++  CLzRef *hash;
++  CLzRef *son;
++  UInt32 hashMask;
++  UInt32 cutValue;
++
++  Byte *bufferBase;
++  ISeqInStream *stream;
++  int streamEndWasReached;
++
++  UInt32 blockSize;
++  UInt32 keepSizeBefore;
++  UInt32 keepSizeAfter;
++
++  UInt32 numHashBytes;
++  int directInput;
++  size_t directInputRem;
++  int btMode;
++  int bigHash;
++  UInt32 historySize;
++  UInt32 fixedHashSize;
++  UInt32 hashSizeSum;
++  UInt32 numSons;
++  SRes result;
++  UInt32 crc[256];
++} CMatchFinder;
++
++#define Inline_MatchFinder_GetPointerToCurrentPos(p) ((p)->buffer)
++#define Inline_MatchFinder_GetIndexByte(p, index) ((p)->buffer[(Int32)(index)])
++
++#define Inline_MatchFinder_GetNumAvailableBytes(p) ((p)->streamPos - (p)->pos)
++
++int MatchFinder_NeedMove(CMatchFinder *p);
++Byte *MatchFinder_GetPointerToCurrentPos(CMatchFinder *p);
++void MatchFinder_MoveBlock(CMatchFinder *p);
++void MatchFinder_ReadIfRequired(CMatchFinder *p);
++
++void MatchFinder_Construct(CMatchFinder *p);
++
++/* Conditions:
++     historySize <= 3 GB
++     keepAddBufferBefore + matchMaxLen + keepAddBufferAfter < 511MB
++*/
++int MatchFinder_Create(CMatchFinder *p, UInt32 historySize,
++    UInt32 keepAddBufferBefore, UInt32 matchMaxLen, UInt32 keepAddBufferAfter,
++    ISzAlloc *alloc);
++void MatchFinder_Free(CMatchFinder *p, ISzAlloc *alloc);
++void MatchFinder_Normalize3(UInt32 subValue, CLzRef *items, UInt32 numItems);
++void MatchFinder_ReduceOffsets(CMatchFinder *p, UInt32 subValue);
++
++UInt32 * GetMatchesSpec1(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const Byte *buffer, CLzRef *son,
++    UInt32 _cyclicBufferPos, UInt32 _cyclicBufferSize, UInt32 _cutValue,
++    UInt32 *distances, UInt32 maxLen);
++
++/*
++Conditions:
++  Mf_GetNumAvailableBytes_Func must be called before each Mf_GetMatchLen_Func.
++  Mf_GetPointerToCurrentPos_Func's result must be used only before any other function
++*/
++
++typedef void (*Mf_Init_Func)(void *object);
++typedef Byte (*Mf_GetIndexByte_Func)(void *object, Int32 index);
++typedef UInt32 (*Mf_GetNumAvailableBytes_Func)(void *object);
++typedef const Byte * (*Mf_GetPointerToCurrentPos_Func)(void *object);
++typedef UInt32 (*Mf_GetMatches_Func)(void *object, UInt32 *distances);
++typedef void (*Mf_Skip_Func)(void *object, UInt32);
++
++typedef struct _IMatchFinder
++{
++  Mf_Init_Func Init;
++  Mf_GetIndexByte_Func GetIndexByte;
++  Mf_GetNumAvailableBytes_Func GetNumAvailableBytes;
++  Mf_GetPointerToCurrentPos_Func GetPointerToCurrentPos;
++  Mf_GetMatches_Func GetMatches;
++  Mf_Skip_Func Skip;
++} IMatchFinder;
++
++void MatchFinder_CreateVTable(CMatchFinder *p, IMatchFinder *vTable);
++
++void MatchFinder_Init(CMatchFinder *p);
++UInt32 Bt3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances);
++UInt32 Hc3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances);
++void Bt3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num);
++void Hc3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num);
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif
+--- /dev/null
++++ b/include/linux/lzma/LzHash.h
+@@ -0,0 +1,54 @@
++/* LzHash.h -- HASH functions for LZ algorithms
++2009-02-07 : Igor Pavlov : Public domain */
++
++#ifndef __LZ_HASH_H
++#define __LZ_HASH_H
++
++#define kHash2Size (1 << 10)
++#define kHash3Size (1 << 16)
++#define kHash4Size (1 << 20)
++
++#define kFix3HashSize (kHash2Size)
++#define kFix4HashSize (kHash2Size + kHash3Size)
++#define kFix5HashSize (kHash2Size + kHash3Size + kHash4Size)
++
++#define HASH2_CALC hashValue = cur[0] | ((UInt32)cur[1] << 8);
++
++#define HASH3_CALC { \
++  UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
++  hash2Value = temp & (kHash2Size - 1); \
++  hashValue = (temp ^ ((UInt32)cur[2] << 8)) & p->hashMask; }
++
++#define HASH4_CALC { \
++  UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
++  hash2Value = temp & (kHash2Size - 1); \
++  hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
++  hashValue = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)) & p->hashMask; }
++
++#define HASH5_CALC { \
++  UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
++  hash2Value = temp & (kHash2Size - 1); \
++  hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
++  hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)); \
++  hashValue = (hash4Value ^ (p->crc[cur[4]] << 3)) & p->hashMask; \
++  hash4Value &= (kHash4Size - 1); }
++
++/* #define HASH_ZIP_CALC hashValue = ((cur[0] | ((UInt32)cur[1] << 8)) ^ p->crc[cur[2]]) & 0xFFFF; */
++#define HASH_ZIP_CALC hashValue = ((cur[2] | ((UInt32)cur[0] << 8)) ^ p->crc[cur[1]]) & 0xFFFF;
++
++
++#define MT_HASH2_CALC \
++  hash2Value = (p->crc[cur[0]] ^ cur[1]) & (kHash2Size - 1);
++
++#define MT_HASH3_CALC { \
++  UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
++  hash2Value = temp & (kHash2Size - 1); \
++  hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); }
++
++#define MT_HASH4_CALC { \
++  UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
++  hash2Value = temp & (kHash2Size - 1); \
++  hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
++  hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)) & (kHash4Size - 1); }
++
++#endif
+--- /dev/null
++++ b/include/linux/lzma/LzmaDec.h
+@@ -0,0 +1,231 @@
++/* LzmaDec.h -- LZMA Decoder
++2009-02-07 : Igor Pavlov : Public domain */
++
++#ifndef __LZMA_DEC_H
++#define __LZMA_DEC_H
++
++#include "Types.h"
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++/* #define _LZMA_PROB32 */
++/* _LZMA_PROB32 can increase the speed on some CPUs,
++   but memory usage for CLzmaDec::probs will be doubled in that case */
++
++#ifdef _LZMA_PROB32
++#define CLzmaProb UInt32
++#else
++#define CLzmaProb UInt16
++#endif
++
++
++/* ---------- LZMA Properties ---------- */
++
++#define LZMA_PROPS_SIZE 5
++
++typedef struct _CLzmaProps
++{
++  unsigned lc, lp, pb;
++  UInt32 dicSize;
++} CLzmaProps;
++
++/* LzmaProps_Decode - decodes properties
++Returns:
++  SZ_OK
++  SZ_ERROR_UNSUPPORTED - Unsupported properties
++*/
++
++SRes LzmaProps_Decode(CLzmaProps *p, const Byte *data, unsigned size);
++
++
++/* ---------- LZMA Decoder state ---------- */
++
++/* LZMA_REQUIRED_INPUT_MAX = number of required input bytes for worst case.
++   Num bits = log2((2^11 / 31) ^ 22) + 26 < 134 + 26 = 160; */
++
++#define LZMA_REQUIRED_INPUT_MAX 20
++
++typedef struct
++{
++  CLzmaProps prop;
++  CLzmaProb *probs;
++  Byte *dic;
++  const Byte *buf;
++  UInt32 range, code;
++  SizeT dicPos;
++  SizeT dicBufSize;
++  UInt32 processedPos;
++  UInt32 checkDicSize;
++  unsigned state;
++  UInt32 reps[4];
++  unsigned remainLen;
++  int needFlush;
++  int needInitState;
++  UInt32 numProbs;
++  unsigned tempBufSize;
++  Byte tempBuf[LZMA_REQUIRED_INPUT_MAX];
++} CLzmaDec;
++
++#define LzmaDec_Construct(p) { (p)->dic = 0; (p)->probs = 0; }
++
++void LzmaDec_Init(CLzmaDec *p);
++
++/* There are two types of LZMA streams:
++     0) Stream with end mark. That end mark adds about 6 bytes to compressed size.
++     1) Stream without end mark. You must know exact uncompressed size to decompress such stream. */
++
++typedef enum
++{
++  LZMA_FINISH_ANY,   /* finish at any point */
++  LZMA_FINISH_END    /* block must be finished at the end */
++} ELzmaFinishMode;
++
++/* ELzmaFinishMode has meaning only if the decoding reaches output limit !!!
++
++   You must use LZMA_FINISH_END, when you know that current output buffer
++   covers last bytes of block. In other cases you must use LZMA_FINISH_ANY.
++
++   If LZMA decoder sees end marker before reaching output limit, it returns SZ_OK,
++   and output value of destLen will be less than output buffer size limit.
++   You can check status result also.
++
++   You can use multiple checks to test data integrity after full decompression:
++     1) Check Result and "status" variable.
++     2) Check that output(destLen) = uncompressedSize, if you know real uncompressedSize.
++     3) Check that output(srcLen) = compressedSize, if you know real compressedSize.
++        You must use correct finish mode in that case. */
++
++typedef enum
++{
++  LZMA_STATUS_NOT_SPECIFIED,               /* use main error code instead */
++  LZMA_STATUS_FINISHED_WITH_MARK,          /* stream was finished with end mark. */
++  LZMA_STATUS_NOT_FINISHED,                /* stream was not finished */
++  LZMA_STATUS_NEEDS_MORE_INPUT,            /* you must provide more input bytes */
++  LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK  /* there is probability that stream was finished without end mark */
++} ELzmaStatus;
++
++/* ELzmaStatus is used only as output value for function call */
++
++
++/* ---------- Interfaces ---------- */
++
++/* There are 3 levels of interfaces:
++     1) Dictionary Interface
++     2) Buffer Interface
++     3) One Call Interface
++   You can select any of these interfaces, but don't mix functions from different
++   groups for same object. */
++
++
++/* There are two variants to allocate state for Dictionary Interface:
++     1) LzmaDec_Allocate / LzmaDec_Free
++     2) LzmaDec_AllocateProbs / LzmaDec_FreeProbs
++   You can use variant 2, if you set dictionary buffer manually.
++   For Buffer Interface you must always use variant 1.
++
++LzmaDec_Allocate* can return:
++  SZ_OK
++  SZ_ERROR_MEM         - Memory allocation error
++  SZ_ERROR_UNSUPPORTED - Unsupported properties
++*/
++   
++SRes LzmaDec_AllocateProbs(CLzmaDec *p, const Byte *props, unsigned propsSize, ISzAlloc *alloc);
++void LzmaDec_FreeProbs(CLzmaDec *p, ISzAlloc *alloc);
++
++SRes LzmaDec_Allocate(CLzmaDec *state, const Byte *prop, unsigned propsSize, ISzAlloc *alloc);
++void LzmaDec_Free(CLzmaDec *state, ISzAlloc *alloc);
++
++/* ---------- Dictionary Interface ---------- */
++
++/* You can use it, if you want to eliminate the overhead for data copying from
++   dictionary to some other external buffer.
++   You must work with CLzmaDec variables directly in this interface.
++
++   STEPS:
++     LzmaDec_Constr()
++     LzmaDec_Allocate()
++     for (each new stream)
++     {
++       LzmaDec_Init()
++       while (it needs more decompression)
++       {
++         LzmaDec_DecodeToDic()
++         use data from CLzmaDec::dic and update CLzmaDec::dicPos
++       }
++     }
++     LzmaDec_Free()
++*/
++
++/* LzmaDec_DecodeToDic
++   
++   The decoding to internal dictionary buffer (CLzmaDec::dic).
++   You must manually update CLzmaDec::dicPos, if it reaches CLzmaDec::dicBufSize !!!
++
++finishMode:
++  It has meaning only if the decoding reaches output limit (dicLimit).
++  LZMA_FINISH_ANY - Decode just dicLimit bytes.
++  LZMA_FINISH_END - Stream must be finished after dicLimit.
++
++Returns:
++  SZ_OK
++    status:
++      LZMA_STATUS_FINISHED_WITH_MARK
++      LZMA_STATUS_NOT_FINISHED
++      LZMA_STATUS_NEEDS_MORE_INPUT
++      LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK
++  SZ_ERROR_DATA - Data error
++*/
++
++SRes LzmaDec_DecodeToDic(CLzmaDec *p, SizeT dicLimit,
++    const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status);
++
++
++/* ---------- Buffer Interface ---------- */
++
++/* It's zlib-like interface.
++   See LzmaDec_DecodeToDic description for information about STEPS and return results,
++   but you must use LzmaDec_DecodeToBuf instead of LzmaDec_DecodeToDic and you don't need
++   to work with CLzmaDec variables manually.
++
++finishMode:
++  It has meaning only if the decoding reaches output limit (*destLen).
++  LZMA_FINISH_ANY - Decode just destLen bytes.
++  LZMA_FINISH_END - Stream must be finished after (*destLen).
++*/
++
++SRes LzmaDec_DecodeToBuf(CLzmaDec *p, Byte *dest, SizeT *destLen,
++    const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status);
++
++
++/* ---------- One Call Interface ---------- */
++
++/* LzmaDecode
++
++finishMode:
++  It has meaning only if the decoding reaches output limit (*destLen).
++  LZMA_FINISH_ANY - Decode just destLen bytes.
++  LZMA_FINISH_END - Stream must be finished after (*destLen).
++
++Returns:
++  SZ_OK
++    status:
++      LZMA_STATUS_FINISHED_WITH_MARK
++      LZMA_STATUS_NOT_FINISHED
++      LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK
++  SZ_ERROR_DATA - Data error
++  SZ_ERROR_MEM  - Memory allocation error
++  SZ_ERROR_UNSUPPORTED - Unsupported properties
++  SZ_ERROR_INPUT_EOF - It needs more bytes in input buffer (src).
++*/
++
++SRes LzmaDecode(Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen,
++    const Byte *propData, unsigned propSize, ELzmaFinishMode finishMode,
++    ELzmaStatus *status, ISzAlloc *alloc);
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif
+--- /dev/null
++++ b/include/linux/lzma/LzmaEnc.h
+@@ -0,0 +1,80 @@
++/*  LzmaEnc.h -- LZMA Encoder
++2009-02-07 : Igor Pavlov : Public domain */
++
++#ifndef __LZMA_ENC_H
++#define __LZMA_ENC_H
++
++#include "Types.h"
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#define LZMA_PROPS_SIZE 5
++
++typedef struct _CLzmaEncProps
++{
++  int level;       /*  0 <= level <= 9 */
++  UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version
++                      (1 << 12) <= dictSize <= (1 << 30) for 64-bit version
++                       default = (1 << 24) */
++  int lc;          /* 0 <= lc <= 8, default = 3 */
++  int lp;          /* 0 <= lp <= 4, default = 0 */
++  int pb;          /* 0 <= pb <= 4, default = 2 */
++  int algo;        /* 0 - fast, 1 - normal, default = 1 */
++  int fb;          /* 5 <= fb <= 273, default = 32 */
++  int btMode;      /* 0 - hashChain Mode, 1 - binTree mode - normal, default = 1 */
++  int numHashBytes; /* 2, 3 or 4, default = 4 */
++  UInt32 mc;        /* 1 <= mc <= (1 << 30), default = 32 */
++  unsigned writeEndMark;  /* 0 - do not write EOPM, 1 - write EOPM, default = 0 */
++  int numThreads;  /* 1 or 2, default = 2 */
++} CLzmaEncProps;
++
++void LzmaEncProps_Init(CLzmaEncProps *p);
++void LzmaEncProps_Normalize(CLzmaEncProps *p);
++UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2);
++
++
++/* ---------- CLzmaEncHandle Interface ---------- */
++
++/* LzmaEnc_* functions can return the following exit codes:
++Returns:
++  SZ_OK           - OK
++  SZ_ERROR_MEM    - Memory allocation error
++  SZ_ERROR_PARAM  - Incorrect paramater in props
++  SZ_ERROR_WRITE  - Write callback error.
++  SZ_ERROR_PROGRESS - some break from progress callback
++  SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version)
++*/
++
++typedef void * CLzmaEncHandle;
++
++CLzmaEncHandle LzmaEnc_Create(ISzAlloc *alloc);
++void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAlloc *alloc, ISzAlloc *allocBig);
++SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props);
++SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size);
++SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *inStream,
++    ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);
++SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
++    int writeEndMark, ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);
++
++/* ---------- One Call Interface ---------- */
++
++/* LzmaEncode
++Return code:
++  SZ_OK               - OK
++  SZ_ERROR_MEM        - Memory allocation error
++  SZ_ERROR_PARAM      - Incorrect paramater
++  SZ_ERROR_OUTPUT_EOF - output buffer overflow
++  SZ_ERROR_THREAD     - errors in multithreading functions (only for Mt version)
++*/
++
++SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
++    const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark,
++    ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif
+--- /dev/null
++++ b/include/linux/lzma/Types.h
+@@ -0,0 +1,226 @@
++/* Types.h -- Basic types
++2009-11-23 : Igor Pavlov : Public domain */
++
++#ifndef __7Z_TYPES_H
++#define __7Z_TYPES_H
++
++#include <stddef.h>
++
++#ifdef _WIN32
++#include <windows.h>
++#endif
++
++#ifndef EXTERN_C_BEGIN
++#ifdef __cplusplus
++#define EXTERN_C_BEGIN extern "C" {
++#define EXTERN_C_END }
++#else
++#define EXTERN_C_BEGIN
++#define EXTERN_C_END
++#endif
++#endif
++
++EXTERN_C_BEGIN
++
++#define SZ_OK 0
++
++#define SZ_ERROR_DATA 1
++#define SZ_ERROR_MEM 2
++#define SZ_ERROR_CRC 3
++#define SZ_ERROR_UNSUPPORTED 4
++#define SZ_ERROR_PARAM 5
++#define SZ_ERROR_INPUT_EOF 6
++#define SZ_ERROR_OUTPUT_EOF 7
++#define SZ_ERROR_READ 8
++#define SZ_ERROR_WRITE 9
++#define SZ_ERROR_PROGRESS 10
++#define SZ_ERROR_FAIL 11
++#define SZ_ERROR_THREAD 12
++
++#define SZ_ERROR_ARCHIVE 16
++#define SZ_ERROR_NO_ARCHIVE 17
++
++typedef int SRes;
++
++#ifdef _WIN32
++typedef DWORD WRes;
++#else
++typedef int WRes;
++#endif
++
++#ifndef RINOK
++#define RINOK(x) { int __result__ = (x); if (__result__ != 0) return __result__; }
++#endif
++
++typedef unsigned char Byte;
++typedef short Int16;
++typedef unsigned short UInt16;
++
++#ifdef _LZMA_UINT32_IS_ULONG
++typedef long Int32;
++typedef unsigned long UInt32;
++#else
++typedef int Int32;
++typedef unsigned int UInt32;
++#endif
++
++#ifdef _SZ_NO_INT_64
++
++/* define _SZ_NO_INT_64, if your compiler doesn't support 64-bit integers.
++   NOTES: Some code will work incorrectly in that case! */
++
++typedef long Int64;
++typedef unsigned long UInt64;
++
++#else
++
++#if defined(_MSC_VER) || defined(__BORLANDC__)
++typedef __int64 Int64;
++typedef unsigned __int64 UInt64;
++#else
++typedef long long int Int64;
++typedef unsigned long long int UInt64;
++#endif
++
++#endif
++
++#ifdef _LZMA_NO_SYSTEM_SIZE_T
++typedef UInt32 SizeT;
++#else
++typedef size_t SizeT;
++#endif
++
++typedef int Bool;
++#define True 1
++#define False 0
++
++
++#ifdef _WIN32
++#define MY_STD_CALL __stdcall
++#else
++#define MY_STD_CALL
++#endif
++
++#ifdef _MSC_VER
++
++#if _MSC_VER >= 1300
++#define MY_NO_INLINE __declspec(noinline)
++#else
++#define MY_NO_INLINE
++#endif
++
++#define MY_CDECL __cdecl
++#define MY_FAST_CALL __fastcall
++
++#else
++
++#define MY_CDECL
++#define MY_FAST_CALL
++
++#endif
++
++
++/* The following interfaces use first parameter as pointer to structure */
++
++typedef struct
++{
++  SRes (*Read)(void *p, void *buf, size_t *size);
++    /* if (input(*size) != 0 && output(*size) == 0) means end_of_stream.
++       (output(*size) < input(*size)) is allowed */
++} ISeqInStream;
++
++/* it can return SZ_ERROR_INPUT_EOF */
++SRes SeqInStream_Read(ISeqInStream *stream, void *buf, size_t size);
++SRes SeqInStream_Read2(ISeqInStream *stream, void *buf, size_t size, SRes errorType);
++SRes SeqInStream_ReadByte(ISeqInStream *stream, Byte *buf);
++
++typedef struct
++{
++  size_t (*Write)(void *p, const void *buf, size_t size);
++    /* Returns: result - the number of actually written bytes.
++       (result < size) means error */
++} ISeqOutStream;
++
++typedef enum
++{
++  SZ_SEEK_SET = 0,
++  SZ_SEEK_CUR = 1,
++  SZ_SEEK_END = 2
++} ESzSeek;
++
++typedef struct
++{
++  SRes (*Read)(void *p, void *buf, size_t *size);  /* same as ISeqInStream::Read */
++  SRes (*Seek)(void *p, Int64 *pos, ESzSeek origin);
++} ISeekInStream;
++
++typedef struct
++{
++  SRes (*Look)(void *p, void **buf, size_t *size);
++    /* if (input(*size) != 0 && output(*size) == 0) means end_of_stream.
++       (output(*size) > input(*size)) is not allowed
++       (output(*size) < input(*size)) is allowed */
++  SRes (*Skip)(void *p, size_t offset);
++    /* offset must be <= output(*size) of Look */
++
++  SRes (*Read)(void *p, void *buf, size_t *size);
++    /* reads directly (without buffer). It's same as ISeqInStream::Read */
++  SRes (*Seek)(void *p, Int64 *pos, ESzSeek origin);
++} ILookInStream;
++
++SRes LookInStream_LookRead(ILookInStream *stream, void *buf, size_t *size);
++SRes LookInStream_SeekTo(ILookInStream *stream, UInt64 offset);
++
++/* reads via ILookInStream::Read */
++SRes LookInStream_Read2(ILookInStream *stream, void *buf, size_t size, SRes errorType);
++SRes LookInStream_Read(ILookInStream *stream, void *buf, size_t size);
++
++#define LookToRead_BUF_SIZE (1 << 14)
++
++typedef struct
++{
++  ILookInStream s;
++  ISeekInStream *realStream;
++  size_t pos;
++  size_t size;
++  Byte buf[LookToRead_BUF_SIZE];
++} CLookToRead;
++
++void LookToRead_CreateVTable(CLookToRead *p, int lookahead);
++void LookToRead_Init(CLookToRead *p);
++
++typedef struct
++{
++  ISeqInStream s;
++  ILookInStream *realStream;
++} CSecToLook;
++
++void SecToLook_CreateVTable(CSecToLook *p);
++
++typedef struct
++{
++  ISeqInStream s;
++  ILookInStream *realStream;
++} CSecToRead;
++
++void SecToRead_CreateVTable(CSecToRead *p);
++
++typedef struct
++{
++  SRes (*Progress)(void *p, UInt64 inSize, UInt64 outSize);
++    /* Returns: result. (result != SZ_OK) means break.
++       Value (UInt64)(Int64)-1 for size means unknown value. */
++} ICompressProgress;
++
++typedef struct
++{
++  void *(*Alloc)(void *p, size_t size);
++  void (*Free)(void *p, void *address); /* address can be 0 */
++} ISzAlloc;
++
++#define IAlloc_Alloc(p, size) (p)->Alloc((p), size)
++#define IAlloc_Free(p, a) (p)->Free((p), a)
++
++EXTERN_C_END
++
++#endif
+--- a/lib/Kconfig
++++ b/lib/Kconfig
+@@ -101,6 +101,12 @@ config LZO_DECOMPRESS
+ 
+ source "lib/xz/Kconfig"
+ 
++config LZMA_COMPRESS
++    tristate
++
++config LZMA_DECOMPRESS
++    tristate
++
+ #
+ # These all provide a common interface (hence the apparent duplication with
+ # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.)
+--- a/lib/Makefile
++++ b/lib/Makefile
+@@ -2,6 +2,16 @@
+ # Makefile for some libs needed in the kernel.
+ #
+ 
++ifdef CONFIG_JFFS2_ZLIB
++      CONFIG_ZLIB_INFLATE:=y
++      CONFIG_ZLIB_DEFLATE:=y
++endif
++
++ifdef CONFIG_JFFS2_LZMA
++      CONFIG_LZMA_DECOMPRESS:=y
++      CONFIG_LZMA_COMPRESS:=y
++endif
++
+ ifdef CONFIG_FUNCTION_TRACER
+ ORIG_CFLAGS := $(KBUILD_CFLAGS)
+ KBUILD_CFLAGS = $(subst -pg,,$(ORIG_CFLAGS))
+@@ -71,6 +81,8 @@ obj-$(CONFIG_LZO_COMPRESS) += lzo/
+ obj-$(CONFIG_LZO_DECOMPRESS) += lzo/
+ obj-$(CONFIG_XZ_DEC) += xz/
+ obj-$(CONFIG_RAID6_PQ) += raid6/
++obj-$(CONFIG_LZMA_COMPRESS) += lzma/
++obj-$(CONFIG_LZMA_DECOMPRESS) += lzma/
+ 
+ lib-$(CONFIG_DECOMPRESS_GZIP) += decompress_inflate.o
+ lib-$(CONFIG_DECOMPRESS_BZIP2) += decompress_bunzip2.o
+--- /dev/null
++++ b/lib/lzma/LzFind.c
+@@ -0,0 +1,761 @@
++/* LzFind.c -- Match finder for LZ algorithms
++2009-04-22 : Igor Pavlov : Public domain */
++
++#include <string.h>
++
++#include "LzFind.h"
++#include "LzHash.h"
++
++#define kEmptyHashValue 0
++#define kMaxValForNormalize ((UInt32)0xFFFFFFFF)
++#define kNormalizeStepMin (1 << 10) /* it must be power of 2 */
++#define kNormalizeMask (~(kNormalizeStepMin - 1))
++#define kMaxHistorySize ((UInt32)3 << 30)
++
++#define kStartMaxLen 3
++
++static void LzInWindow_Free(CMatchFinder *p, ISzAlloc *alloc)
++{
++  if (!p->directInput)
++  {
++    alloc->Free(alloc, p->bufferBase);
++    p->bufferBase = 0;
++  }
++}
++
++/* keepSizeBefore + keepSizeAfter + keepSizeReserv must be < 4G) */
++
++static int LzInWindow_Create(CMatchFinder *p, UInt32 keepSizeReserv, ISzAlloc *alloc)
++{
++  UInt32 blockSize = p->keepSizeBefore + p->keepSizeAfter + keepSizeReserv;
++  if (p->directInput)
++  {
++    p->blockSize = blockSize;
++    return 1;
++  }
++  if (p->bufferBase == 0 || p->blockSize != blockSize)
++  {
++    LzInWindow_Free(p, alloc);
++    p->blockSize = blockSize;
++    p->bufferBase = (Byte *)alloc->Alloc(alloc, (size_t)blockSize);
++  }
++  return (p->bufferBase != 0);
++}
++
++Byte *MatchFinder_GetPointerToCurrentPos(CMatchFinder *p) { return p->buffer; }
++Byte MatchFinder_GetIndexByte(CMatchFinder *p, Int32 index) { return p->buffer[index]; }
++
++UInt32 MatchFinder_GetNumAvailableBytes(CMatchFinder *p) { return p->streamPos - p->pos; }
++
++void MatchFinder_ReduceOffsets(CMatchFinder *p, UInt32 subValue)
++{
++  p->posLimit -= subValue;
++  p->pos -= subValue;
++  p->streamPos -= subValue;
++}
++
++static void MatchFinder_ReadBlock(CMatchFinder *p)
++{
++  if (p->streamEndWasReached || p->result != SZ_OK)
++    return;
++  if (p->directInput)
++  {
++    UInt32 curSize = 0xFFFFFFFF - p->streamPos;
++    if (curSize > p->directInputRem)
++      curSize = (UInt32)p->directInputRem;
++    p->directInputRem -= curSize;
++    p->streamPos += curSize;
++    if (p->directInputRem == 0)
++      p->streamEndWasReached = 1;
++    return;
++  }
++  for (;;)
++  {
++    Byte *dest = p->buffer + (p->streamPos - p->pos);
++    size_t size = (p->bufferBase + p->blockSize - dest);
++    if (size == 0)
++      return;
++    p->result = p->stream->Read(p->stream, dest, &size);
++    if (p->result != SZ_OK)
++      return;
++    if (size == 0)
++    {
++      p->streamEndWasReached = 1;
++      return;
++    }
++    p->streamPos += (UInt32)size;
++    if (p->streamPos - p->pos > p->keepSizeAfter)
++      return;
++  }
++}
++
++void MatchFinder_MoveBlock(CMatchFinder *p)
++{
++  memmove(p->bufferBase,
++    p->buffer - p->keepSizeBefore,
++    (size_t)(p->streamPos - p->pos + p->keepSizeBefore));
++  p->buffer = p->bufferBase + p->keepSizeBefore;
++}
++
++int MatchFinder_NeedMove(CMatchFinder *p)
++{
++  if (p->directInput)
++    return 0;
++  /* if (p->streamEndWasReached) return 0; */
++  return ((size_t)(p->bufferBase + p->blockSize - p->buffer) <= p->keepSizeAfter);
++}
++
++void MatchFinder_ReadIfRequired(CMatchFinder *p)
++{
++  if (p->streamEndWasReached)
++    return;
++  if (p->keepSizeAfter >= p->streamPos - p->pos)
++    MatchFinder_ReadBlock(p);
++}
++
++static void MatchFinder_CheckAndMoveAndRead(CMatchFinder *p)
++{
++  if (MatchFinder_NeedMove(p))
++    MatchFinder_MoveBlock(p);
++  MatchFinder_ReadBlock(p);
++}
++
++static void MatchFinder_SetDefaultSettings(CMatchFinder *p)
++{
++  p->cutValue = 32;
++  p->btMode = 1;
++  p->numHashBytes = 4;
++  p->bigHash = 0;
++}
++
++#define kCrcPoly 0xEDB88320
++
++void MatchFinder_Construct(CMatchFinder *p)
++{
++  UInt32 i;
++  p->bufferBase = 0;
++  p->directInput = 0;
++  p->hash = 0;
++  MatchFinder_SetDefaultSettings(p);
++
++  for (i = 0; i < 256; i++)
++  {
++    UInt32 r = i;
++    int j;
++    for (j = 0; j < 8; j++)
++      r = (r >> 1) ^ (kCrcPoly & ~((r & 1) - 1));
++    p->crc[i] = r;
++  }
++}
++
++static void MatchFinder_FreeThisClassMemory(CMatchFinder *p, ISzAlloc *alloc)
++{
++  alloc->Free(alloc, p->hash);
++  p->hash = 0;
++}
++
++void MatchFinder_Free(CMatchFinder *p, ISzAlloc *alloc)
++{
++  MatchFinder_FreeThisClassMemory(p, alloc);
++  LzInWindow_Free(p, alloc);
++}
++
++static CLzRef* AllocRefs(UInt32 num, ISzAlloc *alloc)
++{
++  size_t sizeInBytes = (size_t)num * sizeof(CLzRef);
++  if (sizeInBytes / sizeof(CLzRef) != num)
++    return 0;
++  return (CLzRef *)alloc->Alloc(alloc, sizeInBytes);
++}
++
++int MatchFinder_Create(CMatchFinder *p, UInt32 historySize,
++    UInt32 keepAddBufferBefore, UInt32 matchMaxLen, UInt32 keepAddBufferAfter,
++    ISzAlloc *alloc)
++{
++  UInt32 sizeReserv;
++  if (historySize > kMaxHistorySize)
++  {
++    MatchFinder_Free(p, alloc);
++    return 0;
++  }
++  sizeReserv = historySize >> 1;
++  if (historySize > ((UInt32)2 << 30))
++    sizeReserv = historySize >> 2;
++  sizeReserv += (keepAddBufferBefore + matchMaxLen + keepAddBufferAfter) / 2 + (1 << 19);
++
++  p->keepSizeBefore = historySize + keepAddBufferBefore + 1;
++  p->keepSizeAfter = matchMaxLen + keepAddBufferAfter;
++  /* we need one additional byte, since we use MoveBlock after pos++ and before dictionary using */
++  if (LzInWindow_Create(p, sizeReserv, alloc))
++  {
++    UInt32 newCyclicBufferSize = historySize + 1;
++    UInt32 hs;
++    p->matchMaxLen = matchMaxLen;
++    {
++      p->fixedHashSize = 0;
++      if (p->numHashBytes == 2)
++        hs = (1 << 16) - 1;
++      else
++      {
++        hs = historySize - 1;
++        hs |= (hs >> 1);
++        hs |= (hs >> 2);
++        hs |= (hs >> 4);
++        hs |= (hs >> 8);
++        hs >>= 1;
++        hs |= 0xFFFF; /* don't change it! It's required for Deflate */
++        if (hs > (1 << 24))
++        {
++          if (p->numHashBytes == 3)
++            hs = (1 << 24) - 1;
++          else
++            hs >>= 1;
++        }
++      }
++      p->hashMask = hs;
++      hs++;
++      if (p->numHashBytes > 2) p->fixedHashSize += kHash2Size;
++      if (p->numHashBytes > 3) p->fixedHashSize += kHash3Size;
++      if (p->numHashBytes > 4) p->fixedHashSize += kHash4Size;
++      hs += p->fixedHashSize;
++    }
++
++    {
++      UInt32 prevSize = p->hashSizeSum + p->numSons;
++      UInt32 newSize;
++      p->historySize = historySize;
++      p->hashSizeSum = hs;
++      p->cyclicBufferSize = newCyclicBufferSize;
++      p->numSons = (p->btMode ? newCyclicBufferSize * 2 : newCyclicBufferSize);
++      newSize = p->hashSizeSum + p->numSons;
++      if (p->hash != 0 && prevSize == newSize)
++        return 1;
++      MatchFinder_FreeThisClassMemory(p, alloc);
++      p->hash = AllocRefs(newSize, alloc);
++      if (p->hash != 0)
++      {
++        p->son = p->hash + p->hashSizeSum;
++        return 1;
++      }
++    }
++  }
++  MatchFinder_Free(p, alloc);
++  return 0;
++}
++
++static void MatchFinder_SetLimits(CMatchFinder *p)
++{
++  UInt32 limit = kMaxValForNormalize - p->pos;
++  UInt32 limit2 = p->cyclicBufferSize - p->cyclicBufferPos;
++  if (limit2 < limit)
++    limit = limit2;
++  limit2 = p->streamPos - p->pos;
++  if (limit2 <= p->keepSizeAfter)
++  {
++    if (limit2 > 0)
++      limit2 = 1;
++  }
++  else
++    limit2 -= p->keepSizeAfter;
++  if (limit2 < limit)
++    limit = limit2;
++  {
++    UInt32 lenLimit = p->streamPos - p->pos;
++    if (lenLimit > p->matchMaxLen)
++      lenLimit = p->matchMaxLen;
++    p->lenLimit = lenLimit;
++  }
++  p->posLimit = p->pos + limit;
++}
++
++void MatchFinder_Init(CMatchFinder *p)
++{
++  UInt32 i;
++  for (i = 0; i < p->hashSizeSum; i++)
++    p->hash[i] = kEmptyHashValue;
++  p->cyclicBufferPos = 0;
++  p->buffer = p->bufferBase;
++  p->pos = p->streamPos = p->cyclicBufferSize;
++  p->result = SZ_OK;
++  p->streamEndWasReached = 0;
++  MatchFinder_ReadBlock(p);
++  MatchFinder_SetLimits(p);
++}
++
++static UInt32 MatchFinder_GetSubValue(CMatchFinder *p)
++{
++  return (p->pos - p->historySize - 1) & kNormalizeMask;
++}
++
++void MatchFinder_Normalize3(UInt32 subValue, CLzRef *items, UInt32 numItems)
++{
++  UInt32 i;
++  for (i = 0; i < numItems; i++)
++  {
++    UInt32 value = items[i];
++    if (value <= subValue)
++      value = kEmptyHashValue;
++    else
++      value -= subValue;
++    items[i] = value;
++  }
++}
++
++static void MatchFinder_Normalize(CMatchFinder *p)
++{
++  UInt32 subValue = MatchFinder_GetSubValue(p);
++  MatchFinder_Normalize3(subValue, p->hash, p->hashSizeSum + p->numSons);
++  MatchFinder_ReduceOffsets(p, subValue);
++}
++
++static void MatchFinder_CheckLimits(CMatchFinder *p)
++{
++  if (p->pos == kMaxValForNormalize)
++    MatchFinder_Normalize(p);
++  if (!p->streamEndWasReached && p->keepSizeAfter == p->streamPos - p->pos)
++    MatchFinder_CheckAndMoveAndRead(p);
++  if (p->cyclicBufferPos == p->cyclicBufferSize)
++    p->cyclicBufferPos = 0;
++  MatchFinder_SetLimits(p);
++}
++
++static UInt32 * Hc_GetMatchesSpec(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const Byte *cur, CLzRef *son,
++    UInt32 _cyclicBufferPos, UInt32 _cyclicBufferSize, UInt32 cutValue,
++    UInt32 *distances, UInt32 maxLen)
++{
++  son[_cyclicBufferPos] = curMatch;
++  for (;;)
++  {
++    UInt32 delta = pos - curMatch;
++    if (cutValue-- == 0 || delta >= _cyclicBufferSize)
++      return distances;
++    {
++      const Byte *pb = cur - delta;
++      curMatch = son[_cyclicBufferPos - delta + ((delta > _cyclicBufferPos) ? _cyclicBufferSize : 0)];
++      if (pb[maxLen] == cur[maxLen] && *pb == *cur)
++      {
++        UInt32 len = 0;
++        while (++len != lenLimit)
++          if (pb[len] != cur[len])
++            break;
++        if (maxLen < len)
++        {
++          *distances++ = maxLen = len;
++          *distances++ = delta - 1;
++          if (len == lenLimit)
++            return distances;
++        }
++      }
++    }
++  }
++}
++
++UInt32 * GetMatchesSpec1(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const Byte *cur, CLzRef *son,
++    UInt32 _cyclicBufferPos, UInt32 _cyclicBufferSize, UInt32 cutValue,
++    UInt32 *distances, UInt32 maxLen)
++{
++  CLzRef *ptr0 = son + (_cyclicBufferPos << 1) + 1;
++  CLzRef *ptr1 = son + (_cyclicBufferPos << 1);
++  UInt32 len0 = 0, len1 = 0;
++  for (;;)
++  {
++    UInt32 delta = pos - curMatch;
++    if (cutValue-- == 0 || delta >= _cyclicBufferSize)
++    {
++      *ptr0 = *ptr1 = kEmptyHashValue;
++      return distances;
++    }
++    {
++      CLzRef *pair = son + ((_cyclicBufferPos - delta + ((delta > _cyclicBufferPos) ? _cyclicBufferSize : 0)) << 1);
++      const Byte *pb = cur - delta;
++      UInt32 len = (len0 < len1 ? len0 : len1);
++      if (pb[len] == cur[len])
++      {
++        if (++len != lenLimit && pb[len] == cur[len])
++          while (++len != lenLimit)
++            if (pb[len] != cur[len])
++              break;
++        if (maxLen < len)
++        {
++          *distances++ = maxLen = len;
++          *distances++ = delta - 1;
++          if (len == lenLimit)
++          {
++            *ptr1 = pair[0];
++            *ptr0 = pair[1];
++            return distances;
++          }
++        }
++      }
++      if (pb[len] < cur[len])
++      {
++        *ptr1 = curMatch;
++        ptr1 = pair + 1;
++        curMatch = *ptr1;
++        len1 = len;
++      }
++      else
++      {
++        *ptr0 = curMatch;
++        ptr0 = pair;
++        curMatch = *ptr0;
++        len0 = len;
++      }
++    }
++  }
++}
++
++static void SkipMatchesSpec(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const Byte *cur, CLzRef *son,
++    UInt32 _cyclicBufferPos, UInt32 _cyclicBufferSize, UInt32 cutValue)
++{
++  CLzRef *ptr0 = son + (_cyclicBufferPos << 1) + 1;
++  CLzRef *ptr1 = son + (_cyclicBufferPos << 1);
++  UInt32 len0 = 0, len1 = 0;
++  for (;;)
++  {
++    UInt32 delta = pos - curMatch;
++    if (cutValue-- == 0 || delta >= _cyclicBufferSize)
++    {
++      *ptr0 = *ptr1 = kEmptyHashValue;
++      return;
++    }
++    {
++      CLzRef *pair = son + ((_cyclicBufferPos - delta + ((delta > _cyclicBufferPos) ? _cyclicBufferSize : 0)) << 1);
++      const Byte *pb = cur - delta;
++      UInt32 len = (len0 < len1 ? len0 : len1);
++      if (pb[len] == cur[len])
++      {
++        while (++len != lenLimit)
++          if (pb[len] != cur[len])
++            break;
++        {
++          if (len == lenLimit)
++          {
++            *ptr1 = pair[0];
++            *ptr0 = pair[1];
++            return;
++          }
++        }
++      }
++      if (pb[len] < cur[len])
++      {
++        *ptr1 = curMatch;
++        ptr1 = pair + 1;
++        curMatch = *ptr1;
++        len1 = len;
++      }
++      else
++      {
++        *ptr0 = curMatch;
++        ptr0 = pair;
++        curMatch = *ptr0;
++        len0 = len;
++      }
++    }
++  }
++}
++
++#define MOVE_POS \
++  ++p->cyclicBufferPos; \
++  p->buffer++; \
++  if (++p->pos == p->posLimit) MatchFinder_CheckLimits(p);
++
++#define MOVE_POS_RET MOVE_POS return offset;
++
++static void MatchFinder_MovePos(CMatchFinder *p) { MOVE_POS; }
++
++#define GET_MATCHES_HEADER2(minLen, ret_op) \
++  UInt32 lenLimit; UInt32 hashValue; const Byte *cur; UInt32 curMatch; \
++  lenLimit = p->lenLimit; { if (lenLimit < minLen) { MatchFinder_MovePos(p); ret_op; }} \
++  cur = p->buffer;
++
++#define GET_MATCHES_HEADER(minLen) GET_MATCHES_HEADER2(minLen, return 0)
++#define SKIP_HEADER(minLen)        GET_MATCHES_HEADER2(minLen, continue)
++
++#define MF_PARAMS(p) p->pos, p->buffer, p->son, p->cyclicBufferPos, p->cyclicBufferSize, p->cutValue
++
++#define GET_MATCHES_FOOTER(offset, maxLen) \
++  offset = (UInt32)(GetMatchesSpec1(lenLimit, curMatch, MF_PARAMS(p), \
++  distances + offset, maxLen) - distances); MOVE_POS_RET;
++
++#define SKIP_FOOTER \
++  SkipMatchesSpec(lenLimit, curMatch, MF_PARAMS(p)); MOVE_POS;
++
++static UInt32 Bt2_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances)
++{
++  UInt32 offset;
++  GET_MATCHES_HEADER(2)
++  HASH2_CALC;
++  curMatch = p->hash[hashValue];
++  p->hash[hashValue] = p->pos;
++  offset = 0;
++  GET_MATCHES_FOOTER(offset, 1)
++}
++
++UInt32 Bt3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances)
++{
++  UInt32 offset;
++  GET_MATCHES_HEADER(3)
++  HASH_ZIP_CALC;
++  curMatch = p->hash[hashValue];
++  p->hash[hashValue] = p->pos;
++  offset = 0;
++  GET_MATCHES_FOOTER(offset, 2)
++}
++
++static UInt32 Bt3_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances)
++{
++  UInt32 hash2Value, delta2, maxLen, offset;
++  GET_MATCHES_HEADER(3)
++
++  HASH3_CALC;
++
++  delta2 = p->pos - p->hash[hash2Value];
++  curMatch = p->hash[kFix3HashSize + hashValue];
++  
++  p->hash[hash2Value] =
++  p->hash[kFix3HashSize + hashValue] = p->pos;
++
++
++  maxLen = 2;
++  offset = 0;
++  if (delta2 < p->cyclicBufferSize && *(cur - delta2) == *cur)
++  {
++    for (; maxLen != lenLimit; maxLen++)
++      if (cur[(ptrdiff_t)maxLen - delta2] != cur[maxLen])
++        break;
++    distances[0] = maxLen;
++    distances[1] = delta2 - 1;
++    offset = 2;
++    if (maxLen == lenLimit)
++    {
++      SkipMatchesSpec(lenLimit, curMatch, MF_PARAMS(p));
++      MOVE_POS_RET;
++    }
++  }
++  GET_MATCHES_FOOTER(offset, maxLen)
++}
++
++static UInt32 Bt4_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances)
++{
++  UInt32 hash2Value, hash3Value, delta2, delta3, maxLen, offset;
++  GET_MATCHES_HEADER(4)
++
++  HASH4_CALC;
++
++  delta2 = p->pos - p->hash[                hash2Value];
++  delta3 = p->pos - p->hash[kFix3HashSize + hash3Value];
++  curMatch = p->hash[kFix4HashSize + hashValue];
++  
++  p->hash[                hash2Value] =
++  p->hash[kFix3HashSize + hash3Value] =
++  p->hash[kFix4HashSize + hashValue] = p->pos;
++
++  maxLen = 1;
++  offset = 0;
++  if (delta2 < p->cyclicBufferSize && *(cur - delta2) == *cur)
++  {
++    distances[0] = maxLen = 2;
++    distances[1] = delta2 - 1;
++    offset = 2;
++  }
++  if (delta2 != delta3 && delta3 < p->cyclicBufferSize && *(cur - delta3) == *cur)
++  {
++    maxLen = 3;
++    distances[offset + 1] = delta3 - 1;
++    offset += 2;
++    delta2 = delta3;
++  }
++  if (offset != 0)
++  {
++    for (; maxLen != lenLimit; maxLen++)
++      if (cur[(ptrdiff_t)maxLen - delta2] != cur[maxLen])
++        break;
++    distances[offset - 2] = maxLen;
++    if (maxLen == lenLimit)
++    {
++      SkipMatchesSpec(lenLimit, curMatch, MF_PARAMS(p));
++      MOVE_POS_RET;
++    }
++  }
++  if (maxLen < 3)
++    maxLen = 3;
++  GET_MATCHES_FOOTER(offset, maxLen)
++}
++
++static UInt32 Hc4_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances)
++{
++  UInt32 hash2Value, hash3Value, delta2, delta3, maxLen, offset;
++  GET_MATCHES_HEADER(4)
++
++  HASH4_CALC;
++
++  delta2 = p->pos - p->hash[                hash2Value];
++  delta3 = p->pos - p->hash[kFix3HashSize + hash3Value];
++  curMatch = p->hash[kFix4HashSize + hashValue];
++
++  p->hash[                hash2Value] =
++  p->hash[kFix3HashSize + hash3Value] =
++  p->hash[kFix4HashSize + hashValue] = p->pos;
++
++  maxLen = 1;
++  offset = 0;
++  if (delta2 < p->cyclicBufferSize && *(cur - delta2) == *cur)
++  {
++    distances[0] = maxLen = 2;
++    distances[1] = delta2 - 1;
++    offset = 2;
++  }
++  if (delta2 != delta3 && delta3 < p->cyclicBufferSize && *(cur - delta3) == *cur)
++  {
++    maxLen = 3;
++    distances[offset + 1] = delta3 - 1;
++    offset += 2;
++    delta2 = delta3;
++  }
++  if (offset != 0)
++  {
++    for (; maxLen != lenLimit; maxLen++)
++      if (cur[(ptrdiff_t)maxLen - delta2] != cur[maxLen])
++        break;
++    distances[offset - 2] = maxLen;
++    if (maxLen == lenLimit)
++    {
++      p->son[p->cyclicBufferPos] = curMatch;
++      MOVE_POS_RET;
++    }
++  }
++  if (maxLen < 3)
++    maxLen = 3;
++  offset = (UInt32)(Hc_GetMatchesSpec(lenLimit, curMatch, MF_PARAMS(p),
++    distances + offset, maxLen) - (distances));
++  MOVE_POS_RET
++}
++
++UInt32 Hc3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances)
++{
++  UInt32 offset;
++  GET_MATCHES_HEADER(3)
++  HASH_ZIP_CALC;
++  curMatch = p->hash[hashValue];
++  p->hash[hashValue] = p->pos;
++  offset = (UInt32)(Hc_GetMatchesSpec(lenLimit, curMatch, MF_PARAMS(p),
++    distances, 2) - (distances));
++  MOVE_POS_RET
++}
++
++static void Bt2_MatchFinder_Skip(CMatchFinder *p, UInt32 num)
++{
++  do
++  {
++    SKIP_HEADER(2)
++    HASH2_CALC;
++    curMatch = p->hash[hashValue];
++    p->hash[hashValue] = p->pos;
++    SKIP_FOOTER
++  }
++  while (--num != 0);
++}
++
++void Bt3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num)
++{
++  do
++  {
++    SKIP_HEADER(3)
++    HASH_ZIP_CALC;
++    curMatch = p->hash[hashValue];
++    p->hash[hashValue] = p->pos;
++    SKIP_FOOTER
++  }
++  while (--num != 0);
++}
++
++static void Bt3_MatchFinder_Skip(CMatchFinder *p, UInt32 num)
++{
++  do
++  {
++    UInt32 hash2Value;
++    SKIP_HEADER(3)
++    HASH3_CALC;
++    curMatch = p->hash[kFix3HashSize + hashValue];
++    p->hash[hash2Value] =
++    p->hash[kFix3HashSize + hashValue] = p->pos;
++    SKIP_FOOTER
++  }
++  while (--num != 0);
++}
++
++static void Bt4_MatchFinder_Skip(CMatchFinder *p, UInt32 num)
++{
++  do
++  {
++    UInt32 hash2Value, hash3Value;
++    SKIP_HEADER(4)
++    HASH4_CALC;
++    curMatch = p->hash[kFix4HashSize + hashValue];
++    p->hash[                hash2Value] =
++    p->hash[kFix3HashSize + hash3Value] = p->pos;
++    p->hash[kFix4HashSize + hashValue] = p->pos;
++    SKIP_FOOTER
++  }
++  while (--num != 0);
++}
++
++static void Hc4_MatchFinder_Skip(CMatchFinder *p, UInt32 num)
++{
++  do
++  {
++    UInt32 hash2Value, hash3Value;
++    SKIP_HEADER(4)
++    HASH4_CALC;
++    curMatch = p->hash[kFix4HashSize + hashValue];
++    p->hash[                hash2Value] =
++    p->hash[kFix3HashSize + hash3Value] =
++    p->hash[kFix4HashSize + hashValue] = p->pos;
++    p->son[p->cyclicBufferPos] = curMatch;
++    MOVE_POS
++  }
++  while (--num != 0);
++}
++
++void Hc3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num)
++{
++  do
++  {
++    SKIP_HEADER(3)
++    HASH_ZIP_CALC;
++    curMatch = p->hash[hashValue];
++    p->hash[hashValue] = p->pos;
++    p->son[p->cyclicBufferPos] = curMatch;
++    MOVE_POS
++  }
++  while (--num != 0);
++}
++
++void MatchFinder_CreateVTable(CMatchFinder *p, IMatchFinder *vTable)
++{
++  vTable->Init = (Mf_Init_Func)MatchFinder_Init;
++  vTable->GetIndexByte = (Mf_GetIndexByte_Func)MatchFinder_GetIndexByte;
++  vTable->GetNumAvailableBytes = (Mf_GetNumAvailableBytes_Func)MatchFinder_GetNumAvailableBytes;
++  vTable->GetPointerToCurrentPos = (Mf_GetPointerToCurrentPos_Func)MatchFinder_GetPointerToCurrentPos;
++  if (!p->btMode)
++  {
++    vTable->GetMatches = (Mf_GetMatches_Func)Hc4_MatchFinder_GetMatches;
++    vTable->Skip = (Mf_Skip_Func)Hc4_MatchFinder_Skip;
++  }
++  else if (p->numHashBytes == 2)
++  {
++    vTable->GetMatches = (Mf_GetMatches_Func)Bt2_MatchFinder_GetMatches;
++    vTable->Skip = (Mf_Skip_Func)Bt2_MatchFinder_Skip;
++  }
++  else if (p->numHashBytes == 3)
++  {
++    vTable->GetMatches = (Mf_GetMatches_Func)Bt3_MatchFinder_GetMatches;
++    vTable->Skip = (Mf_Skip_Func)Bt3_MatchFinder_Skip;
++  }
++  else
++  {
++    vTable->GetMatches = (Mf_GetMatches_Func)Bt4_MatchFinder_GetMatches;
++    vTable->Skip = (Mf_Skip_Func)Bt4_MatchFinder_Skip;
++  }
++}
+--- /dev/null
++++ b/lib/lzma/LzmaDec.c
+@@ -0,0 +1,999 @@
++/* LzmaDec.c -- LZMA Decoder
++2009-09-20 : Igor Pavlov : Public domain */
++
++#include "LzmaDec.h"
++
++#include <string.h>
++
++#define kNumTopBits 24
++#define kTopValue ((UInt32)1 << kNumTopBits)
++
++#define kNumBitModelTotalBits 11
++#define kBitModelTotal (1 << kNumBitModelTotalBits)
++#define kNumMoveBits 5
++
++#define RC_INIT_SIZE 5
++
++#define NORMALIZE if (range < kTopValue) { range <<= 8; code = (code << 8) | (*buf++); }
++
++#define IF_BIT_0(p) ttt = *(p); NORMALIZE; bound = (range >> kNumBitModelTotalBits) * ttt; if (code < bound)
++#define UPDATE_0(p) range = bound; *(p) = (CLzmaProb)(ttt + ((kBitModelTotal - ttt) >> kNumMoveBits));
++#define UPDATE_1(p) range -= bound; code -= bound; *(p) = (CLzmaProb)(ttt - (ttt >> kNumMoveBits));
++#define GET_BIT2(p, i, A0, A1) IF_BIT_0(p) \
++  { UPDATE_0(p); i = (i + i); A0; } else \
++  { UPDATE_1(p); i = (i + i) + 1; A1; }
++#define GET_BIT(p, i) GET_BIT2(p, i, ; , ;)
++
++#define TREE_GET_BIT(probs, i) { GET_BIT((probs + i), i); }
++#define TREE_DECODE(probs, limit, i) \
++  { i = 1; do { TREE_GET_BIT(probs, i); } while (i < limit); i -= limit; }
++
++/* #define _LZMA_SIZE_OPT */
++
++#ifdef _LZMA_SIZE_OPT
++#define TREE_6_DECODE(probs, i) TREE_DECODE(probs, (1 << 6), i)
++#else
++#define TREE_6_DECODE(probs, i) \
++  { i = 1; \
++  TREE_GET_BIT(probs, i); \
++  TREE_GET_BIT(probs, i); \
++  TREE_GET_BIT(probs, i); \
++  TREE_GET_BIT(probs, i); \
++  TREE_GET_BIT(probs, i); \
++  TREE_GET_BIT(probs, i); \
++  i -= 0x40; }
++#endif
++
++#define NORMALIZE_CHECK if (range < kTopValue) { if (buf >= bufLimit) return DUMMY_ERROR; range <<= 8; code = (code << 8) | (*buf++); }
++
++#define IF_BIT_0_CHECK(p) ttt = *(p); NORMALIZE_CHECK; bound = (range >> kNumBitModelTotalBits) * ttt; if (code < bound)
++#define UPDATE_0_CHECK range = bound;
++#define UPDATE_1_CHECK range -= bound; code -= bound;
++#define GET_BIT2_CHECK(p, i, A0, A1) IF_BIT_0_CHECK(p) \
++  { UPDATE_0_CHECK; i = (i + i); A0; } else \
++  { UPDATE_1_CHECK; i = (i + i) + 1; A1; }
++#define GET_BIT_CHECK(p, i) GET_BIT2_CHECK(p, i, ; , ;)
++#define TREE_DECODE_CHECK(probs, limit, i) \
++  { i = 1; do { GET_BIT_CHECK(probs + i, i) } while (i < limit); i -= limit; }
++
++
++#define kNumPosBitsMax 4
++#define kNumPosStatesMax (1 << kNumPosBitsMax)
++
++#define kLenNumLowBits 3
++#define kLenNumLowSymbols (1 << kLenNumLowBits)
++#define kLenNumMidBits 3
++#define kLenNumMidSymbols (1 << kLenNumMidBits)
++#define kLenNumHighBits 8
++#define kLenNumHighSymbols (1 << kLenNumHighBits)
++
++#define LenChoice 0
++#define LenChoice2 (LenChoice + 1)
++#define LenLow (LenChoice2 + 1)
++#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits))
++#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits))
++#define kNumLenProbs (LenHigh + kLenNumHighSymbols)
++
++
++#define kNumStates 12
++#define kNumLitStates 7
++
++#define kStartPosModelIndex 4
++#define kEndPosModelIndex 14
++#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
++
++#define kNumPosSlotBits 6
++#define kNumLenToPosStates 4
++
++#define kNumAlignBits 4
++#define kAlignTableSize (1 << kNumAlignBits)
++
++#define kMatchMinLen 2
++#define kMatchSpecLenStart (kMatchMinLen + kLenNumLowSymbols + kLenNumMidSymbols + kLenNumHighSymbols)
++
++#define IsMatch 0
++#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax))
++#define IsRepG0 (IsRep + kNumStates)
++#define IsRepG1 (IsRepG0 + kNumStates)
++#define IsRepG2 (IsRepG1 + kNumStates)
++#define IsRep0Long (IsRepG2 + kNumStates)
++#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax))
++#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits))
++#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex)
++#define LenCoder (Align + kAlignTableSize)
++#define RepLenCoder (LenCoder + kNumLenProbs)
++#define Literal (RepLenCoder + kNumLenProbs)
++
++#define LZMA_BASE_SIZE 1846
++#define LZMA_LIT_SIZE 768
++
++#define LzmaProps_GetNumProbs(p) ((UInt32)LZMA_BASE_SIZE + (LZMA_LIT_SIZE << ((p)->lc + (p)->lp)))
++
++#if Literal != LZMA_BASE_SIZE
++StopCompilingDueBUG
++#endif
++
++#define LZMA_DIC_MIN (1 << 12)
++
++/* First LZMA-symbol is always decoded.
++And it decodes new LZMA-symbols while (buf < bufLimit), but "buf" is without last normalization
++Out:
++  Result:
++    SZ_OK - OK
++    SZ_ERROR_DATA - Error
++  p->remainLen:
++    < kMatchSpecLenStart : normal remain
++    = kMatchSpecLenStart : finished
++    = kMatchSpecLenStart + 1 : Flush marker
++    = kMatchSpecLenStart + 2 : State Init Marker
++*/
++
++static int MY_FAST_CALL LzmaDec_DecodeReal(CLzmaDec *p, SizeT limit, const Byte *bufLimit)
++{
++  CLzmaProb *probs = p->probs;
++
++  unsigned state = p->state;
++  UInt32 rep0 = p->reps[0], rep1 = p->reps[1], rep2 = p->reps[2], rep3 = p->reps[3];
++  unsigned pbMask = ((unsigned)1 << (p->prop.pb)) - 1;
++  unsigned lpMask = ((unsigned)1 << (p->prop.lp)) - 1;
++  unsigned lc = p->prop.lc;
++
++  Byte *dic = p->dic;
++  SizeT dicBufSize = p->dicBufSize;
++  SizeT dicPos = p->dicPos;
++  
++  UInt32 processedPos = p->processedPos;
++  UInt32 checkDicSize = p->checkDicSize;
++  unsigned len = 0;
++
++  const Byte *buf = p->buf;
++  UInt32 range = p->range;
++  UInt32 code = p->code;
++
++  do
++  {
++    CLzmaProb *prob;
++    UInt32 bound;
++    unsigned ttt;
++    unsigned posState = processedPos & pbMask;
++
++    prob = probs + IsMatch + (state << kNumPosBitsMax) + posState;
++    IF_BIT_0(prob)
++    {
++      unsigned symbol;
++      UPDATE_0(prob);
++      prob = probs + Literal;
++      if (checkDicSize != 0 || processedPos != 0)
++        prob += (LZMA_LIT_SIZE * (((processedPos & lpMask) << lc) +
++        (dic[(dicPos == 0 ? dicBufSize : dicPos) - 1] >> (8 - lc))));
++
++      if (state < kNumLitStates)
++      {
++        state -= (state < 4) ? state : 3;
++        symbol = 1;
++        do { GET_BIT(prob + symbol, symbol) } while (symbol < 0x100);
++      }
++      else
++      {
++        unsigned matchByte = p->dic[(dicPos - rep0) + ((dicPos < rep0) ? dicBufSize : 0)];
++        unsigned offs = 0x100;
++        state -= (state < 10) ? 3 : 6;
++        symbol = 1;
++        do
++        {
++          unsigned bit;
++          CLzmaProb *probLit;
++          matchByte <<= 1;
++          bit = (matchByte & offs);
++          probLit = prob + offs + bit + symbol;
++          GET_BIT2(probLit, symbol, offs &= ~bit, offs &= bit)
++        }
++        while (symbol < 0x100);
++      }
++      dic[dicPos++] = (Byte)symbol;
++      processedPos++;
++      continue;
++    }
++    else
++    {
++      UPDATE_1(prob);
++      prob = probs + IsRep + state;
++      IF_BIT_0(prob)
++      {
++        UPDATE_0(prob);
++        state += kNumStates;
++        prob = probs + LenCoder;
++      }
++      else
++      {
++        UPDATE_1(prob);
++        if (checkDicSize == 0 && processedPos == 0)
++          return SZ_ERROR_DATA;
++        prob = probs + IsRepG0 + state;
++        IF_BIT_0(prob)
++        {
++          UPDATE_0(prob);
++          prob = probs + IsRep0Long + (state << kNumPosBitsMax) + posState;
++          IF_BIT_0(prob)
++          {
++            UPDATE_0(prob);
++            dic[dicPos] = dic[(dicPos - rep0) + ((dicPos < rep0) ? dicBufSize : 0)];
++            dicPos++;
++            processedPos++;
++            state = state < kNumLitStates ? 9 : 11;
++            continue;
++          }
++          UPDATE_1(prob);
++        }
++        else
++        {
++          UInt32 distance;
++          UPDATE_1(prob);
++          prob = probs + IsRepG1 + state;
++          IF_BIT_0(prob)
++          {
++            UPDATE_0(prob);
++            distance = rep1;
++          }
++          else
++          {
++            UPDATE_1(prob);
++            prob = probs + IsRepG2 + state;
++            IF_BIT_0(prob)
++            {
++              UPDATE_0(prob);
++              distance = rep2;
++            }
++            else
++            {
++              UPDATE_1(prob);
++              distance = rep3;
++              rep3 = rep2;
++            }
++            rep2 = rep1;
++          }
++          rep1 = rep0;
++          rep0 = distance;
++        }
++        state = state < kNumLitStates ? 8 : 11;
++        prob = probs + RepLenCoder;
++      }
++      {
++        unsigned limit, offset;
++        CLzmaProb *probLen = prob + LenChoice;
++        IF_BIT_0(probLen)
++        {
++          UPDATE_0(probLen);
++          probLen = prob + LenLow + (posState << kLenNumLowBits);
++          offset = 0;
++          limit = (1 << kLenNumLowBits);
++        }
++        else
++        {
++          UPDATE_1(probLen);
++          probLen = prob + LenChoice2;
++          IF_BIT_0(probLen)
++          {
++            UPDATE_0(probLen);
++            probLen = prob + LenMid + (posState << kLenNumMidBits);
++            offset = kLenNumLowSymbols;
++            limit = (1 << kLenNumMidBits);
++          }
++          else
++          {
++            UPDATE_1(probLen);
++            probLen = prob + LenHigh;
++            offset = kLenNumLowSymbols + kLenNumMidSymbols;
++            limit = (1 << kLenNumHighBits);
++          }
++        }
++        TREE_DECODE(probLen, limit, len);
++        len += offset;
++      }
++
++      if (state >= kNumStates)
++      {
++        UInt32 distance;
++        prob = probs + PosSlot +
++            ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) << kNumPosSlotBits);
++        TREE_6_DECODE(prob, distance);
++        if (distance >= kStartPosModelIndex)
++        {
++          unsigned posSlot = (unsigned)distance;
++          int numDirectBits = (int)(((distance >> 1) - 1));
++          distance = (2 | (distance & 1));
++          if (posSlot < kEndPosModelIndex)
++          {
++            distance <<= numDirectBits;
++            prob = probs + SpecPos + distance - posSlot - 1;
++            {
++              UInt32 mask = 1;
++              unsigned i = 1;
++              do
++              {
++                GET_BIT2(prob + i, i, ; , distance |= mask);
++                mask <<= 1;
++              }
++              while (--numDirectBits != 0);
++            }
++          }
++          else
++          {
++            numDirectBits -= kNumAlignBits;
++            do
++            {
++              NORMALIZE
++              range >>= 1;
++              
++              {
++                UInt32 t;
++                code -= range;
++                t = (0 - ((UInt32)code >> 31)); /* (UInt32)((Int32)code >> 31) */
++                distance = (distance << 1) + (t + 1);
++                code += range & t;
++              }
++              /*
++              distance <<= 1;
++              if (code >= range)
++              {
++                code -= range;
++                distance |= 1;
++              }
++              */
++            }
++            while (--numDirectBits != 0);
++            prob = probs + Align;
++            distance <<= kNumAlignBits;
++            {
++              unsigned i = 1;
++              GET_BIT2(prob + i, i, ; , distance |= 1);
++              GET_BIT2(prob + i, i, ; , distance |= 2);
++              GET_BIT2(prob + i, i, ; , distance |= 4);
++              GET_BIT2(prob + i, i, ; , distance |= 8);
++            }
++            if (distance == (UInt32)0xFFFFFFFF)
++            {
++              len += kMatchSpecLenStart;
++              state -= kNumStates;
++              break;
++            }
++          }
++        }
++        rep3 = rep2;
++        rep2 = rep1;
++        rep1 = rep0;
++        rep0 = distance + 1;
++        if (checkDicSize == 0)
++        {
++          if (distance >= processedPos)
++            return SZ_ERROR_DATA;
++        }
++        else if (distance >= checkDicSize)
++          return SZ_ERROR_DATA;
++        state = (state < kNumStates + kNumLitStates) ? kNumLitStates : kNumLitStates + 3;
++      }
++
++      len += kMatchMinLen;
++
++      if (limit == dicPos)
++        return SZ_ERROR_DATA;
++      {
++        SizeT rem = limit - dicPos;
++        unsigned curLen = ((rem < len) ? (unsigned)rem : len);
++        SizeT pos = (dicPos - rep0) + ((dicPos < rep0) ? dicBufSize : 0);
++
++        processedPos += curLen;
++
++        len -= curLen;
++        if (pos + curLen <= dicBufSize)
++        {
++          Byte *dest = dic + dicPos;
++          ptrdiff_t src = (ptrdiff_t)pos - (ptrdiff_t)dicPos;
++          const Byte *lim = dest + curLen;
++          dicPos += curLen;
++          do
++            *(dest) = (Byte)*(dest + src);
++          while (++dest != lim);
++        }
++        else
++        {
++          do
++          {
++            dic[dicPos++] = dic[pos];
++            if (++pos == dicBufSize)
++              pos = 0;
++          }
++          while (--curLen != 0);
++        }
++      }
++    }
++  }
++  while (dicPos < limit && buf < bufLimit);
++  NORMALIZE;
++  p->buf = buf;
++  p->range = range;
++  p->code = code;
++  p->remainLen = len;
++  p->dicPos = dicPos;
++  p->processedPos = processedPos;
++  p->reps[0] = rep0;
++  p->reps[1] = rep1;
++  p->reps[2] = rep2;
++  p->reps[3] = rep3;
++  p->state = state;
++
++  return SZ_OK;
++}
++
++static void MY_FAST_CALL LzmaDec_WriteRem(CLzmaDec *p, SizeT limit)
++{
++  if (p->remainLen != 0 && p->remainLen < kMatchSpecLenStart)
++  {
++    Byte *dic = p->dic;
++    SizeT dicPos = p->dicPos;
++    SizeT dicBufSize = p->dicBufSize;
++    unsigned len = p->remainLen;
++    UInt32 rep0 = p->reps[0];
++    if (limit - dicPos < len)
++      len = (unsigned)(limit - dicPos);
++
++    if (p->checkDicSize == 0 && p->prop.dicSize - p->processedPos <= len)
++      p->checkDicSize = p->prop.dicSize;
++
++    p->processedPos += len;
++    p->remainLen -= len;
++    while (len-- != 0)
++    {
++      dic[dicPos] = dic[(dicPos - rep0) + ((dicPos < rep0) ? dicBufSize : 0)];
++      dicPos++;
++    }
++    p->dicPos = dicPos;
++  }
++}
++
++static int MY_FAST_CALL LzmaDec_DecodeReal2(CLzmaDec *p, SizeT limit, const Byte *bufLimit)
++{
++  do
++  {
++    SizeT limit2 = limit;
++    if (p->checkDicSize == 0)
++    {
++      UInt32 rem = p->prop.dicSize - p->processedPos;
++      if (limit - p->dicPos > rem)
++        limit2 = p->dicPos + rem;
++    }
++    RINOK(LzmaDec_DecodeReal(p, limit2, bufLimit));
++    if (p->processedPos >= p->prop.dicSize)
++      p->checkDicSize = p->prop.dicSize;
++    LzmaDec_WriteRem(p, limit);
++  }
++  while (p->dicPos < limit && p->buf < bufLimit && p->remainLen < kMatchSpecLenStart);
++
++  if (p->remainLen > kMatchSpecLenStart)
++  {
++    p->remainLen = kMatchSpecLenStart;
++  }
++  return 0;
++}
++
++typedef enum
++{
++  DUMMY_ERROR, /* unexpected end of input stream */
++  DUMMY_LIT,
++  DUMMY_MATCH,
++  DUMMY_REP
++} ELzmaDummy;
++
++static ELzmaDummy LzmaDec_TryDummy(const CLzmaDec *p, const Byte *buf, SizeT inSize)
++{
++  UInt32 range = p->range;
++  UInt32 code = p->code;
++  const Byte *bufLimit = buf + inSize;
++  CLzmaProb *probs = p->probs;
++  unsigned state = p->state;
++  ELzmaDummy res;
++
++  {
++    CLzmaProb *prob;
++    UInt32 bound;
++    unsigned ttt;
++    unsigned posState = (p->processedPos) & ((1 << p->prop.pb) - 1);
++
++    prob = probs + IsMatch + (state << kNumPosBitsMax) + posState;
++    IF_BIT_0_CHECK(prob)
++    {
++      UPDATE_0_CHECK
++
++      /* if (bufLimit - buf >= 7) return DUMMY_LIT; */
++
++      prob = probs + Literal;
++      if (p->checkDicSize != 0 || p->processedPos != 0)
++        prob += (LZMA_LIT_SIZE *
++          ((((p->processedPos) & ((1 << (p->prop.lp)) - 1)) << p->prop.lc) +
++          (p->dic[(p->dicPos == 0 ? p->dicBufSize : p->dicPos) - 1] >> (8 - p->prop.lc))));
++
++      if (state < kNumLitStates)
++      {
++        unsigned symbol = 1;
++        do { GET_BIT_CHECK(prob + symbol, symbol) } while (symbol < 0x100);
++      }
++      else
++      {
++        unsigned matchByte = p->dic[p->dicPos - p->reps[0] +
++            ((p->dicPos < p->reps[0]) ? p->dicBufSize : 0)];
++        unsigned offs = 0x100;
++        unsigned symbol = 1;
++        do
++        {
++          unsigned bit;
++          CLzmaProb *probLit;
++          matchByte <<= 1;
++          bit = (matchByte & offs);
++          probLit = prob + offs + bit + symbol;
++          GET_BIT2_CHECK(probLit, symbol, offs &= ~bit, offs &= bit)
++        }
++        while (symbol < 0x100);
++      }
++      res = DUMMY_LIT;
++    }
++    else
++    {
++      unsigned len;
++      UPDATE_1_CHECK;
++
++      prob = probs + IsRep + state;
++      IF_BIT_0_CHECK(prob)
++      {
++        UPDATE_0_CHECK;
++        state = 0;
++        prob = probs + LenCoder;
++        res = DUMMY_MATCH;
++      }
++      else
++      {
++        UPDATE_1_CHECK;
++        res = DUMMY_REP;
++        prob = probs + IsRepG0 + state;
++        IF_BIT_0_CHECK(prob)
++        {
++          UPDATE_0_CHECK;
++          prob = probs + IsRep0Long + (state << kNumPosBitsMax) + posState;
++          IF_BIT_0_CHECK(prob)
++          {
++            UPDATE_0_CHECK;
++            NORMALIZE_CHECK;
++            return DUMMY_REP;
++          }
++          else
++          {
++            UPDATE_1_CHECK;
++          }
++        }
++        else
++        {
++          UPDATE_1_CHECK;
++          prob = probs + IsRepG1 + state;
++          IF_BIT_0_CHECK(prob)
++          {
++            UPDATE_0_CHECK;
++          }
++          else
++          {
++            UPDATE_1_CHECK;
++            prob = probs + IsRepG2 + state;
++            IF_BIT_0_CHECK(prob)
++            {
++              UPDATE_0_CHECK;
++            }
++            else
++            {
++              UPDATE_1_CHECK;
++            }
++          }
++        }
++        state = kNumStates;
++        prob = probs + RepLenCoder;
++      }
++      {
++        unsigned limit, offset;
++        CLzmaProb *probLen = prob + LenChoice;
++        IF_BIT_0_CHECK(probLen)
++        {
++          UPDATE_0_CHECK;
++          probLen = prob + LenLow + (posState << kLenNumLowBits);
++          offset = 0;
++          limit = 1 << kLenNumLowBits;
++        }
++        else
++        {
++          UPDATE_1_CHECK;
++          probLen = prob + LenChoice2;
++          IF_BIT_0_CHECK(probLen)
++          {
++            UPDATE_0_CHECK;
++            probLen = prob + LenMid + (posState << kLenNumMidBits);
++            offset = kLenNumLowSymbols;
++            limit = 1 << kLenNumMidBits;
++          }
++          else
++          {
++            UPDATE_1_CHECK;
++            probLen = prob + LenHigh;
++            offset = kLenNumLowSymbols + kLenNumMidSymbols;
++            limit = 1 << kLenNumHighBits;
++          }
++        }
++        TREE_DECODE_CHECK(probLen, limit, len);
++        len += offset;
++      }
++
++      if (state < 4)
++      {
++        unsigned posSlot;
++        prob = probs + PosSlot +
++            ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) <<
++            kNumPosSlotBits);
++        TREE_DECODE_CHECK(prob, 1 << kNumPosSlotBits, posSlot);
++        if (posSlot >= kStartPosModelIndex)
++        {
++          int numDirectBits = ((posSlot >> 1) - 1);
++
++          /* if (bufLimit - buf >= 8) return DUMMY_MATCH; */
++
++          if (posSlot < kEndPosModelIndex)
++          {
++            prob = probs + SpecPos + ((2 | (posSlot & 1)) << numDirectBits) - posSlot - 1;
++          }
++          else
++          {
++            numDirectBits -= kNumAlignBits;
++            do
++            {
++              NORMALIZE_CHECK
++              range >>= 1;
++              code -= range & (((code - range) >> 31) - 1);
++              /* if (code >= range) code -= range; */
++            }
++            while (--numDirectBits != 0);
++            prob = probs + Align;
++            numDirectBits = kNumAlignBits;
++          }
++          {
++            unsigned i = 1;
++            do
++            {
++              GET_BIT_CHECK(prob + i, i);
++            }
++            while (--numDirectBits != 0);
++          }
++        }
++      }
++    }
++  }
++  NORMALIZE_CHECK;
++  return res;
++}
++
++
++static void LzmaDec_InitRc(CLzmaDec *p, const Byte *data)
++{
++  p->code = ((UInt32)data[1] << 24) | ((UInt32)data[2] << 16) | ((UInt32)data[3] << 8) | ((UInt32)data[4]);
++  p->range = 0xFFFFFFFF;
++  p->needFlush = 0;
++}
++
++void LzmaDec_InitDicAndState(CLzmaDec *p, Bool initDic, Bool initState)
++{
++  p->needFlush = 1;
++  p->remainLen = 0;
++  p->tempBufSize = 0;
++
++  if (initDic)
++  {
++    p->processedPos = 0;
++    p->checkDicSize = 0;
++    p->needInitState = 1;
++  }
++  if (initState)
++    p->needInitState = 1;
++}
++
++void LzmaDec_Init(CLzmaDec *p)
++{
++  p->dicPos = 0;
++  LzmaDec_InitDicAndState(p, True, True);
++}
++
++static void LzmaDec_InitStateReal(CLzmaDec *p)
++{
++  UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (p->prop.lc + p->prop.lp));
++  UInt32 i;
++  CLzmaProb *probs = p->probs;
++  for (i = 0; i < numProbs; i++)
++    probs[i] = kBitModelTotal >> 1;
++  p->reps[0] = p->reps[1] = p->reps[2] = p->reps[3] = 1;
++  p->state = 0;
++  p->needInitState = 0;
++}
++
++SRes LzmaDec_DecodeToDic(CLzmaDec *p, SizeT dicLimit, const Byte *src, SizeT *srcLen,
++    ELzmaFinishMode finishMode, ELzmaStatus *status)
++{
++  SizeT inSize = *srcLen;
++  (*srcLen) = 0;
++  LzmaDec_WriteRem(p, dicLimit);
++  
++  *status = LZMA_STATUS_NOT_SPECIFIED;
++
++  while (p->remainLen != kMatchSpecLenStart)
++  {
++      int checkEndMarkNow;
++
++      if (p->needFlush != 0)
++      {
++        for (; inSize > 0 && p->tempBufSize < RC_INIT_SIZE; (*srcLen)++, inSize--)
++          p->tempBuf[p->tempBufSize++] = *src++;
++        if (p->tempBufSize < RC_INIT_SIZE)
++        {
++          *status = LZMA_STATUS_NEEDS_MORE_INPUT;
++          return SZ_OK;
++        }
++        if (p->tempBuf[0] != 0)
++          return SZ_ERROR_DATA;
++
++        LzmaDec_InitRc(p, p->tempBuf);
++        p->tempBufSize = 0;
++      }
++
++      checkEndMarkNow = 0;
++      if (p->dicPos >= dicLimit)
++      {
++        if (p->remainLen == 0 && p->code == 0)
++        {
++          *status = LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK;
++          return SZ_OK;
++        }
++        if (finishMode == LZMA_FINISH_ANY)
++        {
++          *status = LZMA_STATUS_NOT_FINISHED;
++          return SZ_OK;
++        }
++        if (p->remainLen != 0)
++        {
++          *status = LZMA_STATUS_NOT_FINISHED;
++          return SZ_ERROR_DATA;
++        }
++        checkEndMarkNow = 1;
++      }
++
++      if (p->needInitState)
++        LzmaDec_InitStateReal(p);
++  
++      if (p->tempBufSize == 0)
++      {
++        SizeT processed;
++        const Byte *bufLimit;
++        if (inSize < LZMA_REQUIRED_INPUT_MAX || checkEndMarkNow)
++        {
++          int dummyRes = LzmaDec_TryDummy(p, src, inSize);
++          if (dummyRes == DUMMY_ERROR)
++          {
++            memcpy(p->tempBuf, src, inSize);
++            p->tempBufSize = (unsigned)inSize;
++            (*srcLen) += inSize;
++            *status = LZMA_STATUS_NEEDS_MORE_INPUT;
++            return SZ_OK;
++          }
++          if (checkEndMarkNow && dummyRes != DUMMY_MATCH)
++          {
++            *status = LZMA_STATUS_NOT_FINISHED;
++            return SZ_ERROR_DATA;
++          }
++          bufLimit = src;
++        }
++        else
++          bufLimit = src + inSize - LZMA_REQUIRED_INPUT_MAX;
++        p->buf = src;
++        if (LzmaDec_DecodeReal2(p, dicLimit, bufLimit) != 0)
++          return SZ_ERROR_DATA;
++        processed = (SizeT)(p->buf - src);
++        (*srcLen) += processed;
++        src += processed;
++        inSize -= processed;
++      }
++      else
++      {
++        unsigned rem = p->tempBufSize, lookAhead = 0;
++        while (rem < LZMA_REQUIRED_INPUT_MAX && lookAhead < inSize)
++          p->tempBuf[rem++] = src[lookAhead++];
++        p->tempBufSize = rem;
++        if (rem < LZMA_REQUIRED_INPUT_MAX || checkEndMarkNow)
++        {
++          int dummyRes = LzmaDec_TryDummy(p, p->tempBuf, rem);
++          if (dummyRes == DUMMY_ERROR)
++          {
++            (*srcLen) += lookAhead;
++            *status = LZMA_STATUS_NEEDS_MORE_INPUT;
++            return SZ_OK;
++          }
++          if (checkEndMarkNow && dummyRes != DUMMY_MATCH)
++          {
++            *status = LZMA_STATUS_NOT_FINISHED;
++            return SZ_ERROR_DATA;
++          }
++        }
++        p->buf = p->tempBuf;
++        if (LzmaDec_DecodeReal2(p, dicLimit, p->buf) != 0)
++          return SZ_ERROR_DATA;
++        lookAhead -= (rem - (unsigned)(p->buf - p->tempBuf));
++        (*srcLen) += lookAhead;
++        src += lookAhead;
++        inSize -= lookAhead;
++        p->tempBufSize = 0;
++      }
++  }
++  if (p->code == 0)
++    *status = LZMA_STATUS_FINISHED_WITH_MARK;
++  return (p->code == 0) ? SZ_OK : SZ_ERROR_DATA;
++}
++
++SRes LzmaDec_DecodeToBuf(CLzmaDec *p, Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status)
++{
++  SizeT outSize = *destLen;
++  SizeT inSize = *srcLen;
++  *srcLen = *destLen = 0;
++  for (;;)
++  {
++    SizeT inSizeCur = inSize, outSizeCur, dicPos;
++    ELzmaFinishMode curFinishMode;
++    SRes res;
++    if (p->dicPos == p->dicBufSize)
++      p->dicPos = 0;
++    dicPos = p->dicPos;
++    if (outSize > p->dicBufSize - dicPos)
++    {
++      outSizeCur = p->dicBufSize;
++      curFinishMode = LZMA_FINISH_ANY;
++    }
++    else
++    {
++      outSizeCur = dicPos + outSize;
++      curFinishMode = finishMode;
++    }
++
++    res = LzmaDec_DecodeToDic(p, outSizeCur, src, &inSizeCur, curFinishMode, status);
++    src += inSizeCur;
++    inSize -= inSizeCur;
++    *srcLen += inSizeCur;
++    outSizeCur = p->dicPos - dicPos;
++    memcpy(dest, p->dic + dicPos, outSizeCur);
++    dest += outSizeCur;
++    outSize -= outSizeCur;
++    *destLen += outSizeCur;
++    if (res != 0)
++      return res;
++    if (outSizeCur == 0 || outSize == 0)
++      return SZ_OK;
++  }
++}
++
++void LzmaDec_FreeProbs(CLzmaDec *p, ISzAlloc *alloc)
++{
++  alloc->Free(alloc, p->probs);
++  p->probs = 0;
++}
++
++static void LzmaDec_FreeDict(CLzmaDec *p, ISzAlloc *alloc)
++{
++  alloc->Free(alloc, p->dic);
++  p->dic = 0;
++}
++
++void LzmaDec_Free(CLzmaDec *p, ISzAlloc *alloc)
++{
++  LzmaDec_FreeProbs(p, alloc);
++  LzmaDec_FreeDict(p, alloc);
++}
++
++SRes LzmaProps_Decode(CLzmaProps *p, const Byte *data, unsigned size)
++{
++  UInt32 dicSize;
++  Byte d;
++  
++  if (size < LZMA_PROPS_SIZE)
++    return SZ_ERROR_UNSUPPORTED;
++  else
++    dicSize = data[1] | ((UInt32)data[2] << 8) | ((UInt32)data[3] << 16) | ((UInt32)data[4] << 24);
++ 
++  if (dicSize < LZMA_DIC_MIN)
++    dicSize = LZMA_DIC_MIN;
++  p->dicSize = dicSize;
++
++  d = data[0];
++  if (d >= (9 * 5 * 5))
++    return SZ_ERROR_UNSUPPORTED;
++
++  p->lc = d % 9;
++  d /= 9;
++  p->pb = d / 5;
++  p->lp = d % 5;
++
++  return SZ_OK;
++}
++
++static SRes LzmaDec_AllocateProbs2(CLzmaDec *p, const CLzmaProps *propNew, ISzAlloc *alloc)
++{
++  UInt32 numProbs = LzmaProps_GetNumProbs(propNew);
++  if (p->probs == 0 || numProbs != p->numProbs)
++  {
++    LzmaDec_FreeProbs(p, alloc);
++    p->probs = (CLzmaProb *)alloc->Alloc(alloc, numProbs * sizeof(CLzmaProb));
++    p->numProbs = numProbs;
++    if (p->probs == 0)
++      return SZ_ERROR_MEM;
++  }
++  return SZ_OK;
++}
++
++SRes LzmaDec_AllocateProbs(CLzmaDec *p, const Byte *props, unsigned propsSize, ISzAlloc *alloc)
++{
++  CLzmaProps propNew;
++  RINOK(LzmaProps_Decode(&propNew, props, propsSize));
++  RINOK(LzmaDec_AllocateProbs2(p, &propNew, alloc));
++  p->prop = propNew;
++  return SZ_OK;
++}
++
++SRes LzmaDec_Allocate(CLzmaDec *p, const Byte *props, unsigned propsSize, ISzAlloc *alloc)
++{
++  CLzmaProps propNew;
++  SizeT dicBufSize;
++  RINOK(LzmaProps_Decode(&propNew, props, propsSize));
++  RINOK(LzmaDec_AllocateProbs2(p, &propNew, alloc));
++  dicBufSize = propNew.dicSize;
++  if (p->dic == 0 || dicBufSize != p->dicBufSize)
++  {
++    LzmaDec_FreeDict(p, alloc);
++    p->dic = (Byte *)alloc->Alloc(alloc, dicBufSize);
++    if (p->dic == 0)
++    {
++      LzmaDec_FreeProbs(p, alloc);
++      return SZ_ERROR_MEM;
++    }
++  }
++  p->dicBufSize = dicBufSize;
++  p->prop = propNew;
++  return SZ_OK;
++}
++
++SRes LzmaDecode(Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen,
++    const Byte *propData, unsigned propSize, ELzmaFinishMode finishMode,
++    ELzmaStatus *status, ISzAlloc *alloc)
++{
++  CLzmaDec p;
++  SRes res;
++  SizeT inSize = *srcLen;
++  SizeT outSize = *destLen;
++  *srcLen = *destLen = 0;
++  if (inSize < RC_INIT_SIZE)
++    return SZ_ERROR_INPUT_EOF;
++
++  LzmaDec_Construct(&p);
++  res = LzmaDec_AllocateProbs(&p, propData, propSize, alloc);
++  if (res != 0)
++    return res;
++  p.dic = dest;
++  p.dicBufSize = outSize;
++
++  LzmaDec_Init(&p);
++  
++  *srcLen = inSize;
++  res = LzmaDec_DecodeToDic(&p, outSize, src, srcLen, finishMode, status);
++
++  if (res == SZ_OK && *status == LZMA_STATUS_NEEDS_MORE_INPUT)
++    res = SZ_ERROR_INPUT_EOF;
++
++  (*destLen) = p.dicPos;
++  LzmaDec_FreeProbs(&p, alloc);
++  return res;
++}
+--- /dev/null
++++ b/lib/lzma/LzmaEnc.c
+@@ -0,0 +1,2271 @@
++/* LzmaEnc.c -- LZMA Encoder
++2009-11-24 : Igor Pavlov : Public domain */
++
++#include <string.h>
++
++/* #define SHOW_STAT */
++/* #define SHOW_STAT2 */
++
++#if defined(SHOW_STAT) || defined(SHOW_STAT2)
++#include <stdio.h>
++#endif
++
++#include "LzmaEnc.h"
++
++/* disable MT */
++#define _7ZIP_ST
++
++#include "LzFind.h"
++#ifndef _7ZIP_ST
++#include "LzFindMt.h"
++#endif
++
++#ifdef SHOW_STAT
++static int ttt = 0;
++#endif
++
++#define kBlockSizeMax ((1 << LZMA_NUM_BLOCK_SIZE_BITS) - 1)
++
++#define kBlockSize (9 << 10)
++#define kUnpackBlockSize (1 << 18)
++#define kMatchArraySize (1 << 21)
++#define kMatchRecordMaxSize ((LZMA_MATCH_LEN_MAX * 2 + 3) * LZMA_MATCH_LEN_MAX)
++
++#define kNumMaxDirectBits (31)
++
++#define kNumTopBits 24
++#define kTopValue ((UInt32)1 << kNumTopBits)
++
++#define kNumBitModelTotalBits 11
++#define kBitModelTotal (1 << kNumBitModelTotalBits)
++#define kNumMoveBits 5
++#define kProbInitValue (kBitModelTotal >> 1)
++
++#define kNumMoveReducingBits 4
++#define kNumBitPriceShiftBits 4
++#define kBitPrice (1 << kNumBitPriceShiftBits)
++
++void LzmaEncProps_Init(CLzmaEncProps *p)
++{
++  p->level = 5;
++  p->dictSize = p->mc = 0;
++  p->lc = p->lp = p->pb = p->algo = p->fb = p->btMode = p->numHashBytes = p->numThreads = -1;
++  p->writeEndMark = 0;
++}
++
++void LzmaEncProps_Normalize(CLzmaEncProps *p)
++{
++  int level = p->level;
++  if (level < 0) level = 5;
++  p->level = level;
++  if (p->dictSize == 0) p->dictSize = (level <= 5 ? (1 << (level * 2 + 14)) : (level == 6 ? (1 << 25) : (1 << 26)));
++  if (p->lc < 0) p->lc = 3;
++  if (p->lp < 0) p->lp = 0;
++  if (p->pb < 0) p->pb = 2;
++  if (p->algo < 0) p->algo = (level < 5 ? 0 : 1);
++  if (p->fb < 0) p->fb = (level < 7 ? 32 : 64);
++  if (p->btMode < 0) p->btMode = (p->algo == 0 ? 0 : 1);
++  if (p->numHashBytes < 0) p->numHashBytes = 4;
++  if (p->mc == 0)  p->mc = (16 + (p->fb >> 1)) >> (p->btMode ? 0 : 1);
++  if (p->numThreads < 0)
++    p->numThreads =
++      #ifndef _7ZIP_ST
++      ((p->btMode && p->algo) ? 2 : 1);
++      #else
++      1;
++      #endif
++}
++
++UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2)
++{
++  CLzmaEncProps props = *props2;
++  LzmaEncProps_Normalize(&props);
++  return props.dictSize;
++}
++
++/* #define LZMA_LOG_BSR */
++/* Define it for Intel's CPU */
++
++
++#ifdef LZMA_LOG_BSR
++
++#define kDicLogSizeMaxCompress 30
++
++#define BSR2_RET(pos, res) { unsigned long i; _BitScanReverse(&i, (pos)); res = (i + i) + ((pos >> (i - 1)) & 1); }
++
++UInt32 GetPosSlot1(UInt32 pos)
++{
++  UInt32 res;
++  BSR2_RET(pos, res);
++  return res;
++}
++#define GetPosSlot2(pos, res) { BSR2_RET(pos, res); }
++#define GetPosSlot(pos, res) { if (pos < 2) res = pos; else BSR2_RET(pos, res); }
++
++#else
++
++#define kNumLogBits (9 + (int)sizeof(size_t) / 2)
++#define kDicLogSizeMaxCompress ((kNumLogBits - 1) * 2 + 7)
++
++void LzmaEnc_FastPosInit(Byte *g_FastPos)
++{
++  int c = 2, slotFast;
++  g_FastPos[0] = 0;
++  g_FastPos[1] = 1;
++  
++  for (slotFast = 2; slotFast < kNumLogBits * 2; slotFast++)
++  {
++    UInt32 k = (1 << ((slotFast >> 1) - 1));
++    UInt32 j;
++    for (j = 0; j < k; j++, c++)
++      g_FastPos[c] = (Byte)slotFast;
++  }
++}
++
++#define BSR2_RET(pos, res) { UInt32 i = 6 + ((kNumLogBits - 1) & \
++  (0 - (((((UInt32)1 << (kNumLogBits + 6)) - 1) - pos) >> 31))); \
++  res = p->g_FastPos[pos >> i] + (i * 2); }
++/*
++#define BSR2_RET(pos, res) { res = (pos < (1 << (kNumLogBits + 6))) ? \
++  p->g_FastPos[pos >> 6] + 12 : \
++  p->g_FastPos[pos >> (6 + kNumLogBits - 1)] + (6 + (kNumLogBits - 1)) * 2; }
++*/
++
++#define GetPosSlot1(pos) p->g_FastPos[pos]
++#define GetPosSlot2(pos, res) { BSR2_RET(pos, res); }
++#define GetPosSlot(pos, res) { if (pos < kNumFullDistances) res = p->g_FastPos[pos]; else BSR2_RET(pos, res); }
++
++#endif
++
++
++#define LZMA_NUM_REPS 4
++
++typedef unsigned CState;
++
++typedef struct
++{
++  UInt32 price;
++
++  CState state;
++  int prev1IsChar;
++  int prev2;
++
++  UInt32 posPrev2;
++  UInt32 backPrev2;
++
++  UInt32 posPrev;
++  UInt32 backPrev;
++  UInt32 backs[LZMA_NUM_REPS];
++} COptimal;
++
++#define kNumOpts (1 << 12)
++
++#define kNumLenToPosStates 4
++#define kNumPosSlotBits 6
++#define kDicLogSizeMin 0
++#define kDicLogSizeMax 32
++#define kDistTableSizeMax (kDicLogSizeMax * 2)
++
++
++#define kNumAlignBits 4
++#define kAlignTableSize (1 << kNumAlignBits)
++#define kAlignMask (kAlignTableSize - 1)
++
++#define kStartPosModelIndex 4
++#define kEndPosModelIndex 14
++#define kNumPosModels (kEndPosModelIndex - kStartPosModelIndex)
++
++#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
++
++#ifdef _LZMA_PROB32
++#define CLzmaProb UInt32
++#else
++#define CLzmaProb UInt16
++#endif
++
++#define LZMA_PB_MAX 4
++#define LZMA_LC_MAX 8
++#define LZMA_LP_MAX 4
++
++#define LZMA_NUM_PB_STATES_MAX (1 << LZMA_PB_MAX)
++
++
++#define kLenNumLowBits 3
++#define kLenNumLowSymbols (1 << kLenNumLowBits)
++#define kLenNumMidBits 3
++#define kLenNumMidSymbols (1 << kLenNumMidBits)
++#define kLenNumHighBits 8
++#define kLenNumHighSymbols (1 << kLenNumHighBits)
++
++#define kLenNumSymbolsTotal (kLenNumLowSymbols + kLenNumMidSymbols + kLenNumHighSymbols)
++
++#define LZMA_MATCH_LEN_MIN 2
++#define LZMA_MATCH_LEN_MAX (LZMA_MATCH_LEN_MIN + kLenNumSymbolsTotal - 1)
++
++#define kNumStates 12
++
++typedef struct
++{
++  CLzmaProb choice;
++  CLzmaProb choice2;
++  CLzmaProb low[LZMA_NUM_PB_STATES_MAX << kLenNumLowBits];
++  CLzmaProb mid[LZMA_NUM_PB_STATES_MAX << kLenNumMidBits];
++  CLzmaProb high[kLenNumHighSymbols];
++} CLenEnc;
++
++typedef struct
++{
++  CLenEnc p;
++  UInt32 prices[LZMA_NUM_PB_STATES_MAX][kLenNumSymbolsTotal];
++  UInt32 tableSize;
++  UInt32 counters[LZMA_NUM_PB_STATES_MAX];
++} CLenPriceEnc;
++
++typedef struct
++{
++  UInt32 range;
++  Byte cache;
++  UInt64 low;
++  UInt64 cacheSize;
++  Byte *buf;
++  Byte *bufLim;
++  Byte *bufBase;
++  ISeqOutStream *outStream;
++  UInt64 processed;
++  SRes res;
++} CRangeEnc;
++
++typedef struct
++{
++  CLzmaProb *litProbs;
++
++  CLzmaProb isMatch[kNumStates][LZMA_NUM_PB_STATES_MAX];
++  CLzmaProb isRep[kNumStates];
++  CLzmaProb isRepG0[kNumStates];
++  CLzmaProb isRepG1[kNumStates];
++  CLzmaProb isRepG2[kNumStates];
++  CLzmaProb isRep0Long[kNumStates][LZMA_NUM_PB_STATES_MAX];
++
++  CLzmaProb posSlotEncoder[kNumLenToPosStates][1 << kNumPosSlotBits];
++  CLzmaProb posEncoders[kNumFullDistances - kEndPosModelIndex];
++  CLzmaProb posAlignEncoder[1 << kNumAlignBits];
++  
++  CLenPriceEnc lenEnc;
++  CLenPriceEnc repLenEnc;
++
++  UInt32 reps[LZMA_NUM_REPS];
++  UInt32 state;
++} CSaveState;
++
++typedef struct
++{
++  IMatchFinder matchFinder;
++  void *matchFinderObj;
++
++  #ifndef _7ZIP_ST
++  Bool mtMode;
++  CMatchFinderMt matchFinderMt;
++  #endif
++
++  CMatchFinder matchFinderBase;
++
++  #ifndef _7ZIP_ST
++  Byte pad[128];
++  #endif
++  
++  UInt32 optimumEndIndex;
++  UInt32 optimumCurrentIndex;
++
++  UInt32 longestMatchLength;
++  UInt32 numPairs;
++  UInt32 numAvail;
++  COptimal opt[kNumOpts];
++  
++  #ifndef LZMA_LOG_BSR
++  Byte g_FastPos[1 << kNumLogBits];
++  #endif
++
++  UInt32 ProbPrices[kBitModelTotal >> kNumMoveReducingBits];
++  UInt32 matches[LZMA_MATCH_LEN_MAX * 2 + 2 + 1];
++  UInt32 numFastBytes;
++  UInt32 additionalOffset;
++  UInt32 reps[LZMA_NUM_REPS];
++  UInt32 state;
++
++  UInt32 posSlotPrices[kNumLenToPosStates][kDistTableSizeMax];
++  UInt32 distancesPrices[kNumLenToPosStates][kNumFullDistances];
++  UInt32 alignPrices[kAlignTableSize];
++  UInt32 alignPriceCount;
++
++  UInt32 distTableSize;
++
++  unsigned lc, lp, pb;
++  unsigned lpMask, pbMask;
++
++  CLzmaProb *litProbs;
++
++  CLzmaProb isMatch[kNumStates][LZMA_NUM_PB_STATES_MAX];
++  CLzmaProb isRep[kNumStates];
++  CLzmaProb isRepG0[kNumStates];
++  CLzmaProb isRepG1[kNumStates];
++  CLzmaProb isRepG2[kNumStates];
++  CLzmaProb isRep0Long[kNumStates][LZMA_NUM_PB_STATES_MAX];
++
++  CLzmaProb posSlotEncoder[kNumLenToPosStates][1 << kNumPosSlotBits];
++  CLzmaProb posEncoders[kNumFullDistances - kEndPosModelIndex];
++  CLzmaProb posAlignEncoder[1 << kNumAlignBits];
++  
++  CLenPriceEnc lenEnc;
++  CLenPriceEnc repLenEnc;
++
++  unsigned lclp;
++
++  Bool fastMode;
++  
++  CRangeEnc rc;
++
++  Bool writeEndMark;
++  UInt64 nowPos64;
++  UInt32 matchPriceCount;
++  Bool finished;
++  Bool multiThread;
++
++  SRes result;
++  UInt32 dictSize;
++  UInt32 matchFinderCycles;
++
++  int needInit;
++
++  CSaveState saveState;
++} CLzmaEnc;
++
++void LzmaEnc_SaveState(CLzmaEncHandle pp)
++{
++  CLzmaEnc *p = (CLzmaEnc *)pp;
++  CSaveState *dest = &p->saveState;
++  int i;
++  dest->lenEnc = p->lenEnc;
++  dest->repLenEnc = p->repLenEnc;
++  dest->state = p->state;
++
++  for (i = 0; i < kNumStates; i++)
++  {
++    memcpy(dest->isMatch[i], p->isMatch[i], sizeof(p->isMatch[i]));
++    memcpy(dest->isRep0Long[i], p->isRep0Long[i], sizeof(p->isRep0Long[i]));
++  }
++  for (i = 0; i < kNumLenToPosStates; i++)
++    memcpy(dest->posSlotEncoder[i], p->posSlotEncoder[i], sizeof(p->posSlotEncoder[i]));
++  memcpy(dest->isRep, p->isRep, sizeof(p->isRep));
++  memcpy(dest->isRepG0, p->isRepG0, sizeof(p->isRepG0));
++  memcpy(dest->isRepG1, p->isRepG1, sizeof(p->isRepG1));
++  memcpy(dest->isRepG2, p->isRepG2, sizeof(p->isRepG2));
++  memcpy(dest->posEncoders, p->posEncoders, sizeof(p->posEncoders));
++  memcpy(dest->posAlignEncoder, p->posAlignEncoder, sizeof(p->posAlignEncoder));
++  memcpy(dest->reps, p->reps, sizeof(p->reps));
++  memcpy(dest->litProbs, p->litProbs, (0x300 << p->lclp) * sizeof(CLzmaProb));
++}
++
++void LzmaEnc_RestoreState(CLzmaEncHandle pp)
++{
++  CLzmaEnc *dest = (CLzmaEnc *)pp;
++  const CSaveState *p = &dest->saveState;
++  int i;
++  dest->lenEnc = p->lenEnc;
++  dest->repLenEnc = p->repLenEnc;
++  dest->state = p->state;
++
++  for (i = 0; i < kNumStates; i++)
++  {
++    memcpy(dest->isMatch[i], p->isMatch[i], sizeof(p->isMatch[i]));
++    memcpy(dest->isRep0Long[i], p->isRep0Long[i], sizeof(p->isRep0Long[i]));
++  }
++  for (i = 0; i < kNumLenToPosStates; i++)
++    memcpy(dest->posSlotEncoder[i], p->posSlotEncoder[i], sizeof(p->posSlotEncoder[i]));
++  memcpy(dest->isRep, p->isRep, sizeof(p->isRep));
++  memcpy(dest->isRepG0, p->isRepG0, sizeof(p->isRepG0));
++  memcpy(dest->isRepG1, p->isRepG1, sizeof(p->isRepG1));
++  memcpy(dest->isRepG2, p->isRepG2, sizeof(p->isRepG2));
++  memcpy(dest->posEncoders, p->posEncoders, sizeof(p->posEncoders));
++  memcpy(dest->posAlignEncoder, p->posAlignEncoder, sizeof(p->posAlignEncoder));
++  memcpy(dest->reps, p->reps, sizeof(p->reps));
++  memcpy(dest->litProbs, p->litProbs, (0x300 << dest->lclp) * sizeof(CLzmaProb));
++}
++
++SRes LzmaEnc_SetProps(CLzmaEncHandle pp, const CLzmaEncProps *props2)
++{
++  CLzmaEnc *p = (CLzmaEnc *)pp;
++  CLzmaEncProps props = *props2;
++  LzmaEncProps_Normalize(&props);
++
++  if (props.lc > LZMA_LC_MAX || props.lp > LZMA_LP_MAX || props.pb > LZMA_PB_MAX ||
++      props.dictSize > (1 << kDicLogSizeMaxCompress) || props.dictSize > (1 << 30))
++    return SZ_ERROR_PARAM;
++  p->dictSize = props.dictSize;
++  p->matchFinderCycles = props.mc;
++  {
++    unsigned fb = props.fb;
++    if (fb < 5)
++      fb = 5;
++    if (fb > LZMA_MATCH_LEN_MAX)
++      fb = LZMA_MATCH_LEN_MAX;
++    p->numFastBytes = fb;
++  }
++  p->lc = props.lc;
++  p->lp = props.lp;
++  p->pb = props.pb;
++  p->fastMode = (props.algo == 0);
++  p->matchFinderBase.btMode = props.btMode;
++  {
++    UInt32 numHashBytes = 4;
++    if (props.btMode)
++    {
++      if (props.numHashBytes < 2)
++        numHashBytes = 2;
++      else if (props.numHashBytes < 4)
++        numHashBytes = props.numHashBytes;
++    }
++    p->matchFinderBase.numHashBytes = numHashBytes;
++  }
++
++  p->matchFinderBase.cutValue = props.mc;
++
++  p->writeEndMark = props.writeEndMark;
++
++  #ifndef _7ZIP_ST
++  /*
++  if (newMultiThread != _multiThread)
++  {
++    ReleaseMatchFinder();
++    _multiThread = newMultiThread;
++  }
++  */
++  p->multiThread = (props.numThreads > 1);
++  #endif
++
++  return SZ_OK;
++}
++
++static const int kLiteralNextStates[kNumStates] = {0, 0, 0, 0, 1, 2, 3, 4,  5,  6,   4, 5};
++static const int kMatchNextStates[kNumStates]   = {7, 7, 7, 7, 7, 7, 7, 10, 10, 10, 10, 10};
++static const int kRepNextStates[kNumStates]     = {8, 8, 8, 8, 8, 8, 8, 11, 11, 11, 11, 11};
++static const int kShortRepNextStates[kNumStates]= {9, 9, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11};
++
++#define IsCharState(s) ((s) < 7)
++
++#define GetLenToPosState(len) (((len) < kNumLenToPosStates + 1) ? (len) - 2 : kNumLenToPosStates - 1)
++
++#define kInfinityPrice (1 << 30)
++
++static void RangeEnc_Construct(CRangeEnc *p)
++{
++  p->outStream = 0;
++  p->bufBase = 0;
++}
++
++#define RangeEnc_GetProcessed(p) ((p)->processed + ((p)->buf - (p)->bufBase) + (p)->cacheSize)
++
++#define RC_BUF_SIZE (1 << 16)
++static int RangeEnc_Alloc(CRangeEnc *p, ISzAlloc *alloc)
++{
++  if (p->bufBase == 0)
++  {
++    p->bufBase = (Byte *)alloc->Alloc(alloc, RC_BUF_SIZE);
++    if (p->bufBase == 0)
++      return 0;
++    p->bufLim = p->bufBase + RC_BUF_SIZE;
++  }
++  return 1;
++}
++
++static void RangeEnc_Free(CRangeEnc *p, ISzAlloc *alloc)
++{
++  alloc->Free(alloc, p->bufBase);
++  p->bufBase = 0;
++}
++
++static void RangeEnc_Init(CRangeEnc *p)
++{
++  /* Stream.Init(); */
++  p->low = 0;
++  p->range = 0xFFFFFFFF;
++  p->cacheSize = 1;
++  p->cache = 0;
++
++  p->buf = p->bufBase;
++
++  p->processed = 0;
++  p->res = SZ_OK;
++}
++
++static void RangeEnc_FlushStream(CRangeEnc *p)
++{
++  size_t num;
++  if (p->res != SZ_OK)
++    return;
++  num = p->buf - p->bufBase;
++  if (num != p->outStream->Write(p->outStream, p->bufBase, num))
++    p->res = SZ_ERROR_WRITE;
++  p->processed += num;
++  p->buf = p->bufBase;
++}
++
++static void MY_FAST_CALL RangeEnc_ShiftLow(CRangeEnc *p)
++{
++  if ((UInt32)p->low < (UInt32)0xFF000000 || (int)(p->low >> 32) != 0)
++  {
++    Byte temp = p->cache;
++    do
++    {
++      Byte *buf = p->buf;
++      *buf++ = (Byte)(temp + (Byte)(p->low >> 32));
++      p->buf = buf;
++      if (buf == p->bufLim)
++        RangeEnc_FlushStream(p);
++      temp = 0xFF;
++    }
++    while (--p->cacheSize != 0);
++    p->cache = (Byte)((UInt32)p->low >> 24);
++  }
++  p->cacheSize++;
++  p->low = (UInt32)p->low << 8;
++}
++
++static void RangeEnc_FlushData(CRangeEnc *p)
++{
++  int i;
++  for (i = 0; i < 5; i++)
++    RangeEnc_ShiftLow(p);
++}
++
++static void RangeEnc_EncodeDirectBits(CRangeEnc *p, UInt32 value, int numBits)
++{
++  do
++  {
++    p->range >>= 1;
++    p->low += p->range & (0 - ((value >> --numBits) & 1));
++    if (p->range < kTopValue)
++    {
++      p->range <<= 8;
++      RangeEnc_ShiftLow(p);
++    }
++  }
++  while (numBits != 0);
++}
++
++static void RangeEnc_EncodeBit(CRangeEnc *p, CLzmaProb *prob, UInt32 symbol)
++{
++  UInt32 ttt = *prob;
++  UInt32 newBound = (p->range >> kNumBitModelTotalBits) * ttt;
++  if (symbol == 0)
++  {
++    p->range = newBound;
++    ttt += (kBitModelTotal - ttt) >> kNumMoveBits;
++  }
++  else
++  {
++    p->low += newBound;
++    p->range -= newBound;
++    ttt -= ttt >> kNumMoveBits;
++  }
++  *prob = (CLzmaProb)ttt;
++  if (p->range < kTopValue)
++  {
++    p->range <<= 8;
++    RangeEnc_ShiftLow(p);
++  }
++}
++
++static void LitEnc_Encode(CRangeEnc *p, CLzmaProb *probs, UInt32 symbol)
++{
++  symbol |= 0x100;
++  do
++  {
++    RangeEnc_EncodeBit(p, probs + (symbol >> 8), (symbol >> 7) & 1);
++    symbol <<= 1;
++  }
++  while (symbol < 0x10000);
++}
++
++static void LitEnc_EncodeMatched(CRangeEnc *p, CLzmaProb *probs, UInt32 symbol, UInt32 matchByte)
++{
++  UInt32 offs = 0x100;
++  symbol |= 0x100;
++  do
++  {
++    matchByte <<= 1;
++    RangeEnc_EncodeBit(p, probs + (offs + (matchByte & offs) + (symbol >> 8)), (symbol >> 7) & 1);
++    symbol <<= 1;
++    offs &= ~(matchByte ^ symbol);
++  }
++  while (symbol < 0x10000);
++}
++
++void LzmaEnc_InitPriceTables(UInt32 *ProbPrices)
++{
++  UInt32 i;
++  for (i = (1 << kNumMoveReducingBits) / 2; i < kBitModelTotal; i += (1 << kNumMoveReducingBits))
++  {
++    const int kCyclesBits = kNumBitPriceShiftBits;
++    UInt32 w = i;
++    UInt32 bitCount = 0;
++    int j;
++    for (j = 0; j < kCyclesBits; j++)
++    {
++      w = w * w;
++      bitCount <<= 1;
++      while (w >= ((UInt32)1 << 16))
++      {
++        w >>= 1;
++        bitCount++;
++      }
++    }
++    ProbPrices[i >> kNumMoveReducingBits] = ((kNumBitModelTotalBits << kCyclesBits) - 15 - bitCount);
++  }
++}
++
++
++#define GET_PRICE(prob, symbol) \
++  p->ProbPrices[((prob) ^ (((-(int)(symbol))) & (kBitModelTotal - 1))) >> kNumMoveReducingBits];
++
++#define GET_PRICEa(prob, symbol) \
++  ProbPrices[((prob) ^ ((-((int)(symbol))) & (kBitModelTotal - 1))) >> kNumMoveReducingBits];
++
++#define GET_PRICE_0(prob) p->ProbPrices[(prob) >> kNumMoveReducingBits]
++#define GET_PRICE_1(prob) p->ProbPrices[((prob) ^ (kBitModelTotal - 1)) >> kNumMoveReducingBits]
++
++#define GET_PRICE_0a(prob) ProbPrices[(prob) >> kNumMoveReducingBits]
++#define GET_PRICE_1a(prob) ProbPrices[((prob) ^ (kBitModelTotal - 1)) >> kNumMoveReducingBits]
++
++static UInt32 LitEnc_GetPrice(const CLzmaProb *probs, UInt32 symbol, UInt32 *ProbPrices)
++{
++  UInt32 price = 0;
++  symbol |= 0x100;
++  do
++  {
++    price += GET_PRICEa(probs[symbol >> 8], (symbol >> 7) & 1);
++    symbol <<= 1;
++  }
++  while (symbol < 0x10000);
++  return price;
++}
++
++static UInt32 LitEnc_GetPriceMatched(const CLzmaProb *probs, UInt32 symbol, UInt32 matchByte, UInt32 *ProbPrices)
++{
++  UInt32 price = 0;
++  UInt32 offs = 0x100;
++  symbol |= 0x100;
++  do
++  {
++    matchByte <<= 1;
++    price += GET_PRICEa(probs[offs + (matchByte & offs) + (symbol >> 8)], (symbol >> 7) & 1);
++    symbol <<= 1;
++    offs &= ~(matchByte ^ symbol);
++  }
++  while (symbol < 0x10000);
++  return price;
++}
++
++
++static void RcTree_Encode(CRangeEnc *rc, CLzmaProb *probs, int numBitLevels, UInt32 symbol)
++{
++  UInt32 m = 1;
++  int i;
++  for (i = numBitLevels; i != 0;)
++  {
++    UInt32 bit;
++    i--;
++    bit = (symbol >> i) & 1;
++    RangeEnc_EncodeBit(rc, probs + m, bit);
++    m = (m << 1) | bit;
++  }
++}
++
++static void RcTree_ReverseEncode(CRangeEnc *rc, CLzmaProb *probs, int numBitLevels, UInt32 symbol)
++{
++  UInt32 m = 1;
++  int i;
++  for (i = 0; i < numBitLevels; i++)
++  {
++    UInt32 bit = symbol & 1;
++    RangeEnc_EncodeBit(rc, probs + m, bit);
++    m = (m << 1) | bit;
++    symbol >>= 1;
++  }
++}
++
++static UInt32 RcTree_GetPrice(const CLzmaProb *probs, int numBitLevels, UInt32 symbol, UInt32 *ProbPrices)
++{
++  UInt32 price = 0;
++  symbol |= (1 << numBitLevels);
++  while (symbol != 1)
++  {
++    price += GET_PRICEa(probs[symbol >> 1], symbol & 1);
++    symbol >>= 1;
++  }
++  return price;
++}
++
++static UInt32 RcTree_ReverseGetPrice(const CLzmaProb *probs, int numBitLevels, UInt32 symbol, UInt32 *ProbPrices)
++{
++  UInt32 price = 0;
++  UInt32 m = 1;
++  int i;
++  for (i = numBitLevels; i != 0; i--)
++  {
++    UInt32 bit = symbol & 1;
++    symbol >>= 1;
++    price += GET_PRICEa(probs[m], bit);
++    m = (m << 1) | bit;
++  }
++  return price;
++}
++
++
++static void LenEnc_Init(CLenEnc *p)
++{
++  unsigned i;
++  p->choice = p->choice2 = kProbInitValue;
++  for (i = 0; i < (LZMA_NUM_PB_STATES_MAX << kLenNumLowBits); i++)
++    p->low[i] = kProbInitValue;
++  for (i = 0; i < (LZMA_NUM_PB_STATES_MAX << kLenNumMidBits); i++)
++    p->mid[i] = kProbInitValue;
++  for (i = 0; i < kLenNumHighSymbols; i++)
++    p->high[i] = kProbInitValue;
++}
++
++static void LenEnc_Encode(CLenEnc *p, CRangeEnc *rc, UInt32 symbol, UInt32 posState)
++{
++  if (symbol < kLenNumLowSymbols)
++  {
++    RangeEnc_EncodeBit(rc, &p->choice, 0);
++    RcTree_Encode(rc, p->low + (posState << kLenNumLowBits), kLenNumLowBits, symbol);
++  }
++  else
++  {
++    RangeEnc_EncodeBit(rc, &p->choice, 1);
++    if (symbol < kLenNumLowSymbols + kLenNumMidSymbols)
++    {
++      RangeEnc_EncodeBit(rc, &p->choice2, 0);
++      RcTree_Encode(rc, p->mid + (posState << kLenNumMidBits), kLenNumMidBits, symbol - kLenNumLowSymbols);
++    }
++    else
++    {
++      RangeEnc_EncodeBit(rc, &p->choice2, 1);
++      RcTree_Encode(rc, p->high, kLenNumHighBits, symbol - kLenNumLowSymbols - kLenNumMidSymbols);
++    }
++  }
++}
++
++static void LenEnc_SetPrices(CLenEnc *p, UInt32 posState, UInt32 numSymbols, UInt32 *prices, UInt32 *ProbPrices)
++{
++  UInt32 a0 = GET_PRICE_0a(p->choice);
++  UInt32 a1 = GET_PRICE_1a(p->choice);
++  UInt32 b0 = a1 + GET_PRICE_0a(p->choice2);
++  UInt32 b1 = a1 + GET_PRICE_1a(p->choice2);
++  UInt32 i = 0;
++  for (i = 0; i < kLenNumLowSymbols; i++)
++  {
++    if (i >= numSymbols)
++      return;
++    prices[i] = a0 + RcTree_GetPrice(p->low + (posState << kLenNumLowBits), kLenNumLowBits, i, ProbPrices);
++  }
++  for (; i < kLenNumLowSymbols + kLenNumMidSymbols; i++)
++  {
++    if (i >= numSymbols)
++      return;
++    prices[i] = b0 + RcTree_GetPrice(p->mid + (posState << kLenNumMidBits), kLenNumMidBits, i - kLenNumLowSymbols, ProbPrices);
++  }
++  for (; i < numSymbols; i++)
++    prices[i] = b1 + RcTree_GetPrice(p->high, kLenNumHighBits, i - kLenNumLowSymbols - kLenNumMidSymbols, ProbPrices);
++}
++
++static void MY_FAST_CALL LenPriceEnc_UpdateTable(CLenPriceEnc *p, UInt32 posState, UInt32 *ProbPrices)
++{
++  LenEnc_SetPrices(&p->p, posState, p->tableSize, p->prices[posState], ProbPrices);
++  p->counters[posState] = p->tableSize;
++}
++
++static void LenPriceEnc_UpdateTables(CLenPriceEnc *p, UInt32 numPosStates, UInt32 *ProbPrices)
++{
++  UInt32 posState;
++  for (posState = 0; posState < numPosStates; posState++)
++    LenPriceEnc_UpdateTable(p, posState, ProbPrices);
++}
++
++static void LenEnc_Encode2(CLenPriceEnc *p, CRangeEnc *rc, UInt32 symbol, UInt32 posState, Bool updatePrice, UInt32 *ProbPrices)
++{
++  LenEnc_Encode(&p->p, rc, symbol, posState);
++  if (updatePrice)
++    if (--p->counters[posState] == 0)
++      LenPriceEnc_UpdateTable(p, posState, ProbPrices);
++}
++
++
++
++
++static void MovePos(CLzmaEnc *p, UInt32 num)
++{
++  #ifdef SHOW_STAT
++  ttt += num;
++  printf("\n MovePos %d", num);
++  #endif
++  if (num != 0)
++  {
++    p->additionalOffset += num;
++    p->matchFinder.Skip(p->matchFinderObj, num);
++  }
++}
++
++static UInt32 ReadMatchDistances(CLzmaEnc *p, UInt32 *numDistancePairsRes)
++{
++  UInt32 lenRes = 0, numPairs;
++  p->numAvail = p->matchFinder.GetNumAvailableBytes(p->matchFinderObj);
++  numPairs = p->matchFinder.GetMatches(p->matchFinderObj, p->matches);
++  #ifdef SHOW_STAT
++  printf("\n i = %d numPairs = %d    ", ttt, numPairs / 2);
++  ttt++;
++  {
++    UInt32 i;
++    for (i = 0; i < numPairs; i += 2)
++      printf("%2d %6d   | ", p->matches[i], p->matches[i + 1]);
++  }
++  #endif
++  if (numPairs > 0)
++  {
++    lenRes = p->matches[numPairs - 2];
++    if (lenRes == p->numFastBytes)
++    {
++      const Byte *pby = p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - 1;
++      UInt32 distance = p->matches[numPairs - 1] + 1;
++      UInt32 numAvail = p->numAvail;
++      if (numAvail > LZMA_MATCH_LEN_MAX)
++        numAvail = LZMA_MATCH_LEN_MAX;
++      {
++        const Byte *pby2 = pby - distance;
++        for (; lenRes < numAvail && pby[lenRes] == pby2[lenRes]; lenRes++);
++      }
++    }
++  }
++  p->additionalOffset++;
++  *numDistancePairsRes = numPairs;
++  return lenRes;
++}
++
++
++#define MakeAsChar(p) (p)->backPrev = (UInt32)(-1); (p)->prev1IsChar = False;
++#define MakeAsShortRep(p) (p)->backPrev = 0; (p)->prev1IsChar = False;
++#define IsShortRep(p) ((p)->backPrev == 0)
++
++static UInt32 GetRepLen1Price(CLzmaEnc *p, UInt32 state, UInt32 posState)
++{
++  return
++    GET_PRICE_0(p->isRepG0[state]) +
++    GET_PRICE_0(p->isRep0Long[state][posState]);
++}
++
++static UInt32 GetPureRepPrice(CLzmaEnc *p, UInt32 repIndex, UInt32 state, UInt32 posState)
++{
++  UInt32 price;
++  if (repIndex == 0)
++  {
++    price = GET_PRICE_0(p->isRepG0[state]);
++    price += GET_PRICE_1(p->isRep0Long[state][posState]);
++  }
++  else
++  {
++    price = GET_PRICE_1(p->isRepG0[state]);
++    if (repIndex == 1)
++      price += GET_PRICE_0(p->isRepG1[state]);
++    else
++    {
++      price += GET_PRICE_1(p->isRepG1[state]);
++      price += GET_PRICE(p->isRepG2[state], repIndex - 2);
++    }
++  }
++  return price;
++}
++
++static UInt32 GetRepPrice(CLzmaEnc *p, UInt32 repIndex, UInt32 len, UInt32 state, UInt32 posState)
++{
++  return p->repLenEnc.prices[posState][len - LZMA_MATCH_LEN_MIN] +
++    GetPureRepPrice(p, repIndex, state, posState);
++}
++
++static UInt32 Backward(CLzmaEnc *p, UInt32 *backRes, UInt32 cur)
++{
++  UInt32 posMem = p->opt[cur].posPrev;
++  UInt32 backMem = p->opt[cur].backPrev;
++  p->optimumEndIndex = cur;
++  do
++  {
++    if (p->opt[cur].prev1IsChar)
++    {
++      MakeAsChar(&p->opt[posMem])
++      p->opt[posMem].posPrev = posMem - 1;
++      if (p->opt[cur].prev2)
++      {
++        p->opt[posMem - 1].prev1IsChar = False;
++        p->opt[posMem - 1].posPrev = p->opt[cur].posPrev2;
++        p->opt[posMem - 1].backPrev = p->opt[cur].backPrev2;
++      }
++    }
++    {
++      UInt32 posPrev = posMem;
++      UInt32 backCur = backMem;
++      
++      backMem = p->opt[posPrev].backPrev;
++      posMem = p->opt[posPrev].posPrev;
++      
++      p->opt[posPrev].backPrev = backCur;
++      p->opt[posPrev].posPrev = cur;
++      cur = posPrev;
++    }
++  }
++  while (cur != 0);
++  *backRes = p->opt[0].backPrev;
++  p->optimumCurrentIndex  = p->opt[0].posPrev;
++  return p->optimumCurrentIndex;
++}
++
++#define LIT_PROBS(pos, prevByte) (p->litProbs + ((((pos) & p->lpMask) << p->lc) + ((prevByte) >> (8 - p->lc))) * 0x300)
++
++static UInt32 GetOptimum(CLzmaEnc *p, UInt32 position, UInt32 *backRes)
++{
++  UInt32 numAvail, mainLen, numPairs, repMaxIndex, i, posState, lenEnd, len, cur;
++  UInt32 matchPrice, repMatchPrice, normalMatchPrice;
++  UInt32 reps[LZMA_NUM_REPS], repLens[LZMA_NUM_REPS];
++  UInt32 *matches;
++  const Byte *data;
++  Byte curByte, matchByte;
++  if (p->optimumEndIndex != p->optimumCurrentIndex)
++  {
++    const COptimal *opt = &p->opt[p->optimumCurrentIndex];
++    UInt32 lenRes = opt->posPrev - p->optimumCurrentIndex;
++    *backRes = opt->backPrev;
++    p->optimumCurrentIndex = opt->posPrev;
++    return lenRes;
++  }
++  p->optimumCurrentIndex = p->optimumEndIndex = 0;
++  
++  if (p->additionalOffset == 0)
++    mainLen = ReadMatchDistances(p, &numPairs);
++  else
++  {
++    mainLen = p->longestMatchLength;
++    numPairs = p->numPairs;
++  }
++
++  numAvail = p->numAvail;
++  if (numAvail < 2)
++  {
++    *backRes = (UInt32)(-1);
++    return 1;
++  }
++  if (numAvail > LZMA_MATCH_LEN_MAX)
++    numAvail = LZMA_MATCH_LEN_MAX;
++
++  data = p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - 1;
++  repMaxIndex = 0;
++  for (i = 0; i < LZMA_NUM_REPS; i++)
++  {
++    UInt32 lenTest;
++    const Byte *data2;
++    reps[i] = p->reps[i];
++    data2 = data - (reps[i] + 1);
++    if (data[0] != data2[0] || data[1] != data2[1])
++    {
++      repLens[i] = 0;
++      continue;
++    }
++    for (lenTest = 2; lenTest < numAvail && data[lenTest] == data2[lenTest]; lenTest++);
++    repLens[i] = lenTest;
++    if (lenTest > repLens[repMaxIndex])
++      repMaxIndex = i;
++  }
++  if (repLens[repMaxIndex] >= p->numFastBytes)
++  {
++    UInt32 lenRes;
++    *backRes = repMaxIndex;
++    lenRes = repLens[repMaxIndex];
++    MovePos(p, lenRes - 1);
++    return lenRes;
++  }
++
++  matches = p->matches;
++  if (mainLen >= p->numFastBytes)
++  {
++    *backRes = matches[numPairs - 1] + LZMA_NUM_REPS;
++    MovePos(p, mainLen - 1);
++    return mainLen;
++  }
++  curByte = *data;
++  matchByte = *(data - (reps[0] + 1));
++
++  if (mainLen < 2 && curByte != matchByte && repLens[repMaxIndex] < 2)
++  {
++    *backRes = (UInt32)-1;
++    return 1;
++  }
++
++  p->opt[0].state = (CState)p->state;
++
++  posState = (position & p->pbMask);
++
++  {
++    const CLzmaProb *probs = LIT_PROBS(position, *(data - 1));
++    p->opt[1].price = GET_PRICE_0(p->isMatch[p->state][posState]) +
++        (!IsCharState(p->state) ?
++          LitEnc_GetPriceMatched(probs, curByte, matchByte, p->ProbPrices) :
++          LitEnc_GetPrice(probs, curByte, p->ProbPrices));
++  }
++
++  MakeAsChar(&p->opt[1]);
++
++  matchPrice = GET_PRICE_1(p->isMatch[p->state][posState]);
++  repMatchPrice = matchPrice + GET_PRICE_1(p->isRep[p->state]);
++
++  if (matchByte == curByte)
++  {
++    UInt32 shortRepPrice = repMatchPrice + GetRepLen1Price(p, p->state, posState);
++    if (shortRepPrice < p->opt[1].price)
++    {
++      p->opt[1].price = shortRepPrice;
++      MakeAsShortRep(&p->opt[1]);
++    }
++  }
++  lenEnd = ((mainLen >= repLens[repMaxIndex]) ? mainLen : repLens[repMaxIndex]);
++
++  if (lenEnd < 2)
++  {
++    *backRes = p->opt[1].backPrev;
++    return 1;
++  }
++
++  p->opt[1].posPrev = 0;
++  for (i = 0; i < LZMA_NUM_REPS; i++)
++    p->opt[0].backs[i] = reps[i];
++
++  len = lenEnd;
++  do
++    p->opt[len--].price = kInfinityPrice;
++  while (len >= 2);
++
++  for (i = 0; i < LZMA_NUM_REPS; i++)
++  {
++    UInt32 repLen = repLens[i];
++    UInt32 price;
++    if (repLen < 2)
++      continue;
++    price = repMatchPrice + GetPureRepPrice(p, i, p->state, posState);
++    do
++    {
++      UInt32 curAndLenPrice = price + p->repLenEnc.prices[posState][repLen - 2];
++      COptimal *opt = &p->opt[repLen];
++      if (curAndLenPrice < opt->price)
++      {
++        opt->price = curAndLenPrice;
++        opt->posPrev = 0;
++        opt->backPrev = i;
++        opt->prev1IsChar = False;
++      }
++    }
++    while (--repLen >= 2);
++  }
++
++  normalMatchPrice = matchPrice + GET_PRICE_0(p->isRep[p->state]);
++
++  len = ((repLens[0] >= 2) ? repLens[0] + 1 : 2);
++  if (len <= mainLen)
++  {
++    UInt32 offs = 0;
++    while (len > matches[offs])
++      offs += 2;
++    for (; ; len++)
++    {
++      COptimal *opt;
++      UInt32 distance = matches[offs + 1];
++
++      UInt32 curAndLenPrice = normalMatchPrice + p->lenEnc.prices[posState][len - LZMA_MATCH_LEN_MIN];
++      UInt32 lenToPosState = GetLenToPosState(len);
++      if (distance < kNumFullDistances)
++        curAndLenPrice += p->distancesPrices[lenToPosState][distance];
++      else
++      {
++        UInt32 slot;
++        GetPosSlot2(distance, slot);
++        curAndLenPrice += p->alignPrices[distance & kAlignMask] + p->posSlotPrices[lenToPosState][slot];
++      }
++      opt = &p->opt[len];
++      if (curAndLenPrice < opt->price)
++      {
++        opt->price = curAndLenPrice;
++        opt->posPrev = 0;
++        opt->backPrev = distance + LZMA_NUM_REPS;
++        opt->prev1IsChar = False;
++      }
++      if (len == matches[offs])
++      {
++        offs += 2;
++        if (offs == numPairs)
++          break;
++      }
++    }
++  }
++
++  cur = 0;
++
++    #ifdef SHOW_STAT2
++    if (position >= 0)
++    {
++      unsigned i;
++      printf("\n pos = %4X", position);
++      for (i = cur; i <= lenEnd; i++)
++      printf("\nprice[%4X] = %d", position - cur + i, p->opt[i].price);
++    }
++    #endif
++
++  for (;;)
++  {
++    UInt32 numAvailFull, newLen, numPairs, posPrev, state, posState, startLen;
++    UInt32 curPrice, curAnd1Price, matchPrice, repMatchPrice;
++    Bool nextIsChar;
++    Byte curByte, matchByte;
++    const Byte *data;
++    COptimal *curOpt;
++    COptimal *nextOpt;
++
++    cur++;
++    if (cur == lenEnd)
++      return Backward(p, backRes, cur);
++
++    newLen = ReadMatchDistances(p, &numPairs);
++    if (newLen >= p->numFastBytes)
++    {
++      p->numPairs = numPairs;
++      p->longestMatchLength = newLen;
++      return Backward(p, backRes, cur);
++    }
++    position++;
++    curOpt = &p->opt[cur];
++    posPrev = curOpt->posPrev;
++    if (curOpt->prev1IsChar)
++    {
++      posPrev--;
++      if (curOpt->prev2)
++      {
++        state = p->opt[curOpt->posPrev2].state;
++        if (curOpt->backPrev2 < LZMA_NUM_REPS)
++          state = kRepNextStates[state];
++        else
++          state = kMatchNextStates[state];
++      }
++      else
++        state = p->opt[posPrev].state;
++      state = kLiteralNextStates[state];
++    }
++    else
++      state = p->opt[posPrev].state;
++    if (posPrev == cur - 1)
++    {
++      if (IsShortRep(curOpt))
++        state = kShortRepNextStates[state];
++      else
++        state = kLiteralNextStates[state];
++    }
++    else
++    {
++      UInt32 pos;
++      const COptimal *prevOpt;
++      if (curOpt->prev1IsChar && curOpt->prev2)
++      {
++        posPrev = curOpt->posPrev2;
++        pos = curOpt->backPrev2;
++        state = kRepNextStates[state];
++      }
++      else
++      {
++        pos = curOpt->backPrev;
++        if (pos < LZMA_NUM_REPS)
++          state = kRepNextStates[state];
++        else
++          state = kMatchNextStates[state];
++      }
++      prevOpt = &p->opt[posPrev];
++      if (pos < LZMA_NUM_REPS)
++      {
++        UInt32 i;
++        reps[0] = prevOpt->backs[pos];
++        for (i = 1; i <= pos; i++)
++          reps[i] = prevOpt->backs[i - 1];
++        for (; i < LZMA_NUM_REPS; i++)
++          reps[i] = prevOpt->backs[i];
++      }
++      else
++      {
++        UInt32 i;
++        reps[0] = (pos - LZMA_NUM_REPS);
++        for (i = 1; i < LZMA_NUM_REPS; i++)
++          reps[i] = prevOpt->backs[i - 1];
++      }
++    }
++    curOpt->state = (CState)state;
++
++    curOpt->backs[0] = reps[0];
++    curOpt->backs[1] = reps[1];
++    curOpt->backs[2] = reps[2];
++    curOpt->backs[3] = reps[3];
++
++    curPrice = curOpt->price;
++    nextIsChar = False;
++    data = p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - 1;
++    curByte = *data;
++    matchByte = *(data - (reps[0] + 1));
++
++    posState = (position & p->pbMask);
++
++    curAnd1Price = curPrice + GET_PRICE_0(p->isMatch[state][posState]);
++    {
++      const CLzmaProb *probs = LIT_PROBS(position, *(data - 1));
++      curAnd1Price +=
++        (!IsCharState(state) ?
++          LitEnc_GetPriceMatched(probs, curByte, matchByte, p->ProbPrices) :
++          LitEnc_GetPrice(probs, curByte, p->ProbPrices));
++    }
++
++    nextOpt = &p->opt[cur + 1];
++
++    if (curAnd1Price < nextOpt->price)
++    {
++      nextOpt->price = curAnd1Price;
++      nextOpt->posPrev = cur;
++      MakeAsChar(nextOpt);
++      nextIsChar = True;
++    }
++
++    matchPrice = curPrice + GET_PRICE_1(p->isMatch[state][posState]);
++    repMatchPrice = matchPrice + GET_PRICE_1(p->isRep[state]);
++    
++    if (matchByte == curByte && !(nextOpt->posPrev < cur && nextOpt->backPrev == 0))
++    {
++      UInt32 shortRepPrice = repMatchPrice + GetRepLen1Price(p, state, posState);
++      if (shortRepPrice <= nextOpt->price)
++      {
++        nextOpt->price = shortRepPrice;
++        nextOpt->posPrev = cur;
++        MakeAsShortRep(nextOpt);
++        nextIsChar = True;
++      }
++    }
++    numAvailFull = p->numAvail;
++    {
++      UInt32 temp = kNumOpts - 1 - cur;
++      if (temp < numAvailFull)
++        numAvailFull = temp;
++    }
++
++    if (numAvailFull < 2)
++      continue;
++    numAvail = (numAvailFull <= p->numFastBytes ? numAvailFull : p->numFastBytes);
++
++    if (!nextIsChar && matchByte != curByte) /* speed optimization */
++    {
++      /* try Literal + rep0 */
++      UInt32 temp;
++      UInt32 lenTest2;
++      const Byte *data2 = data - (reps[0] + 1);
++      UInt32 limit = p->numFastBytes + 1;
++      if (limit > numAvailFull)
++        limit = numAvailFull;
++
++      for (temp = 1; temp < limit && data[temp] == data2[temp]; temp++);
++      lenTest2 = temp - 1;
++      if (lenTest2 >= 2)
++      {
++        UInt32 state2 = kLiteralNextStates[state];
++        UInt32 posStateNext = (position + 1) & p->pbMask;
++        UInt32 nextRepMatchPrice = curAnd1Price +
++            GET_PRICE_1(p->isMatch[state2][posStateNext]) +
++            GET_PRICE_1(p->isRep[state2]);
++        /* for (; lenTest2 >= 2; lenTest2--) */
++        {
++          UInt32 curAndLenPrice;
++          COptimal *opt;
++          UInt32 offset = cur + 1 + lenTest2;
++          while (lenEnd < offset)
++            p->opt[++lenEnd].price = kInfinityPrice;
++          curAndLenPrice = nextRepMatchPrice + GetRepPrice(p, 0, lenTest2, state2, posStateNext);
++          opt = &p->opt[offset];
++          if (curAndLenPrice < opt->price)
++          {
++            opt->price = curAndLenPrice;
++            opt->posPrev = cur + 1;
++            opt->backPrev = 0;
++            opt->prev1IsChar = True;
++            opt->prev2 = False;
++          }
++        }
++      }
++    }
++    
++    startLen = 2; /* speed optimization */
++    {
++    UInt32 repIndex;
++    for (repIndex = 0; repIndex < LZMA_NUM_REPS; repIndex++)
++    {
++      UInt32 lenTest;
++      UInt32 lenTestTemp;
++      UInt32 price;
++      const Byte *data2 = data - (reps[repIndex] + 1);
++      if (data[0] != data2[0] || data[1] != data2[1])
++        continue;
++      for (lenTest = 2; lenTest < numAvail && data[lenTest] == data2[lenTest]; lenTest++);
++      while (lenEnd < cur + lenTest)
++        p->opt[++lenEnd].price = kInfinityPrice;
++      lenTestTemp = lenTest;
++      price = repMatchPrice + GetPureRepPrice(p, repIndex, state, posState);
++      do
++      {
++        UInt32 curAndLenPrice = price + p->repLenEnc.prices[posState][lenTest - 2];
++        COptimal *opt = &p->opt[cur + lenTest];
++        if (curAndLenPrice < opt->price)
++        {
++          opt->price = curAndLenPrice;
++          opt->posPrev = cur;
++          opt->backPrev = repIndex;
++          opt->prev1IsChar = False;
++        }
++      }
++      while (--lenTest >= 2);
++      lenTest = lenTestTemp;
++      
++      if (repIndex == 0)
++        startLen = lenTest + 1;
++        
++      /* if (_maxMode) */
++        {
++          UInt32 lenTest2 = lenTest + 1;
++          UInt32 limit = lenTest2 + p->numFastBytes;
++          UInt32 nextRepMatchPrice;
++          if (limit > numAvailFull)
++            limit = numAvailFull;
++          for (; lenTest2 < limit && data[lenTest2] == data2[lenTest2]; lenTest2++);
++          lenTest2 -= lenTest + 1;
++          if (lenTest2 >= 2)
++          {
++            UInt32 state2 = kRepNextStates[state];
++            UInt32 posStateNext = (position + lenTest) & p->pbMask;
++            UInt32 curAndLenCharPrice =
++                price + p->repLenEnc.prices[posState][lenTest - 2] +
++                GET_PRICE_0(p->isMatch[state2][posStateNext]) +
++                LitEnc_GetPriceMatched(LIT_PROBS(position + lenTest, data[lenTest - 1]),
++                    data[lenTest], data2[lenTest], p->ProbPrices);
++            state2 = kLiteralNextStates[state2];
++            posStateNext = (position + lenTest + 1) & p->pbMask;
++            nextRepMatchPrice = curAndLenCharPrice +
++                GET_PRICE_1(p->isMatch[state2][posStateNext]) +
++                GET_PRICE_1(p->isRep[state2]);
++            
++            /* for (; lenTest2 >= 2; lenTest2--) */
++            {
++              UInt32 curAndLenPrice;
++              COptimal *opt;
++              UInt32 offset = cur + lenTest + 1 + lenTest2;
++              while (lenEnd < offset)
++                p->opt[++lenEnd].price = kInfinityPrice;
++              curAndLenPrice = nextRepMatchPrice + GetRepPrice(p, 0, lenTest2, state2, posStateNext);
++              opt = &p->opt[offset];
++              if (curAndLenPrice < opt->price)
++              {
++                opt->price = curAndLenPrice;
++                opt->posPrev = cur + lenTest + 1;
++                opt->backPrev = 0;
++                opt->prev1IsChar = True;
++                opt->prev2 = True;
++                opt->posPrev2 = cur;
++                opt->backPrev2 = repIndex;
++              }
++            }
++          }
++        }
++    }
++    }
++    /* for (UInt32 lenTest = 2; lenTest <= newLen; lenTest++) */
++    if (newLen > numAvail)
++    {
++      newLen = numAvail;
++      for (numPairs = 0; newLen > matches[numPairs]; numPairs += 2);
++      matches[numPairs] = newLen;
++      numPairs += 2;
++    }
++    if (newLen >= startLen)
++    {
++      UInt32 normalMatchPrice = matchPrice + GET_PRICE_0(p->isRep[state]);
++      UInt32 offs, curBack, posSlot;
++      UInt32 lenTest;
++      while (lenEnd < cur + newLen)
++        p->opt[++lenEnd].price = kInfinityPrice;
++
++      offs = 0;
++      while (startLen > matches[offs])
++        offs += 2;
++      curBack = matches[offs + 1];
++      GetPosSlot2(curBack, posSlot);
++      for (lenTest = /*2*/ startLen; ; lenTest++)
++      {
++        UInt32 curAndLenPrice = normalMatchPrice + p->lenEnc.prices[posState][lenTest - LZMA_MATCH_LEN_MIN];
++        UInt32 lenToPosState = GetLenToPosState(lenTest);
++        COptimal *opt;
++        if (curBack < kNumFullDistances)
++          curAndLenPrice += p->distancesPrices[lenToPosState][curBack];
++        else
++          curAndLenPrice += p->posSlotPrices[lenToPosState][posSlot] + p->alignPrices[curBack & kAlignMask];
++        
++        opt = &p->opt[cur + lenTest];
++        if (curAndLenPrice < opt->price)
++        {
++          opt->price = curAndLenPrice;
++          opt->posPrev = cur;
++          opt->backPrev = curBack + LZMA_NUM_REPS;
++          opt->prev1IsChar = False;
++        }
++
++        if (/*_maxMode && */lenTest == matches[offs])
++        {
++          /* Try Match + Literal + Rep0 */
++          const Byte *data2 = data - (curBack + 1);
++          UInt32 lenTest2 = lenTest + 1;
++          UInt32 limit = lenTest2 + p->numFastBytes;
++          UInt32 nextRepMatchPrice;
++          if (limit > numAvailFull)
++            limit = numAvailFull;
++          for (; lenTest2 < limit && data[lenTest2] == data2[lenTest2]; lenTest2++);
++          lenTest2 -= lenTest + 1;
++          if (lenTest2 >= 2)
++          {
++            UInt32 state2 = kMatchNextStates[state];
++            UInt32 posStateNext = (position + lenTest) & p->pbMask;
++            UInt32 curAndLenCharPrice = curAndLenPrice +
++                GET_PRICE_0(p->isMatch[state2][posStateNext]) +
++                LitEnc_GetPriceMatched(LIT_PROBS(position + lenTest, data[lenTest - 1]),
++                    data[lenTest], data2[lenTest], p->ProbPrices);
++            state2 = kLiteralNextStates[state2];
++            posStateNext = (posStateNext + 1) & p->pbMask;
++            nextRepMatchPrice = curAndLenCharPrice +
++                GET_PRICE_1(p->isMatch[state2][posStateNext]) +
++                GET_PRICE_1(p->isRep[state2]);
++            
++            /* for (; lenTest2 >= 2; lenTest2--) */
++            {
++              UInt32 offset = cur + lenTest + 1 + lenTest2;
++              UInt32 curAndLenPrice;
++              COptimal *opt;
++              while (lenEnd < offset)
++                p->opt[++lenEnd].price = kInfinityPrice;
++              curAndLenPrice = nextRepMatchPrice + GetRepPrice(p, 0, lenTest2, state2, posStateNext);
++              opt = &p->opt[offset];
++              if (curAndLenPrice < opt->price)
++              {
++                opt->price = curAndLenPrice;
++                opt->posPrev = cur + lenTest + 1;
++                opt->backPrev = 0;
++                opt->prev1IsChar = True;
++                opt->prev2 = True;
++                opt->posPrev2 = cur;
++                opt->backPrev2 = curBack + LZMA_NUM_REPS;
++              }
++            }
++          }
++          offs += 2;
++          if (offs == numPairs)
++            break;
++          curBack = matches[offs + 1];
++          if (curBack >= kNumFullDistances)
++            GetPosSlot2(curBack, posSlot);
++        }
++      }
++    }
++  }
++}
++
++#define ChangePair(smallDist, bigDist) (((bigDist) >> 7) > (smallDist))
++
++static UInt32 GetOptimumFast(CLzmaEnc *p, UInt32 *backRes)
++{
++  UInt32 numAvail, mainLen, mainDist, numPairs, repIndex, repLen, i;
++  const Byte *data;
++  const UInt32 *matches;
++
++  if (p->additionalOffset == 0)
++    mainLen = ReadMatchDistances(p, &numPairs);
++  else
++  {
++    mainLen = p->longestMatchLength;
++    numPairs = p->numPairs;
++  }
++
++  numAvail = p->numAvail;
++  *backRes = (UInt32)-1;
++  if (numAvail < 2)
++    return 1;
++  if (numAvail > LZMA_MATCH_LEN_MAX)
++    numAvail = LZMA_MATCH_LEN_MAX;
++  data = p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - 1;
++
++  repLen = repIndex = 0;
++  for (i = 0; i < LZMA_NUM_REPS; i++)
++  {
++    UInt32 len;
++    const Byte *data2 = data - (p->reps[i] + 1);
++    if (data[0] != data2[0] || data[1] != data2[1])
++      continue;
++    for (len = 2; len < numAvail && data[len] == data2[len]; len++);
++    if (len >= p->numFastBytes)
++    {
++      *backRes = i;
++      MovePos(p, len - 1);
++      return len;
++    }
++    if (len > repLen)
++    {
++      repIndex = i;
++      repLen = len;
++    }
++  }
++
++  matches = p->matches;
++  if (mainLen >= p->numFastBytes)
++  {
++    *backRes = matches[numPairs - 1] + LZMA_NUM_REPS;
++    MovePos(p, mainLen - 1);
++    return mainLen;
++  }
++
++  mainDist = 0; /* for GCC */
++  if (mainLen >= 2)
++  {
++    mainDist = matches[numPairs - 1];
++    while (numPairs > 2 && mainLen == matches[numPairs - 4] + 1)
++    {
++      if (!ChangePair(matches[numPairs - 3], mainDist))
++        break;
++      numPairs -= 2;
++      mainLen = matches[numPairs - 2];
++      mainDist = matches[numPairs - 1];
++    }
++    if (mainLen == 2 && mainDist >= 0x80)
++      mainLen = 1;
++  }
++
++  if (repLen >= 2 && (
++        (repLen + 1 >= mainLen) ||
++        (repLen + 2 >= mainLen && mainDist >= (1 << 9)) ||
++        (repLen + 3 >= mainLen && mainDist >= (1 << 15))))
++  {
++    *backRes = repIndex;
++    MovePos(p, repLen - 1);
++    return repLen;
++  }
++  
++  if (mainLen < 2 || numAvail <= 2)
++    return 1;
++
++  p->longestMatchLength = ReadMatchDistances(p, &p->numPairs);
++  if (p->longestMatchLength >= 2)
++  {
++    UInt32 newDistance = matches[p->numPairs - 1];
++    if ((p->longestMatchLength >= mainLen && newDistance < mainDist) ||
++        (p->longestMatchLength == mainLen + 1 && !ChangePair(mainDist, newDistance)) ||
++        (p->longestMatchLength > mainLen + 1) ||
++        (p->longestMatchLength + 1 >= mainLen && mainLen >= 3 && ChangePair(newDistance, mainDist)))
++      return 1;
++  }
++  
++  data = p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - 1;
++  for (i = 0; i < LZMA_NUM_REPS; i++)
++  {
++    UInt32 len, limit;
++    const Byte *data2 = data - (p->reps[i] + 1);
++    if (data[0] != data2[0] || data[1] != data2[1])
++      continue;
++    limit = mainLen - 1;
++    for (len = 2; len < limit && data[len] == data2[len]; len++);
++    if (len >= limit)
++      return 1;
++  }
++  *backRes = mainDist + LZMA_NUM_REPS;
++  MovePos(p, mainLen - 2);
++  return mainLen;
++}
++
++static void WriteEndMarker(CLzmaEnc *p, UInt32 posState)
++{
++  UInt32 len;
++  RangeEnc_EncodeBit(&p->rc, &p->isMatch[p->state][posState], 1);
++  RangeEnc_EncodeBit(&p->rc, &p->isRep[p->state], 0);
++  p->state = kMatchNextStates[p->state];
++  len = LZMA_MATCH_LEN_MIN;
++  LenEnc_Encode2(&p->lenEnc, &p->rc, len - LZMA_MATCH_LEN_MIN, posState, !p->fastMode, p->ProbPrices);
++  RcTree_Encode(&p->rc, p->posSlotEncoder[GetLenToPosState(len)], kNumPosSlotBits, (1 << kNumPosSlotBits) - 1);
++  RangeEnc_EncodeDirectBits(&p->rc, (((UInt32)1 << 30) - 1) >> kNumAlignBits, 30 - kNumAlignBits);
++  RcTree_ReverseEncode(&p->rc, p->posAlignEncoder, kNumAlignBits, kAlignMask);
++}
++
++static SRes CheckErrors(CLzmaEnc *p)
++{
++  if (p->result != SZ_OK)
++    return p->result;
++  if (p->rc.res != SZ_OK)
++    p->result = SZ_ERROR_WRITE;
++  if (p->matchFinderBase.result != SZ_OK)
++    p->result = SZ_ERROR_READ;
++  if (p->result != SZ_OK)
++    p->finished = True;
++  return p->result;
++}
++
++static SRes Flush(CLzmaEnc *p, UInt32 nowPos)
++{
++  /* ReleaseMFStream(); */
++  p->finished = True;
++  if (p->writeEndMark)
++    WriteEndMarker(p, nowPos & p->pbMask);
++  RangeEnc_FlushData(&p->rc);
++  RangeEnc_FlushStream(&p->rc);
++  return CheckErrors(p);
++}
++
++static void FillAlignPrices(CLzmaEnc *p)
++{
++  UInt32 i;
++  for (i = 0; i < kAlignTableSize; i++)
++    p->alignPrices[i] = RcTree_ReverseGetPrice(p->posAlignEncoder, kNumAlignBits, i, p->ProbPrices);
++  p->alignPriceCount = 0;
++}
++
++static void FillDistancesPrices(CLzmaEnc *p)
++{
++  UInt32 tempPrices[kNumFullDistances];
++  UInt32 i, lenToPosState;
++  for (i = kStartPosModelIndex; i < kNumFullDistances; i++)
++  {
++    UInt32 posSlot = GetPosSlot1(i);
++    UInt32 footerBits = ((posSlot >> 1) - 1);
++    UInt32 base = ((2 | (posSlot & 1)) << footerBits);
++    tempPrices[i] = RcTree_ReverseGetPrice(p->posEncoders + base - posSlot - 1, footerBits, i - base, p->ProbPrices);
++  }
++
++  for (lenToPosState = 0; lenToPosState < kNumLenToPosStates; lenToPosState++)
++  {
++    UInt32 posSlot;
++    const CLzmaProb *encoder = p->posSlotEncoder[lenToPosState];
++    UInt32 *posSlotPrices = p->posSlotPrices[lenToPosState];
++    for (posSlot = 0; posSlot < p->distTableSize; posSlot++)
++      posSlotPrices[posSlot] = RcTree_GetPrice(encoder, kNumPosSlotBits, posSlot, p->ProbPrices);
++    for (posSlot = kEndPosModelIndex; posSlot < p->distTableSize; posSlot++)
++      posSlotPrices[posSlot] += ((((posSlot >> 1) - 1) - kNumAlignBits) << kNumBitPriceShiftBits);
++
++    {
++      UInt32 *distancesPrices = p->distancesPrices[lenToPosState];
++      UInt32 i;
++      for (i = 0; i < kStartPosModelIndex; i++)
++        distancesPrices[i] = posSlotPrices[i];
++      for (; i < kNumFullDistances; i++)
++        distancesPrices[i] = posSlotPrices[GetPosSlot1(i)] + tempPrices[i];
++    }
++  }
++  p->matchPriceCount = 0;
++}
++
++void LzmaEnc_Construct(CLzmaEnc *p)
++{
++  RangeEnc_Construct(&p->rc);
++  MatchFinder_Construct(&p->matchFinderBase);
++  #ifndef _7ZIP_ST
++  MatchFinderMt_Construct(&p->matchFinderMt);
++  p->matchFinderMt.MatchFinder = &p->matchFinderBase;
++  #endif
++
++  {
++    CLzmaEncProps props;
++    LzmaEncProps_Init(&props);
++    LzmaEnc_SetProps(p, &props);
++  }
++
++  #ifndef LZMA_LOG_BSR
++  LzmaEnc_FastPosInit(p->g_FastPos);
++  #endif
++
++  LzmaEnc_InitPriceTables(p->ProbPrices);
++  p->litProbs = 0;
++  p->saveState.litProbs = 0;
++}
++
++CLzmaEncHandle LzmaEnc_Create(ISzAlloc *alloc)
++{
++  void *p;
++  p = alloc->Alloc(alloc, sizeof(CLzmaEnc));
++  if (p != 0)
++    LzmaEnc_Construct((CLzmaEnc *)p);
++  return p;
++}
++
++void LzmaEnc_FreeLits(CLzmaEnc *p, ISzAlloc *alloc)
++{
++  alloc->Free(alloc, p->litProbs);
++  alloc->Free(alloc, p->saveState.litProbs);
++  p->litProbs = 0;
++  p->saveState.litProbs = 0;
++}
++
++void LzmaEnc_Destruct(CLzmaEnc *p, ISzAlloc *alloc, ISzAlloc *allocBig)
++{
++  #ifndef _7ZIP_ST
++  MatchFinderMt_Destruct(&p->matchFinderMt, allocBig);
++  #endif
++  MatchFinder_Free(&p->matchFinderBase, allocBig);
++  LzmaEnc_FreeLits(p, alloc);
++  RangeEnc_Free(&p->rc, alloc);
++}
++
++void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAlloc *alloc, ISzAlloc *allocBig)
++{
++  LzmaEnc_Destruct((CLzmaEnc *)p, alloc, allocBig);
++  alloc->Free(alloc, p);
++}
++
++static SRes LzmaEnc_CodeOneBlock(CLzmaEnc *p, Bool useLimits, UInt32 maxPackSize, UInt32 maxUnpackSize)
++{
++  UInt32 nowPos32, startPos32;
++  if (p->needInit)
++  {
++    p->matchFinder.Init(p->matchFinderObj);
++    p->needInit = 0;
++  }
++
++  if (p->finished)
++    return p->result;
++  RINOK(CheckErrors(p));
++
++  nowPos32 = (UInt32)p->nowPos64;
++  startPos32 = nowPos32;
++
++  if (p->nowPos64 == 0)
++  {
++    UInt32 numPairs;
++    Byte curByte;
++    if (p->matchFinder.GetNumAvailableBytes(p->matchFinderObj) == 0)
++      return Flush(p, nowPos32);
++    ReadMatchDistances(p, &numPairs);
++    RangeEnc_EncodeBit(&p->rc, &p->isMatch[p->state][0], 0);
++    p->state = kLiteralNextStates[p->state];
++    curByte = p->matchFinder.GetIndexByte(p->matchFinderObj, 0 - p->additionalOffset);
++    LitEnc_Encode(&p->rc, p->litProbs, curByte);
++    p->additionalOffset--;
++    nowPos32++;
++  }
++
++  if (p->matchFinder.GetNumAvailableBytes(p->matchFinderObj) != 0)
++  for (;;)
++  {
++    UInt32 pos, len, posState;
++
++    if (p->fastMode)
++      len = GetOptimumFast(p, &pos);
++    else
++      len = GetOptimum(p, nowPos32, &pos);
++
++    #ifdef SHOW_STAT2
++    printf("\n pos = %4X,   len = %d   pos = %d", nowPos32, len, pos);
++    #endif
++
++    posState = nowPos32 & p->pbMask;
++    if (len == 1 && pos == (UInt32)-1)
++    {
++      Byte curByte;
++      CLzmaProb *probs;
++      const Byte *data;
++
++      RangeEnc_EncodeBit(&p->rc, &p->isMatch[p->state][posState], 0);
++      data = p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - p->additionalOffset;
++      curByte = *data;
++      probs = LIT_PROBS(nowPos32, *(data - 1));
++      if (IsCharState(p->state))
++        LitEnc_Encode(&p->rc, probs, curByte);
++      else
++        LitEnc_EncodeMatched(&p->rc, probs, curByte, *(data - p->reps[0] - 1));
++      p->state = kLiteralNextStates[p->state];
++    }
++    else
++    {
++      RangeEnc_EncodeBit(&p->rc, &p->isMatch[p->state][posState], 1);
++      if (pos < LZMA_NUM_REPS)
++      {
++        RangeEnc_EncodeBit(&p->rc, &p->isRep[p->state], 1);
++        if (pos == 0)
++        {
++          RangeEnc_EncodeBit(&p->rc, &p->isRepG0[p->state], 0);
++          RangeEnc_EncodeBit(&p->rc, &p->isRep0Long[p->state][posState], ((len == 1) ? 0 : 1));
++        }
++        else
++        {
++          UInt32 distance = p->reps[pos];
++          RangeEnc_EncodeBit(&p->rc, &p->isRepG0[p->state], 1);
++          if (pos == 1)
++            RangeEnc_EncodeBit(&p->rc, &p->isRepG1[p->state], 0);
++          else
++          {
++            RangeEnc_EncodeBit(&p->rc, &p->isRepG1[p->state], 1);
++            RangeEnc_EncodeBit(&p->rc, &p->isRepG2[p->state], pos - 2);
++            if (pos == 3)
++              p->reps[3] = p->reps[2];
++            p->reps[2] = p->reps[1];
++          }
++          p->reps[1] = p->reps[0];
++          p->reps[0] = distance;
++        }
++        if (len == 1)
++          p->state = kShortRepNextStates[p->state];
++        else
++        {
++          LenEnc_Encode2(&p->repLenEnc, &p->rc, len - LZMA_MATCH_LEN_MIN, posState, !p->fastMode, p->ProbPrices);
++          p->state = kRepNextStates[p->state];
++        }
++      }
++      else
++      {
++        UInt32 posSlot;
++        RangeEnc_EncodeBit(&p->rc, &p->isRep[p->state], 0);
++        p->state = kMatchNextStates[p->state];
++        LenEnc_Encode2(&p->lenEnc, &p->rc, len - LZMA_MATCH_LEN_MIN, posState, !p->fastMode, p->ProbPrices);
++        pos -= LZMA_NUM_REPS;
++        GetPosSlot(pos, posSlot);
++        RcTree_Encode(&p->rc, p->posSlotEncoder[GetLenToPosState(len)], kNumPosSlotBits, posSlot);
++        
++        if (posSlot >= kStartPosModelIndex)
++        {
++          UInt32 footerBits = ((posSlot >> 1) - 1);
++          UInt32 base = ((2 | (posSlot & 1)) << footerBits);
++          UInt32 posReduced = pos - base;
++
++          if (posSlot < kEndPosModelIndex)
++            RcTree_ReverseEncode(&p->rc, p->posEncoders + base - posSlot - 1, footerBits, posReduced);
++          else
++          {
++            RangeEnc_EncodeDirectBits(&p->rc, posReduced >> kNumAlignBits, footerBits - kNumAlignBits);
++            RcTree_ReverseEncode(&p->rc, p->posAlignEncoder, kNumAlignBits, posReduced & kAlignMask);
++            p->alignPriceCount++;
++          }
++        }
++        p->reps[3] = p->reps[2];
++        p->reps[2] = p->reps[1];
++        p->reps[1] = p->reps[0];
++        p->reps[0] = pos;
++        p->matchPriceCount++;
++      }
++    }
++    p->additionalOffset -= len;
++    nowPos32 += len;
++    if (p->additionalOffset == 0)
++    {
++      UInt32 processed;
++      if (!p->fastMode)
++      {
++        if (p->matchPriceCount >= (1 << 7))
++          FillDistancesPrices(p);
++        if (p->alignPriceCount >= kAlignTableSize)
++          FillAlignPrices(p);
++      }
++      if (p->matchFinder.GetNumAvailableBytes(p->matchFinderObj) == 0)
++        break;
++      processed = nowPos32 - startPos32;
++      if (useLimits)
++      {
++        if (processed + kNumOpts + 300 >= maxUnpackSize ||
++            RangeEnc_GetProcessed(&p->rc) + kNumOpts * 2 >= maxPackSize)
++          break;
++      }
++      else if (processed >= (1 << 15))
++      {
++        p->nowPos64 += nowPos32 - startPos32;
++        return CheckErrors(p);
++      }
++    }
++  }
++  p->nowPos64 += nowPos32 - startPos32;
++  return Flush(p, nowPos32);
++}
++
++#define kBigHashDicLimit ((UInt32)1 << 24)
++
++static SRes LzmaEnc_Alloc(CLzmaEnc *p, UInt32 keepWindowSize, ISzAlloc *alloc, ISzAlloc *allocBig)
++{
++  UInt32 beforeSize = kNumOpts;
++  Bool btMode;
++  if (!RangeEnc_Alloc(&p->rc, alloc))
++    return SZ_ERROR_MEM;
++  btMode = (p->matchFinderBase.btMode != 0);
++  #ifndef _7ZIP_ST
++  p->mtMode = (p->multiThread && !p->fastMode && btMode);
++  #endif
++
++  {
++    unsigned lclp = p->lc + p->lp;
++    if (p->litProbs == 0 || p->saveState.litProbs == 0 || p->lclp != lclp)
++    {
++      LzmaEnc_FreeLits(p, alloc);
++      p->litProbs = (CLzmaProb *)alloc->Alloc(alloc, (0x300 << lclp) * sizeof(CLzmaProb));
++      p->saveState.litProbs = (CLzmaProb *)alloc->Alloc(alloc, (0x300 << lclp) * sizeof(CLzmaProb));
++      if (p->litProbs == 0 || p->saveState.litProbs == 0)
++      {
++        LzmaEnc_FreeLits(p, alloc);
++        return SZ_ERROR_MEM;
++      }
++      p->lclp = lclp;
++    }
++  }
++
++  p->matchFinderBase.bigHash = (p->dictSize > kBigHashDicLimit);
++
++  if (beforeSize + p->dictSize < keepWindowSize)
++    beforeSize = keepWindowSize - p->dictSize;
++
++  #ifndef _7ZIP_ST
++  if (p->mtMode)
++  {
++    RINOK(MatchFinderMt_Create(&p->matchFinderMt, p->dictSize, beforeSize, p->numFastBytes, LZMA_MATCH_LEN_MAX, allocBig));
++    p->matchFinderObj = &p->matchFinderMt;
++    MatchFinderMt_CreateVTable(&p->matchFinderMt, &p->matchFinder);
++  }
++  else
++  #endif
++  {
++    if (!MatchFinder_Create(&p->matchFinderBase, p->dictSize, beforeSize, p->numFastBytes, LZMA_MATCH_LEN_MAX, allocBig))
++      return SZ_ERROR_MEM;
++    p->matchFinderObj = &p->matchFinderBase;
++    MatchFinder_CreateVTable(&p->matchFinderBase, &p->matchFinder);
++  }
++  return SZ_OK;
++}
++
++void LzmaEnc_Init(CLzmaEnc *p)
++{
++  UInt32 i;
++  p->state = 0;
++  for (i = 0 ; i < LZMA_NUM_REPS; i++)
++    p->reps[i] = 0;
++
++  RangeEnc_Init(&p->rc);
++
++
++  for (i = 0; i < kNumStates; i++)
++  {
++    UInt32 j;
++    for (j = 0; j < LZMA_NUM_PB_STATES_MAX; j++)
++    {
++      p->isMatch[i][j] = kProbInitValue;
++      p->isRep0Long[i][j] = kProbInitValue;
++    }
++    p->isRep[i] = kProbInitValue;
++    p->isRepG0[i] = kProbInitValue;
++    p->isRepG1[i] = kProbInitValue;
++    p->isRepG2[i] = kProbInitValue;
++  }
++
++  {
++    UInt32 num = 0x300 << (p->lp + p->lc);
++    for (i = 0; i < num; i++)
++      p->litProbs[i] = kProbInitValue;
++  }
++
++  {
++    for (i = 0; i < kNumLenToPosStates; i++)
++    {
++      CLzmaProb *probs = p->posSlotEncoder[i];
++      UInt32 j;
++      for (j = 0; j < (1 << kNumPosSlotBits); j++)
++        probs[j] = kProbInitValue;
++    }
++  }
++  {
++    for (i = 0; i < kNumFullDistances - kEndPosModelIndex; i++)
++      p->posEncoders[i] = kProbInitValue;
++  }
++
++  LenEnc_Init(&p->lenEnc.p);
++  LenEnc_Init(&p->repLenEnc.p);
++
++  for (i = 0; i < (1 << kNumAlignBits); i++)
++    p->posAlignEncoder[i] = kProbInitValue;
++
++  p->optimumEndIndex = 0;
++  p->optimumCurrentIndex = 0;
++  p->additionalOffset = 0;
++
++  p->pbMask = (1 << p->pb) - 1;
++  p->lpMask = (1 << p->lp) - 1;
++}
++
++void LzmaEnc_InitPrices(CLzmaEnc *p)
++{
++  if (!p->fastMode)
++  {
++    FillDistancesPrices(p);
++    FillAlignPrices(p);
++  }
++
++  p->lenEnc.tableSize =
++  p->repLenEnc.tableSize =
++      p->numFastBytes + 1 - LZMA_MATCH_LEN_MIN;
++  LenPriceEnc_UpdateTables(&p->lenEnc, 1 << p->pb, p->ProbPrices);
++  LenPriceEnc_UpdateTables(&p->repLenEnc, 1 << p->pb, p->ProbPrices);
++}
++
++static SRes LzmaEnc_AllocAndInit(CLzmaEnc *p, UInt32 keepWindowSize, ISzAlloc *alloc, ISzAlloc *allocBig)
++{
++  UInt32 i;
++  for (i = 0; i < (UInt32)kDicLogSizeMaxCompress; i++)
++    if (p->dictSize <= ((UInt32)1 << i))
++      break;
++  p->distTableSize = i * 2;
++
++  p->finished = False;
++  p->result = SZ_OK;
++  RINOK(LzmaEnc_Alloc(p, keepWindowSize, alloc, allocBig));
++  LzmaEnc_Init(p);
++  LzmaEnc_InitPrices(p);
++  p->nowPos64 = 0;
++  return SZ_OK;
++}
++
++static SRes LzmaEnc_Prepare(CLzmaEncHandle pp, ISeqOutStream *outStream, ISeqInStream *inStream,
++    ISzAlloc *alloc, ISzAlloc *allocBig)
++{
++  CLzmaEnc *p = (CLzmaEnc *)pp;
++  p->matchFinderBase.stream = inStream;
++  p->needInit = 1;
++  p->rc.outStream = outStream;
++  return LzmaEnc_AllocAndInit(p, 0, alloc, allocBig);
++}
++
++SRes LzmaEnc_PrepareForLzma2(CLzmaEncHandle pp,
++    ISeqInStream *inStream, UInt32 keepWindowSize,
++    ISzAlloc *alloc, ISzAlloc *allocBig)
++{
++  CLzmaEnc *p = (CLzmaEnc *)pp;
++  p->matchFinderBase.stream = inStream;
++  p->needInit = 1;
++  return LzmaEnc_AllocAndInit(p, keepWindowSize, alloc, allocBig);
++}
++
++static void LzmaEnc_SetInputBuf(CLzmaEnc *p, const Byte *src, SizeT srcLen)
++{
++  p->matchFinderBase.directInput = 1;
++  p->matchFinderBase.bufferBase = (Byte *)src;
++  p->matchFinderBase.directInputRem = srcLen;
++}
++
++SRes LzmaEnc_MemPrepare(CLzmaEncHandle pp, const Byte *src, SizeT srcLen,
++    UInt32 keepWindowSize, ISzAlloc *alloc, ISzAlloc *allocBig)
++{
++  CLzmaEnc *p = (CLzmaEnc *)pp;
++  LzmaEnc_SetInputBuf(p, src, srcLen);
++  p->needInit = 1;
++
++  return LzmaEnc_AllocAndInit(p, keepWindowSize, alloc, allocBig);
++}
++
++void LzmaEnc_Finish(CLzmaEncHandle pp)
++{
++  #ifndef _7ZIP_ST
++  CLzmaEnc *p = (CLzmaEnc *)pp;
++  if (p->mtMode)
++    MatchFinderMt_ReleaseStream(&p->matchFinderMt);
++  #else
++  pp = pp;
++  #endif
++}
++
++typedef struct
++{
++  ISeqOutStream funcTable;
++  Byte *data;
++  SizeT rem;
++  Bool overflow;
++} CSeqOutStreamBuf;
++
++static size_t MyWrite(void *pp, const void *data, size_t size)
++{
++  CSeqOutStreamBuf *p = (CSeqOutStreamBuf *)pp;
++  if (p->rem < size)
++  {
++    size = p->rem;
++    p->overflow = True;
++  }
++  memcpy(p->data, data, size);
++  p->rem -= size;
++  p->data += size;
++  return size;
++}
++
++
++UInt32 LzmaEnc_GetNumAvailableBytes(CLzmaEncHandle pp)
++{
++  const CLzmaEnc *p = (CLzmaEnc *)pp;
++  return p->matchFinder.GetNumAvailableBytes(p->matchFinderObj);
++}
++
++const Byte *LzmaEnc_GetCurBuf(CLzmaEncHandle pp)
++{
++  const CLzmaEnc *p = (CLzmaEnc *)pp;
++  return p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - p->additionalOffset;
++}
++
++SRes LzmaEnc_CodeOneMemBlock(CLzmaEncHandle pp, Bool reInit,
++    Byte *dest, size_t *destLen, UInt32 desiredPackSize, UInt32 *unpackSize)
++{
++  CLzmaEnc *p = (CLzmaEnc *)pp;
++  UInt64 nowPos64;
++  SRes res;
++  CSeqOutStreamBuf outStream;
++
++  outStream.funcTable.Write = MyWrite;
++  outStream.data = dest;
++  outStream.rem = *destLen;
++  outStream.overflow = False;
++
++  p->writeEndMark = False;
++  p->finished = False;
++  p->result = SZ_OK;
++
++  if (reInit)
++    LzmaEnc_Init(p);
++  LzmaEnc_InitPrices(p);
++  nowPos64 = p->nowPos64;
++  RangeEnc_Init(&p->rc);
++  p->rc.outStream = &outStream.funcTable;
++
++  res = LzmaEnc_CodeOneBlock(p, True, desiredPackSize, *unpackSize);
++  
++  *unpackSize = (UInt32)(p->nowPos64 - nowPos64);
++  *destLen -= outStream.rem;
++  if (outStream.overflow)
++    return SZ_ERROR_OUTPUT_EOF;
++
++  return res;
++}
++
++static SRes LzmaEnc_Encode2(CLzmaEnc *p, ICompressProgress *progress)
++{
++  SRes res = SZ_OK;
++
++  #ifndef _7ZIP_ST
++  Byte allocaDummy[0x300];
++  int i = 0;
++  for (i = 0; i < 16; i++)
++    allocaDummy[i] = (Byte)i;
++  #endif
++
++  for (;;)
++  {
++    res = LzmaEnc_CodeOneBlock(p, False, 0, 0);
++    if (res != SZ_OK || p->finished != 0)
++      break;
++    if (progress != 0)
++    {
++      res = progress->Progress(progress, p->nowPos64, RangeEnc_GetProcessed(&p->rc));
++      if (res != SZ_OK)
++      {
++        res = SZ_ERROR_PROGRESS;
++        break;
++      }
++    }
++  }
++  LzmaEnc_Finish(p);
++  return res;
++}
++
++SRes LzmaEnc_Encode(CLzmaEncHandle pp, ISeqOutStream *outStream, ISeqInStream *inStream, ICompressProgress *progress,
++    ISzAlloc *alloc, ISzAlloc *allocBig)
++{
++  RINOK(LzmaEnc_Prepare(pp, outStream, inStream, alloc, allocBig));
++  return LzmaEnc_Encode2((CLzmaEnc *)pp, progress);
++}
++
++SRes LzmaEnc_WriteProperties(CLzmaEncHandle pp, Byte *props, SizeT *size)
++{
++  CLzmaEnc *p = (CLzmaEnc *)pp;
++  int i;
++  UInt32 dictSize = p->dictSize;
++  if (*size < LZMA_PROPS_SIZE)
++    return SZ_ERROR_PARAM;
++  *size = LZMA_PROPS_SIZE;
++  props[0] = (Byte)((p->pb * 5 + p->lp) * 9 + p->lc);
++
++  for (i = 11; i <= 30; i++)
++  {
++    if (dictSize <= ((UInt32)2 << i))
++    {
++      dictSize = (2 << i);
++      break;
++    }
++    if (dictSize <= ((UInt32)3 << i))
++    {
++      dictSize = (3 << i);
++      break;
++    }
++  }
++
++  for (i = 0; i < 4; i++)
++    props[1 + i] = (Byte)(dictSize >> (8 * i));
++  return SZ_OK;
++}
++
++SRes LzmaEnc_MemEncode(CLzmaEncHandle pp, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
++    int writeEndMark, ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig)
++{
++  SRes res;
++  CLzmaEnc *p = (CLzmaEnc *)pp;
++
++  CSeqOutStreamBuf outStream;
++
++  LzmaEnc_SetInputBuf(p, src, srcLen);
++
++  outStream.funcTable.Write = MyWrite;
++  outStream.data = dest;
++  outStream.rem = *destLen;
++  outStream.overflow = False;
++
++  p->writeEndMark = writeEndMark;
++
++  p->rc.outStream = &outStream.funcTable;
++  res = LzmaEnc_MemPrepare(pp, src, srcLen, 0, alloc, allocBig);
++  if (res == SZ_OK)
++    res = LzmaEnc_Encode2(p, progress);
++
++  *destLen -= outStream.rem;
++  if (outStream.overflow)
++    return SZ_ERROR_OUTPUT_EOF;
++  return res;
++}
++
++SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
++    const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark,
++    ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig)
++{
++  CLzmaEnc *p = (CLzmaEnc *)LzmaEnc_Create(alloc);
++  SRes res;
++  if (p == 0)
++    return SZ_ERROR_MEM;
++
++  res = LzmaEnc_SetProps(p, props);
++  if (res == SZ_OK)
++  {
++    res = LzmaEnc_WriteProperties(p, propsEncoded, propsSize);
++    if (res == SZ_OK)
++      res = LzmaEnc_MemEncode(p, dest, destLen, src, srcLen,
++          writeEndMark, progress, alloc, allocBig);
++  }
++
++  LzmaEnc_Destroy(p, alloc, allocBig);
++  return res;
++}
+--- /dev/null
++++ b/lib/lzma/Makefile
+@@ -0,0 +1,7 @@
++lzma_compress-objs := LzFind.o LzmaEnc.o
++lzma_decompress-objs := LzmaDec.o
++
++obj-$(CONFIG_LZMA_COMPRESS) += lzma_compress.o
++obj-$(CONFIG_LZMA_DECOMPRESS) += lzma_decompress.o
++
++EXTRA_CFLAGS += -Iinclude/linux -Iinclude/linux/lzma -include types.h

diff --git a/target/linux/generic/patches-3.0/511-debloat_lzma.patch b/target/linux/generic/patches-3.0/511-debloat_lzma.patch
new file mode 100644 (file)
index 0000000..1e41661
--- /dev/null
+++ b/target/linux/generic/patches-3.0/511-debloat_lzma.patch
@@ -0,0 +1,485 @@
+--- a/include/linux/lzma/LzmaDec.h
++++ b/include/linux/lzma/LzmaDec.h
+@@ -31,14 +31,6 @@ typedef struct _CLzmaProps
+   UInt32 dicSize;
+ } CLzmaProps;
+ 
+-/* LzmaProps_Decode - decodes properties
+-Returns:
+-  SZ_OK
+-  SZ_ERROR_UNSUPPORTED - Unsupported properties
+-*/
+-
+-SRes LzmaProps_Decode(CLzmaProps *p, const Byte *data, unsigned size);
+-
+ 
+ /* ---------- LZMA Decoder state ---------- */
+ 
+@@ -70,8 +62,6 @@ typedef struct
+ 
+ #define LzmaDec_Construct(p) { (p)->dic = 0; (p)->probs = 0; }
+ 
+-void LzmaDec_Init(CLzmaDec *p);
+-
+ /* There are two types of LZMA streams:
+      0) Stream with end mark. That end mark adds about 6 bytes to compressed size.
+      1) Stream without end mark. You must know exact uncompressed size to decompress such stream. */
+@@ -108,97 +98,6 @@ typedef enum
+ 
+ /* ELzmaStatus is used only as output value for function call */
+ 
+-
+-/* ---------- Interfaces ---------- */
+-
+-/* There are 3 levels of interfaces:
+-     1) Dictionary Interface
+-     2) Buffer Interface
+-     3) One Call Interface
+-   You can select any of these interfaces, but don't mix functions from different
+-   groups for same object. */
+-
+-
+-/* There are two variants to allocate state for Dictionary Interface:
+-     1) LzmaDec_Allocate / LzmaDec_Free
+-     2) LzmaDec_AllocateProbs / LzmaDec_FreeProbs
+-   You can use variant 2, if you set dictionary buffer manually.
+-   For Buffer Interface you must always use variant 1.
+-
+-LzmaDec_Allocate* can return:
+-  SZ_OK
+-  SZ_ERROR_MEM         - Memory allocation error
+-  SZ_ERROR_UNSUPPORTED - Unsupported properties
+-*/
+-   
+-SRes LzmaDec_AllocateProbs(CLzmaDec *p, const Byte *props, unsigned propsSize, ISzAlloc *alloc);
+-void LzmaDec_FreeProbs(CLzmaDec *p, ISzAlloc *alloc);
+-
+-SRes LzmaDec_Allocate(CLzmaDec *state, const Byte *prop, unsigned propsSize, ISzAlloc *alloc);
+-void LzmaDec_Free(CLzmaDec *state, ISzAlloc *alloc);
+-
+-/* ---------- Dictionary Interface ---------- */
+-
+-/* You can use it, if you want to eliminate the overhead for data copying from
+-   dictionary to some other external buffer.
+-   You must work with CLzmaDec variables directly in this interface.
+-
+-   STEPS:
+-     LzmaDec_Constr()
+-     LzmaDec_Allocate()
+-     for (each new stream)
+-     {
+-       LzmaDec_Init()
+-       while (it needs more decompression)
+-       {
+-         LzmaDec_DecodeToDic()
+-         use data from CLzmaDec::dic and update CLzmaDec::dicPos
+-       }
+-     }
+-     LzmaDec_Free()
+-*/
+-
+-/* LzmaDec_DecodeToDic
+-   
+-   The decoding to internal dictionary buffer (CLzmaDec::dic).
+-   You must manually update CLzmaDec::dicPos, if it reaches CLzmaDec::dicBufSize !!!
+-
+-finishMode:
+-  It has meaning only if the decoding reaches output limit (dicLimit).
+-  LZMA_FINISH_ANY - Decode just dicLimit bytes.
+-  LZMA_FINISH_END - Stream must be finished after dicLimit.
+-
+-Returns:
+-  SZ_OK
+-    status:
+-      LZMA_STATUS_FINISHED_WITH_MARK
+-      LZMA_STATUS_NOT_FINISHED
+-      LZMA_STATUS_NEEDS_MORE_INPUT
+-      LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK
+-  SZ_ERROR_DATA - Data error
+-*/
+-
+-SRes LzmaDec_DecodeToDic(CLzmaDec *p, SizeT dicLimit,
+-    const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status);
+-
+-
+-/* ---------- Buffer Interface ---------- */
+-
+-/* It's zlib-like interface.
+-   See LzmaDec_DecodeToDic description for information about STEPS and return results,
+-   but you must use LzmaDec_DecodeToBuf instead of LzmaDec_DecodeToDic and you don't need
+-   to work with CLzmaDec variables manually.
+-
+-finishMode:
+-  It has meaning only if the decoding reaches output limit (*destLen).
+-  LZMA_FINISH_ANY - Decode just destLen bytes.
+-  LZMA_FINISH_END - Stream must be finished after (*destLen).
+-*/
+-
+-SRes LzmaDec_DecodeToBuf(CLzmaDec *p, Byte *dest, SizeT *destLen,
+-    const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status);
+-
+-
+ /* ---------- One Call Interface ---------- */
+ 
+ /* LzmaDecode
+--- a/lib/lzma/LzmaDec.c
++++ b/lib/lzma/LzmaDec.c
+@@ -682,7 +682,7 @@ static void LzmaDec_InitRc(CLzmaDec *p,
+   p->needFlush = 0;
+ }
+ 
+-void LzmaDec_InitDicAndState(CLzmaDec *p, Bool initDic, Bool initState)
++static void LzmaDec_InitDicAndState(CLzmaDec *p, Bool initDic, Bool initState)
+ {
+   p->needFlush = 1;
+   p->remainLen = 0;
+@@ -698,7 +698,7 @@ void LzmaDec_InitDicAndState(CLzmaDec *p
+     p->needInitState = 1;
+ }
+ 
+-void LzmaDec_Init(CLzmaDec *p)
++static void LzmaDec_Init(CLzmaDec *p)
+ {
+   p->dicPos = 0;
+   LzmaDec_InitDicAndState(p, True, True);
+@@ -716,7 +716,7 @@ static void LzmaDec_InitStateReal(CLzmaD
+   p->needInitState = 0;
+ }
+ 
+-SRes LzmaDec_DecodeToDic(CLzmaDec *p, SizeT dicLimit, const Byte *src, SizeT *srcLen,
++static SRes LzmaDec_DecodeToDic(CLzmaDec *p, SizeT dicLimit, const Byte *src, SizeT *srcLen,
+     ELzmaFinishMode finishMode, ELzmaStatus *status)
+ {
+   SizeT inSize = *srcLen;
+@@ -837,7 +837,7 @@ SRes LzmaDec_DecodeToDic(CLzmaDec *p, Si
+   return (p->code == 0) ? SZ_OK : SZ_ERROR_DATA;
+ }
+ 
+-SRes LzmaDec_DecodeToBuf(CLzmaDec *p, Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status)
++static __maybe_unused SRes LzmaDec_DecodeToBuf(CLzmaDec *p, Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status)
+ {
+   SizeT outSize = *destLen;
+   SizeT inSize = *srcLen;
+@@ -877,7 +877,7 @@ SRes LzmaDec_DecodeToBuf(CLzmaDec *p, By
+   }
+ }
+ 
+-void LzmaDec_FreeProbs(CLzmaDec *p, ISzAlloc *alloc)
++static void LzmaDec_FreeProbs(CLzmaDec *p, ISzAlloc *alloc)
+ {
+   alloc->Free(alloc, p->probs);
+   p->probs = 0;
+@@ -889,13 +889,13 @@ static void LzmaDec_FreeDict(CLzmaDec *p
+   p->dic = 0;
+ }
+ 
+-void LzmaDec_Free(CLzmaDec *p, ISzAlloc *alloc)
++static void __maybe_unused LzmaDec_Free(CLzmaDec *p, ISzAlloc *alloc)
+ {
+   LzmaDec_FreeProbs(p, alloc);
+   LzmaDec_FreeDict(p, alloc);
+ }
+ 
+-SRes LzmaProps_Decode(CLzmaProps *p, const Byte *data, unsigned size)
++static SRes LzmaProps_Decode(CLzmaProps *p, const Byte *data, unsigned size)
+ {
+   UInt32 dicSize;
+   Byte d;
+@@ -935,7 +935,7 @@ static SRes LzmaDec_AllocateProbs2(CLzma
+   return SZ_OK;
+ }
+ 
+-SRes LzmaDec_AllocateProbs(CLzmaDec *p, const Byte *props, unsigned propsSize, ISzAlloc *alloc)
++static SRes __maybe_unused LzmaDec_AllocateProbs(CLzmaDec *p, const Byte *props, unsigned propsSize, ISzAlloc *alloc)
+ {
+   CLzmaProps propNew;
+   RINOK(LzmaProps_Decode(&propNew, props, propsSize));
+@@ -944,7 +944,7 @@ SRes LzmaDec_AllocateProbs(CLzmaDec *p,
+   return SZ_OK;
+ }
+ 
+-SRes LzmaDec_Allocate(CLzmaDec *p, const Byte *props, unsigned propsSize, ISzAlloc *alloc)
++static SRes __maybe_unused LzmaDec_Allocate(CLzmaDec *p, const Byte *props, unsigned propsSize, ISzAlloc *alloc)
+ {
+   CLzmaProps propNew;
+   SizeT dicBufSize;
+--- a/include/linux/lzma/LzmaEnc.h
++++ b/include/linux/lzma/LzmaEnc.h
+@@ -31,9 +31,6 @@ typedef struct _CLzmaEncProps
+ } CLzmaEncProps;
+ 
+ void LzmaEncProps_Init(CLzmaEncProps *p);
+-void LzmaEncProps_Normalize(CLzmaEncProps *p);
+-UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2);
+-
+ 
+ /* ---------- CLzmaEncHandle Interface ---------- */
+ 
+@@ -53,26 +50,9 @@ CLzmaEncHandle LzmaEnc_Create(ISzAlloc *
+ void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAlloc *alloc, ISzAlloc *allocBig);
+ SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props);
+ SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size);
+-SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *inStream,
+-    ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);
+ SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
+     int writeEndMark, ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);
+ 
+-/* ---------- One Call Interface ---------- */
+-
+-/* LzmaEncode
+-Return code:
+-  SZ_OK               - OK
+-  SZ_ERROR_MEM        - Memory allocation error
+-  SZ_ERROR_PARAM      - Incorrect paramater
+-  SZ_ERROR_OUTPUT_EOF - output buffer overflow
+-  SZ_ERROR_THREAD     - errors in multithreading functions (only for Mt version)
+-*/
+-
+-SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
+-    const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark,
+-    ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);
+-
+ #ifdef __cplusplus
+ }
+ #endif
+--- a/lib/lzma/LzmaEnc.c
++++ b/lib/lzma/LzmaEnc.c
+@@ -53,7 +53,7 @@ void LzmaEncProps_Init(CLzmaEncProps *p)
+   p->writeEndMark = 0;
+ }
+ 
+-void LzmaEncProps_Normalize(CLzmaEncProps *p)
++static void LzmaEncProps_Normalize(CLzmaEncProps *p)
+ {
+   int level = p->level;
+   if (level < 0) level = 5;
+@@ -76,7 +76,7 @@ void LzmaEncProps_Normalize(CLzmaEncProp
+       #endif
+ }
+ 
+-UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2)
++static UInt32 __maybe_unused LzmaEncProps_GetDictSize(const CLzmaEncProps *props2)
+ {
+   CLzmaEncProps props = *props2;
+   LzmaEncProps_Normalize(&props);
+@@ -93,7 +93,7 @@ UInt32 LzmaEncProps_GetDictSize(const CL
+ 
+ #define BSR2_RET(pos, res) { unsigned long i; _BitScanReverse(&i, (pos)); res = (i + i) + ((pos >> (i - 1)) & 1); }
+ 
+-UInt32 GetPosSlot1(UInt32 pos)
++static UInt32 GetPosSlot1(UInt32 pos)
+ {
+   UInt32 res;
+   BSR2_RET(pos, res);
+@@ -107,7 +107,7 @@ UInt32 GetPosSlot1(UInt32 pos)
+ #define kNumLogBits (9 + (int)sizeof(size_t) / 2)
+ #define kDicLogSizeMaxCompress ((kNumLogBits - 1) * 2 + 7)
+ 
+-void LzmaEnc_FastPosInit(Byte *g_FastPos)
++static void LzmaEnc_FastPosInit(Byte *g_FastPos)
+ {
+   int c = 2, slotFast;
+   g_FastPos[0] = 0;
+@@ -339,7 +339,7 @@ typedef struct
+   CSaveState saveState;
+ } CLzmaEnc;
+ 
+-void LzmaEnc_SaveState(CLzmaEncHandle pp)
++static void __maybe_unused LzmaEnc_SaveState(CLzmaEncHandle pp)
+ {
+   CLzmaEnc *p = (CLzmaEnc *)pp;
+   CSaveState *dest = &p->saveState;
+@@ -365,7 +365,7 @@ void LzmaEnc_SaveState(CLzmaEncHandle pp
+   memcpy(dest->litProbs, p->litProbs, (0x300 << p->lclp) * sizeof(CLzmaProb));
+ }
+ 
+-void LzmaEnc_RestoreState(CLzmaEncHandle pp)
++static void __maybe_unused LzmaEnc_RestoreState(CLzmaEncHandle pp)
+ {
+   CLzmaEnc *dest = (CLzmaEnc *)pp;
+   const CSaveState *p = &dest->saveState;
+@@ -600,7 +600,7 @@ static void LitEnc_EncodeMatched(CRangeE
+   while (symbol < 0x10000);
+ }
+ 
+-void LzmaEnc_InitPriceTables(UInt32 *ProbPrices)
++static void LzmaEnc_InitPriceTables(UInt32 *ProbPrices)
+ {
+   UInt32 i;
+   for (i = (1 << kNumMoveReducingBits) / 2; i < kBitModelTotal; i += (1 << kNumMoveReducingBits))
+@@ -1676,7 +1676,7 @@ static void FillDistancesPrices(CLzmaEnc
+   p->matchPriceCount = 0;
+ }
+ 
+-void LzmaEnc_Construct(CLzmaEnc *p)
++static void LzmaEnc_Construct(CLzmaEnc *p)
+ {
+   RangeEnc_Construct(&p->rc);
+   MatchFinder_Construct(&p->matchFinderBase);
+@@ -1709,7 +1709,7 @@ CLzmaEncHandle LzmaEnc_Create(ISzAlloc *
+   return p;
+ }
+ 
+-void LzmaEnc_FreeLits(CLzmaEnc *p, ISzAlloc *alloc)
++static void LzmaEnc_FreeLits(CLzmaEnc *p, ISzAlloc *alloc)
+ {
+   alloc->Free(alloc, p->litProbs);
+   alloc->Free(alloc, p->saveState.litProbs);
+@@ -2074,7 +2074,7 @@ SRes LzmaEnc_MemPrepare(CLzmaEncHandle p
+   return LzmaEnc_AllocAndInit(p, keepWindowSize, alloc, allocBig);
+ }
+ 
+-void LzmaEnc_Finish(CLzmaEncHandle pp)
++static void LzmaEnc_Finish(CLzmaEncHandle pp)
+ {
+   #ifndef _7ZIP_ST
+   CLzmaEnc *p = (CLzmaEnc *)pp;
+@@ -2108,7 +2108,7 @@ static size_t MyWrite(void *pp, const vo
+ }
+ 
+ 
+-UInt32 LzmaEnc_GetNumAvailableBytes(CLzmaEncHandle pp)
++static UInt32 __maybe_unused LzmaEnc_GetNumAvailableBytes(CLzmaEncHandle pp)
+ {
+   const CLzmaEnc *p = (CLzmaEnc *)pp;
+   return p->matchFinder.GetNumAvailableBytes(p->matchFinderObj);
+@@ -2120,7 +2120,7 @@ const Byte *LzmaEnc_GetCurBuf(CLzmaEncHa
+   return p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - p->additionalOffset;
+ }
+ 
+-SRes LzmaEnc_CodeOneMemBlock(CLzmaEncHandle pp, Bool reInit,
++static SRes __maybe_unused LzmaEnc_CodeOneMemBlock(CLzmaEncHandle pp, Bool reInit,
+     Byte *dest, size_t *destLen, UInt32 desiredPackSize, UInt32 *unpackSize)
+ {
+   CLzmaEnc *p = (CLzmaEnc *)pp;
+@@ -2248,7 +2248,7 @@ SRes LzmaEnc_MemEncode(CLzmaEncHandle pp
+   return res;
+ }
+ 
+-SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
++static __maybe_unused SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
+     const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark,
+     ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig)
+ {
+--- a/include/linux/lzma/LzFind.h
++++ b/include/linux/lzma/LzFind.h
+@@ -55,11 +55,6 @@ typedef struct _CMatchFinder
+ 
+ #define Inline_MatchFinder_GetNumAvailableBytes(p) ((p)->streamPos - (p)->pos)
+ 
+-int MatchFinder_NeedMove(CMatchFinder *p);
+-Byte *MatchFinder_GetPointerToCurrentPos(CMatchFinder *p);
+-void MatchFinder_MoveBlock(CMatchFinder *p);
+-void MatchFinder_ReadIfRequired(CMatchFinder *p);
+-
+ void MatchFinder_Construct(CMatchFinder *p);
+ 
+ /* Conditions:
+@@ -70,12 +65,6 @@ int MatchFinder_Create(CMatchFinder *p,
+     UInt32 keepAddBufferBefore, UInt32 matchMaxLen, UInt32 keepAddBufferAfter,
+     ISzAlloc *alloc);
+ void MatchFinder_Free(CMatchFinder *p, ISzAlloc *alloc);
+-void MatchFinder_Normalize3(UInt32 subValue, CLzRef *items, UInt32 numItems);
+-void MatchFinder_ReduceOffsets(CMatchFinder *p, UInt32 subValue);
+-
+-UInt32 * GetMatchesSpec1(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const Byte *buffer, CLzRef *son,
+-    UInt32 _cyclicBufferPos, UInt32 _cyclicBufferSize, UInt32 _cutValue,
+-    UInt32 *distances, UInt32 maxLen);
+ 
+ /*
+ Conditions:
+@@ -102,12 +91,6 @@ typedef struct _IMatchFinder
+ 
+ void MatchFinder_CreateVTable(CMatchFinder *p, IMatchFinder *vTable);
+ 
+-void MatchFinder_Init(CMatchFinder *p);
+-UInt32 Bt3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances);
+-UInt32 Hc3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances);
+-void Bt3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num);
+-void Hc3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num);
+-
+ #ifdef __cplusplus
+ }
+ #endif
+--- a/lib/lzma/LzFind.c
++++ b/lib/lzma/LzFind.c
+@@ -42,12 +42,12 @@ static int LzInWindow_Create(CMatchFinde
+   return (p->bufferBase != 0);
+ }
+ 
+-Byte *MatchFinder_GetPointerToCurrentPos(CMatchFinder *p) { return p->buffer; }
+-Byte MatchFinder_GetIndexByte(CMatchFinder *p, Int32 index) { return p->buffer[index]; }
++static Byte *MatchFinder_GetPointerToCurrentPos(CMatchFinder *p) { return p->buffer; }
++static Byte MatchFinder_GetIndexByte(CMatchFinder *p, Int32 index) { return p->buffer[index]; }
+ 
+-UInt32 MatchFinder_GetNumAvailableBytes(CMatchFinder *p) { return p->streamPos - p->pos; }
++static UInt32 MatchFinder_GetNumAvailableBytes(CMatchFinder *p) { return p->streamPos - p->pos; }
+ 
+-void MatchFinder_ReduceOffsets(CMatchFinder *p, UInt32 subValue)
++static void MatchFinder_ReduceOffsets(CMatchFinder *p, UInt32 subValue)
+ {
+   p->posLimit -= subValue;
+   p->pos -= subValue;
+@@ -268,7 +268,7 @@ static void MatchFinder_SetLimits(CMatch
+   p->posLimit = p->pos + limit;
+ }
+ 
+-void MatchFinder_Init(CMatchFinder *p)
++static void MatchFinder_Init(CMatchFinder *p)
+ {
+   UInt32 i;
+   for (i = 0; i < p->hashSizeSum; i++)
+@@ -287,7 +287,7 @@ static UInt32 MatchFinder_GetSubValue(CM
+   return (p->pos - p->historySize - 1) & kNormalizeMask;
+ }
+ 
+-void MatchFinder_Normalize3(UInt32 subValue, CLzRef *items, UInt32 numItems)
++static void MatchFinder_Normalize3(UInt32 subValue, CLzRef *items, UInt32 numItems)
+ {
+   UInt32 i;
+   for (i = 0; i < numItems; i++)
+@@ -350,7 +350,7 @@ static UInt32 * Hc_GetMatchesSpec(UInt32
+   }
+ }
+ 
+-UInt32 * GetMatchesSpec1(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const Byte *cur, CLzRef *son,
++static UInt32 * GetMatchesSpec1(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const Byte *cur, CLzRef *son,
+     UInt32 _cyclicBufferPos, UInt32 _cyclicBufferSize, UInt32 cutValue,
+     UInt32 *distances, UInt32 maxLen)
+ {
+@@ -492,7 +492,7 @@ static UInt32 Bt2_MatchFinder_GetMatches
+   GET_MATCHES_FOOTER(offset, 1)
+ }
+ 
+-UInt32 Bt3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances)
++static __maybe_unused UInt32 Bt3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances)
+ {
+   UInt32 offset;
+   GET_MATCHES_HEADER(3)
+@@ -632,7 +632,7 @@ static UInt32 Hc4_MatchFinder_GetMatches
+   MOVE_POS_RET
+ }
+ 
+-UInt32 Hc3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances)
++static __maybe_unused UInt32 Hc3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances)
+ {
+   UInt32 offset;
+   GET_MATCHES_HEADER(3)
+@@ -657,7 +657,7 @@ static void Bt2_MatchFinder_Skip(CMatchF
+   while (--num != 0);
+ }
+ 
+-void Bt3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num)
++static __maybe_unused void Bt3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num)
+ {
+   do
+   {
+@@ -718,7 +718,7 @@ static void Hc4_MatchFinder_Skip(CMatchF
+   while (--num != 0);
+ }
+ 
+-void Hc3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num)
++static __maybe_unused void Hc3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num)
+ {
+   do
+   {

diff --git a/target/linux/generic/patches-3.0/512-jffs2_eofdetect.patch b/target/linux/generic/patches-3.0/512-jffs2_eofdetect.patch
new file mode 100644 (file)
index 0000000..d4843ad
--- /dev/null
+++ b/target/linux/generic/patches-3.0/512-jffs2_eofdetect.patch
@@ -0,0 +1,132 @@
+--- a/fs/jffs2/build.c
++++ b/fs/jffs2/build.c
+@@ -112,6 +112,17 @@ static int jffs2_build_filesystem(struct
+       dbg_fsbuild("scanned flash completely\n");
+       jffs2_dbg_dump_block_lists_nolock(c);
+ 
++      if (c->flags & (1 << 7)) {
++              printk("%s(): unlocking the mtd device... ", __func__);
++              if (c->mtd->unlock)
++                      c->mtd->unlock(c->mtd, 0, c->mtd->size);
++              printk("done.\n");
++
++              printk("%s(): erasing all blocks after the end marker... ", __func__);
++              jffs2_erase_pending_blocks(c, -1);
++              printk("done.\n");
++      }
++
+       dbg_fsbuild("pass 1 starting\n");
+       c->flags |= JFFS2_SB_FLAG_BUILDING;
+       /* Now scan the directory tree, increasing nlink according to every dirent found. */
+--- a/fs/jffs2/scan.c
++++ b/fs/jffs2/scan.c
+@@ -72,7 +72,7 @@ static int file_dirty(struct jffs2_sb_in
+               return ret;
+       if ((ret = jffs2_scan_dirty_space(c, jeb, jeb->free_size)))
+               return ret;
+-      /* Turned wasted size into dirty, since we apparently 
++      /* Turned wasted size into dirty, since we apparently
+          think it's recoverable now. */
+       jeb->dirty_size += jeb->wasted_size;
+       c->dirty_size += jeb->wasted_size;
+@@ -147,8 +147,11 @@ int jffs2_scan_medium(struct jffs2_sb_in
+               /* reset summary info for next eraseblock scan */
+               jffs2_sum_reset_collected(s);
+ 
+-              ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset),
+-                                              buf_size, s);
++              if (c->flags & (1 << 7))
++                      ret = BLK_STATE_ALLFF;
++              else
++                      ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset),
++                                                      buf_size, s);
+ 
+               if (ret < 0)
+                       goto out;
+@@ -405,7 +408,7 @@ static int jffs2_scan_xref_node(struct j
+       if (!ref)
+               return -ENOMEM;
+ 
+-      /* BEFORE jffs2_build_xattr_subsystem() called, 
++      /* BEFORE jffs2_build_xattr_subsystem() called,
+        * and AFTER xattr_ref is marked as a dead xref,
+        * ref->xid is used to store 32bit xid, xd is not used
+        * ref->ino is used to store 32bit inode-number, ic is not used
+@@ -478,7 +481,7 @@ static int jffs2_scan_eraseblock (struct
+               struct jffs2_sum_marker *sm;
+               void *sumptr = NULL;
+               uint32_t sumlen;
+-            
++
+               if (!buf_size) {
+                       /* XIP case. Just look, point at the summary if it's there */
+                       sm = (void *)buf + c->sector_size - sizeof(*sm);
+@@ -494,9 +497,9 @@ static int jffs2_scan_eraseblock (struct
+                               buf_len = sizeof(*sm);
+ 
+                       /* Read as much as we want into the _end_ of the preallocated buffer */
+-                      err = jffs2_fill_scan_buf(c, buf + buf_size - buf_len, 
++                      err = jffs2_fill_scan_buf(c, buf + buf_size - buf_len,
+                                                 jeb->offset + c->sector_size - buf_len,
+-                                                buf_len);                             
++                                                buf_len);
+                       if (err)
+                               return err;
+ 
+@@ -515,9 +518,9 @@ static int jffs2_scan_eraseblock (struct
+                               }
+                               if (buf_len < sumlen) {
+                                       /* Need to read more so that the entire summary node is present */
+-                                      err = jffs2_fill_scan_buf(c, sumptr, 
++                                      err = jffs2_fill_scan_buf(c, sumptr,
+                                                                 jeb->offset + c->sector_size - sumlen,
+-                                                                sumlen - buf_len);                            
++                                                                sumlen - buf_len);
+                                       if (err)
+                                               return err;
+                               }
+@@ -530,7 +533,7 @@ static int jffs2_scan_eraseblock (struct
+ 
+                       if (buf_size && sumlen > buf_size)
+                               kfree(sumptr);
+-                      /* If it returns with a real error, bail. 
++                      /* If it returns with a real error, bail.
+                          If it returns positive, that's a block classification
+                          (i.e. BLK_STATE_xxx) so return that too.
+                          If it returns zero, fall through to full scan. */
+@@ -551,6 +554,17 @@ static int jffs2_scan_eraseblock (struct
+                       return err;
+       }
+ 
++      if ((buf[0] == 0xde) &&
++              (buf[1] == 0xad) &&
++              (buf[2] == 0xc0) &&
++              (buf[3] == 0xde)) {
++              /* end of filesystem. erase everything after this point */
++              printk("%s(): End of filesystem marker found at 0x%x\n", __func__, jeb->offset);
++              c->flags |= (1 << 7);
++
++              return BLK_STATE_ALLFF;
++      }
++
+       /* We temporarily use 'ofs' as a pointer into the buffer/jeb */
+       ofs = 0;
+       max_ofs = EMPTY_SCAN_SIZE(c->sector_size);
+@@ -676,7 +690,7 @@ scan_more:
+                               scan_end = buf_len;
+                               goto more_empty;
+                       }
+-                      
++
+                       /* See how much more there is to read in this eraseblock... */
+                       buf_len = min_t(uint32_t, buf_size, jeb->offset + c->sector_size - ofs);
+                       if (!buf_len) {
+@@ -912,7 +926,7 @@ scan_more:
+ 
+       D1(printk(KERN_DEBUG "Block at 0x%08x: free 0x%08x, dirty 0x%08x, unchecked 0x%08x, used 0x%08x, wasted 0x%08x\n",
+                 jeb->offset,jeb->free_size, jeb->dirty_size, jeb->unchecked_size, jeb->used_size, jeb->wasted_size));
+-      
++
+       /* mark_node_obsolete can add to wasted !! */
+       if (jeb->wasted_size) {
+               jeb->dirty_size += jeb->wasted_size;

diff --git a/target/linux/generic/patches-3.0/520-squashfs_update_xz_comp_opts.patch b/target/linux/generic/patches-3.0/520-squashfs_update_xz_comp_opts.patch
new file mode 100644 (file)
index 0000000..523b89f
--- /dev/null
+++ b/target/linux/generic/patches-3.0/520-squashfs_update_xz_comp_opts.patch
@@ -0,0 +1,25 @@
+From f31b7c0efa255dd17a5f584022a319387f09b0d8 Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <jonas.gorski@gmail.com>
+Date: Tue, 12 Apr 2011 19:55:41 +0200
+Subject: [PATCH] squashfs: update xz compressor options struct.
+
+Update the xz compressor options struct to match the squashfs userspace
+one.
+---
+ fs/squashfs/xz_wrapper.c |    4 +++-
+ 1 files changed, 3 insertions(+), 1 deletions(-)
+
+--- a/fs/squashfs/xz_wrapper.c
++++ b/fs/squashfs/xz_wrapper.c
+@@ -39,8 +39,10 @@ struct squashfs_xz {
+ };
+ 
+ struct comp_opts {
+-      __le32 dictionary_size;
+       __le32 flags;
++      __le16 bit_opts;
++      __le16 fb;
++      __le32 dictionary_size;
+ };
+ 
+ static void *squashfs_xz_init(struct squashfs_sb_info *msblk, void *buff,

diff --git a/target/linux/generic/patches-3.0/600-netfilter_layer7_2.22.patch b/target/linux/generic/patches-3.0/600-netfilter_layer7_2.22.patch
new file mode 100644 (file)
index 0000000..389152b
--- /dev/null
+++ b/target/linux/generic/patches-3.0/600-netfilter_layer7_2.22.patch
@@ -0,0 +1,2132 @@
+--- a/net/netfilter/Kconfig
++++ b/net/netfilter/Kconfig
+@@ -1018,6 +1018,27 @@ config NETFILTER_XT_MATCH_STATE
+ 
+         To compile it as a module, choose M here.  If unsure, say N.
+ 
++config NETFILTER_XT_MATCH_LAYER7
++      tristate '"layer7" match support'
++      depends on NETFILTER_XTABLES
++      depends on EXPERIMENTAL && (IP_NF_CONNTRACK || NF_CONNTRACK)
++       depends on NETFILTER_ADVANCED
++      help
++        Say Y if you want to be able to classify connections (and their
++        packets) based on regular expression matching of their application
++        layer data.   This is one way to classify applications such as
++        peer-to-peer filesharing systems that do not always use the same
++        port.
++
++        To compile it as a module, choose M here.  If unsure, say N.
++
++config NETFILTER_XT_MATCH_LAYER7_DEBUG
++        bool 'Layer 7 debugging output'
++        depends on NETFILTER_XT_MATCH_LAYER7
++        help
++          Say Y to get lots of debugging output.
++
++
+ config NETFILTER_XT_MATCH_STATISTIC
+       tristate '"statistic" match support'
+       depends on NETFILTER_ADVANCED
+--- a/net/netfilter/Makefile
++++ b/net/netfilter/Makefile
+@@ -102,6 +102,7 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_RECENT)
+ obj-$(CONFIG_NETFILTER_XT_MATCH_SCTP) += xt_sctp.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_SOCKET) += xt_socket.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_STATE) += xt_state.o
++obj-$(CONFIG_NETFILTER_XT_MATCH_LAYER7) += xt_layer7.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_STATISTIC) += xt_statistic.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_STRING) += xt_string.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_TCPMSS) += xt_tcpmss.o
+--- /dev/null
++++ b/net/netfilter/xt_layer7.c
+@@ -0,0 +1,666 @@
++/*
++  Kernel module to match application layer (OSI layer 7) data in connections.
++
++  http://l7-filter.sf.net
++
++  (C) 2003-2009 Matthew Strait and Ethan Sommer.
++
++  This program is free software; you can redistribute it and/or
++  modify it under the terms of the GNU General Public License
++  as published by the Free Software Foundation; either version
++  2 of the License, or (at your option) any later version.
++  http://www.gnu.org/licenses/gpl.txt
++
++  Based on ipt_string.c (C) 2000 Emmanuel Roger <winfield@freegates.be>,
++  xt_helper.c (C) 2002 Harald Welte and cls_layer7.c (C) 2003 Matthew Strait,
++  Ethan Sommer, Justin Levandoski.
++*/
++
++#include <linux/spinlock.h>
++#include <linux/version.h>
++#include <net/ip.h>
++#include <net/tcp.h>
++#include <linux/module.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter.h>
++#include <net/netfilter/nf_conntrack.h>
++#include <net/netfilter/nf_conntrack_core.h>
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
++#include <net/netfilter/nf_conntrack_extend.h>
++#include <net/netfilter/nf_conntrack_acct.h>
++#endif
++#include <linux/netfilter/x_tables.h>
++#include <linux/netfilter/xt_layer7.h>
++#include <linux/ctype.h>
++#include <linux/proc_fs.h>
++
++#include "regexp/regexp.c"
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Matthew Strait <quadong@users.sf.net>, Ethan Sommer <sommere@users.sf.net>");
++MODULE_DESCRIPTION("iptables application layer match module");
++MODULE_ALIAS("ipt_layer7");
++MODULE_VERSION("2.21");
++
++static int maxdatalen = 2048; // this is the default
++module_param(maxdatalen, int, 0444);
++MODULE_PARM_DESC(maxdatalen, "maximum bytes of data looked at by l7-filter");
++#ifdef CONFIG_NETFILTER_XT_MATCH_LAYER7_DEBUG
++      #define DPRINTK(format,args...) printk(format,##args)
++#else
++      #define DPRINTK(format,args...)
++#endif
++
++/* Number of packets whose data we look at.
++This can be modified through /proc/net/layer7_numpackets */
++static int num_packets = 10;
++
++static struct pattern_cache {
++      char * regex_string;
++      regexp * pattern;
++      struct pattern_cache * next;
++} * first_pattern_cache = NULL;
++
++DEFINE_SPINLOCK(l7_lock);
++
++static int total_acct_packets(struct nf_conn *ct)
++{
++#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 26)
++      BUG_ON(ct == NULL);
++      return (ct->counters[IP_CT_DIR_ORIGINAL].packets + ct->counters[IP_CT_DIR_REPLY].packets);
++#else
++      struct nf_conn_counter *acct;
++
++      BUG_ON(ct == NULL);
++      acct = nf_conn_acct_find(ct);
++      if (!acct)
++              return 0;
++      return (acct[IP_CT_DIR_ORIGINAL].packets + acct[IP_CT_DIR_REPLY].packets);
++#endif
++}
++
++#ifdef CONFIG_IP_NF_MATCH_LAYER7_DEBUG
++/* Converts an unfriendly string into a friendly one by
++replacing unprintables with periods and all whitespace with " ". */
++static char * friendly_print(unsigned char * s)
++{
++      char * f = kmalloc(strlen(s) + 1, GFP_ATOMIC);
++      int i;
++
++      if(!f) {
++              if (net_ratelimit())
++                      printk(KERN_ERR "layer7: out of memory in "
++                                      "friendly_print, bailing.\n");
++              return NULL;
++      }
++
++      for(i = 0; i < strlen(s); i++){
++              if(isprint(s[i]) && s[i] < 128) f[i] = s[i];
++              else if(isspace(s[i]))          f[i] = ' ';
++              else                            f[i] = '.';
++      }
++      f[i] = '\0';
++      return f;
++}
++
++static char dec2hex(int i)
++{
++      switch (i) {
++              case 0 ... 9:
++                      return (i + '0');
++                      break;
++              case 10 ... 15:
++                      return (i - 10 + 'a');
++                      break;
++              default:
++                      if (net_ratelimit())
++                              printk("layer7: Problem in dec2hex\n");
++                      return '\0';
++      }
++}
++
++static char * hex_print(unsigned char * s)
++{
++      char * g = kmalloc(strlen(s)*3 + 1, GFP_ATOMIC);
++      int i;
++
++      if(!g) {
++             if (net_ratelimit())
++                      printk(KERN_ERR "layer7: out of memory in hex_print, "
++                                      "bailing.\n");
++             return NULL;
++      }
++
++      for(i = 0; i < strlen(s); i++) {
++              g[i*3    ] = dec2hex(s[i]/16);
++              g[i*3 + 1] = dec2hex(s[i]%16);
++              g[i*3 + 2] = ' ';
++      }
++      g[i*3] = '\0';
++
++      return g;
++}
++#endif // DEBUG
++
++/* Use instead of regcomp.  As we expect to be seeing the same regexps over and
++over again, it make sense to cache the results. */
++static regexp * compile_and_cache(const char * regex_string, 
++                                  const char * protocol)
++{
++      struct pattern_cache * node               = first_pattern_cache;
++      struct pattern_cache * last_pattern_cache = first_pattern_cache;
++      struct pattern_cache * tmp;
++      unsigned int len;
++
++      while (node != NULL) {
++              if (!strcmp(node->regex_string, regex_string))
++              return node->pattern;
++
++              last_pattern_cache = node;/* points at the last non-NULL node */
++              node = node->next;
++      }
++
++      /* If we reach the end of the list, then we have not yet cached
++         the pattern for this regex. Let's do that now.
++         Be paranoid about running out of memory to avoid list corruption. */
++      tmp = kmalloc(sizeof(struct pattern_cache), GFP_ATOMIC);
++
++      if(!tmp) {
++              if (net_ratelimit())
++                      printk(KERN_ERR "layer7: out of memory in "
++                                      "compile_and_cache, bailing.\n");
++              return NULL;
++      }
++
++      tmp->regex_string  = kmalloc(strlen(regex_string) + 1, GFP_ATOMIC);
++      tmp->pattern       = kmalloc(sizeof(struct regexp),    GFP_ATOMIC);
++      tmp->next = NULL;
++
++      if(!tmp->regex_string || !tmp->pattern) {
++              if (net_ratelimit())
++                      printk(KERN_ERR "layer7: out of memory in "
++                                      "compile_and_cache, bailing.\n");
++              kfree(tmp->regex_string);
++              kfree(tmp->pattern);
++              kfree(tmp);
++              return NULL;
++      }
++
++      /* Ok.  The new node is all ready now. */
++      node = tmp;
++
++      if(first_pattern_cache == NULL) /* list is empty */
++              first_pattern_cache = node; /* make node the beginning */
++      else
++              last_pattern_cache->next = node; /* attach node to the end */
++
++      /* copy the string and compile the regex */
++      len = strlen(regex_string);
++      DPRINTK("About to compile this: \"%s\"\n", regex_string);
++      node->pattern = regcomp((char *)regex_string, &len);
++      if ( !node->pattern ) {
++              if (net_ratelimit())
++                      printk(KERN_ERR "layer7: Error compiling regexp "
++                                      "\"%s\" (%s)\n", 
++                                      regex_string, protocol);
++              /* pattern is now cached as NULL, so we won't try again. */
++      }
++
++      strcpy(node->regex_string, regex_string);
++      return node->pattern;
++}
++
++static int can_handle(const struct sk_buff *skb)
++{
++      if(!ip_hdr(skb)) /* not IP */
++              return 0;
++      if(ip_hdr(skb)->protocol != IPPROTO_TCP &&
++         ip_hdr(skb)->protocol != IPPROTO_UDP &&
++         ip_hdr(skb)->protocol != IPPROTO_ICMP)
++              return 0;
++      return 1;
++}
++
++/* Returns offset the into the skb->data that the application data starts */
++static int app_data_offset(const struct sk_buff *skb)
++{
++      /* In case we are ported somewhere (ebtables?) where ip_hdr(skb)
++      isn't set, this can be gotten from 4*(skb->data[0] & 0x0f) as well. */
++      int ip_hl = 4*ip_hdr(skb)->ihl;
++
++      if( ip_hdr(skb)->protocol == IPPROTO_TCP ) {
++              /* 12 == offset into TCP header for the header length field.
++              Can't get this with skb->h.th->doff because the tcphdr
++              struct doesn't get set when routing (this is confirmed to be
++              true in Netfilter as well as QoS.) */
++              int tcp_hl = 4*(skb->data[ip_hl + 12] >> 4);
++
++              return ip_hl + tcp_hl;
++      } else if( ip_hdr(skb)->protocol == IPPROTO_UDP  ) {
++              return ip_hl + 8; /* UDP header is always 8 bytes */
++      } else if( ip_hdr(skb)->protocol == IPPROTO_ICMP ) {
++              return ip_hl + 8; /* ICMP header is 8 bytes */
++      } else {
++              if (net_ratelimit())
++                      printk(KERN_ERR "layer7: tried to handle unknown "
++                                      "protocol!\n");
++              return ip_hl + 8; /* something reasonable */
++      }
++}
++
++/* handles whether there's a match when we aren't appending data anymore */
++static int match_no_append(struct nf_conn * conntrack, 
++                           struct nf_conn * master_conntrack, 
++                           enum ip_conntrack_info ctinfo,
++                           enum ip_conntrack_info master_ctinfo,
++                           const struct xt_layer7_info * info)
++{
++      /* If we're in here, throw the app data away */
++      if(master_conntrack->layer7.app_data != NULL) {
++
++      #ifdef CONFIG_IP_NF_MATCH_LAYER7_DEBUG
++              if(!master_conntrack->layer7.app_proto) {
++                      char * f = 
++                        friendly_print(master_conntrack->layer7.app_data);
++                      char * g = 
++                        hex_print(master_conntrack->layer7.app_data);
++                      DPRINTK("\nl7-filter gave up after %d bytes "
++                              "(%d packets):\n%s\n",
++                              strlen(f), total_acct_packets(master_conntrack), f);
++                      kfree(f);
++                      DPRINTK("In hex: %s\n", g);
++                      kfree(g);
++              }
++      #endif
++
++              kfree(master_conntrack->layer7.app_data);
++              master_conntrack->layer7.app_data = NULL; /* don't free again */
++      }
++
++      if(master_conntrack->layer7.app_proto){
++              /* Here child connections set their .app_proto (for /proc) */
++              if(!conntrack->layer7.app_proto) {
++                      conntrack->layer7.app_proto = 
++                        kmalloc(strlen(master_conntrack->layer7.app_proto)+1, 
++                          GFP_ATOMIC);
++                      if(!conntrack->layer7.app_proto){
++                              if (net_ratelimit())
++                                      printk(KERN_ERR "layer7: out of memory "
++                                                      "in match_no_append, "
++                                                      "bailing.\n");
++                              return 1;
++                      }
++                      strcpy(conntrack->layer7.app_proto, 
++                              master_conntrack->layer7.app_proto);
++              }
++
++              return (!strcmp(master_conntrack->layer7.app_proto, 
++                              info->protocol));
++      }
++      else {
++              /* If not classified, set to "unknown" to distinguish from
++              connections that are still being tested. */
++              master_conntrack->layer7.app_proto = 
++                      kmalloc(strlen("unknown")+1, GFP_ATOMIC);
++              if(!master_conntrack->layer7.app_proto){
++                      if (net_ratelimit())
++                              printk(KERN_ERR "layer7: out of memory in "
++                                              "match_no_append, bailing.\n");
++                      return 1;
++              }
++              strcpy(master_conntrack->layer7.app_proto, "unknown");
++              return 0;
++      }
++}
++
++/* add the new app data to the conntrack.  Return number of bytes added. */
++static int add_data(struct nf_conn * master_conntrack,
++                    char * app_data, int appdatalen)
++{
++      int length = 0, i;
++      int oldlength = master_conntrack->layer7.app_data_len;
++
++      /* This is a fix for a race condition by Deti Fliegl. However, I'm not 
++         clear on whether the race condition exists or whether this really 
++         fixes it.  I might just be being dense... Anyway, if it's not really 
++         a fix, all it does is waste a very small amount of time. */
++      if(!master_conntrack->layer7.app_data) return 0;
++
++      /* Strip nulls. Make everything lower case (our regex lib doesn't
++      do case insensitivity).  Add it to the end of the current data. */
++      for(i = 0; i < maxdatalen-oldlength-1 &&
++                 i < appdatalen; i++) {
++              if(app_data[i] != '\0') {
++                      /* the kernel version of tolower mungs 'upper ascii' */
++                      master_conntrack->layer7.app_data[length+oldlength] =
++                              isascii(app_data[i])? 
++                                      tolower(app_data[i]) : app_data[i];
++                      length++;
++              }
++      }
++
++      master_conntrack->layer7.app_data[length+oldlength] = '\0';
++      master_conntrack->layer7.app_data_len = length + oldlength;
++
++      return length;
++}
++
++/* taken from drivers/video/modedb.c */
++static int my_atoi(const char *s)
++{
++      int val = 0;
++
++      for (;; s++) {
++              switch (*s) {
++                      case '0'...'9':
++                      val = 10*val+(*s-'0');
++                      break;
++              default:
++                      return val;
++              }
++      }
++}
++
++/* write out num_packets to userland. */
++static int layer7_read_proc(char* page, char ** start, off_t off, int count,
++                            int* eof, void * data)
++{
++      if(num_packets > 99 && net_ratelimit())
++              printk(KERN_ERR "layer7: NOT REACHED. num_packets too big\n");
++
++      page[0] = num_packets/10 + '0';
++      page[1] = num_packets%10 + '0';
++      page[2] = '\n';
++      page[3] = '\0';
++
++      *eof=1;
++
++      return 3;
++}
++
++/* Read in num_packets from userland */
++static int layer7_write_proc(struct file* file, const char* buffer,
++                             unsigned long count, void *data)
++{
++      char * foo = kmalloc(count, GFP_ATOMIC);
++
++      if(!foo){
++              if (net_ratelimit())
++                      printk(KERN_ERR "layer7: out of memory, bailing. "
++                                      "num_packets unchanged.\n");
++              return count;
++      }
++
++      if(copy_from_user(foo, buffer, count)) {
++              return -EFAULT;
++      }
++
++
++      num_packets = my_atoi(foo);
++      kfree (foo);
++
++      /* This has an arbitrary limit to make the math easier. I'm lazy.
++      But anyway, 99 is a LOT! If you want more, you're doing it wrong! */
++      if(num_packets > 99) {
++              printk(KERN_WARNING "layer7: num_packets can't be > 99.\n");
++              num_packets = 99;
++      } else if(num_packets < 1) {
++              printk(KERN_WARNING "layer7: num_packets can't be < 1.\n");
++              num_packets = 1;
++      }
++
++      return count;
++}
++
++static bool
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
++match(const struct sk_buff *skbin, const struct xt_match_param *par)
++#else
++match(const struct sk_buff *skbin,
++      const struct net_device *in,
++      const struct net_device *out,
++      const struct xt_match *match,
++      const void *matchinfo,
++      int offset,
++      unsigned int protoff,
++      bool *hotdrop)
++#endif
++{
++      /* sidestep const without getting a compiler warning... */
++      struct sk_buff * skb = (struct sk_buff *)skbin; 
++
++      const struct xt_layer7_info * info = 
++      #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
++              par->matchinfo;
++      #else
++              matchinfo;
++      #endif
++
++      enum ip_conntrack_info master_ctinfo, ctinfo;
++      struct nf_conn *master_conntrack, *conntrack;
++      unsigned char * app_data;
++      unsigned int pattern_result, appdatalen;
++      regexp * comppattern;
++
++      /* Be paranoid/incompetent - lock the entire match function. */
++      spin_lock_bh(&l7_lock);
++
++      if(!can_handle(skb)){
++              DPRINTK("layer7: This is some protocol I can't handle.\n");
++              spin_unlock_bh(&l7_lock);
++              return info->invert;
++      }
++
++      /* Treat parent & all its children together as one connection, except
++      for the purpose of setting conntrack->layer7.app_proto in the actual
++      connection. This makes /proc/net/ip_conntrack more satisfying. */
++      if(!(conntrack = nf_ct_get(skb, &ctinfo)) ||
++         !(master_conntrack=nf_ct_get(skb,&master_ctinfo))){
++              DPRINTK("layer7: couldn't get conntrack.\n");
++              spin_unlock_bh(&l7_lock);
++              return info->invert;
++      }
++
++      /* Try to get a master conntrack (and its master etc) for FTP, etc. */
++      while (master_ct(master_conntrack) != NULL)
++              master_conntrack = master_ct(master_conntrack);
++
++      /* if we've classified it or seen too many packets */
++      if(total_acct_packets(master_conntrack) > num_packets ||
++         master_conntrack->layer7.app_proto) {
++
++              pattern_result = match_no_append(conntrack, master_conntrack, 
++                                               ctinfo, master_ctinfo, info);
++
++              /* skb->cb[0] == seen. Don't do things twice if there are 
++              multiple l7 rules. I'm not sure that using cb for this purpose 
++              is correct, even though it says "put your private variables 
++              there". But it doesn't look like it is being used for anything
++              else in the skbs that make it here. */
++              skb->cb[0] = 1; /* marking it seen here's probably irrelevant */
++
++              spin_unlock_bh(&l7_lock);
++              return (pattern_result ^ info->invert);
++      }
++
++      if(skb_is_nonlinear(skb)){
++              if(skb_linearize(skb) != 0){
++                      if (net_ratelimit())
++                              printk(KERN_ERR "layer7: failed to linearize "
++                                              "packet, bailing.\n");
++                      spin_unlock_bh(&l7_lock);
++                      return info->invert;
++              }
++      }
++
++      /* now that the skb is linearized, it's safe to set these. */
++      app_data = skb->data + app_data_offset(skb);
++      appdatalen = skb_tail_pointer(skb) - app_data;
++
++      /* the return value gets checked later, when we're ready to use it */
++      comppattern = compile_and_cache(info->pattern, info->protocol);
++
++      /* On the first packet of a connection, allocate space for app data */
++      if(total_acct_packets(master_conntrack) == 1 && !skb->cb[0] && 
++         !master_conntrack->layer7.app_data){
++              master_conntrack->layer7.app_data = 
++                      kmalloc(maxdatalen, GFP_ATOMIC);
++              if(!master_conntrack->layer7.app_data){
++                      if (net_ratelimit())
++                              printk(KERN_ERR "layer7: out of memory in "
++                                              "match, bailing.\n");
++                      spin_unlock_bh(&l7_lock);
++                      return info->invert;
++              }
++
++              master_conntrack->layer7.app_data[0] = '\0';
++      }
++
++      /* Can be here, but unallocated, if numpackets is increased near
++      the beginning of a connection */
++      if(master_conntrack->layer7.app_data == NULL){
++              spin_unlock_bh(&l7_lock);
++              return info->invert; /* unmatched */
++      }
++
++      if(!skb->cb[0]){
++              int newbytes;
++              newbytes = add_data(master_conntrack, app_data, appdatalen);
++
++              if(newbytes == 0) { /* didn't add any data */
++                      skb->cb[0] = 1;
++                      /* Didn't match before, not going to match now */
++                      spin_unlock_bh(&l7_lock);
++                      return info->invert;
++              }
++      }
++
++      /* If looking for "unknown", then never match.  "Unknown" means that
++      we've given up; we're still trying with these packets. */
++      if(!strcmp(info->protocol, "unknown")) {
++              pattern_result = 0;
++      /* If looking for "unset", then always match. "Unset" means that we
++      haven't yet classified the connection. */
++      } else if(!strcmp(info->protocol, "unset")) {
++              pattern_result = 2;
++              DPRINTK("layer7: matched unset: not yet classified "
++                      "(%d/%d packets)\n",
++                        total_acct_packets(master_conntrack), num_packets);
++      /* If the regexp failed to compile, don't bother running it */
++      } else if(comppattern && 
++                regexec(comppattern, master_conntrack->layer7.app_data)){
++              DPRINTK("layer7: matched %s\n", info->protocol);
++              pattern_result = 1;
++      } else pattern_result = 0;
++
++      if(pattern_result == 1) {
++              master_conntrack->layer7.app_proto = 
++                      kmalloc(strlen(info->protocol)+1, GFP_ATOMIC);
++              if(!master_conntrack->layer7.app_proto){
++                      if (net_ratelimit())
++                              printk(KERN_ERR "layer7: out of memory in "
++                                              "match, bailing.\n");
++                      spin_unlock_bh(&l7_lock);
++                      return (pattern_result ^ info->invert);
++              }
++              strcpy(master_conntrack->layer7.app_proto, info->protocol);
++      } else if(pattern_result > 1) { /* cleanup from "unset" */
++              pattern_result = 1;
++      }
++
++      /* mark the packet seen */
++      skb->cb[0] = 1;
++
++      spin_unlock_bh(&l7_lock);
++      return (pattern_result ^ info->invert);
++}
++
++// load nf_conntrack_ipv4
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
++static bool check(const struct xt_mtchk_param *par)
++{
++        if (nf_ct_l3proto_try_module_get(par->match->family) < 0) {
++                printk(KERN_WARNING "can't load conntrack support for "
++                                    "proto=%d\n", par->match->family);
++#else
++static bool check(const char *tablename, const void *inf,
++               const struct xt_match *match, void *matchinfo,
++               unsigned int hook_mask)
++{
++        if (nf_ct_l3proto_try_module_get(match->family) < 0) {
++                printk(KERN_WARNING "can't load conntrack support for "
++                                    "proto=%d\n", match->family);
++#endif
++                return 0;
++        }
++      return 1;
++}
++
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
++      static void destroy(const struct xt_mtdtor_param *par)
++      {
++              nf_ct_l3proto_module_put(par->match->family);
++      }
++#else
++      static void destroy(const struct xt_match *match, void *matchinfo)
++      {
++              nf_ct_l3proto_module_put(match->family);
++      }
++#endif
++
++static struct xt_match xt_layer7_match[] __read_mostly = {
++{
++      .name           = "layer7",
++      .family         = AF_INET,
++      .checkentry     = check,
++      .match          = match,
++      .destroy        = destroy,
++      .matchsize      = sizeof(struct xt_layer7_info),
++      .me             = THIS_MODULE
++}
++};
++
++static void layer7_cleanup_proc(void)
++{
++      remove_proc_entry("layer7_numpackets", init_net.proc_net);
++}
++
++/* register the proc file */
++static void layer7_init_proc(void)
++{
++      struct proc_dir_entry* entry;
++      entry = create_proc_entry("layer7_numpackets", 0644, init_net.proc_net);
++      entry->read_proc = layer7_read_proc;
++      entry->write_proc = layer7_write_proc;
++}
++
++static int __init xt_layer7_init(void)
++{
++      need_conntrack();
++
++      layer7_init_proc();
++      if(maxdatalen < 1) {
++              printk(KERN_WARNING "layer7: maxdatalen can't be < 1, "
++                      "using 1\n");
++              maxdatalen = 1;
++      }
++      /* This is not a hard limit.  It's just here to prevent people from
++      bringing their slow machines to a grinding halt. */
++      else if(maxdatalen > 65536) {
++              printk(KERN_WARNING "layer7: maxdatalen can't be > 65536, "
++                      "using 65536\n");
++              maxdatalen = 65536;
++      }
++      return xt_register_matches(xt_layer7_match,
++                                 ARRAY_SIZE(xt_layer7_match));
++}
++
++static void __exit xt_layer7_fini(void)
++{
++      layer7_cleanup_proc();
++      xt_unregister_matches(xt_layer7_match, ARRAY_SIZE(xt_layer7_match));
++}
++
++module_init(xt_layer7_init);
++module_exit(xt_layer7_fini);
+--- /dev/null
++++ b/net/netfilter/regexp/regexp.c
+@@ -0,0 +1,1197 @@
++/*
++ * regcomp and regexec -- regsub and regerror are elsewhere
++ * @(#)regexp.c       1.3 of 18 April 87
++ *
++ *    Copyright (c) 1986 by University of Toronto.
++ *    Written by Henry Spencer.  Not derived from licensed software.
++ *
++ *    Permission is granted to anyone to use this software for any
++ *    purpose on any computer system, and to redistribute it freely,
++ *    subject to the following restrictions:
++ *
++ *    1. The author is not responsible for the consequences of use of
++ *            this software, no matter how awful, even if they arise
++ *            from defects in it.
++ *
++ *    2. The origin of this software must not be misrepresented, either
++ *            by explicit claim or by omission.
++ *
++ *    3. Altered versions must be plainly marked as such, and must not
++ *            be misrepresented as being the original software.
++ *
++ * Beware that some of this code is subtly aware of the way operator
++ * precedence is structured in regular expressions.  Serious changes in
++ * regular-expression syntax might require a total rethink.
++ *
++ * This code was modified by Ethan Sommer to work within the kernel
++ * (it now uses kmalloc etc..)
++ *
++ * Modified slightly by Matthew Strait to use more modern C.
++ */
++
++#include "regexp.h"
++#include "regmagic.h"
++
++/* added by ethan and matt.  Lets it work in both kernel and user space.
++(So iptables can use it, for instance.)  Yea, it goes both ways... */
++#if __KERNEL__
++  #define malloc(foo) kmalloc(foo,GFP_ATOMIC)
++#else
++  #define printk(format,args...) printf(format,##args)
++#endif
++
++void regerror(char * s)
++{
++        printk("<3>Regexp: %s\n", s);
++        /* NOTREACHED */
++}
++
++/*
++ * The "internal use only" fields in regexp.h are present to pass info from
++ * compile to execute that permits the execute phase to run lots faster on
++ * simple cases.  They are:
++ *
++ * regstart   char that must begin a match; '\0' if none obvious
++ * reganch    is the match anchored (at beginning-of-line only)?
++ * regmust    string (pointer into program) that match must include, or NULL
++ * regmlen    length of regmust string
++ *
++ * Regstart and reganch permit very fast decisions on suitable starting points
++ * for a match, cutting down the work a lot.  Regmust permits fast rejection
++ * of lines that cannot possibly match.  The regmust tests are costly enough
++ * that regcomp() supplies a regmust only if the r.e. contains something
++ * potentially expensive (at present, the only such thing detected is * or +
++ * at the start of the r.e., which can involve a lot of backup).  Regmlen is
++ * supplied because the test in regexec() needs it and regcomp() is computing
++ * it anyway.
++ */
++
++/*
++ * Structure for regexp "program".  This is essentially a linear encoding
++ * of a nondeterministic finite-state machine (aka syntax charts or
++ * "railroad normal form" in parsing technology).  Each node is an opcode
++ * plus a "next" pointer, possibly plus an operand.  "Next" pointers of
++ * all nodes except BRANCH implement concatenation; a "next" pointer with
++ * a BRANCH on both ends of it is connecting two alternatives.  (Here we
++ * have one of the subtle syntax dependencies:  an individual BRANCH (as
++ * opposed to a collection of them) is never concatenated with anything
++ * because of operator precedence.)  The operand of some types of node is
++ * a literal string; for others, it is a node leading into a sub-FSM.  In
++ * particular, the operand of a BRANCH node is the first node of the branch.
++ * (NB this is *not* a tree structure:  the tail of the branch connects
++ * to the thing following the set of BRANCHes.)  The opcodes are:
++ */
++
++/* definition number  opnd?   meaning */
++#define       END     0       /* no   End of program. */
++#define       BOL     1       /* no   Match "" at beginning of line. */
++#define       EOL     2       /* no   Match "" at end of line. */
++#define       ANY     3       /* no   Match any one character. */
++#define       ANYOF   4       /* str  Match any character in this string. */
++#define       ANYBUT  5       /* str  Match any character not in this string. */
++#define       BRANCH  6       /* node Match this alternative, or the next... */
++#define       BACK    7       /* no   Match "", "next" ptr points backward. */
++#define       EXACTLY 8       /* str  Match this string. */
++#define       NOTHING 9       /* no   Match empty string. */
++#define       STAR    10      /* node Match this (simple) thing 0 or more times. */
++#define       PLUS    11      /* node Match this (simple) thing 1 or more times. */
++#define       OPEN    20      /* no   Mark this point in input as start of #n. */
++                      /*      OPEN+1 is number 1, etc. */
++#define       CLOSE   30      /* no   Analogous to OPEN. */
++
++/*
++ * Opcode notes:
++ *
++ * BRANCH     The set of branches constituting a single choice are hooked
++ *            together with their "next" pointers, since precedence prevents
++ *            anything being concatenated to any individual branch.  The
++ *            "next" pointer of the last BRANCH in a choice points to the
++ *            thing following the whole choice.  This is also where the
++ *            final "next" pointer of each individual branch points; each
++ *            branch starts with the operand node of a BRANCH node.
++ *
++ * BACK               Normal "next" pointers all implicitly point forward; BACK
++ *            exists to make loop structures possible.
++ *
++ * STAR,PLUS  '?', and complex '*' and '+', are implemented as circular
++ *            BRANCH structures using BACK.  Simple cases (one character
++ *            per match) are implemented with STAR and PLUS for speed
++ *            and to minimize recursive plunges.
++ *
++ * OPEN,CLOSE ...are numbered at compile time.
++ */
++
++/*
++ * A node is one char of opcode followed by two chars of "next" pointer.
++ * "Next" pointers are stored as two 8-bit pieces, high order first.  The
++ * value is a positive offset from the opcode of the node containing it.
++ * An operand, if any, simply follows the node.  (Note that much of the
++ * code generation knows about this implicit relationship.)
++ *
++ * Using two bytes for the "next" pointer is vast overkill for most things,
++ * but allows patterns to get big without disasters.
++ */
++#define       OP(p)   (*(p))
++#define       NEXT(p) (((*((p)+1)&0377)<<8) + (*((p)+2)&0377))
++#define       OPERAND(p)      ((p) + 3)
++
++/*
++ * See regmagic.h for one further detail of program structure.
++ */
++
++
++/*
++ * Utility definitions.
++ */
++#ifndef CHARBITS
++#define       UCHARAT(p)      ((int)*(unsigned char *)(p))
++#else
++#define       UCHARAT(p)      ((int)*(p)&CHARBITS)
++#endif
++
++#define       FAIL(m) { regerror(m); return(NULL); }
++#define       ISMULT(c)       ((c) == '*' || (c) == '+' || (c) == '?')
++#define       META    "^$.[()|?+*\\"
++
++/*
++ * Flags to be passed up and down.
++ */
++#define       HASWIDTH        01      /* Known never to match null string. */
++#define       SIMPLE          02      /* Simple enough to be STAR/PLUS operand. */
++#define       SPSTART         04      /* Starts with * or +. */
++#define       WORST           0       /* Worst case. */
++
++/*
++ * Global work variables for regcomp().
++ */
++struct match_globals {
++char *reginput;               /* String-input pointer. */
++char *regbol;         /* Beginning of input, for ^ check. */
++char **regstartp;     /* Pointer to startp array. */
++char **regendp;               /* Ditto for endp. */
++char *regparse;               /* Input-scan pointer. */
++int regnpar;          /* () count. */
++char regdummy;
++char *regcode;                /* Code-emit pointer; &regdummy = don't. */
++long regsize;         /* Code size. */
++};
++
++/*
++ * Forward declarations for regcomp()'s friends.
++ */
++#ifndef STATIC
++#define       STATIC  static
++#endif
++STATIC char *reg(struct match_globals *g, int paren,int *flagp);
++STATIC char *regbranch(struct match_globals *g, int *flagp);
++STATIC char *regpiece(struct match_globals *g, int *flagp);
++STATIC char *regatom(struct match_globals *g, int *flagp);
++STATIC char *regnode(struct match_globals *g, char op);
++STATIC char *regnext(struct match_globals *g, char *p);
++STATIC void regc(struct match_globals *g, char b);
++STATIC void reginsert(struct match_globals *g, char op, char *opnd);
++STATIC void regtail(struct match_globals *g, char *p, char *val);
++STATIC void regoptail(struct match_globals *g, char *p, char *val);
++
++
++__kernel_size_t my_strcspn(const char *s1,const char *s2)
++{
++        char *scan1;
++        char *scan2;
++        int count;
++
++        count = 0;
++        for (scan1 = (char *)s1; *scan1 != '\0'; scan1++) {
++                for (scan2 = (char *)s2; *scan2 != '\0';)       /* ++ moved down. */
++                        if (*scan1 == *scan2++)
++                                return(count);
++                count++;
++        }
++        return(count);
++}
++
++/*
++ - regcomp - compile a regular expression into internal code
++ *
++ * We can't allocate space until we know how big the compiled form will be,
++ * but we can't compile it (and thus know how big it is) until we've got a
++ * place to put the code.  So we cheat:  we compile it twice, once with code
++ * generation turned off and size counting turned on, and once "for real".
++ * This also means that we don't allocate space until we are sure that the
++ * thing really will compile successfully, and we never have to move the
++ * code and thus invalidate pointers into it.  (Note that it has to be in
++ * one piece because free() must be able to free it all.)
++ *
++ * Beware that the optimization-preparation code in here knows about some
++ * of the structure of the compiled regexp.
++ */
++regexp *
++regcomp(char *exp,int *patternsize)
++{
++      register regexp *r;
++      register char *scan;
++      register char *longest;
++      register int len;
++      int flags;
++      struct match_globals g;
++      
++      /* commented out by ethan
++         extern char *malloc();
++      */
++
++      if (exp == NULL)
++              FAIL("NULL argument");
++
++      /* First pass: determine size, legality. */
++      g.regparse = exp;
++      g.regnpar = 1;
++      g.regsize = 0L;
++      g.regcode = &g.regdummy;
++      regc(&g, MAGIC);
++      if (reg(&g, 0, &flags) == NULL)
++              return(NULL);
++
++      /* Small enough for pointer-storage convention? */
++      if (g.regsize >= 32767L)                /* Probably could be 65535L. */
++              FAIL("regexp too big");
++
++      /* Allocate space. */
++      *patternsize=sizeof(regexp) + (unsigned)g.regsize;
++      r = (regexp *)malloc(sizeof(regexp) + (unsigned)g.regsize);
++      if (r == NULL)
++              FAIL("out of space");
++
++      /* Second pass: emit code. */
++      g.regparse = exp;
++      g.regnpar = 1;
++      g.regcode = r->program;
++      regc(&g, MAGIC);
++      if (reg(&g, 0, &flags) == NULL)
++              return(NULL);
++
++      /* Dig out information for optimizations. */
++      r->regstart = '\0';     /* Worst-case defaults. */
++      r->reganch = 0;
++      r->regmust = NULL;
++      r->regmlen = 0;
++      scan = r->program+1;                    /* First BRANCH. */
++      if (OP(regnext(&g, scan)) == END) {             /* Only one top-level choice. */
++              scan = OPERAND(scan);
++
++              /* Starting-point info. */
++              if (OP(scan) == EXACTLY)
++                      r->regstart = *OPERAND(scan);
++              else if (OP(scan) == BOL)
++                      r->reganch++;
++
++              /*
++               * If there's something expensive in the r.e., find the
++               * longest literal string that must appear and make it the
++               * regmust.  Resolve ties in favor of later strings, since
++               * the regstart check works with the beginning of the r.e.
++               * and avoiding duplication strengthens checking.  Not a
++               * strong reason, but sufficient in the absence of others.
++               */
++              if (flags&SPSTART) {
++                      longest = NULL;
++                      len = 0;
++                      for (; scan != NULL; scan = regnext(&g, scan))
++                              if (OP(scan) == EXACTLY && strlen(OPERAND(scan)) >= len) {
++                                      longest = OPERAND(scan);
++                                      len = strlen(OPERAND(scan));
++                              }
++                      r->regmust = longest;
++                      r->regmlen = len;
++              }
++      }
++
++      return(r);
++}
++
++/*
++ - reg - regular expression, i.e. main body or parenthesized thing
++ *
++ * Caller must absorb opening parenthesis.
++ *
++ * Combining parenthesis handling with the base level of regular expression
++ * is a trifle forced, but the need to tie the tails of the branches to what
++ * follows makes it hard to avoid.
++ */
++static char *
++reg(struct match_globals *g, int paren, int *flagp /* Parenthesized? */ )
++{
++      register char *ret;
++      register char *br;
++      register char *ender;
++      register int parno = 0; /* 0 makes gcc happy */
++      int flags;
++
++      *flagp = HASWIDTH;      /* Tentatively. */
++
++      /* Make an OPEN node, if parenthesized. */
++      if (paren) {
++              if (g->regnpar >= NSUBEXP)
++                      FAIL("too many ()");
++              parno = g->regnpar;
++              g->regnpar++;
++              ret = regnode(g, OPEN+parno);
++      } else
++              ret = NULL;
++
++      /* Pick up the branches, linking them together. */
++      br = regbranch(g, &flags);
++      if (br == NULL)
++              return(NULL);
++      if (ret != NULL)
++              regtail(g, ret, br);    /* OPEN -> first. */
++      else
++              ret = br;
++      if (!(flags&HASWIDTH))
++              *flagp &= ~HASWIDTH;
++      *flagp |= flags&SPSTART;
++      while (*g->regparse == '|') {
++              g->regparse++;
++              br = regbranch(g, &flags);
++              if (br == NULL)
++                      return(NULL);
++              regtail(g, ret, br);    /* BRANCH -> BRANCH. */
++              if (!(flags&HASWIDTH))
++                      *flagp &= ~HASWIDTH;
++              *flagp |= flags&SPSTART;
++      }
++
++      /* Make a closing node, and hook it on the end. */
++      ender = regnode(g, (paren) ? CLOSE+parno : END);        
++      regtail(g, ret, ender);
++
++      /* Hook the tails of the branches to the closing node. */
++      for (br = ret; br != NULL; br = regnext(g, br))
++              regoptail(g, br, ender);
++
++      /* Check for proper termination. */
++      if (paren && *g->regparse++ != ')') {
++              FAIL("unmatched ()");
++      } else if (!paren && *g->regparse != '\0') {
++              if (*g->regparse == ')') {
++                      FAIL("unmatched ()");
++              } else
++                      FAIL("junk on end");    /* "Can't happen". */
++              /* NOTREACHED */
++      }
++
++      return(ret);
++}
++
++/*
++ - regbranch - one alternative of an | operator
++ *
++ * Implements the concatenation operator.
++ */
++static char *
++regbranch(struct match_globals *g, int *flagp)
++{
++      register char *ret;
++      register char *chain;
++      register char *latest;
++      int flags;
++
++      *flagp = WORST;         /* Tentatively. */
++
++      ret = regnode(g, BRANCH);
++      chain = NULL;
++      while (*g->regparse != '\0' && *g->regparse != '|' && *g->regparse != ')') {
++              latest = regpiece(g, &flags);
++              if (latest == NULL)
++                      return(NULL);
++              *flagp |= flags&HASWIDTH;
++              if (chain == NULL)      /* First piece. */
++                      *flagp |= flags&SPSTART;
++              else
++                      regtail(g, chain, latest);
++              chain = latest;
++      }
++      if (chain == NULL)      /* Loop ran zero times. */
++              (void) regnode(g, NOTHING);
++
++      return(ret);
++}
++
++/*
++ - regpiece - something followed by possible [*+?]
++ *
++ * Note that the branching code sequences used for ? and the general cases
++ * of * and + are somewhat optimized:  they use the same NOTHING node as
++ * both the endmarker for their branch list and the body of the last branch.
++ * It might seem that this node could be dispensed with entirely, but the
++ * endmarker role is not redundant.
++ */
++static char *
++regpiece(struct match_globals *g, int *flagp)
++{
++      register char *ret;
++      register char op;
++      register char *next;
++      int flags;
++
++      ret = regatom(g, &flags);
++      if (ret == NULL)
++              return(NULL);
++
++      op = *g->regparse;
++      if (!ISMULT(op)) {
++              *flagp = flags;
++              return(ret);
++      }
++
++      if (!(flags&HASWIDTH) && op != '?')
++              FAIL("*+ operand could be empty");
++      *flagp = (op != '+') ? (WORST|SPSTART) : (WORST|HASWIDTH);
++
++      if (op == '*' && (flags&SIMPLE))
++              reginsert(g, STAR, ret);
++      else if (op == '*') {
++              /* Emit x* as (x&|), where & means "self". */
++              reginsert(g, BRANCH, ret);                      /* Either x */
++              regoptail(g, ret, regnode(g, BACK));            /* and loop */
++              regoptail(g, ret, ret);                 /* back */
++              regtail(g, ret, regnode(g, BRANCH));            /* or */
++              regtail(g, ret, regnode(g, NOTHING));           /* null. */
++      } else if (op == '+' && (flags&SIMPLE))
++              reginsert(g, PLUS, ret);
++      else if (op == '+') {
++              /* Emit x+ as x(&|), where & means "self". */
++              next = regnode(g, BRANCH);                      /* Either */
++              regtail(g, ret, next);
++              regtail(g, regnode(g, BACK), ret);              /* loop back */
++              regtail(g, next, regnode(g, BRANCH));           /* or */
++              regtail(g, ret, regnode(g, NOTHING));           /* null. */
++      } else if (op == '?') {
++              /* Emit x? as (x|) */
++              reginsert(g, BRANCH, ret);                      /* Either x */
++              regtail(g, ret, regnode(g, BRANCH));            /* or */
++              next = regnode(g, NOTHING);             /* null. */
++              regtail(g, ret, next);
++              regoptail(g, ret, next);
++      }
++      g->regparse++;
++      if (ISMULT(*g->regparse))
++              FAIL("nested *?+");
++
++      return(ret);
++}
++
++/*
++ - regatom - the lowest level
++ *
++ * Optimization:  gobbles an entire sequence of ordinary characters so that
++ * it can turn them into a single node, which is smaller to store and
++ * faster to run.  Backslashed characters are exceptions, each becoming a
++ * separate node; the code is simpler that way and it's not worth fixing.
++ */
++static char *
++regatom(struct match_globals *g, int *flagp)
++{
++      register char *ret;
++      int flags;
++
++      *flagp = WORST;         /* Tentatively. */
++
++      switch (*g->regparse++) {
++      case '^':
++              ret = regnode(g, BOL);
++              break;
++      case '$':
++              ret = regnode(g, EOL);
++              break;
++      case '.':
++              ret = regnode(g, ANY);
++              *flagp |= HASWIDTH|SIMPLE;
++              break;
++      case '[': {
++                      register int class;
++                      register int classend;
++
++                      if (*g->regparse == '^') {      /* Complement of range. */
++                              ret = regnode(g, ANYBUT);
++                              g->regparse++;
++                      } else
++                              ret = regnode(g, ANYOF);
++                      if (*g->regparse == ']' || *g->regparse == '-')
++                              regc(g, *g->regparse++);
++                      while (*g->regparse != '\0' && *g->regparse != ']') {
++                              if (*g->regparse == '-') {
++                                      g->regparse++;
++                                      if (*g->regparse == ']' || *g->regparse == '\0')
++                                              regc(g, '-');
++                                      else {
++                                              class = UCHARAT(g->regparse-2)+1;
++                                              classend = UCHARAT(g->regparse);
++                                              if (class > classend+1)
++                                                      FAIL("invalid [] range");
++                                              for (; class <= classend; class++)
++                                                      regc(g, class);
++                                              g->regparse++;
++                                      }
++                              } else
++                                      regc(g, *g->regparse++);
++                      }
++                      regc(g, '\0');
++                      if (*g->regparse != ']')
++                              FAIL("unmatched []");
++                      g->regparse++;
++                      *flagp |= HASWIDTH|SIMPLE;
++              }
++              break;
++      case '(':
++              ret = reg(g, 1, &flags);
++              if (ret == NULL)
++                      return(NULL);
++              *flagp |= flags&(HASWIDTH|SPSTART);
++              break;
++      case '\0':
++      case '|':
++      case ')':
++              FAIL("internal urp");   /* Supposed to be caught earlier. */
++              break;
++      case '?':
++      case '+':
++      case '*':
++              FAIL("?+* follows nothing");
++              break;
++      case '\\':
++              if (*g->regparse == '\0')
++                      FAIL("trailing \\");
++              ret = regnode(g, EXACTLY);
++              regc(g, *g->regparse++);
++              regc(g, '\0');
++              *flagp |= HASWIDTH|SIMPLE;
++              break;
++      default: {
++                      register int len;
++                      register char ender;
++
++                      g->regparse--;
++                      len = my_strcspn((const char *)g->regparse, (const char *)META);
++                      if (len <= 0)
++                              FAIL("internal disaster");
++                      ender = *(g->regparse+len);
++                      if (len > 1 && ISMULT(ender))
++                              len--;          /* Back off clear of ?+* operand. */
++                      *flagp |= HASWIDTH;
++                      if (len == 1)
++                              *flagp |= SIMPLE;
++                      ret = regnode(g, EXACTLY);
++                      while (len > 0) {
++                              regc(g, *g->regparse++);
++                              len--;
++                      }
++                      regc(g, '\0');
++              }
++              break;
++      }
++
++      return(ret);
++}
++
++/*
++ - regnode - emit a node
++ */
++static char *                 /* Location. */
++regnode(struct match_globals *g, char op)
++{
++      register char *ret;
++      register char *ptr;
++
++      ret = g->regcode;
++      if (ret == &g->regdummy) {
++              g->regsize += 3;
++              return(ret);
++      }
++
++      ptr = ret;
++      *ptr++ = op;
++      *ptr++ = '\0';          /* Null "next" pointer. */
++      *ptr++ = '\0';
++      g->regcode = ptr;
++
++      return(ret);
++}
++
++/*
++ - regc - emit (if appropriate) a byte of code
++ */
++static void
++regc(struct match_globals *g, char b)
++{
++      if (g->regcode != &g->regdummy)
++              *g->regcode++ = b;
++      else
++              g->regsize++;
++}
++
++/*
++ - reginsert - insert an operator in front of already-emitted operand
++ *
++ * Means relocating the operand.
++ */
++static void
++reginsert(struct match_globals *g, char op, char* opnd)
++{
++      register char *src;
++      register char *dst;
++      register char *place;
++
++      if (g->regcode == &g->regdummy) {
++              g->regsize += 3;
++              return;
++      }
++
++      src = g->regcode;
++      g->regcode += 3;
++      dst = g->regcode;
++      while (src > opnd)
++              *--dst = *--src;
++
++      place = opnd;           /* Op node, where operand used to be. */
++      *place++ = op;
++      *place++ = '\0';
++      *place++ = '\0';
++}
++
++/*
++ - regtail - set the next-pointer at the end of a node chain
++ */
++static void
++regtail(struct match_globals *g, char *p, char *val)
++{
++      register char *scan;
++      register char *temp;
++      register int offset;
++
++      if (p == &g->regdummy)
++              return;
++
++      /* Find last node. */
++      scan = p;
++      for (;;) {
++              temp = regnext(g, scan);
++              if (temp == NULL)
++                      break;
++              scan = temp;
++      }
++
++      if (OP(scan) == BACK)
++              offset = scan - val;
++      else
++              offset = val - scan;
++      *(scan+1) = (offset>>8)&0377;
++      *(scan+2) = offset&0377;
++}
++
++/*
++ - regoptail - regtail on operand of first argument; nop if operandless
++ */
++static void
++regoptail(struct match_globals *g, char *p, char *val)
++{
++      /* "Operandless" and "op != BRANCH" are synonymous in practice. */
++      if (p == NULL || p == &g->regdummy || OP(p) != BRANCH)
++              return;
++      regtail(g, OPERAND(p), val);
++}
++
++/*
++ * regexec and friends
++ */
++
++
++/*
++ * Forwards.
++ */
++STATIC int regtry(struct match_globals *g, regexp *prog, char *string);
++STATIC int regmatch(struct match_globals *g, char *prog);
++STATIC int regrepeat(struct match_globals *g, char *p);
++
++#ifdef DEBUG
++int regnarrate = 0;
++void regdump();
++STATIC char *regprop(char *op);
++#endif
++
++/*
++ - regexec - match a regexp against a string
++ */
++int
++regexec(regexp *prog, char *string)
++{
++      register char *s;
++      struct match_globals g;
++
++      /* Be paranoid... */
++      if (prog == NULL || string == NULL) {
++              printk("<3>Regexp: NULL parameter\n");
++              return(0);
++      }
++
++      /* Check validity of program. */
++      if (UCHARAT(prog->program) != MAGIC) {
++              printk("<3>Regexp: corrupted program\n");
++              return(0);
++      }
++
++      /* If there is a "must appear" string, look for it. */
++      if (prog->regmust != NULL) {
++              s = string;
++              while ((s = strchr(s, prog->regmust[0])) != NULL) {
++                      if (strncmp(s, prog->regmust, prog->regmlen) == 0)
++                              break;  /* Found it. */
++                      s++;
++              }
++              if (s == NULL)  /* Not present. */
++                      return(0);
++      }
++
++      /* Mark beginning of line for ^ . */
++      g.regbol = string;
++
++      /* Simplest case:  anchored match need be tried only once. */
++      if (prog->reganch)
++              return(regtry(&g, prog, string));
++
++      /* Messy cases:  unanchored match. */
++      s = string;
++      if (prog->regstart != '\0')
++              /* We know what char it must start with. */
++              while ((s = strchr(s, prog->regstart)) != NULL) {
++                      if (regtry(&g, prog, s))
++                              return(1);
++                      s++;
++              }
++      else
++              /* We don't -- general case. */
++              do {
++                      if (regtry(&g, prog, s))
++                              return(1);
++              } while (*s++ != '\0');
++
++      /* Failure. */
++      return(0);
++}
++
++/*
++ - regtry - try match at specific point
++ */
++static int                    /* 0 failure, 1 success */
++regtry(struct match_globals *g, regexp *prog, char *string)
++{
++      register int i;
++      register char **sp;
++      register char **ep;
++
++      g->reginput = string;
++      g->regstartp = prog->startp;
++      g->regendp = prog->endp;
++
++      sp = prog->startp;
++      ep = prog->endp;
++      for (i = NSUBEXP; i > 0; i--) {
++              *sp++ = NULL;
++              *ep++ = NULL;
++      }
++      if (regmatch(g, prog->program + 1)) {
++              prog->startp[0] = string;
++              prog->endp[0] = g->reginput;
++              return(1);
++      } else
++              return(0);
++}
++
++/*
++ - regmatch - main matching routine
++ *
++ * Conceptually the strategy is simple:  check to see whether the current
++ * node matches, call self recursively to see whether the rest matches,
++ * and then act accordingly.  In practice we make some effort to avoid
++ * recursion, in particular by going through "ordinary" nodes (that don't
++ * need to know whether the rest of the match failed) by a loop instead of
++ * by recursion.
++ */
++static int                    /* 0 failure, 1 success */
++regmatch(struct match_globals *g, char *prog)
++{
++      register char *scan = prog; /* Current node. */
++      char *next;                 /* Next node. */
++
++#ifdef DEBUG
++      if (scan != NULL && regnarrate)
++              fprintf(stderr, "%s(\n", regprop(scan));
++#endif
++      while (scan != NULL) {
++#ifdef DEBUG
++              if (regnarrate)
++                      fprintf(stderr, "%s...\n", regprop(scan));
++#endif
++              next = regnext(g, scan);
++
++              switch (OP(scan)) {
++              case BOL:
++                      if (g->reginput != g->regbol)
++                              return(0);
++                      break;
++              case EOL:
++                      if (*g->reginput != '\0')
++                              return(0);
++                      break;
++              case ANY:
++                      if (*g->reginput == '\0')
++                              return(0);
++                      g->reginput++;
++                      break;
++              case EXACTLY: {
++                              register int len;
++                              register char *opnd;
++
++                              opnd = OPERAND(scan);
++                              /* Inline the first character, for speed. */
++                              if (*opnd != *g->reginput)
++                                      return(0);
++                              len = strlen(opnd);
++                              if (len > 1 && strncmp(opnd, g->reginput, len) != 0)
++                                      return(0);
++                              g->reginput += len;
++                      }
++                      break;
++              case ANYOF:
++                      if (*g->reginput == '\0' || strchr(OPERAND(scan), *g->reginput) == NULL)
++                              return(0);
++                      g->reginput++;
++                      break;
++              case ANYBUT:
++                      if (*g->reginput == '\0' || strchr(OPERAND(scan), *g->reginput) != NULL)
++                              return(0);
++                      g->reginput++;
++                      break;
++              case NOTHING:
++              case BACK:
++                      break;
++              case OPEN+1:
++              case OPEN+2:
++              case OPEN+3:
++              case OPEN+4:
++              case OPEN+5:
++              case OPEN+6:
++              case OPEN+7:
++              case OPEN+8:
++              case OPEN+9: {
++                              register int no;
++                              register char *save;
++
++                              no = OP(scan) - OPEN;
++                              save = g->reginput;
++
++                              if (regmatch(g, next)) {
++                                      /*
++                                       * Don't set startp if some later
++                                       * invocation of the same parentheses
++                                       * already has.
++                                       */
++                                      if (g->regstartp[no] == NULL)
++                                              g->regstartp[no] = save;
++                                      return(1);
++                              } else
++                                      return(0);
++                      }
++                      break;
++              case CLOSE+1:
++              case CLOSE+2:
++              case CLOSE+3:
++              case CLOSE+4:
++              case CLOSE+5:
++              case CLOSE+6:
++              case CLOSE+7:
++              case CLOSE+8:
++              case CLOSE+9:
++                      {
++                              register int no;
++                              register char *save;
++
++                              no = OP(scan) - CLOSE;
++                              save = g->reginput;
++
++                              if (regmatch(g, next)) {
++                                      /*
++                                       * Don't set endp if some later
++                                       * invocation of the same parentheses
++                                       * already has.
++                                       */
++                                      if (g->regendp[no] == NULL)
++                                              g->regendp[no] = save;
++                                      return(1);
++                              } else
++                                      return(0);
++                      }
++                      break;
++              case BRANCH: {
++                              register char *save;
++
++                              if (OP(next) != BRANCH)         /* No choice. */
++                                      next = OPERAND(scan);   /* Avoid recursion. */
++                              else {
++                                      do {
++                                              save = g->reginput;
++                                              if (regmatch(g, OPERAND(scan)))
++                                                      return(1);
++                                              g->reginput = save;
++                                              scan = regnext(g, scan);
++                                      } while (scan != NULL && OP(scan) == BRANCH);
++                                      return(0);
++                                      /* NOTREACHED */
++                              }
++                      }
++                      break;
++              case STAR:
++              case PLUS: {
++                              register char nextch;
++                              register int no;
++                              register char *save;
++                              register int min;
++
++                              /*
++                               * Lookahead to avoid useless match attempts
++                               * when we know what character comes next.
++                               */
++                              nextch = '\0';
++                              if (OP(next) == EXACTLY)
++                                      nextch = *OPERAND(next);
++                              min = (OP(scan) == STAR) ? 0 : 1;
++                              save = g->reginput;
++                              no = regrepeat(g, OPERAND(scan));
++                              while (no >= min) {
++                                      /* If it could work, try it. */
++                                      if (nextch == '\0' || *g->reginput == nextch)
++                                              if (regmatch(g, next))
++                                                      return(1);
++                                      /* Couldn't or didn't -- back up. */
++                                      no--;
++                                      g->reginput = save + no;
++                              }
++                              return(0);
++                      }
++                      break;
++              case END:
++                      return(1);      /* Success! */
++                      break;
++              default:
++                      printk("<3>Regexp: memory corruption\n");
++                      return(0);
++                      break;
++              }
++
++              scan = next;
++      }
++
++      /*
++       * We get here only if there's trouble -- normally "case END" is
++       * the terminating point.
++       */
++      printk("<3>Regexp: corrupted pointers\n");
++      return(0);
++}
++
++/*
++ - regrepeat - repeatedly match something simple, report how many
++ */
++static int
++regrepeat(struct match_globals *g, char *p)
++{
++      register int count = 0;
++      register char *scan;
++      register char *opnd;
++
++      scan = g->reginput;
++      opnd = OPERAND(p);
++      switch (OP(p)) {
++      case ANY:
++              count = strlen(scan);
++              scan += count;
++              break;
++      case EXACTLY:
++              while (*opnd == *scan) {
++                      count++;
++                      scan++;
++              }
++              break;
++      case ANYOF:
++              while (*scan != '\0' && strchr(opnd, *scan) != NULL) {
++                      count++;
++                      scan++;
++              }
++              break;
++      case ANYBUT:
++              while (*scan != '\0' && strchr(opnd, *scan) == NULL) {
++                      count++;
++                      scan++;
++              }
++              break;
++      default:                /* Oh dear.  Called inappropriately. */
++              printk("<3>Regexp: internal foulup\n");
++              count = 0;      /* Best compromise. */
++              break;
++      }
++      g->reginput = scan;
++
++      return(count);
++}
++
++/*
++ - regnext - dig the "next" pointer out of a node
++ */
++static char*
++regnext(struct match_globals *g, char *p)
++{
++      register int offset;
++
++      if (p == &g->regdummy)
++              return(NULL);
++
++      offset = NEXT(p);
++      if (offset == 0)
++              return(NULL);
++
++      if (OP(p) == BACK)
++              return(p-offset);
++      else
++              return(p+offset);
++}
++
++#ifdef DEBUG
++
++STATIC char *regprop();
++
++/*
++ - regdump - dump a regexp onto stdout in vaguely comprehensible form
++ */
++void
++regdump(regexp *r)
++{
++      register char *s;
++      register char op = EXACTLY;     /* Arbitrary non-END op. */
++      register char *next;
++      /* extern char *strchr(); */
++
++
++      s = r->program + 1;
++      while (op != END) {     /* While that wasn't END last time... */
++              op = OP(s);
++              printf("%2d%s", s-r->program, regprop(s));      /* Where, what. */
++              next = regnext(s);
++              if (next == NULL)               /* Next ptr. */
++                      printf("(0)");
++              else
++                      printf("(%d)", (s-r->program)+(next-s));
++              s += 3;
++              if (op == ANYOF || op == ANYBUT || op == EXACTLY) {
++                      /* Literal string, where present. */
++                      while (*s != '\0') {
++                              putchar(*s);
++                              s++;
++                      }
++                      s++;
++              }
++              putchar('\n');
++      }
++
++      /* Header fields of interest. */
++      if (r->regstart != '\0')
++              printf("start `%c' ", r->regstart);
++      if (r->reganch)
++              printf("anchored ");
++      if (r->regmust != NULL)
++              printf("must have \"%s\"", r->regmust);
++      printf("\n");
++}
++
++/*
++ - regprop - printable representation of opcode
++ */
++static char *
++regprop(char *op)
++{
++#define BUFLEN 50
++      register char *p;
++      static char buf[BUFLEN];
++
++      strcpy(buf, ":");
++
++      switch (OP(op)) {
++      case BOL:
++              p = "BOL";
++              break;
++      case EOL:
++              p = "EOL";
++              break;
++      case ANY:
++              p = "ANY";
++              break;
++      case ANYOF:
++              p = "ANYOF";
++              break;
++      case ANYBUT:
++              p = "ANYBUT";
++              break;
++      case BRANCH:
++              p = "BRANCH";
++              break;
++      case EXACTLY:
++              p = "EXACTLY";
++              break;
++      case NOTHING:
++              p = "NOTHING";
++              break;
++      case BACK:
++              p = "BACK";
++              break;
++      case END:
++              p = "END";
++              break;
++      case OPEN+1:
++      case OPEN+2:
++      case OPEN+3:
++      case OPEN+4:
++      case OPEN+5:
++      case OPEN+6:
++      case OPEN+7:
++      case OPEN+8:
++      case OPEN+9:
++              snprintf(buf+strlen(buf),BUFLEN-strlen(buf), "OPEN%d", OP(op)-OPEN);
++              p = NULL;
++              break;
++      case CLOSE+1:
++      case CLOSE+2:
++      case CLOSE+3:
++      case CLOSE+4:
++      case CLOSE+5:
++      case CLOSE+6:
++      case CLOSE+7:
++      case CLOSE+8:
++      case CLOSE+9:
++              snprintf(buf+strlen(buf),BUFLEN-strlen(buf), "CLOSE%d", OP(op)-CLOSE);
++              p = NULL;
++              break;
++      case STAR:
++              p = "STAR";
++              break;
++      case PLUS:
++              p = "PLUS";
++              break;
++      default:
++              printk("<3>Regexp: corrupted opcode\n");
++              break;
++      }
++      if (p != NULL)
++              strncat(buf, p, BUFLEN-strlen(buf));
++      return(buf);
++}
++#endif
++
++
+--- /dev/null
++++ b/net/netfilter/regexp/regexp.h
+@@ -0,0 +1,41 @@
++/*
++ * Definitions etc. for regexp(3) routines.
++ *
++ * Caveat:  this is V8 regexp(3) [actually, a reimplementation thereof],
++ * not the System V one.
++ */
++
++#ifndef REGEXP_H
++#define REGEXP_H
++
++
++/*
++http://www.opensource.apple.com/darwinsource/10.3/expect-1/expect/expect.h ,
++which contains a version of this library, says:
++
++ *
++ * NSUBEXP must be at least 10, and no greater than 117 or the parser
++ * will not work properly.
++ *
++
++However, it looks rather like this library is limited to 10.  If you think
++otherwise, let us know.
++*/
++
++#define NSUBEXP  10
++typedef struct regexp {
++      char *startp[NSUBEXP];
++      char *endp[NSUBEXP];
++      char regstart;          /* Internal use only. */
++      char reganch;           /* Internal use only. */
++      char *regmust;          /* Internal use only. */
++      int regmlen;            /* Internal use only. */
++      char program[1];        /* Unwarranted chumminess with compiler. */
++} regexp;
++
++regexp * regcomp(char *exp, int *patternsize);
++int regexec(regexp *prog, char *string);
++void regsub(regexp *prog, char *source, char *dest);
++void regerror(char *s);
++
++#endif
+--- /dev/null
++++ b/net/netfilter/regexp/regmagic.h
+@@ -0,0 +1,5 @@
++/*
++ * The first byte of the regexp internal "program" is actually this magic
++ * number; the start node begins in the second byte.
++ */
++#define       MAGIC   0234
+--- /dev/null
++++ b/net/netfilter/regexp/regsub.c
+@@ -0,0 +1,95 @@
++/*
++ * regsub
++ * @(#)regsub.c       1.3 of 2 April 86
++ *
++ *    Copyright (c) 1986 by University of Toronto.
++ *    Written by Henry Spencer.  Not derived from licensed software.
++ *
++ *    Permission is granted to anyone to use this software for any
++ *    purpose on any computer system, and to redistribute it freely,
++ *    subject to the following restrictions:
++ *
++ *    1. The author is not responsible for the consequences of use of
++ *            this software, no matter how awful, even if they arise
++ *            from defects in it.
++ *
++ *    2. The origin of this software must not be misrepresented, either
++ *            by explicit claim or by omission.
++ *
++ *    3. Altered versions must be plainly marked as such, and must not
++ *            be misrepresented as being the original software.
++ *
++ *
++ * This code was modified by Ethan Sommer to work within the kernel
++ * (it now uses kmalloc etc..)
++ *
++ */
++#include "regexp.h"
++#include "regmagic.h"
++#include <linux/string.h>
++
++
++#ifndef CHARBITS
++#define       UCHARAT(p)      ((int)*(unsigned char *)(p))
++#else
++#define       UCHARAT(p)      ((int)*(p)&CHARBITS)
++#endif
++
++#if 0
++//void regerror(char * s)
++//{
++//        printk("regexp(3): %s", s);
++//        /* NOTREACHED */
++//}
++#endif
++
++/*
++ - regsub - perform substitutions after a regexp match
++ */
++void
++regsub(regexp * prog, char * source, char * dest)
++{
++      register char *src;
++      register char *dst;
++      register char c;
++      register int no;
++      register int len;
++      
++      /* Not necessary and gcc doesn't like it -MLS */
++      /*extern char *strncpy();*/
++
++      if (prog == NULL || source == NULL || dest == NULL) {
++              regerror("NULL parm to regsub");
++              return;
++      }
++      if (UCHARAT(prog->program) != MAGIC) {
++              regerror("damaged regexp fed to regsub");
++              return;
++      }
++
++      src = source;
++      dst = dest;
++      while ((c = *src++) != '\0') {
++              if (c == '&')
++                      no = 0;
++              else if (c == '\\' && '0' <= *src && *src <= '9')
++                      no = *src++ - '0';
++              else
++                      no = -1;
++
++              if (no < 0) {   /* Ordinary character. */
++                      if (c == '\\' && (*src == '\\' || *src == '&'))
++                              c = *src++;
++                      *dst++ = c;
++              } else if (prog->startp[no] != NULL && prog->endp[no] != NULL) {
++                      len = prog->endp[no] - prog->startp[no];
++                      (void) strncpy(dst, prog->startp[no], len);
++                      dst += len;
++                      if (len != 0 && *(dst-1) == '\0') {     /* strncpy hit NUL. */
++                              regerror("damaged match string");
++                              return;
++                      }
++              }
++      }
++      *dst++ = '\0';
++}
+--- a/net/netfilter/nf_conntrack_core.c
++++ b/net/netfilter/nf_conntrack_core.c
+@@ -213,6 +213,14 @@ destroy_conntrack(struct nf_conntrack *n
+        * too. */
+       nf_ct_remove_expectations(ct);
+ 
++      #if defined(CONFIG_NETFILTER_XT_MATCH_LAYER7) || defined(CONFIG_NETFILTER_XT_MATCH_LAYER7_MODULE)
++      if(ct->layer7.app_proto)
++              kfree(ct->layer7.app_proto);
++      if(ct->layer7.app_data)
++      kfree(ct->layer7.app_data);
++      #endif
++
++
+       /* We overload first tuple to link into unconfirmed list. */
+       if (!nf_ct_is_confirmed(ct)) {
+               BUG_ON(hlist_nulls_unhashed(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnnode));
+--- a/net/netfilter/nf_conntrack_standalone.c
++++ b/net/netfilter/nf_conntrack_standalone.c
+@@ -239,6 +239,12 @@ static int ct_seq_show(struct seq_file *
+       if (ct_show_delta_time(s, ct))
+               goto release;
+ 
++#if defined(CONFIG_NETFILTER_XT_MATCH_LAYER7) || defined(CONFIG_NETFILTER_XT_MATCH_LAYER7_MODULE)
++      if(ct->layer7.app_proto &&
++           seq_printf(s, "l7proto=%s ", ct->layer7.app_proto))
++              return -ENOSPC;
++#endif
++
+       if (seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use)))
+               goto release;
+ 
+--- a/include/net/netfilter/nf_conntrack.h
++++ b/include/net/netfilter/nf_conntrack.h
+@@ -134,6 +134,22 @@ struct nf_conn {
+       struct net *ct_net;
+ #endif
+ 
++#if defined(CONFIG_NETFILTER_XT_MATCH_LAYER7) || \
++    defined(CONFIG_NETFILTER_XT_MATCH_LAYER7_MODULE)
++      struct {
++              /*
++               * e.g. "http". NULL before decision. "unknown" after decision
++               * if no match.
++               */
++              char *app_proto;
++              /*
++               * application layer data so far. NULL after match decision.
++               */
++              char *app_data;
++              unsigned int app_data_len;
++      } layer7;
++#endif
++
+       /* Storage reserved for other modules, must be the last member */
+       union nf_conntrack_proto proto;
+ };
+--- /dev/null
++++ b/include/linux/netfilter/xt_layer7.h
+@@ -0,0 +1,13 @@
++#ifndef _XT_LAYER7_H
++#define _XT_LAYER7_H
++
++#define MAX_PATTERN_LEN 8192
++#define MAX_PROTOCOL_LEN 256
++
++struct xt_layer7_info {
++    char protocol[MAX_PROTOCOL_LEN];
++    char pattern[MAX_PATTERN_LEN];
++    u_int8_t invert;
++};
++
++#endif /* _XT_LAYER7_H */

diff --git a/target/linux/generic/patches-3.0/601-netfilter_layer7_pktmatch.patch b/target/linux/generic/patches-3.0/601-netfilter_layer7_pktmatch.patch
new file mode 100644 (file)
index 0000000..f65e301
--- /dev/null
+++ b/target/linux/generic/patches-3.0/601-netfilter_layer7_pktmatch.patch
@@ -0,0 +1,108 @@
+--- a/include/linux/netfilter/xt_layer7.h
++++ b/include/linux/netfilter/xt_layer7.h
+@@ -8,6 +8,7 @@ struct xt_layer7_info {
+     char protocol[MAX_PROTOCOL_LEN];
+     char pattern[MAX_PATTERN_LEN];
+     u_int8_t invert;
++    u_int8_t pkt;
+ };
+ 
+ #endif /* _XT_LAYER7_H */
+--- a/net/netfilter/xt_layer7.c
++++ b/net/netfilter/xt_layer7.c
+@@ -314,33 +314,35 @@ static int match_no_append(struct nf_con
+ }
+ 
+ /* add the new app data to the conntrack.  Return number of bytes added. */
+-static int add_data(struct nf_conn * master_conntrack,
+-                    char * app_data, int appdatalen)
++static int add_datastr(char *target, int offset, char *app_data, int len)
+ {
+       int length = 0, i;
+-      int oldlength = master_conntrack->layer7.app_data_len;
+-
+-      /* This is a fix for a race condition by Deti Fliegl. However, I'm not 
+-         clear on whether the race condition exists or whether this really 
+-         fixes it.  I might just be being dense... Anyway, if it's not really 
+-         a fix, all it does is waste a very small amount of time. */
+-      if(!master_conntrack->layer7.app_data) return 0;
++      if (!target) return 0;
+ 
+       /* Strip nulls. Make everything lower case (our regex lib doesn't
+       do case insensitivity).  Add it to the end of the current data. */
+-      for(i = 0; i < maxdatalen-oldlength-1 &&
+-                 i < appdatalen; i++) {
++      for(i = 0; i < maxdatalen-offset-1 && i < len; i++) {
+               if(app_data[i] != '\0') {
+                       /* the kernel version of tolower mungs 'upper ascii' */
+-                      master_conntrack->layer7.app_data[length+oldlength] =
++                      target[length+offset] =
+                               isascii(app_data[i])? 
+                                       tolower(app_data[i]) : app_data[i];
+                       length++;
+               }
+       }
++      target[length+offset] = '\0';
++
++      return length;
++}
++
++/* add the new app data to the conntrack.  Return number of bytes added. */
++static int add_data(struct nf_conn * master_conntrack,
++                    char * app_data, int appdatalen)
++{
++      int length;
+ 
+-      master_conntrack->layer7.app_data[length+oldlength] = '\0';
+-      master_conntrack->layer7.app_data_len = length + oldlength;
++      length = add_datastr(master_conntrack->layer7.app_data, master_conntrack->layer7.app_data_len, app_data, appdatalen);
++      master_conntrack->layer7.app_data_len += length;
+ 
+       return length;
+ }
+@@ -438,7 +440,7 @@ match(const struct sk_buff *skbin,
+ 
+       enum ip_conntrack_info master_ctinfo, ctinfo;
+       struct nf_conn *master_conntrack, *conntrack;
+-      unsigned char * app_data;
++      unsigned char *app_data, *tmp_data;
+       unsigned int pattern_result, appdatalen;
+       regexp * comppattern;
+ 
+@@ -466,8 +468,8 @@ match(const struct sk_buff *skbin,
+               master_conntrack = master_ct(master_conntrack);
+ 
+       /* if we've classified it or seen too many packets */
+-      if(total_acct_packets(master_conntrack) > num_packets ||
+-         master_conntrack->layer7.app_proto) {
++      if(!info->pkt && (total_acct_packets(master_conntrack) > num_packets ||
++         master_conntrack->layer7.app_proto)) {
+ 
+               pattern_result = match_no_append(conntrack, master_conntrack, 
+                                                ctinfo, master_ctinfo, info);
+@@ -500,6 +502,25 @@ match(const struct sk_buff *skbin,
+       /* the return value gets checked later, when we're ready to use it */
+       comppattern = compile_and_cache(info->pattern, info->protocol);
+ 
++      if (info->pkt) {
++              tmp_data = kmalloc(maxdatalen, GFP_ATOMIC);
++              if(!tmp_data){
++                      if (net_ratelimit())
++                              printk(KERN_ERR "layer7: out of memory in match, bailing.\n");
++                      return info->invert;
++              }
++
++              tmp_data[0] = '\0';
++              add_datastr(tmp_data, 0, app_data, appdatalen);
++              pattern_result = ((comppattern && regexec(comppattern, tmp_data)) ? 1 : 0);
++
++              kfree(tmp_data);
++              tmp_data = NULL;
++              spin_unlock_bh(&l7_lock);
++
++              return (pattern_result ^ info->invert);
++      }
++
+       /* On the first packet of a connection, allocate space for app data */
+       if(total_acct_packets(master_conntrack) == 1 && !skb->cb[0] && 
+          !master_conntrack->layer7.app_data){

diff --git a/target/linux/generic/patches-3.0/602-netfilter_layer7_match.patch b/target/linux/generic/patches-3.0/602-netfilter_layer7_match.patch
new file mode 100644 (file)
index 0000000..b2e48c8
--- /dev/null
+++ b/target/linux/generic/patches-3.0/602-netfilter_layer7_match.patch
@@ -0,0 +1,51 @@
+--- a/net/netfilter/xt_layer7.c
++++ b/net/netfilter/xt_layer7.c
+@@ -415,7 +415,9 @@ static int layer7_write_proc(struct file
+ }
+ 
+ static bool
+-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35)
++match(const struct sk_buff *skbin, struct xt_action_param *par)
++#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+ match(const struct sk_buff *skbin, const struct xt_match_param *par)
+ #else
+ match(const struct sk_buff *skbin,
+@@ -597,14 +599,19 @@ match(const struct sk_buff *skbin,
+ }
+ 
+ // load nf_conntrack_ipv4
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35)
++static int
++#else
++static bool
++#endif
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+-static bool check(const struct xt_mtchk_param *par)
++check(const struct xt_mtchk_param *par)
+ {
+         if (nf_ct_l3proto_try_module_get(par->match->family) < 0) {
+                 printk(KERN_WARNING "can't load conntrack support for "
+                                     "proto=%d\n", par->match->family);
+ #else
+-static bool check(const char *tablename, const void *inf,
++check(const char *tablename, const void *inf,
+                const struct xt_match *match, void *matchinfo,
+                unsigned int hook_mask)
+ {
+@@ -612,9 +619,15 @@ static bool check(const char *tablename,
+                 printk(KERN_WARNING "can't load conntrack support for "
+                                     "proto=%d\n", match->family);
+ #endif
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35)
++              return -EINVAL;
++      }
++      return 0;
++#else
+                 return 0;
+         }
+       return 1;
++#endif
+ }
+ 
+ 

diff --git a/target/linux/generic/patches-3.0/603-netfilter_layer7_2.6.36_fix.patch b/target/linux/generic/patches-3.0/603-netfilter_layer7_2.6.36_fix.patch
new file mode 100644 (file)
index 0000000..9f4c310
--- /dev/null
+++ b/target/linux/generic/patches-3.0/603-netfilter_layer7_2.6.36_fix.patch
@@ -0,0 +1,61 @@
+--- a/net/netfilter/Kconfig
++++ b/net/netfilter/Kconfig
+@@ -832,6 +832,27 @@ config NETFILTER_XT_MATCH_IPVS
+ 
+         If unsure, say N.
+ 
++config NETFILTER_XT_MATCH_LAYER7
++      tristate '"layer7" match support'
++      depends on EXPERIMENTAL
++      depends on NETFILTER_XTABLES
++      depends on NETFILTER_ADVANCED
++      depends on NF_CONNTRACK
++      help
++        Say Y if you want to be able to classify connections (and their
++        packets) based on regular expression matching of their application
++        layer data.   This is one way to classify applications such as
++        peer-to-peer filesharing systems that do not always use the same
++        port.
++
++        To compile it as a module, choose M here.  If unsure, say N.
++
++config NETFILTER_XT_MATCH_LAYER7_DEBUG
++      bool 'Layer 7 debugging output'
++      depends on NETFILTER_XT_MATCH_LAYER7
++      help
++        Say Y to get lots of debugging output.
++
+ config NETFILTER_XT_MATCH_LENGTH
+       tristate '"length" match support'
+       depends on NETFILTER_ADVANCED
+@@ -1018,26 +1039,11 @@ config NETFILTER_XT_MATCH_STATE
+ 
+         To compile it as a module, choose M here.  If unsure, say N.
+ 
+-config NETFILTER_XT_MATCH_LAYER7
+-      tristate '"layer7" match support'
+-      depends on NETFILTER_XTABLES
+-      depends on EXPERIMENTAL && (IP_NF_CONNTRACK || NF_CONNTRACK)
+-       depends on NETFILTER_ADVANCED
+-      help
+-        Say Y if you want to be able to classify connections (and their
+-        packets) based on regular expression matching of their application
+-        layer data.   This is one way to classify applications such as
+-        peer-to-peer filesharing systems that do not always use the same
+-        port.
+-
+-        To compile it as a module, choose M here.  If unsure, say N.
+-
+ config NETFILTER_XT_MATCH_LAYER7_DEBUG
+-        bool 'Layer 7 debugging output'
+-        depends on NETFILTER_XT_MATCH_LAYER7
+-        help
+-          Say Y to get lots of debugging output.
+-
++      bool 'Layer 7 debugging output'
++      depends on NETFILTER_XT_MATCH_LAYER7
++      help
++        Say Y to get lots of debugging output.
+ 
+ config NETFILTER_XT_MATCH_STATISTIC
+       tristate '"statistic" match support'

diff --git a/target/linux/generic/patches-3.0/604-netfilter_cisco_794x_iphone.patch b/target/linux/generic/patches-3.0/604-netfilter_cisco_794x_iphone.patch
new file mode 100644 (file)
index 0000000..662a499
--- /dev/null
+++ b/target/linux/generic/patches-3.0/604-netfilter_cisco_794x_iphone.patch
@@ -0,0 +1,118 @@
+--- a/include/linux/netfilter/nf_conntrack_sip.h
++++ b/include/linux/netfilter/nf_conntrack_sip.h
+@@ -2,12 +2,15 @@
+ #define __NF_CONNTRACK_SIP_H__
+ #ifdef __KERNEL__
+ 
++#include <linux/types.h>
++
+ #define SIP_PORT      5060
+ #define SIP_TIMEOUT   3600
+ 
+ struct nf_ct_sip_master {
+       unsigned int    register_cseq;
+       unsigned int    invite_cseq;
++      __be16          forced_dport;
+ };
+ 
+ enum sip_expectation_classes {
+--- a/net/ipv4/netfilter/nf_nat_sip.c
++++ b/net/ipv4/netfilter/nf_nat_sip.c
+@@ -73,6 +73,7 @@ static int map_addr(struct sk_buff *skb,
+       enum ip_conntrack_info ctinfo;
+       struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
+       enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
++      struct nf_conn_help *help = nfct_help(ct);
+       char buffer[sizeof("nnn.nnn.nnn.nnn:nnnnn")];
+       unsigned int buflen;
+       __be32 newaddr;
+@@ -85,7 +86,8 @@ static int map_addr(struct sk_buff *skb,
+       } else if (ct->tuplehash[dir].tuple.dst.u3.ip == addr->ip &&
+                  ct->tuplehash[dir].tuple.dst.u.udp.port == port) {
+               newaddr = ct->tuplehash[!dir].tuple.src.u3.ip;
+-              newport = ct->tuplehash[!dir].tuple.src.u.udp.port;
++              newport = help->help.ct_sip_info.forced_dport ? :
++                        ct->tuplehash[!dir].tuple.src.u.udp.port;
+       } else
+               return 1;
+ 
+@@ -121,6 +123,7 @@ static unsigned int ip_nat_sip(struct sk
+       enum ip_conntrack_info ctinfo;
+       struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
+       enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
++      struct nf_conn_help *help = nfct_help(ct);
+       unsigned int coff, matchoff, matchlen;
+       enum sip_header_types hdr;
+       union nf_inet_addr addr;
+@@ -229,6 +232,20 @@ next:
+           !map_sip_addr(skb, dataoff, dptr, datalen, SIP_HDR_TO))
+               return NF_DROP;
+ 
++      /* Mangle destination port for Cisco phones, then fix up checksums */
++      if (dir == IP_CT_DIR_REPLY && help->help.ct_sip_info.forced_dport) {
++              struct udphdr *uh;
++
++              if (!skb_make_writable(skb, skb->len))
++                      return NF_DROP;
++
++              uh = (struct udphdr *)(skb->data + ip_hdrlen(skb));
++              uh->dest = help->help.ct_sip_info.forced_dport;
++
++              if (!nf_nat_mangle_udp_packet(skb, ct, ctinfo, 0, 0, NULL, 0))
++                      return NF_DROP;
++      }
++
+       return NF_ACCEPT;
+ }
+ 
+@@ -280,8 +297,10 @@ static unsigned int ip_nat_sip_expect(st
+       enum ip_conntrack_info ctinfo;
+       struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
+       enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
++      struct nf_conn_help *help = nfct_help(ct);
+       __be32 newip;
+       u_int16_t port;
++      __be16 srcport;
+       char buffer[sizeof("nnn.nnn.nnn.nnn:nnnnn")];
+       unsigned buflen;
+ 
+@@ -294,8 +313,9 @@ static unsigned int ip_nat_sip_expect(st
+       /* If the signalling port matches the connection's source port in the
+        * original direction, try to use the destination port in the opposite
+        * direction. */
+-      if (exp->tuple.dst.u.udp.port ==
+-          ct->tuplehash[dir].tuple.src.u.udp.port)
++      srcport = help->help.ct_sip_info.forced_dport ? :
++                ct->tuplehash[dir].tuple.src.u.udp.port;
++      if (exp->tuple.dst.u.udp.port == srcport)
+               port = ntohs(ct->tuplehash[!dir].tuple.dst.u.udp.port);
+       else
+               port = ntohs(exp->tuple.dst.u.udp.port);
+--- a/net/netfilter/nf_conntrack_sip.c
++++ b/net/netfilter/nf_conntrack_sip.c
+@@ -1363,8 +1363,25 @@ static int process_sip_request(struct sk
+ {
+       enum ip_conntrack_info ctinfo;
+       struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
++      struct nf_conn_help *help = nfct_help(ct);
++      enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
+       unsigned int matchoff, matchlen;
+       unsigned int cseq, i;
++      union nf_inet_addr addr;
++      __be16 port;
++
++      /* Many Cisco IP phones use a high source port for SIP requests, but
++       * listen for the response on port 5060.  If we are the local
++       * router for one of these phones, save the port number from the
++       * Via: header so that nf_nat_sip can redirect the responses to
++       * the correct port.
++       */
++      if (ct_sip_parse_header_uri(ct, *dptr, NULL, *datalen,
++                                  SIP_HDR_VIA_UDP, NULL, &matchoff,
++                                  &matchlen, &addr, &port) > 0 &&
++          port != ct->tuplehash[dir].tuple.src.u.udp.port &&
++          nf_inet_addr_cmp(&addr, &ct->tuplehash[dir].tuple.src.u3))
++              help->help.ct_sip_info.forced_dport = port;
+ 
+       for (i = 0; i < ARRAY_SIZE(sip_handlers); i++) {
+               const struct sip_handler *handler;

diff --git a/target/linux/generic/patches-3.0/605-netfilter_rtsp.patch b/target/linux/generic/patches-3.0/605-netfilter_rtsp.patch
new file mode 100644 (file)
index 0000000..ead213a
--- /dev/null
+++ b/target/linux/generic/patches-3.0/605-netfilter_rtsp.patch
@@ -0,0 +1,1366 @@
+--- /dev/null
++++ b/include/linux/netfilter/nf_conntrack_rtsp.h
+@@ -0,0 +1,63 @@
++/*
++ * RTSP extension for IP connection tracking.
++ * (C) 2003 by Tom Marshall <tmarshall at real.com>
++ * based on ip_conntrack_irc.h
++ *
++ *      This program is free software; you can redistribute it and/or
++ *      modify it under the terms of the GNU General Public License
++ *      as published by the Free Software Foundation; either version
++ *      2 of the License, or (at your option) any later version.
++ */
++#ifndef _IP_CONNTRACK_RTSP_H
++#define _IP_CONNTRACK_RTSP_H
++
++//#define IP_NF_RTSP_DEBUG 1
++#define IP_NF_RTSP_VERSION "0.6.21"
++
++#ifdef __KERNEL__
++/* port block types */
++typedef enum {
++    pb_single,  /* client_port=x */
++    pb_range,   /* client_port=x-y */
++    pb_discon   /* client_port=x/y (rtspbis) */
++} portblock_t;
++
++/* We record seq number and length of rtsp headers here, all in host order. */
++
++/*
++ * This structure is per expected connection.  It is a member of struct
++ * ip_conntrack_expect.  The TCP SEQ for the conntrack expect is stored
++ * there and we are expected to only store the length of the data which
++ * needs replaced.  If a packet contains multiple RTSP messages, we create
++ * one expected connection per message.
++ *
++ * We use these variables to mark the entire header block.  This may seem
++ * like overkill, but the nature of RTSP requires it.  A header may appear
++ * multiple times in a message.  We must treat two Transport headers the
++ * same as one Transport header with two entries.
++ */
++struct ip_ct_rtsp_expect
++{
++    u_int32_t   len;        /* length of header block */
++    portblock_t pbtype;     /* Type of port block that was requested */
++    u_int16_t   loport;     /* Port that was requested, low or first */
++    u_int16_t   hiport;     /* Port that was requested, high or second */
++#if 0
++    uint        method;     /* RTSP method */
++    uint        cseq;       /* CSeq from request */
++#endif
++};
++
++extern unsigned int (*nf_nat_rtsp_hook)(struct sk_buff *skb,
++                               enum ip_conntrack_info ctinfo,
++                               unsigned int matchoff, unsigned int matchlen,
++                               struct ip_ct_rtsp_expect *prtspexp,
++                               struct nf_conntrack_expect *exp);
++
++extern void (*nf_nat_rtsp_hook_expectfn)(struct nf_conn *ct, struct nf_conntrack_expect *exp);
++
++#define RTSP_PORT   554
++
++#endif /* __KERNEL__ */
++
++#endif /* _IP_CONNTRACK_RTSP_H */
+--- /dev/null
++++ b/include/linux/netfilter_helpers.h
+@@ -0,0 +1,133 @@
++/*
++ * Helpers for netfiler modules.  This file provides implementations for basic
++ * functions such as strncasecmp(), etc.
++ *
++ * gcc will warn for defined but unused functions, so we only include the
++ * functions requested.  The following macros are used:
++ *   NF_NEED_STRNCASECMP        nf_strncasecmp()
++ *   NF_NEED_STRTOU16           nf_strtou16()
++ *   NF_NEED_STRTOU32           nf_strtou32()
++ */
++#ifndef _NETFILTER_HELPERS_H
++#define _NETFILTER_HELPERS_H
++
++/* Only include these functions for kernel code. */
++#ifdef __KERNEL__
++
++#include <linux/ctype.h>
++#define iseol(c) ( (c) == '\r' || (c) == '\n' )
++
++/*
++ * The standard strncasecmp()
++ */
++#ifdef NF_NEED_STRNCASECMP
++static int
++nf_strncasecmp(const char* s1, const char* s2, u_int32_t len)
++{
++    if (s1 == NULL || s2 == NULL)
++    {
++        if (s1 == NULL && s2 == NULL)
++        {
++            return 0;
++        }
++        return (s1 == NULL) ? -1 : 1;
++    }
++    while (len > 0 && tolower(*s1) == tolower(*s2))
++    {
++        len--;
++        s1++;
++        s2++;
++    }
++    return ( (len == 0) ? 0 : (tolower(*s1) - tolower(*s2)) );
++}
++#endif /* NF_NEED_STRNCASECMP */
++
++/*
++ * Parse a string containing a 16-bit unsigned integer.
++ * Returns the number of chars used, or zero if no number is found.
++ */
++#ifdef NF_NEED_STRTOU16
++static int
++nf_strtou16(const char* pbuf, u_int16_t* pval)
++{
++    int n = 0;
++
++    *pval = 0;
++    while (isdigit(pbuf[n]))
++    {
++        *pval = (*pval * 10) + (pbuf[n] - '0');
++        n++;
++    }
++
++    return n;
++}
++#endif /* NF_NEED_STRTOU16 */
++
++/*
++ * Parse a string containing a 32-bit unsigned integer.
++ * Returns the number of chars used, or zero if no number is found.
++ */
++#ifdef NF_NEED_STRTOU32
++static int
++nf_strtou32(const char* pbuf, u_int32_t* pval)
++{
++    int n = 0;
++
++    *pval = 0;
++    while (pbuf[n] >= '0' && pbuf[n] <= '9')
++    {
++        *pval = (*pval * 10) + (pbuf[n] - '0');
++        n++;
++    }
++
++    return n;
++}
++#endif /* NF_NEED_STRTOU32 */
++
++/*
++ * Given a buffer and length, advance to the next line and mark the current
++ * line.
++ */
++#ifdef NF_NEED_NEXTLINE
++static int
++nf_nextline(char* p, uint len, uint* poff, uint* plineoff, uint* plinelen)
++{
++    uint    off = *poff;
++    uint    physlen = 0;
++
++    if (off >= len)
++    {
++        return 0;
++    }
++
++    while (p[off] != '\n')
++    {
++        if (len-off <= 1)
++        {
++            return 0;
++        }
++
++        physlen++;
++        off++;
++    }
++
++    /* if we saw a crlf, physlen needs adjusted */
++    if (physlen > 0 && p[off] == '\n' && p[off-1] == '\r')
++    {
++        physlen--;
++    }
++
++    /* advance past the newline */
++    off++;
++
++    *plineoff = *poff;
++    *plinelen = physlen;
++    *poff = off;
++
++    return 1;
++}
++#endif /* NF_NEED_NEXTLINE */
++
++#endif /* __KERNEL__ */
++
++#endif /* _NETFILTER_HELPERS_H */
+--- /dev/null
++++ b/include/linux/netfilter_mime.h
+@@ -0,0 +1,89 @@
++/*
++ * MIME functions for netfilter modules.  This file provides implementations
++ * for basic MIME parsing.  MIME headers are used in many protocols, such as
++ * HTTP, RTSP, SIP, etc.
++ *
++ * gcc will warn for defined but unused functions, so we only include the
++ * functions requested.  The following macros are used:
++ *   NF_NEED_MIME_NEXTLINE      nf_mime_nextline()
++ */
++#ifndef _NETFILTER_MIME_H
++#define _NETFILTER_MIME_H
++
++/* Only include these functions for kernel code. */
++#ifdef __KERNEL__
++
++#include <linux/ctype.h>
++
++/*
++ * Given a buffer and length, advance to the next line and mark the current
++ * line.  If the current line is empty, *plinelen will be set to zero.  If
++ * not, it will be set to the actual line length (including CRLF).
++ *
++ * 'line' in this context means logical line (includes LWS continuations).
++ * Returns 1 on success, 0 on failure.
++ */
++#ifdef NF_NEED_MIME_NEXTLINE
++static int
++nf_mime_nextline(char* p, uint len, uint* poff, uint* plineoff, uint* plinelen)
++{
++    uint    off = *poff;
++    uint    physlen = 0;
++    int     is_first_line = 1;
++
++    if (off >= len)
++    {
++        return 0;
++    }
++
++    do
++    {
++        while (p[off] != '\n')
++        {
++            if (len-off <= 1)
++            {
++                return 0;
++            }
++
++            physlen++;
++            off++;
++        }
++
++        /* if we saw a crlf, physlen needs adjusted */
++        if (physlen > 0 && p[off] == '\n' && p[off-1] == '\r')
++        {
++            physlen--;
++        }
++
++        /* advance past the newline */
++        off++;
++
++        /* check for an empty line */
++        if (physlen == 0)
++        {
++            break;
++        }
++
++        /* check for colon on the first physical line */
++        if (is_first_line)
++        {
++            is_first_line = 0;
++            if (memchr(p+(*poff), ':', physlen) == NULL)
++            {
++                return 0;
++            }
++        }
++    }
++    while (p[off] == ' ' || p[off] == '\t');
++
++    *plineoff = *poff;
++    *plinelen = (physlen == 0) ? 0 : (off - *poff);
++    *poff = off;
++
++    return 1;
++}
++#endif /* NF_NEED_MIME_NEXTLINE */
++
++#endif /* __KERNEL__ */
++
++#endif /* _NETFILTER_MIME_H */
+--- a/net/ipv4/netfilter/Makefile
++++ b/net/ipv4/netfilter/Makefile
+@@ -26,6 +26,7 @@ obj-$(CONFIG_NF_NAT_AMANDA) += nf_nat_am
+ obj-$(CONFIG_NF_NAT_FTP) += nf_nat_ftp.o
+ obj-$(CONFIG_NF_NAT_H323) += nf_nat_h323.o
+ obj-$(CONFIG_NF_NAT_IRC) += nf_nat_irc.o
++obj-$(CONFIG_NF_NAT_RTSP) += nf_nat_rtsp.o
+ obj-$(CONFIG_NF_NAT_PPTP) += nf_nat_pptp.o
+ obj-$(CONFIG_NF_NAT_SIP) += nf_nat_sip.o
+ obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o
+--- a/net/netfilter/Kconfig
++++ b/net/netfilter/Kconfig
+@@ -289,6 +289,16 @@ config NF_CONNTRACK_TFTP
+ 
+         To compile it as a module, choose M here.  If unsure, say N.
+ 
++config NF_CONNTRACK_RTSP
++      tristate "RTSP protocol support"
++      depends on NF_CONNTRACK
++      help
++              Support the RTSP protocol.  This allows UDP transports to be setup
++              properly, including RTP and RDT.
++
++              If you want to compile it as a module, say 'M' here and read
++              Documentation/modules.txt.  If unsure, say 'Y'.
++
+ config NF_CT_NETLINK
+       tristate 'Connection tracking netlink interface'
+       select NETFILTER_NETLINK
+--- a/net/netfilter/Makefile
++++ b/net/netfilter/Makefile
+@@ -36,6 +36,7 @@ obj-$(CONFIG_NF_CONNTRACK_PPTP) += nf_co
+ obj-$(CONFIG_NF_CONNTRACK_SANE) += nf_conntrack_sane.o
+ obj-$(CONFIG_NF_CONNTRACK_SIP) += nf_conntrack_sip.o
+ obj-$(CONFIG_NF_CONNTRACK_TFTP) += nf_conntrack_tftp.o
++obj-$(CONFIG_NF_CONNTRACK_RTSP) += nf_conntrack_rtsp.o
+ 
+ # transparent proxy support
+ obj-$(CONFIG_NETFILTER_TPROXY) += nf_tproxy_core.o
+--- a/net/ipv4/netfilter/Kconfig
++++ b/net/ipv4/netfilter/Kconfig
+@@ -248,6 +248,11 @@ config NF_NAT_IRC
+       depends on NF_CONNTRACK && NF_NAT
+       default NF_NAT && NF_CONNTRACK_IRC
+ 
++config NF_NAT_RTSP
++      tristate
++      depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT
++      default NF_NAT && NF_CONNTRACK_RTSP
++
+ config NF_NAT_TFTP
+       tristate
+       depends on NF_CONNTRACK && NF_NAT
+--- /dev/null
++++ b/net/netfilter/nf_conntrack_rtsp.c
+@@ -0,0 +1,517 @@
++/*
++ * RTSP extension for IP connection tracking
++ * (C) 2003 by Tom Marshall <tmarshall at real.com>
++ * based on ip_conntrack_irc.c
++ *
++ *      This program is free software; you can redistribute it and/or
++ *      modify it under the terms of the GNU General Public License
++ *      as published by the Free Software Foundation; either version
++ *      2 of the License, or (at your option) any later version.
++ *
++ * Module load syntax:
++ *   insmod nf_conntrack_rtsp.o ports=port1,port2,...port<MAX_PORTS>
++ *                              max_outstanding=n setup_timeout=secs
++ *
++ * If no ports are specified, the default will be port 554.
++ *
++ * With max_outstanding you can define the maximum number of not yet
++ * answered SETUP requests per RTSP session (default 8).
++ * With setup_timeout you can specify how long the system waits for
++ * an expected data channel (default 300 seconds).
++ *
++ * 2005-02-13: Harald Welte <laforge at netfilter.org>
++ *    - port to 2.6
++ *    - update to recent post-2.6.11 api changes
++ * 2006-09-14: Steven Van Acker <deepstar at singularity.be>
++ *      - removed calls to NAT code from conntrack helper: NAT no longer needed to use rtsp-conntrack
++ * 2007-04-18: Michael Guntsche <mike at it-loops.com>
++ *                    - Port to new NF API
++ */
++
++#include <linux/module.h>
++#include <linux/netfilter.h>
++#include <linux/ip.h>
++#include <linux/inet.h>
++#include <net/tcp.h>
++
++#include <net/netfilter/nf_conntrack.h>
++#include <net/netfilter/nf_conntrack_expect.h>
++#include <net/netfilter/nf_conntrack_helper.h>
++#include <linux/netfilter/nf_conntrack_rtsp.h>
++
++#define NF_NEED_STRNCASECMP
++#define NF_NEED_STRTOU16
++#define NF_NEED_STRTOU32
++#define NF_NEED_NEXTLINE
++#include <linux/netfilter_helpers.h>
++#define NF_NEED_MIME_NEXTLINE
++#include <linux/netfilter_mime.h>
++
++#include <linux/ctype.h>
++#define MAX_SIMUL_SETUP 8 /* XXX: use max_outstanding */
++#define INFOP(fmt, args...) printk(KERN_INFO "%s: %s: " fmt, __FILE__, __FUNCTION__ , ## args)
++#if 0
++#define DEBUGP(fmt, args...) printk(KERN_DEBUG "%s: %s: " fmt, __FILE__, __FUNCTION__ , ## args)
++#else
++#define DEBUGP(fmt, args...)
++#endif
++
++#define MAX_PORTS 8
++static int ports[MAX_PORTS];
++static int num_ports = 0;
++static int max_outstanding = 8;
++static unsigned int setup_timeout = 300;
++
++MODULE_AUTHOR("Tom Marshall <tmarshall at real.com>");
++MODULE_DESCRIPTION("RTSP connection tracking module");
++MODULE_LICENSE("GPL");
++module_param_array(ports, int, &num_ports, 0400);
++MODULE_PARM_DESC(ports, "port numbers of RTSP servers");
++module_param(max_outstanding, int, 0400);
++MODULE_PARM_DESC(max_outstanding, "max number of outstanding SETUP requests per RTSP session");
++module_param(setup_timeout, int, 0400);
++MODULE_PARM_DESC(setup_timeout, "timeout on for unestablished data channels");
++
++static char *rtsp_buffer;
++static DEFINE_SPINLOCK(rtsp_buffer_lock);
++
++unsigned int (*nf_nat_rtsp_hook)(struct sk_buff *skb,
++                               enum ip_conntrack_info ctinfo,
++                               unsigned int matchoff, unsigned int matchlen,struct ip_ct_rtsp_expect* prtspexp,
++                               struct nf_conntrack_expect *exp);
++void (*nf_nat_rtsp_hook_expectfn)(struct nf_conn *ct, struct nf_conntrack_expect *exp);
++
++EXPORT_SYMBOL_GPL(nf_nat_rtsp_hook);
++
++/*
++ * Max mappings we will allow for one RTSP connection (for RTP, the number
++ * of allocated ports is twice this value).  Note that SMIL burns a lot of
++ * ports so keep this reasonably high.  If this is too low, you will see a
++ * lot of "no free client map entries" messages.
++ */
++#define MAX_PORT_MAPS 16
++
++/*** default port list was here in the masq code: 554, 3030, 4040 ***/
++
++#define SKIP_WSPACE(ptr,len,off) while(off < len && isspace(*(ptr+off))) { off++; }
++
++/*
++ * Parse an RTSP packet.
++ *
++ * Returns zero if parsing failed.
++ *
++ * Parameters:
++ *  IN      ptcp        tcp data pointer
++ *  IN      tcplen      tcp data len
++ *  IN/OUT  ptcpoff     points to current tcp offset
++ *  OUT     phdrsoff    set to offset of rtsp headers
++ *  OUT     phdrslen    set to length of rtsp headers
++ *  OUT     pcseqoff    set to offset of CSeq header
++ *  OUT     pcseqlen    set to length of CSeq header
++ */
++static int
++rtsp_parse_message(char* ptcp, uint tcplen, uint* ptcpoff,
++                   uint* phdrsoff, uint* phdrslen,
++                   uint* pcseqoff, uint* pcseqlen,
++                   uint* transoff, uint* translen)
++{
++      uint    entitylen = 0;
++      uint    lineoff;
++      uint    linelen;
++
++      if (!nf_nextline(ptcp, tcplen, ptcpoff, &lineoff, &linelen))
++              return 0;
++
++      *phdrsoff = *ptcpoff;
++      while (nf_mime_nextline(ptcp, tcplen, ptcpoff, &lineoff, &linelen)) {
++              if (linelen == 0) {
++                      if (entitylen > 0)
++                              *ptcpoff += min(entitylen, tcplen - *ptcpoff);
++                      break;
++              }
++              if (lineoff+linelen > tcplen) {
++                      INFOP("!! overrun !!\n");
++                      break;
++              }
++
++              if (nf_strncasecmp(ptcp+lineoff, "CSeq:", 5) == 0) {
++                      *pcseqoff = lineoff;
++                      *pcseqlen = linelen;
++              }
++
++              if (nf_strncasecmp(ptcp+lineoff, "Transport:", 10) == 0) {
++                      *transoff = lineoff;
++                      *translen = linelen;
++              }
++
++              if (nf_strncasecmp(ptcp+lineoff, "Content-Length:", 15) == 0) {
++                      uint off = lineoff+15;
++                      SKIP_WSPACE(ptcp+lineoff, linelen, off);
++                      nf_strtou32(ptcp+off, &entitylen);
++              }
++      }
++      *phdrslen = (*ptcpoff) - (*phdrsoff);
++
++      return 1;
++}
++
++/*
++ * Find lo/hi client ports (if any) in transport header
++ * In:
++ *   ptcp, tcplen = packet
++ *   tranoff, tranlen = buffer to search
++ *
++ * Out:
++ *   pport_lo, pport_hi = lo/hi ports (host endian)
++ *
++ * Returns nonzero if any client ports found
++ *
++ * Note: it is valid (and expected) for the client to request multiple
++ * transports, so we need to parse the entire line.
++ */
++static int
++rtsp_parse_transport(char* ptran, uint tranlen,
++                     struct ip_ct_rtsp_expect* prtspexp)
++{
++      int     rc = 0;
++      uint    off = 0;
++
++      if (tranlen < 10 || !iseol(ptran[tranlen-1]) ||
++          nf_strncasecmp(ptran, "Transport:", 10) != 0) {
++              INFOP("sanity check failed\n");
++              return 0;
++      }
++
++      DEBUGP("tran='%.*s'\n", (int)tranlen, ptran);
++      off += 10;
++      SKIP_WSPACE(ptran, tranlen, off);
++
++      /* Transport: tran;field;field=val,tran;field;field=val,... */
++      while (off < tranlen) {
++              const char* pparamend;
++              uint        nextparamoff;
++
++              pparamend = memchr(ptran+off, ',', tranlen-off);
++              pparamend = (pparamend == NULL) ? ptran+tranlen : pparamend+1;
++              nextparamoff = pparamend-ptran;
++
++              while (off < nextparamoff) {
++                      const char* pfieldend;
++                      uint        nextfieldoff;
++
++                      pfieldend = memchr(ptran+off, ';', nextparamoff-off);
++                      nextfieldoff = (pfieldend == NULL) ? nextparamoff : pfieldend-ptran+1;
++
++                      if (strncmp(ptran+off, "client_port=", 12) == 0) {
++                              u_int16_t   port;
++                              uint        numlen;
++
++                              off += 12;
++                              numlen = nf_strtou16(ptran+off, &port);
++                              off += numlen;
++                              if (prtspexp->loport != 0 && prtspexp->loport != port)
++                                      DEBUGP("multiple ports found, port %hu ignored\n", port);
++                              else {
++                                      DEBUGP("lo port found : %hu\n", port);
++                                      prtspexp->loport = prtspexp->hiport = port;
++                                      if (ptran[off] == '-') {
++                                              off++;
++                                              numlen = nf_strtou16(ptran+off, &port);
++                                              off += numlen;
++                                              prtspexp->pbtype = pb_range;
++                                              prtspexp->hiport = port;
++
++                                              // If we have a range, assume rtp:
++                                              // loport must be even, hiport must be loport+1
++                                              if ((prtspexp->loport & 0x0001) != 0 ||
++                                                  prtspexp->hiport != prtspexp->loport+1) {
++                                                      DEBUGP("incorrect range: %hu-%hu, correcting\n",
++                                                             prtspexp->loport, prtspexp->hiport);
++                                                      prtspexp->loport &= 0xfffe;
++                                                      prtspexp->hiport = prtspexp->loport+1;
++                                              }
++                                      } else if (ptran[off] == '/') {
++                                              off++;
++                                              numlen = nf_strtou16(ptran+off, &port);
++                                              off += numlen;
++                                              prtspexp->pbtype = pb_discon;
++                                              prtspexp->hiport = port;
++                                      }
++                                      rc = 1;
++                              }
++                      }
++
++                      /*
++                       * Note we don't look for the destination parameter here.
++                       * If we are using NAT, the NAT module will handle it.  If not,
++                       * and the client is sending packets elsewhere, the expectation
++                       * will quietly time out.
++                       */
++
++                      off = nextfieldoff;
++              }
++
++              off = nextparamoff;
++      }
++
++      return rc;
++}
++
++void expected(struct nf_conn *ct, struct nf_conntrack_expect *exp)
++{
++    if(nf_nat_rtsp_hook_expectfn) {
++        nf_nat_rtsp_hook_expectfn(ct,exp);
++    }
++}
++
++/*** conntrack functions ***/
++
++/* outbound packet: client->server */
++
++static inline int
++help_out(struct sk_buff *skb, unsigned char *rb_ptr, unsigned int datalen,
++                struct nf_conn *ct, enum ip_conntrack_info ctinfo)
++{
++      struct ip_ct_rtsp_expect expinfo;
++
++      int dir = CTINFO2DIR(ctinfo);   /* = IP_CT_DIR_ORIGINAL */
++      //struct  tcphdr* tcph = (void*)iph + iph->ihl * 4;
++      //uint    tcplen = pktlen - iph->ihl * 4;
++      char*   pdata = rb_ptr;
++      //uint    datalen = tcplen - tcph->doff * 4;
++      uint    dataoff = 0;
++      int ret = NF_ACCEPT;
++
++      struct nf_conntrack_expect *exp;
++
++      __be16 be_loport;
++
++      memset(&expinfo, 0, sizeof(expinfo));
++
++      while (dataoff < datalen) {
++              uint    cmdoff = dataoff;
++              uint    hdrsoff = 0;
++              uint    hdrslen = 0;
++              uint    cseqoff = 0;
++              uint    cseqlen = 0;
++              uint    transoff = 0;
++              uint    translen = 0;
++              uint    off;
++
++              if (!rtsp_parse_message(pdata, datalen, &dataoff,
++                                      &hdrsoff, &hdrslen,
++                                      &cseqoff, &cseqlen,
++                                      &transoff, &translen))
++                      break;      /* not a valid message */
++
++              if (strncmp(pdata+cmdoff, "SETUP ", 6) != 0)
++                      continue;   /* not a SETUP message */
++              DEBUGP("found a setup message\n");
++
++              off = 0;
++              if(translen) {
++                      rtsp_parse_transport(pdata+transoff, translen, &expinfo);
++              }
++
++              if (expinfo.loport == 0) {
++                      DEBUGP("no udp transports found\n");
++                      continue;   /* no udp transports found */
++              }
++
++              DEBUGP("udp transport found, ports=(%d,%hu,%hu)\n",
++                     (int)expinfo.pbtype, expinfo.loport, expinfo.hiport);
++
++              exp = nf_ct_expect_alloc(ct);
++              if (!exp) {
++                      ret = NF_DROP;
++                      goto out;
++              }
++
++              be_loport = htons(expinfo.loport);
++
++              nf_ct_expect_init(exp, NF_CT_EXPECT_CLASS_DEFAULT,
++                      ct->tuplehash[!dir].tuple.src.l3num,
++                      &ct->tuplehash[!dir].tuple.src.u3, &ct->tuplehash[!dir].tuple.dst.u3,
++                      IPPROTO_UDP, NULL, &be_loport);
++
++              exp->master = ct;
++
++              exp->expectfn = expected;
++              exp->flags = 0;
++
++              if (expinfo.pbtype == pb_range) {
++                      DEBUGP("Changing expectation mask to handle multiple ports\n");
++                      exp->mask.src.u.udp.port  = 0xfffe;
++              }
++
++              DEBUGP("expect_related %u.%u.%u.%u:%u-%u.%u.%u.%u:%u\n",
++                     NIPQUAD(exp->tuple.src.u3.ip),
++                     ntohs(exp->tuple.src.u.udp.port),
++                     NIPQUAD(exp->tuple.dst.u3.ip),
++                     ntohs(exp->tuple.dst.u.udp.port));
++
++              if (nf_nat_rtsp_hook)
++                      /* pass the request off to the nat helper */
++                      ret = nf_nat_rtsp_hook(skb, ctinfo, hdrsoff, hdrslen, &expinfo, exp);
++              else if (nf_ct_expect_related(exp) != 0) {
++                      INFOP("nf_ct_expect_related failed\n");
++                      ret  = NF_DROP;
++              }
++              nf_ct_expect_put(exp);
++              goto out;
++      }
++out:
++
++      return ret;
++}
++
++
++static inline int
++help_in(struct sk_buff *skb, size_t pktlen,
++ struct nf_conn* ct, enum ip_conntrack_info ctinfo)
++{
++ return NF_ACCEPT;
++}
++
++static int help(struct sk_buff *skb, unsigned int protoff,
++              struct nf_conn *ct, enum ip_conntrack_info ctinfo)
++{
++      struct tcphdr _tcph, *th;
++      unsigned int dataoff, datalen;
++      char *rb_ptr;
++      int ret = NF_DROP;
++
++      /* Until there's been traffic both ways, don't look in packets. */
++      if (ctinfo != IP_CT_ESTABLISHED &&
++          ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) {
++              DEBUGP("conntrackinfo = %u\n", ctinfo);
++              return NF_ACCEPT;
++      }
++
++      /* Not whole TCP header? */
++      th = skb_header_pointer(skb, protoff, sizeof(_tcph), &_tcph);
++
++      if (!th)
++              return NF_ACCEPT;
++
++      /* No data ? */
++      dataoff = protoff + th->doff*4;
++      datalen = skb->len - dataoff;
++      if (dataoff >= skb->len)
++              return NF_ACCEPT;
++
++      spin_lock_bh(&rtsp_buffer_lock);
++      rb_ptr = skb_header_pointer(skb, dataoff,
++                                  skb->len - dataoff, rtsp_buffer);
++      BUG_ON(rb_ptr == NULL);
++
++#if 0
++      /* Checksum invalid?  Ignore. */
++      /* FIXME: Source route IP option packets --RR */
++      if (tcp_v4_check(tcph, tcplen, iph->saddr, iph->daddr,
++                       csum_partial((char*)tcph, tcplen, 0)))
++      {
++              DEBUGP("bad csum: %p %u %u.%u.%u.%u %u.%u.%u.%u\n",
++                     tcph, tcplen, NIPQUAD(iph->saddr), NIPQUAD(iph->daddr));
++              return NF_ACCEPT;
++      }
++#endif
++
++      switch (CTINFO2DIR(ctinfo)) {
++      case IP_CT_DIR_ORIGINAL:
++              ret = help_out(skb, rb_ptr, datalen, ct, ctinfo);
++              break;
++      case IP_CT_DIR_REPLY:
++              DEBUGP("IP_CT_DIR_REPLY\n");
++              /* inbound packet: server->client */
++              ret = NF_ACCEPT;
++              break;
++      }
++
++      spin_unlock_bh(&rtsp_buffer_lock);
++
++      return ret;
++}
++
++static struct nf_conntrack_helper rtsp_helpers[MAX_PORTS];
++static char rtsp_names[MAX_PORTS][10];
++static struct nf_conntrack_expect_policy rtsp_expect_policy;
++
++/* This function is intentionally _NOT_ defined as __exit */
++static void
++fini(void)
++{
++      int i;
++      for (i = 0; i < num_ports; i++) {
++              DEBUGP("unregistering port %d\n", ports[i]);
++              nf_conntrack_helper_unregister(&rtsp_helpers[i]);
++      }
++      kfree(rtsp_buffer);
++}
++
++static int __init
++init(void)
++{
++      int i, ret;
++      struct nf_conntrack_helper *hlpr;
++      char *tmpname;
++
++      printk("nf_conntrack_rtsp v" IP_NF_RTSP_VERSION " loading\n");
++
++      if (max_outstanding < 1) {
++              printk("nf_conntrack_rtsp: max_outstanding must be a positive integer\n");
++              return -EBUSY;
++      }
++      if (setup_timeout < 0) {
++              printk("nf_conntrack_rtsp: setup_timeout must be a positive integer\n");
++              return -EBUSY;
++      }
++
++      rtsp_expect_policy.max_expected = max_outstanding;
++      rtsp_expect_policy.timeout = setup_timeout;
++
++      rtsp_buffer = kmalloc(65536, GFP_KERNEL);
++      if (!rtsp_buffer)
++              return -ENOMEM;
++
++      /* If no port given, default to standard rtsp port */
++      if (ports[0] == 0) {
++              ports[0] = RTSP_PORT;
++      }
++
++      for (i = 0; (i < MAX_PORTS) && ports[i]; i++) {
++              hlpr = &rtsp_helpers[i];
++              memset(hlpr, 0, sizeof(struct nf_conntrack_helper));
++              hlpr->tuple.src.u.tcp.port = htons(ports[i]);
++              hlpr->tuple.dst.protonum = IPPROTO_TCP;
++              hlpr->expect_policy = &rtsp_expect_policy;
++              hlpr->me = THIS_MODULE;
++              hlpr->help = help;
++
++              tmpname = &rtsp_names[i][0];
++              if (ports[i] == RTSP_PORT) {
++                      sprintf(tmpname, "rtsp");
++              } else {
++                      sprintf(tmpname, "rtsp-%d", i);
++              }
++              hlpr->name = tmpname;
++
++              DEBUGP("port #%d: %d\n", i, ports[i]);
++
++              ret = nf_conntrack_helper_register(hlpr);
++
++              if (ret) {
++                      printk("nf_conntrack_rtsp: ERROR registering port %d\n", ports[i]);
++                      fini();
++                      return -EBUSY;
++              }
++              num_ports++;
++      }
++      return 0;
++}
++
++module_init(init);
++module_exit(fini);
++
++EXPORT_SYMBOL(nf_nat_rtsp_hook_expectfn);
++
+--- /dev/null
++++ b/net/ipv4/netfilter/nf_nat_rtsp.c
+@@ -0,0 +1,496 @@
++/*
++ * RTSP extension for TCP NAT alteration
++ * (C) 2003 by Tom Marshall <tmarshall at real.com>
++ * based on ip_nat_irc.c
++ *
++ *      This program is free software; you can redistribute it and/or
++ *      modify it under the terms of the GNU General Public License
++ *      as published by the Free Software Foundation; either version
++ *      2 of the License, or (at your option) any later version.
++ *
++ * Module load syntax:
++ *      insmod nf_nat_rtsp.o ports=port1,port2,...port<MAX_PORTS>
++ *                           stunaddr=<address>
++ *                           destaction=[auto|strip|none]
++ *
++ * If no ports are specified, the default will be port 554 only.
++ *
++ * stunaddr specifies the address used to detect that a client is using STUN.
++ * If this address is seen in the destination parameter, it is assumed that
++ * the client has already punched a UDP hole in the firewall, so we don't
++ * mangle the client_port.  If none is specified, it is autodetected.  It
++ * only needs to be set if you have multiple levels of NAT.  It should be
++ * set to the external address that the STUN clients detect.  Note that in
++ * this case, it will not be possible for clients to use UDP with servers
++ * between the NATs.
++ *
++ * If no destaction is specified, auto is used.
++ *   destaction=auto:  strip destination parameter if it is not stunaddr.
++ *   destaction=strip: always strip destination parameter (not recommended).
++ *   destaction=none:  do not touch destination parameter (not recommended).
++ */
++
++#include <linux/module.h>
++#include <net/tcp.h>
++#include <net/netfilter/nf_nat_helper.h>
++#include <net/netfilter/nf_nat_rule.h>
++#include <linux/netfilter/nf_conntrack_rtsp.h>
++#include <net/netfilter/nf_conntrack_expect.h>
++
++#include <linux/inet.h>
++#include <linux/ctype.h>
++#define NF_NEED_STRNCASECMP
++#define NF_NEED_STRTOU16
++#include <linux/netfilter_helpers.h>
++#define NF_NEED_MIME_NEXTLINE
++#include <linux/netfilter_mime.h>
++
++#define INFOP(fmt, args...) printk(KERN_INFO "%s: %s: " fmt, __FILE__, __FUNCTION__ , ## args)
++#if 0
++#define DEBUGP(fmt, args...) printk(KERN_DEBUG "%s: %s: " fmt, __FILE__, __FUNCTION__ , ## args)
++#else
++#define DEBUGP(fmt, args...)
++#endif
++
++#define MAX_PORTS       8
++#define DSTACT_AUTO     0
++#define DSTACT_STRIP    1
++#define DSTACT_NONE     2
++
++static char*    stunaddr = NULL;
++static char*    destaction = NULL;
++
++static u_int32_t extip = 0;
++static int       dstact = 0;
++
++MODULE_AUTHOR("Tom Marshall <tmarshall at real.com>");
++MODULE_DESCRIPTION("RTSP network address translation module");
++MODULE_LICENSE("GPL");
++module_param(stunaddr, charp, 0644);
++MODULE_PARM_DESC(stunaddr, "Address for detecting STUN");
++module_param(destaction, charp, 0644);
++MODULE_PARM_DESC(destaction, "Action for destination parameter (auto/strip/none)");
++
++#define SKIP_WSPACE(ptr,len,off) while(off < len && isspace(*(ptr+off))) { off++; }
++
++/*** helper functions ***/
++
++static void
++get_skb_tcpdata(struct sk_buff* skb, char** pptcpdata, uint* ptcpdatalen)
++{
++    struct iphdr*   iph  = ip_hdr(skb);
++    struct tcphdr*  tcph = (void *)iph + ip_hdrlen(skb);
++
++    *pptcpdata = (char*)tcph +  tcph->doff*4;
++    *ptcpdatalen = ((char*)skb_transport_header(skb) + skb->len) - *pptcpdata;
++}
++
++/*** nat functions ***/
++
++/*
++ * Mangle the "Transport:" header:
++ *   - Replace all occurences of "client_port=<spec>"
++ *   - Handle destination parameter
++ *
++ * In:
++ *   ct, ctinfo = conntrack context
++ *   skb        = packet
++ *   tranoff    = Transport header offset from TCP data
++ *   tranlen    = Transport header length (incl. CRLF)
++ *   rport_lo   = replacement low  port (host endian)
++ *   rport_hi   = replacement high port (host endian)
++ *
++ * Returns packet size difference.
++ *
++ * Assumes that a complete transport header is present, ending with CR or LF
++ */
++static int
++rtsp_mangle_tran(enum ip_conntrack_info ctinfo,
++                 struct nf_conntrack_expect* exp,
++                                                               struct ip_ct_rtsp_expect* prtspexp,
++                 struct sk_buff* skb, uint tranoff, uint tranlen)
++{
++    char*       ptcp;
++    uint        tcplen;
++    char*       ptran;
++    char        rbuf1[16];      /* Replacement buffer (one port) */
++    uint        rbuf1len;       /* Replacement len (one port) */
++    char        rbufa[16];      /* Replacement buffer (all ports) */
++    uint        rbufalen;       /* Replacement len (all ports) */
++    u_int32_t   newip;
++    u_int16_t   loport, hiport;
++    uint        off = 0;
++    uint        diff;           /* Number of bytes we removed */
++
++    struct nf_conn *ct = exp->master;
++    struct nf_conntrack_tuple *t;
++
++    char    szextaddr[15+1];
++    uint    extaddrlen;
++    int     is_stun;
++
++    get_skb_tcpdata(skb, &ptcp, &tcplen);
++    ptran = ptcp+tranoff;
++
++    if (tranoff+tranlen > tcplen || tcplen-tranoff < tranlen ||
++        tranlen < 10 || !iseol(ptran[tranlen-1]) ||
++        nf_strncasecmp(ptran, "Transport:", 10) != 0)
++    {
++        INFOP("sanity check failed\n");
++        return 0;
++    }
++    off += 10;
++    SKIP_WSPACE(ptcp+tranoff, tranlen, off);
++
++    newip = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip;
++    t = &exp->tuple;
++    t->dst.u3.ip = newip;
++
++    extaddrlen = extip ? sprintf(szextaddr, "%u.%u.%u.%u", &extip)
++                       : sprintf(szextaddr, "%u.%u.%u.%u", &newip);
++    DEBUGP("stunaddr=%s (%s)\n", szextaddr, (extip?"forced":"auto"));
++
++    rbuf1len = rbufalen = 0;
++    switch (prtspexp->pbtype)
++    {
++    case pb_single:
++        for (loport = prtspexp->loport; loport != 0; loport++) /* XXX: improper wrap? */
++        {
++            t->dst.u.udp.port = htons(loport);
++            if (nf_ct_expect_related(exp) == 0)
++            {
++                DEBUGP("using port %hu\n", loport);
++                break;
++            }
++        }
++        if (loport != 0)
++        {
++            rbuf1len = sprintf(rbuf1, "%hu", loport);
++            rbufalen = sprintf(rbufa, "%hu", loport);
++        }
++        break;
++    case pb_range:
++        for (loport = prtspexp->loport; loport != 0; loport += 2) /* XXX: improper wrap? */
++        {
++            t->dst.u.udp.port = htons(loport);
++            if (nf_ct_expect_related(exp) == 0)
++            {
++                hiport = loport + ~exp->mask.src.u.udp.port;
++                DEBUGP("using ports %hu-%hu\n", loport, hiport);
++                break;
++            }
++        }
++        if (loport != 0)
++        {
++            rbuf1len = sprintf(rbuf1, "%hu", loport);
++            rbufalen = sprintf(rbufa, "%hu-%hu", loport, loport+1);
++        }
++        break;
++    case pb_discon:
++        for (loport = prtspexp->loport; loport != 0; loport++) /* XXX: improper wrap? */
++        {
++            t->dst.u.udp.port = htons(loport);
++            if (nf_ct_expect_related(exp) == 0)
++            {
++                DEBUGP("using port %hu (1 of 2)\n", loport);
++                break;
++            }
++        }
++        for (hiport = prtspexp->hiport; hiport != 0; hiport++) /* XXX: improper wrap? */
++        {
++            t->dst.u.udp.port = htons(hiport);
++            if (nf_ct_expect_related(exp) == 0)
++            {
++                DEBUGP("using port %hu (2 of 2)\n", hiport);
++                break;
++            }
++        }
++        if (loport != 0 && hiport != 0)
++        {
++            rbuf1len = sprintf(rbuf1, "%hu", loport);
++            if (hiport == loport+1)
++            {
++                rbufalen = sprintf(rbufa, "%hu-%hu", loport, hiport);
++            }
++            else
++            {
++                rbufalen = sprintf(rbufa, "%hu/%hu", loport, hiport);
++            }
++        }
++        break;
++    }
++
++    if (rbuf1len == 0)
++    {
++        return 0;   /* cannot get replacement port(s) */
++    }
++
++    /* Transport: tran;field;field=val,tran;field;field=val,... */
++    while (off < tranlen)
++    {
++        uint        saveoff;
++        const char* pparamend;
++        uint        nextparamoff;
++
++        pparamend = memchr(ptran+off, ',', tranlen-off);
++        pparamend = (pparamend == NULL) ? ptran+tranlen : pparamend+1;
++        nextparamoff = pparamend-ptcp;
++
++        /*
++         * We pass over each param twice.  On the first pass, we look for a
++         * destination= field.  It is handled by the security policy.  If it
++         * is present, allowed, and equal to our external address, we assume
++         * that STUN is being used and we leave the client_port= field alone.
++         */
++        is_stun = 0;
++        saveoff = off;
++        while (off < nextparamoff)
++        {
++            const char* pfieldend;
++            uint        nextfieldoff;
++
++            pfieldend = memchr(ptran+off, ';', nextparamoff-off);
++            nextfieldoff = (pfieldend == NULL) ? nextparamoff : pfieldend-ptran+1;
++
++            if (dstact != DSTACT_NONE && strncmp(ptran+off, "destination=", 12) == 0)
++            {
++                if (strncmp(ptran+off+12, szextaddr, extaddrlen) == 0)
++                {
++                    is_stun = 1;
++                }
++                if (dstact == DSTACT_STRIP || (dstact == DSTACT_AUTO && !is_stun))
++                {
++                    diff = nextfieldoff-off;
++                    if (!nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
++                                                         off, diff, NULL, 0))
++                    {
++                        /* mangle failed, all we can do is bail */
++                      nf_ct_unexpect_related(exp);
++                        return 0;
++                    }
++                    get_skb_tcpdata(skb, &ptcp, &tcplen);
++                    ptran = ptcp+tranoff;
++                    tranlen -= diff;
++                    nextparamoff -= diff;
++                    nextfieldoff -= diff;
++                }
++            }
++
++            off = nextfieldoff;
++        }
++        if (is_stun)
++        {
++            continue;
++        }
++        off = saveoff;
++        while (off < nextparamoff)
++        {
++            const char* pfieldend;
++            uint        nextfieldoff;
++
++            pfieldend = memchr(ptran+off, ';', nextparamoff-off);
++            nextfieldoff = (pfieldend == NULL) ? nextparamoff : pfieldend-ptran+1;
++
++            if (strncmp(ptran+off, "client_port=", 12) == 0)
++            {
++                u_int16_t   port;
++                uint        numlen;
++                uint        origoff;
++                uint        origlen;
++                char*       rbuf    = rbuf1;
++                uint        rbuflen = rbuf1len;
++
++                off += 12;
++                origoff = (ptran-ptcp)+off;
++                origlen = 0;
++                numlen = nf_strtou16(ptran+off, &port);
++                off += numlen;
++                origlen += numlen;
++                if (port != prtspexp->loport)
++                {
++                    DEBUGP("multiple ports found, port %hu ignored\n", port);
++                }
++                else
++                {
++                    if (ptran[off] == '-' || ptran[off] == '/')
++                    {
++                        off++;
++                        origlen++;
++                        numlen = nf_strtou16(ptran+off, &port);
++                        off += numlen;
++                        origlen += numlen;
++                        rbuf = rbufa;
++                        rbuflen = rbufalen;
++                    }
++
++                    /*
++                     * note we cannot just memcpy() if the sizes are the same.
++                     * the mangle function does skb resizing, checks for a
++                     * cloned skb, and updates the checksums.
++                     *
++                     * parameter 4 below is offset from start of tcp data.
++                     */
++                    diff = origlen-rbuflen;
++                    if (!nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
++                                              origoff, origlen, rbuf, rbuflen))
++                    {
++                        /* mangle failed, all we can do is bail */
++                      nf_ct_unexpect_related(exp);
++                        return 0;
++                    }
++                    get_skb_tcpdata(skb, &ptcp, &tcplen);
++                    ptran = ptcp+tranoff;
++                    tranlen -= diff;
++                    nextparamoff -= diff;
++                    nextfieldoff -= diff;
++                }
++            }
++
++            off = nextfieldoff;
++        }
++
++        off = nextparamoff;
++    }
++
++    return 1;
++}
++
++static uint
++help_out(struct sk_buff *skb, enum ip_conntrack_info ctinfo,
++       unsigned int matchoff, unsigned int matchlen, struct ip_ct_rtsp_expect* prtspexp,
++       struct nf_conntrack_expect* exp)
++{
++    char*   ptcp;
++    uint    tcplen;
++    uint    hdrsoff;
++    uint    hdrslen;
++    uint    lineoff;
++    uint    linelen;
++    uint    off;
++
++    //struct iphdr* iph = (struct iphdr*)skb->nh.iph;
++    //struct tcphdr* tcph = (struct tcphdr*)((void*)iph + iph->ihl*4);
++
++    get_skb_tcpdata(skb, &ptcp, &tcplen);
++    hdrsoff = matchoff;//exp->seq - ntohl(tcph->seq);
++    hdrslen = matchlen;
++    off = hdrsoff;
++    DEBUGP("NAT rtsp help_out\n");
++
++    while (nf_mime_nextline(ptcp, hdrsoff+hdrslen, &off, &lineoff, &linelen))
++    {
++        if (linelen == 0)
++        {
++            break;
++        }
++        if (off > hdrsoff+hdrslen)
++        {
++            INFOP("!! overrun !!");
++            break;
++        }
++        DEBUGP("hdr: len=%u, %.*s", linelen, (int)linelen, ptcp+lineoff);
++
++        if (nf_strncasecmp(ptcp+lineoff, "Transport:", 10) == 0)
++        {
++            uint oldtcplen = tcplen;
++          DEBUGP("hdr: Transport\n");
++            if (!rtsp_mangle_tran(ctinfo, exp, prtspexp, skb, lineoff, linelen))
++            {
++              DEBUGP("hdr: Transport mangle failed");
++                break;
++            }
++            get_skb_tcpdata(skb, &ptcp, &tcplen);
++            hdrslen -= (oldtcplen-tcplen);
++            off -= (oldtcplen-tcplen);
++            lineoff -= (oldtcplen-tcplen);
++            linelen -= (oldtcplen-tcplen);
++            DEBUGP("rep: len=%u, %.*s", linelen, (int)linelen, ptcp+lineoff);
++        }
++    }
++
++    return NF_ACCEPT;
++}
++
++static unsigned int
++help(struct sk_buff *skb, enum ip_conntrack_info ctinfo,
++     unsigned int matchoff, unsigned int matchlen, struct ip_ct_rtsp_expect* prtspexp,
++     struct nf_conntrack_expect* exp)
++{
++    int dir = CTINFO2DIR(ctinfo);
++    int rc = NF_ACCEPT;
++
++    switch (dir)
++    {
++    case IP_CT_DIR_ORIGINAL:
++        rc = help_out(skb, ctinfo, matchoff, matchlen, prtspexp, exp);
++        break;
++    case IP_CT_DIR_REPLY:
++      DEBUGP("unmangle ! %u\n", ctinfo);
++      /* XXX: unmangle */
++      rc = NF_ACCEPT;
++        break;
++    }
++    //UNLOCK_BH(&ip_rtsp_lock);
++
++    return rc;
++}
++
++static void expected(struct nf_conn* ct, struct nf_conntrack_expect *exp)
++{
++    struct nf_nat_multi_range_compat mr;
++    u_int32_t newdstip, newsrcip, newip;
++
++    struct nf_conn *master = ct->master;
++
++    newdstip = master->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip;
++    newsrcip = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip;
++    //FIXME (how to port that ?)
++    //code from 2.4 : newip = (HOOK2MANIP(hooknum) == IP_NAT_MANIP_SRC) ? newsrcip : newdstip;
++    newip = newdstip;
++
++    DEBUGP("newsrcip=%u.%u.%u.%u, newdstip=%u.%u.%u.%u, newip=%u.%u.%u.%u\n",
++           &newsrcip, &newdstip, &newip);
++
++    mr.rangesize = 1;
++    // We don't want to manip the per-protocol, just the IPs.
++    mr.range[0].flags = IP_NAT_RANGE_MAP_IPS;
++    mr.range[0].min_ip = mr.range[0].max_ip = newip;
++
++    nf_nat_setup_info(ct, &mr.range[0], IP_NAT_MANIP_DST);
++}
++
++
++static void __exit fini(void)
++{
++      nf_nat_rtsp_hook = NULL;
++        nf_nat_rtsp_hook_expectfn = NULL;
++      synchronize_net();
++}
++
++static int __init init(void)
++{
++      printk("nf_nat_rtsp v" IP_NF_RTSP_VERSION " loading\n");
++
++      BUG_ON(nf_nat_rtsp_hook);
++      nf_nat_rtsp_hook = help;
++        nf_nat_rtsp_hook_expectfn = &expected;
++
++      if (stunaddr != NULL)
++              extip = in_aton(stunaddr);
++
++      if (destaction != NULL) {
++              if (strcmp(destaction, "auto") == 0)
++                      dstact = DSTACT_AUTO;
++
++              if (strcmp(destaction, "strip") == 0)
++                      dstact = DSTACT_STRIP;
++
++              if (strcmp(destaction, "none") == 0)
++                      dstact = DSTACT_NONE;
++      }
++
++      return 0;
++}
++
++module_init(init);
++module_exit(fini);

diff --git a/target/linux/generic/patches-3.0/620-sched_esfq.patch b/target/linux/generic/patches-3.0/620-sched_esfq.patch
new file mode 100644 (file)
index 0000000..868f97b
--- /dev/null
+++ b/target/linux/generic/patches-3.0/620-sched_esfq.patch
@@ -0,0 +1,795 @@
+--- a/include/linux/pkt_sched.h
++++ b/include/linux/pkt_sched.h
+@@ -173,8 +173,37 @@ struct tc_sfq_xstats {
+  *
+  *    The only reason for this is efficiency, it is possible
+  *    to change these parameters in compile time.
++ *
++ *    If you need to play with these values, use esfq instead.
+  */
+ 
++/* ESFQ section */
++
++enum
++{
++        /* traditional */
++      TCA_SFQ_HASH_CLASSIC,
++      TCA_SFQ_HASH_DST,
++      TCA_SFQ_HASH_SRC,
++      TCA_SFQ_HASH_FWMARK,
++      /* conntrack */
++      TCA_SFQ_HASH_CTORIGDST,
++      TCA_SFQ_HASH_CTORIGSRC,
++      TCA_SFQ_HASH_CTREPLDST,
++      TCA_SFQ_HASH_CTREPLSRC,
++      TCA_SFQ_HASH_CTNATCHG,
++};
++
++struct tc_esfq_qopt
++{
++      unsigned        quantum;        /* Bytes per round allocated to flow */
++      int             perturb_period; /* Period of hash perturbation */
++      __u32           limit;          /* Maximal packets in queue */
++      unsigned        divisor;        /* Hash divisor  */
++      unsigned        flows;          /* Maximal number of flows  */
++      unsigned        hash_kind;      /* Hash function to use for flow identification */
++};
++
+ /* RED section */
+ 
+ enum {
+--- a/net/sched/Kconfig
++++ b/net/sched/Kconfig
+@@ -148,6 +148,37 @@ config NET_SCH_SFQ
+         To compile this code as a module, choose M here: the
+         module will be called sch_sfq.
+ 
++config NET_SCH_ESFQ
++      tristate "Enhanced Stochastic Fairness Queueing (ESFQ)"
++      ---help---
++        Say Y here if you want to use the Enhanced Stochastic Fairness
++        Queueing (ESFQ) packet scheduling algorithm for some of your network
++        devices or as a leaf discipline for a classful qdisc such as HTB or
++        CBQ (see the top of <file:net/sched/sch_esfq.c> for details and
++        references to the SFQ algorithm).
++
++        This is an enchanced SFQ version which allows you to control some
++        hardcoded values in the SFQ scheduler.
++
++        ESFQ also adds control of the hash function used to identify packet
++        flows. The original SFQ discipline hashes by connection; ESFQ add
++        several other hashing methods, such as by src IP or by dst IP, which
++        can be more fair to users in some networking situations.
++
++        To compile this code as a module, choose M here: the
++        module will be called sch_esfq.
++
++config NET_SCH_ESFQ_NFCT
++      bool "Connection Tracking Hash Types"
++      depends on NET_SCH_ESFQ && NF_CONNTRACK
++      ---help---
++        Say Y here to enable support for hashing based on netfilter connection
++        tracking information. This is useful for a router that is also using
++        NAT to connect privately-addressed hosts to the Internet. If you want
++        to provide fair distribution of upstream bandwidth, ESFQ must use
++        connection tracking information, since all outgoing packets will share
++        the same source address.
++
+ config NET_SCH_TEQL
+       tristate "True Link Equalizer (TEQL)"
+       ---help---
+--- a/net/sched/Makefile
++++ b/net/sched/Makefile
+@@ -26,6 +26,7 @@ obj-$(CONFIG_NET_SCH_INGRESS)        += sch_ing
+ obj-$(CONFIG_NET_SCH_DSMARK)  += sch_dsmark.o
+ obj-$(CONFIG_NET_SCH_SFB)     += sch_sfb.o
+ obj-$(CONFIG_NET_SCH_SFQ)     += sch_sfq.o
++obj-$(CONFIG_NET_SCH_ESFQ)    += sch_esfq.o
+ obj-$(CONFIG_NET_SCH_TBF)     += sch_tbf.o
+ obj-$(CONFIG_NET_SCH_TEQL)    += sch_teql.o
+ obj-$(CONFIG_NET_SCH_PRIO)    += sch_prio.o
+--- /dev/null
++++ b/net/sched/sch_esfq.c
+@@ -0,0 +1,702 @@
++/*
++ * net/sched/sch_esfq.c       Extended Stochastic Fairness Queueing discipline.
++ *
++ *            This program is free software; you can redistribute it and/or
++ *            modify it under the terms of the GNU General Public License
++ *            as published by the Free Software Foundation; either version
++ *            2 of the License, or (at your option) any later version.
++ *
++ * Authors:   Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
++ *
++ * Changes:   Alexander Atanasov, <alex@ssi.bg>
++ *            Added dynamic depth,limit,divisor,hash_kind options.
++ *            Added dst and src hashes.
++ *
++ *            Alexander Clouter, <alex@digriz.org.uk>
++ *            Ported ESFQ to Linux 2.6.
++ *
++ *            Corey Hickey, <bugfood-c@fatooh.org>
++ *            Maintenance of the Linux 2.6 port.
++ *            Added fwmark hash (thanks to Robert Kurjata).
++ *            Added usage of jhash.
++ *            Added conntrack support.
++ *            Added ctnatchg hash (thanks to Ben Pfountz).
++ */
++
++#include <linux/module.h>
++#include <asm/uaccess.h>
++#include <asm/system.h>
++#include <linux/bitops.h>
++#include <linux/types.h>
++#include <linux/kernel.h>
++#include <linux/jiffies.h>
++#include <linux/string.h>
++#include <linux/mm.h>
++#include <linux/socket.h>
++#include <linux/sockios.h>
++#include <linux/in.h>
++#include <linux/errno.h>
++#include <linux/interrupt.h>
++#include <linux/if_ether.h>
++#include <linux/inet.h>
++#include <linux/netdevice.h>
++#include <linux/etherdevice.h>
++#include <linux/notifier.h>
++#include <linux/init.h>
++#include <net/ip.h>
++#include <net/netlink.h>
++#include <linux/ipv6.h>
++#include <net/route.h>
++#include <linux/skbuff.h>
++#include <net/sock.h>
++#include <net/pkt_sched.h>
++#include <linux/jhash.h>
++#ifdef CONFIG_NET_SCH_ESFQ_NFCT
++#include <net/netfilter/nf_conntrack.h>
++#endif
++
++/*    Stochastic Fairness Queuing algorithm.
++      For more comments look at sch_sfq.c.
++      The difference is that you can change limit, depth,
++      hash table size and choose alternate hash types.
++
++      classic:        same as in sch_sfq.c
++      dst:            destination IP address
++      src:            source IP address
++      fwmark:         netfilter mark value
++      ctorigdst:      original destination IP address
++      ctorigsrc:      original source IP address
++      ctrepldst:      reply destination IP address
++      ctreplsrc:      reply source IP
++
++*/
++
++#define ESFQ_HEAD 0
++#define ESFQ_TAIL 1
++
++/* This type should contain at least SFQ_DEPTH*2 values */
++typedef unsigned int esfq_index;
++
++struct esfq_head
++{
++      esfq_index      next;
++      esfq_index      prev;
++};
++
++struct esfq_sched_data
++{
++/* Parameters */
++      int             perturb_period;
++      unsigned        quantum;        /* Allotment per round: MUST BE >= MTU */
++      int             limit;
++      unsigned        depth;
++      unsigned        hash_divisor;
++      unsigned        hash_kind;
++/* Variables */
++      struct timer_list perturb_timer;
++      int             perturbation;
++      esfq_index      tail;           /* Index of current slot in round */
++      esfq_index      max_depth;      /* Maximal depth */
++
++      esfq_index      *ht;                    /* Hash table */
++      esfq_index      *next;                  /* Active slots link */
++      short           *allot;                 /* Current allotment per slot */
++      unsigned short  *hash;                  /* Hash value indexed by slots */
++      struct sk_buff_head     *qs;            /* Slot queue */
++      struct esfq_head        *dep;           /* Linked list of slots, indexed by depth */
++};
++
++/* This contains the info we will hash. */
++struct esfq_packet_info
++{
++      u32     proto;          /* protocol or port */
++      u32     src;            /* source from packet header */
++      u32     dst;            /* destination from packet header */
++      u32     ctorigsrc;      /* original source from conntrack */
++      u32     ctorigdst;      /* original destination from conntrack */
++      u32     ctreplsrc;      /* reply source from conntrack */
++      u32     ctrepldst;      /* reply destination from conntrack */
++      u32     mark;           /* netfilter mark (fwmark) */
++};
++
++static __inline__ unsigned esfq_jhash_1word(struct esfq_sched_data *q,u32 a)
++{
++      return jhash_1word(a, q->perturbation) & (q->hash_divisor-1);
++}
++
++static __inline__ unsigned esfq_jhash_2words(struct esfq_sched_data *q, u32 a, u32 b)
++{
++      return jhash_2words(a, b, q->perturbation) & (q->hash_divisor-1);
++}
++
++static __inline__ unsigned esfq_jhash_3words(struct esfq_sched_data *q, u32 a, u32 b, u32 c)
++{
++      return jhash_3words(a, b, c, q->perturbation) & (q->hash_divisor-1);
++}
++
++static unsigned esfq_hash(struct esfq_sched_data *q, struct sk_buff *skb)
++{
++      struct esfq_packet_info info;
++#ifdef CONFIG_NET_SCH_ESFQ_NFCT
++      enum ip_conntrack_info ctinfo;
++      struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
++#endif
++
++      switch (skb->protocol) {
++      case __constant_htons(ETH_P_IP):
++      {
++              struct iphdr *iph = ip_hdr(skb);
++              info.dst = iph->daddr;
++              info.src = iph->saddr;
++              if (!(iph->frag_off&htons(IP_MF|IP_OFFSET)) &&
++                  (iph->protocol == IPPROTO_TCP ||
++                   iph->protocol == IPPROTO_UDP ||
++                   iph->protocol == IPPROTO_SCTP ||
++                   iph->protocol == IPPROTO_DCCP ||
++                   iph->protocol == IPPROTO_ESP))
++                      info.proto = *(((u32*)iph) + iph->ihl);
++              else
++                      info.proto = iph->protocol;
++              break;
++      }
++      case __constant_htons(ETH_P_IPV6):
++      {
++              struct ipv6hdr *iph = ipv6_hdr(skb);
++              /* Hash ipv6 addresses into a u32. This isn't ideal,
++               * but the code is simple. */
++              info.dst = jhash2(iph->daddr.s6_addr32, 4, q->perturbation);
++              info.src = jhash2(iph->saddr.s6_addr32, 4, q->perturbation);
++              if (iph->nexthdr == IPPROTO_TCP ||
++                  iph->nexthdr == IPPROTO_UDP ||
++                  iph->nexthdr == IPPROTO_SCTP ||
++                  iph->nexthdr == IPPROTO_DCCP ||
++                  iph->nexthdr == IPPROTO_ESP)
++                      info.proto = *(u32*)&iph[1];
++              else
++                      info.proto = iph->nexthdr;
++              break;
++      }
++      default:
++              info.dst   = (u32)(unsigned long)skb_dst(skb);
++              info.src   = (u32)(unsigned long)skb->sk;
++              info.proto = skb->protocol;
++      }
++
++      info.mark = skb->mark;
++
++#ifdef CONFIG_NET_SCH_ESFQ_NFCT
++      /* defaults if there is no conntrack info */
++      info.ctorigsrc = info.src;
++      info.ctorigdst = info.dst;
++      info.ctreplsrc = info.dst;
++      info.ctrepldst = info.src;
++      /* collect conntrack info */
++      if (ct && ct != &nf_conntrack_untracked) {
++              if (skb->protocol == __constant_htons(ETH_P_IP)) {
++                      info.ctorigsrc = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip;
++                      info.ctorigdst = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3.ip;
++                      info.ctreplsrc = ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip;
++                      info.ctrepldst = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip;
++              }
++              else if (skb->protocol == __constant_htons(ETH_P_IPV6)) {
++                      /* Again, hash ipv6 addresses into a single u32. */
++                      info.ctorigsrc = jhash2(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip6, 4, q->perturbation);
++                      info.ctorigdst = jhash2(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3.ip6, 4, q->perturbation);
++                      info.ctreplsrc = jhash2(ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip6, 4, q->perturbation);
++                      info.ctrepldst = jhash2(ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip6, 4, q->perturbation);
++              }
++
++      }
++#endif
++
++      switch(q->hash_kind) {
++      case TCA_SFQ_HASH_CLASSIC:
++              return esfq_jhash_3words(q, info.dst, info.src, info.proto);
++      case TCA_SFQ_HASH_DST:
++              return esfq_jhash_1word(q, info.dst);
++      case TCA_SFQ_HASH_SRC:
++              return esfq_jhash_1word(q, info.src);
++      case TCA_SFQ_HASH_FWMARK:
++              return esfq_jhash_1word(q, info.mark);
++#ifdef CONFIG_NET_SCH_ESFQ_NFCT
++      case TCA_SFQ_HASH_CTORIGDST:
++              return esfq_jhash_1word(q, info.ctorigdst);
++      case TCA_SFQ_HASH_CTORIGSRC:
++              return esfq_jhash_1word(q, info.ctorigsrc);
++      case TCA_SFQ_HASH_CTREPLDST:
++              return esfq_jhash_1word(q, info.ctrepldst);
++      case TCA_SFQ_HASH_CTREPLSRC:
++              return esfq_jhash_1word(q, info.ctreplsrc);
++      case TCA_SFQ_HASH_CTNATCHG:
++      {
++              if (info.ctorigdst == info.ctreplsrc)
++                      return esfq_jhash_1word(q, info.ctorigsrc);
++              return esfq_jhash_1word(q, info.ctreplsrc);
++      }
++#endif
++      default:
++              if (net_ratelimit())
++                      printk(KERN_WARNING "ESFQ: Unknown hash method. Falling back to classic.\n");
++      }
++      return esfq_jhash_3words(q, info.dst, info.src, info.proto);
++}
++
++static inline void esfq_link(struct esfq_sched_data *q, esfq_index x)
++{
++      esfq_index p, n;
++      int d = q->qs[x].qlen + q->depth;
++
++      p = d;
++      n = q->dep[d].next;
++      q->dep[x].next = n;
++      q->dep[x].prev = p;
++      q->dep[p].next = q->dep[n].prev = x;
++}
++
++static inline void esfq_dec(struct esfq_sched_data *q, esfq_index x)
++{
++      esfq_index p, n;
++
++      n = q->dep[x].next;
++      p = q->dep[x].prev;
++      q->dep[p].next = n;
++      q->dep[n].prev = p;
++
++      if (n == p && q->max_depth == q->qs[x].qlen + 1)
++              q->max_depth--;
++
++      esfq_link(q, x);
++}
++
++static inline void esfq_inc(struct esfq_sched_data *q, esfq_index x)
++{
++      esfq_index p, n;
++      int d;
++
++      n = q->dep[x].next;
++      p = q->dep[x].prev;
++      q->dep[p].next = n;
++      q->dep[n].prev = p;
++      d = q->qs[x].qlen;
++      if (q->max_depth < d)
++              q->max_depth = d;
++
++      esfq_link(q, x);
++}
++
++static unsigned int esfq_drop(struct Qdisc *sch)
++{
++      struct esfq_sched_data *q = qdisc_priv(sch);
++      esfq_index d = q->max_depth;
++      struct sk_buff *skb;
++      unsigned int len;
++
++      /* Queue is full! Find the longest slot and
++         drop a packet from it */
++
++      if (d > 1) {
++              esfq_index x = q->dep[d+q->depth].next;
++              skb = q->qs[x].prev;
++              len = skb->len;
++              __skb_unlink(skb, &q->qs[x]);
++              kfree_skb(skb);
++              esfq_dec(q, x);
++              sch->q.qlen--;
++              sch->qstats.drops++;
++              sch->qstats.backlog -= len;
++              return len;
++      }
++
++      if (d == 1) {
++              /* It is difficult to believe, but ALL THE SLOTS HAVE LENGTH 1. */
++              d = q->next[q->tail];
++              q->next[q->tail] = q->next[d];
++              q->allot[q->next[d]] += q->quantum;
++              skb = q->qs[d].prev;
++              len = skb->len;
++              __skb_unlink(skb, &q->qs[d]);
++              kfree_skb(skb);
++              esfq_dec(q, d);
++              sch->q.qlen--;
++              q->ht[q->hash[d]] = q->depth;
++              sch->qstats.drops++;
++              sch->qstats.backlog -= len;
++              return len;
++      }
++
++      return 0;
++}
++
++static void esfq_q_enqueue(struct sk_buff *skb, struct esfq_sched_data *q, unsigned int end)
++{
++      unsigned hash = esfq_hash(q, skb);
++      unsigned depth = q->depth;
++      esfq_index x;
++
++      x = q->ht[hash];
++      if (x == depth) {
++              q->ht[hash] = x = q->dep[depth].next;
++              q->hash[x] = hash;
++      }
++
++      if (end == ESFQ_TAIL)
++              __skb_queue_tail(&q->qs[x], skb);
++      else
++              __skb_queue_head(&q->qs[x], skb);
++
++      esfq_inc(q, x);
++      if (q->qs[x].qlen == 1) {               /* The flow is new */
++              if (q->tail == depth) { /* It is the first flow */
++                      q->tail = x;
++                      q->next[x] = x;
++                      q->allot[x] = q->quantum;
++              } else {
++                      q->next[x] = q->next[q->tail];
++                      q->next[q->tail] = x;
++                      q->tail = x;
++              }
++      }
++}
++
++static int esfq_enqueue(struct sk_buff *skb, struct Qdisc* sch)
++{
++      struct esfq_sched_data *q = qdisc_priv(sch);
++      esfq_q_enqueue(skb, q, ESFQ_TAIL);
++      sch->qstats.backlog += skb->len;
++      if (++sch->q.qlen < q->limit-1) {
++              sch->bstats.bytes += skb->len;
++              sch->bstats.packets++;
++              return 0;
++      }
++
++      sch->qstats.drops++;
++      esfq_drop(sch);
++      return NET_XMIT_CN;
++}
++
++static struct sk_buff *esfq_peek(struct Qdisc* sch)
++{
++      struct esfq_sched_data *q = qdisc_priv(sch);
++      esfq_index a;
++
++      /* No active slots */
++      if (q->tail == q->depth)
++              return NULL;
++
++      a = q->next[q->tail];
++      return skb_peek(&q->qs[a]);
++}
++
++static struct sk_buff *esfq_q_dequeue(struct esfq_sched_data *q)
++{
++      struct sk_buff *skb;
++      unsigned depth = q->depth;
++      esfq_index a, old_a;
++
++      /* No active slots */
++      if (q->tail == depth)
++              return NULL;
++
++      a = old_a = q->next[q->tail];
++
++      /* Grab packet */
++      skb = __skb_dequeue(&q->qs[a]);
++      esfq_dec(q, a);
++
++      /* Is the slot empty? */
++      if (q->qs[a].qlen == 0) {
++              q->ht[q->hash[a]] = depth;
++              a = q->next[a];
++              if (a == old_a) {
++                      q->tail = depth;
++                      return skb;
++              }
++              q->next[q->tail] = a;
++              q->allot[a] += q->quantum;
++      } else if ((q->allot[a] -= skb->len) <= 0) {
++              q->tail = a;
++              a = q->next[a];
++              q->allot[a] += q->quantum;
++      }
++
++      return skb;
++}
++
++static struct sk_buff *esfq_dequeue(struct Qdisc* sch)
++{
++      struct esfq_sched_data *q = qdisc_priv(sch);
++      struct sk_buff *skb;
++
++      skb = esfq_q_dequeue(q);
++      if (skb == NULL)
++              return NULL;
++      sch->q.qlen--;
++      sch->qstats.backlog -= skb->len;
++      return skb;
++}
++
++static void esfq_q_destroy(struct esfq_sched_data *q)
++{
++      del_timer(&q->perturb_timer);
++      if(q->ht)
++              kfree(q->ht);
++      if(q->dep)
++              kfree(q->dep);
++      if(q->next)
++              kfree(q->next);
++      if(q->allot)
++              kfree(q->allot);
++      if(q->hash)
++              kfree(q->hash);
++      if(q->qs)
++              kfree(q->qs);
++}
++
++static void esfq_destroy(struct Qdisc *sch)
++{
++      struct esfq_sched_data *q = qdisc_priv(sch);
++      esfq_q_destroy(q);
++}
++
++
++static void esfq_reset(struct Qdisc* sch)
++{
++      struct sk_buff *skb;
++
++      while ((skb = esfq_dequeue(sch)) != NULL)
++              kfree_skb(skb);
++}
++
++static void esfq_perturbation(unsigned long arg)
++{
++      struct Qdisc *sch = (struct Qdisc*)arg;
++      struct esfq_sched_data *q = qdisc_priv(sch);
++
++      q->perturbation = net_random()&0x1F;
++
++      if (q->perturb_period) {
++              q->perturb_timer.expires = jiffies + q->perturb_period;
++              add_timer(&q->perturb_timer);
++      }
++}
++
++static unsigned int esfq_check_hash(unsigned int kind)
++{
++      switch (kind) {
++      case TCA_SFQ_HASH_CTORIGDST:
++      case TCA_SFQ_HASH_CTORIGSRC:
++      case TCA_SFQ_HASH_CTREPLDST:
++      case TCA_SFQ_HASH_CTREPLSRC:
++      case TCA_SFQ_HASH_CTNATCHG:
++#ifndef CONFIG_NET_SCH_ESFQ_NFCT
++      {
++              if (net_ratelimit())
++                      printk(KERN_WARNING "ESFQ: Conntrack hash types disabled in kernel config. Falling back to classic.\n");
++              return TCA_SFQ_HASH_CLASSIC;
++      }
++#endif
++      case TCA_SFQ_HASH_CLASSIC:
++      case TCA_SFQ_HASH_DST:
++      case TCA_SFQ_HASH_SRC:
++      case TCA_SFQ_HASH_FWMARK:
++              return kind;
++      default:
++      {
++              if (net_ratelimit())
++                      printk(KERN_WARNING "ESFQ: Unknown hash type. Falling back to classic.\n");
++              return TCA_SFQ_HASH_CLASSIC;
++      }
++      }
++}
++
++static int esfq_q_init(struct esfq_sched_data *q, struct nlattr *opt)
++{
++      struct tc_esfq_qopt *ctl = nla_data(opt);
++      esfq_index p = ~0U/2;
++      int i;
++
++      if (opt && opt->nla_len < nla_attr_size(sizeof(*ctl)))
++              return -EINVAL;
++
++      q->perturbation = 0;
++      q->hash_kind = TCA_SFQ_HASH_CLASSIC;
++      q->max_depth = 0;
++      if (opt == NULL) {
++              q->perturb_period = 0;
++              q->hash_divisor = 1024;
++              q->tail = q->limit = q->depth = 128;
++
++      } else {
++              struct tc_esfq_qopt *ctl = nla_data(opt);
++              if (ctl->quantum)
++                      q->quantum = ctl->quantum;
++              q->perturb_period = ctl->perturb_period*HZ;
++              q->hash_divisor = ctl->divisor ? : 1024;
++              q->tail = q->limit = q->depth = ctl->flows ? : 128;
++
++              if ( q->depth > p - 1 )
++                      return -EINVAL;
++
++              if (ctl->limit)
++                      q->limit = min_t(u32, ctl->limit, q->depth);
++
++              if (ctl->hash_kind) {
++                      q->hash_kind = esfq_check_hash(ctl->hash_kind);
++              }
++      }
++
++      q->ht = kmalloc(q->hash_divisor*sizeof(esfq_index), GFP_KERNEL);
++      if (!q->ht)
++              goto err_case;
++      q->dep = kmalloc((1+q->depth*2)*sizeof(struct esfq_head), GFP_KERNEL);
++      if (!q->dep)
++              goto err_case;
++      q->next = kmalloc(q->depth*sizeof(esfq_index), GFP_KERNEL);
++      if (!q->next)
++              goto err_case;
++      q->allot = kmalloc(q->depth*sizeof(short), GFP_KERNEL);
++      if (!q->allot)
++              goto err_case;
++      q->hash = kmalloc(q->depth*sizeof(unsigned short), GFP_KERNEL);
++      if (!q->hash)
++              goto err_case;
++      q->qs = kmalloc(q->depth*sizeof(struct sk_buff_head), GFP_KERNEL);
++      if (!q->qs)
++              goto err_case;
++
++      for (i=0; i< q->hash_divisor; i++)
++              q->ht[i] = q->depth;
++      for (i=0; i<q->depth; i++) {
++              skb_queue_head_init(&q->qs[i]);
++              q->dep[i+q->depth].next = i+q->depth;
++              q->dep[i+q->depth].prev = i+q->depth;
++      }
++
++      for (i=0; i<q->depth; i++)
++              esfq_link(q, i);
++      return 0;
++err_case:
++      esfq_q_destroy(q);
++      return -ENOBUFS;
++}
++
++static int esfq_init(struct Qdisc *sch, struct nlattr *opt)
++{
++      struct esfq_sched_data *q = qdisc_priv(sch);
++      int err;
++
++      q->quantum = psched_mtu(qdisc_dev(sch)); /* default */
++      if ((err = esfq_q_init(q, opt)))
++              return err;
++
++      init_timer(&q->perturb_timer);
++      q->perturb_timer.data = (unsigned long)sch;
++      q->perturb_timer.function = esfq_perturbation;
++      if (q->perturb_period) {
++              q->perturb_timer.expires = jiffies + q->perturb_period;
++              add_timer(&q->perturb_timer);
++      }
++
++      return 0;
++}
++
++static int esfq_change(struct Qdisc *sch, struct nlattr *opt)
++{
++      struct esfq_sched_data *q = qdisc_priv(sch);
++      struct esfq_sched_data new;
++      struct sk_buff *skb;
++      int err;
++
++      /* set up new queue */
++      memset(&new, 0, sizeof(struct esfq_sched_data));
++      new.quantum = psched_mtu(qdisc_dev(sch)); /* default */
++      if ((err = esfq_q_init(&new, opt)))
++              return err;
++
++      /* copy all packets from the old queue to the new queue */
++      sch_tree_lock(sch);
++      while ((skb = esfq_q_dequeue(q)) != NULL)
++              esfq_q_enqueue(skb, &new, ESFQ_TAIL);
++
++      /* clean up the old queue */
++      esfq_q_destroy(q);
++
++      /* copy elements of the new queue into the old queue */
++      q->perturb_period = new.perturb_period;
++      q->quantum        = new.quantum;
++      q->limit          = new.limit;
++      q->depth          = new.depth;
++      q->hash_divisor   = new.hash_divisor;
++      q->hash_kind      = new.hash_kind;
++      q->tail           = new.tail;
++      q->max_depth      = new.max_depth;
++      q->ht    = new.ht;
++      q->dep   = new.dep;
++      q->next  = new.next;
++      q->allot = new.allot;
++      q->hash  = new.hash;
++      q->qs    = new.qs;
++
++      /* finish up */
++      if (q->perturb_period) {
++              q->perturb_timer.expires = jiffies + q->perturb_period;
++              add_timer(&q->perturb_timer);
++      } else {
++              q->perturbation = 0;
++      }
++      sch_tree_unlock(sch);
++      return 0;
++}
++
++static int esfq_dump(struct Qdisc *sch, struct sk_buff *skb)
++{
++      struct esfq_sched_data *q = qdisc_priv(sch);
++      unsigned char *b = skb_tail_pointer(skb);
++      struct tc_esfq_qopt opt;
++
++      opt.quantum = q->quantum;
++      opt.perturb_period = q->perturb_period/HZ;
++
++      opt.limit = q->limit;
++      opt.divisor = q->hash_divisor;
++      opt.flows = q->depth;
++      opt.hash_kind = q->hash_kind;
++
++      NLA_PUT(skb, TCA_OPTIONS, sizeof(opt), &opt);
++
++      return skb->len;
++
++nla_put_failure:
++      nlmsg_trim(skb, b);
++      return -1;
++}
++
++static struct Qdisc_ops esfq_qdisc_ops =
++{
++      .next           =       NULL,
++      .cl_ops         =       NULL,
++      .id             =       "esfq",
++      .priv_size      =       sizeof(struct esfq_sched_data),
++      .enqueue        =       esfq_enqueue,
++      .dequeue        =       esfq_dequeue,
++      .peek           =       esfq_peek,
++      .drop           =       esfq_drop,
++      .init           =       esfq_init,
++      .reset          =       esfq_reset,
++      .destroy        =       esfq_destroy,
++      .change         =       esfq_change,
++      .dump           =       esfq_dump,
++      .owner          =       THIS_MODULE,
++};
++
++static int __init esfq_module_init(void)
++{
++      return register_qdisc(&esfq_qdisc_ops);
++}
++static void __exit esfq_module_exit(void)
++{
++      unregister_qdisc(&esfq_qdisc_ops);
++}
++module_init(esfq_module_init)
++module_exit(esfq_module_exit)
++MODULE_LICENSE("GPL");

diff --git a/target/linux/generic/patches-3.0/621-sched_act_connmark.patch b/target/linux/generic/patches-3.0/621-sched_act_connmark.patch
new file mode 100644 (file)
index 0000000..9704565
--- /dev/null
+++ b/target/linux/generic/patches-3.0/621-sched_act_connmark.patch
@@ -0,0 +1,171 @@
+--- /dev/null
++++ b/net/sched/act_connmark.c
+@@ -0,0 +1,137 @@
++/*
++ * Copyright (c) 2011 Felix Fietkau <nbd@openwrt.org>
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms and conditions of the GNU General Public License,
++ * version 2, as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
++ * Place - Suite 330, Boston, MA 02111-1307 USA.
++ */
++
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/kernel.h>
++#include <linux/skbuff.h>
++#include <linux/rtnetlink.h>
++#include <linux/pkt_cls.h>
++#include <linux/ip.h>
++#include <linux/ipv6.h>
++#include <net/netlink.h>
++#include <net/pkt_sched.h>
++#include <net/act_api.h>
++
++#include <net/netfilter/nf_conntrack.h>
++#include <net/netfilter/nf_conntrack_core.h>
++
++#define TCA_ACT_CONNMARK      20
++
++#define CONNMARK_TAB_MASK     3
++static struct tcf_common *tcf_connmark_ht[CONNMARK_TAB_MASK + 1];
++static u32 connmark_idx_gen;
++static DEFINE_RWLOCK(connmark_lock);
++
++static struct tcf_hashinfo connmark_hash_info = {
++      .htab   =       tcf_connmark_ht,
++      .hmask  =       CONNMARK_TAB_MASK,
++      .lock   =       &connmark_lock,
++};
++
++static int tcf_connmark(struct sk_buff *skb, struct tc_action *a,
++                     struct tcf_result *res)
++{
++      struct nf_conn *c;
++      enum ip_conntrack_info ctinfo;
++      int proto;
++      int r;
++
++      if (skb->protocol == htons(ETH_P_IP)) {
++              if (skb->len < sizeof(struct iphdr))
++                      goto out;
++              proto = PF_INET;
++      } else if (skb->protocol == htons(ETH_P_IPV6)) {
++              if (skb->len < sizeof(struct ipv6hdr))
++                      goto out;
++              proto = PF_INET6;
++      } else
++              goto out;
++
++      r = nf_conntrack_in(dev_net(skb->dev), proto, NF_INET_PRE_ROUTING, skb);
++      if (r != NF_ACCEPT)
++              goto out;
++
++      c = nf_ct_get(skb, &ctinfo);
++      if (!c)
++              goto out;
++
++      skb->mark = c->mark;
++      nf_conntrack_put(skb->nfct);
++      skb->nfct = NULL;
++
++out:
++      return TC_ACT_PIPE;
++}
++
++static int tcf_connmark_init(struct nlattr *nla, struct nlattr *est,
++                       struct tc_action *a, int ovr, int bind)
++{
++      struct tcf_common *pc;
++
++      pc = tcf_hash_create(0, est, a, sizeof(*pc), bind,
++                           &connmark_idx_gen, &connmark_hash_info);
++      if (IS_ERR(pc))
++          return PTR_ERR(pc);
++
++      tcf_hash_insert(pc, &connmark_hash_info);
++
++      return ACT_P_CREATED;
++}
++
++static inline int tcf_connmark_cleanup(struct tc_action *a, int bind)
++{
++      if (a->priv)
++              return tcf_hash_release(a->priv, bind, &connmark_hash_info);
++      return 0;
++}
++
++static inline int tcf_connmark_dump(struct sk_buff *skb, struct tc_action *a,
++                              int bind, int ref)
++{
++      return skb->len;
++}
++
++static struct tc_action_ops act_connmark_ops = {
++      .kind           =       "connmark",
++      .hinfo          =       &connmark_hash_info,
++      .type           =       TCA_ACT_CONNMARK,
++      .capab          =       TCA_CAP_NONE,
++      .owner          =       THIS_MODULE,
++      .act            =       tcf_connmark,
++      .dump           =       tcf_connmark_dump,
++      .cleanup        =       tcf_connmark_cleanup,
++      .init           =       tcf_connmark_init,
++      .walk           =       tcf_generic_walker,
++};
++
++MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
++MODULE_DESCRIPTION("Connection tracking mark restoring");
++MODULE_LICENSE("GPL");
++
++static int __init connmark_init_module(void)
++{
++      return tcf_register_action(&act_connmark_ops);
++}
++
++static void __exit connmark_cleanup_module(void)
++{
++      tcf_unregister_action(&act_connmark_ops);
++}
++
++module_init(connmark_init_module);
++module_exit(connmark_cleanup_module);
+--- a/net/sched/Kconfig
++++ b/net/sched/Kconfig
+@@ -602,6 +602,18 @@ config NET_ACT_CSUM
+         To compile this code as a module, choose M here: the
+         module will be called act_csum.
+ 
++config NET_ACT_CONNMARK
++        tristate "Connection Tracking Marking"
++        depends on NET_CLS_ACT
++        depends on NF_CONNTRACK
++        ---help---
++        Say Y here to restore the connmark from a scheduler action
++
++        If unsure, say N.
++
++        To compile this code as a module, choose M here: the
++        module will be called act_connmark.
++
+ config NET_CLS_IND
+       bool "Incoming device classification"
+       depends on NET_CLS_U32 || NET_CLS_FW
+--- a/net/sched/Makefile
++++ b/net/sched/Makefile
+@@ -16,6 +16,7 @@ obj-$(CONFIG_NET_ACT_PEDIT)  += act_pedit
+ obj-$(CONFIG_NET_ACT_SIMP)    += act_simple.o
+ obj-$(CONFIG_NET_ACT_SKBEDIT) += act_skbedit.o
+ obj-$(CONFIG_NET_ACT_CSUM)    += act_csum.o
++obj-$(CONFIG_NET_ACT_CONNMARK)        += act_connmark.o
+ obj-$(CONFIG_NET_SCH_FIFO)    += sch_fifo.o
+ obj-$(CONFIG_NET_SCH_CBQ)     += sch_cbq.o
+ obj-$(CONFIG_NET_SCH_HTB)     += sch_htb.o

diff --git a/target/linux/generic/patches-3.0/630-packet_socket_type.patch b/target/linux/generic/patches-3.0/630-packet_socket_type.patch
new file mode 100644 (file)
index 0000000..934e195
--- /dev/null
+++ b/target/linux/generic/patches-3.0/630-packet_socket_type.patch
@@ -0,0 +1,132 @@
+This patch allows the user to specify desired packet types (outgoing,
+broadcast, unicast, etc.) on packet sockets via setsockopt.
+This can reduce the load in situations where only a limited number
+of packet types are necessary
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+--- a/include/linux/if_packet.h
++++ b/include/linux/if_packet.h
+@@ -29,6 +29,8 @@ struct sockaddr_ll {
+ /* These ones are invisible by user level */
+ #define PACKET_LOOPBACK               5               /* MC/BRD frame looped back */
+ #define PACKET_FASTROUTE      6               /* Fastrouted frame     */
++#define PACKET_MASK_ANY               0xffffffff      /* mask for packet type bits */
++
+ 
+ /* Packet socket options */
+ 
+@@ -49,6 +51,7 @@ struct sockaddr_ll {
+ #define PACKET_VNET_HDR                       15
+ #define PACKET_TX_TIMESTAMP           16
+ #define PACKET_TIMESTAMP              17
++#define PACKET_RECV_TYPE              18
+ 
+ struct tpacket_stats {
+       unsigned int    tp_packets;
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -210,6 +210,7 @@ struct packet_sock {
+       unsigned int            tp_loss:1;
+       unsigned int            tp_tstamp;
+       struct packet_type      prot_hook ____cacheline_aligned_in_smp;
++      unsigned int            pkt_type;
+ };
+ 
+ struct packet_skb_cb {
+@@ -354,6 +355,7 @@ static int packet_rcv_spkt(struct sk_buf
+ {
+       struct sock *sk;
+       struct sockaddr_pkt *spkt;
++      struct packet_sock *po;
+ 
+       /*
+        *      When we registered the protocol we saved the socket in the data
+@@ -361,6 +363,7 @@ static int packet_rcv_spkt(struct sk_buf
+        */
+ 
+       sk = pt->af_packet_priv;
++      po = pkt_sk(sk);
+ 
+       /*
+        *      Yank back the headers [hope the device set this
+@@ -373,7 +376,7 @@ static int packet_rcv_spkt(struct sk_buf
+        *      so that this procedure is noop.
+        */
+ 
+-      if (skb->pkt_type == PACKET_LOOPBACK)
++      if (!(po->pkt_type & (1 << skb->pkt_type)))
+               goto out;
+ 
+       if (!net_eq(dev_net(dev), sock_net(sk)))
+@@ -566,12 +569,12 @@ static int packet_rcv(struct sk_buff *sk
+       int skb_len = skb->len;
+       unsigned int snaplen, res;
+ 
+-      if (skb->pkt_type == PACKET_LOOPBACK)
+-              goto drop;
+-
+       sk = pt->af_packet_priv;
+       po = pkt_sk(sk);
+ 
++      if (!(po->pkt_type & (1 << skb->pkt_type)))
++              goto drop;
++
+       if (!net_eq(dev_net(dev), sock_net(sk)))
+               goto drop;
+ 
+@@ -687,12 +690,12 @@ static int tpacket_rcv(struct sk_buff *s
+       struct timespec ts;
+       struct skb_shared_hwtstamps *shhwtstamps = skb_hwtstamps(skb);
+ 
+-      if (skb->pkt_type == PACKET_LOOPBACK)
+-              goto drop;
+-
+       sk = pt->af_packet_priv;
+       po = pkt_sk(sk);
+ 
++      if (!(po->pkt_type & (1 << skb->pkt_type)))
++              goto drop;
++
+       if (!net_eq(dev_net(dev), sock_net(sk)))
+               goto drop;
+ 
+@@ -1529,6 +1532,7 @@ static int packet_create(struct net *net
+       spin_lock_init(&po->bind_lock);
+       mutex_init(&po->pg_vec_lock);
+       po->prot_hook.func = packet_rcv;
++      po->pkt_type = PACKET_MASK_ANY & ~(1 << PACKET_LOOPBACK);
+ 
+       if (sock->type == SOCK_PACKET)
+               po->prot_hook.func = packet_rcv_spkt;
+@@ -2102,6 +2106,16 @@ packet_setsockopt(struct socket *sock, i
+               po->tp_tstamp = val;
+               return 0;
+       }
++        case PACKET_RECV_TYPE:
++        {
++                unsigned int val;
++                if (optlen != sizeof(val))
++                        return -EINVAL;
++                if (copy_from_user(&val, optval, sizeof(val)))
++                        return -EFAULT;
++                po->pkt_type = val & ~PACKET_LOOPBACK;
++                return 0;
++        }
+       default:
+               return -ENOPROTOOPT;
+       }
+@@ -2159,6 +2173,13 @@ static int packet_getsockopt(struct sock
+ 
+               data = &val;
+               break;
++      case PACKET_RECV_TYPE:
++              if (len > sizeof(unsigned int))
++                      len = sizeof(unsigned int);
++              val = po->pkt_type;
++
++              data = &val;
++              break;
+       case PACKET_VERSION:
+               if (len > sizeof(int))
+                       len = sizeof(int);

diff --git a/target/linux/generic/patches-3.0/640-bridge_no_eap_forward.patch b/target/linux/generic/patches-3.0/640-bridge_no_eap_forward.patch
new file mode 100644 (file)
index 0000000..dac8982
--- /dev/null
+++ b/target/linux/generic/patches-3.0/640-bridge_no_eap_forward.patch
@@ -0,0 +1,15 @@
+--- a/net/bridge/br_input.c
++++ b/net/bridge/br_input.c
+@@ -77,7 +77,11 @@ int br_handle_frame_finish(struct sk_buf
+ 
+       dst = NULL;
+ 
+-      if (is_multicast_ether_addr(dest)) {
++      if (skb->protocol == htons(ETH_P_PAE)) {
++              skb2 = skb;
++              /* Do not forward 802.1x/EAP frames */
++              skb = NULL;
++      } else if (is_multicast_ether_addr(dest)) {
+               mdst = br_mdb_get(br, skb);
+               if (mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) {
+                       if ((mdst && mdst->mglist) ||

diff --git a/target/linux/generic/patches-3.0/641-bridge_always_accept_eap.patch b/target/linux/generic/patches-3.0/641-bridge_always_accept_eap.patch
new file mode 100644 (file)
index 0000000..b3a793e
--- /dev/null
+++ b/target/linux/generic/patches-3.0/641-bridge_always_accept_eap.patch
@@ -0,0 +1,11 @@
+--- a/net/bridge/br_input.c
++++ b/net/bridge/br_input.c
+@@ -64,7 +64,7 @@ int br_handle_frame_finish(struct sk_buf
+           br_multicast_rcv(br, p, skb))
+               goto drop;
+ 
+-      if (p->state == BR_STATE_LEARNING)
++      if ((p->state == BR_STATE_LEARNING) && skb->protocol != htons(ETH_P_PAE))
+               goto drop;
+ 
+       BR_INPUT_SKB_CB(skb)->brdev = br->dev;

diff --git a/target/linux/generic/patches-3.0/642-bridge_port_isolate.patch b/target/linux/generic/patches-3.0/642-bridge_port_isolate.patch
new file mode 100644 (file)
index 0000000..46ee5e9
--- /dev/null
+++ b/target/linux/generic/patches-3.0/642-bridge_port_isolate.patch
@@ -0,0 +1,103 @@
+--- a/net/bridge/br_private.h
++++ b/net/bridge/br_private.h
+@@ -133,6 +133,7 @@ struct net_bridge_port
+ 
+       unsigned long                   flags;
+ #define BR_HAIRPIN_MODE               0x00000001
++#define BR_ISOLATE_MODE               0x00000002
+ 
+ #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+       u32                             multicast_startup_queries_sent;
+--- a/net/bridge/br_sysfs_if.c
++++ b/net/bridge/br_sysfs_if.c
+@@ -149,6 +149,22 @@ static int store_hairpin_mode(struct net
+ static BRPORT_ATTR(hairpin_mode, S_IRUGO | S_IWUSR,
+                  show_hairpin_mode, store_hairpin_mode);
+ 
++static ssize_t show_isolate_mode(struct net_bridge_port *p, char *buf)
++{
++      int isolate_mode = (p->flags & BR_ISOLATE_MODE) ? 1 : 0;
++      return sprintf(buf, "%d\n", isolate_mode);
++}
++static ssize_t store_isolate_mode(struct net_bridge_port *p, unsigned long v)
++{
++      if (v)
++              p->flags |= BR_ISOLATE_MODE;
++      else
++              p->flags &= ~BR_ISOLATE_MODE;
++      return 0;
++}
++static BRPORT_ATTR(isolate_mode, S_IRUGO | S_IWUSR,
++                 show_isolate_mode, store_isolate_mode);
++
+ #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+ static ssize_t show_multicast_router(struct net_bridge_port *p, char *buf)
+ {
+@@ -181,6 +197,7 @@ static struct brport_attribute *brport_a
+       &brport_attr_hold_timer,
+       &brport_attr_flush,
+       &brport_attr_hairpin_mode,
++      &brport_attr_isolate_mode,
+ #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+       &brport_attr_multicast_router,
+ #endif
+--- a/net/bridge/br_input.c
++++ b/net/bridge/br_input.c
+@@ -95,7 +95,8 @@ int br_handle_frame_finish(struct sk_buf
+                       skb2 = skb;
+ 
+               br->dev->stats.multicast++;
+-      } else if ((dst = __br_fdb_get(br, dest)) && dst->is_local) {
++      } else if ((p->flags & BR_ISOLATE_MODE) ||
++                 ((dst = __br_fdb_get(br, dest)) && dst->is_local)) {
+               skb2 = skb;
+               /* Do not forward the packet since it's local. */
+               skb = NULL;
+--- a/net/bridge/br_forward.c
++++ b/net/bridge/br_forward.c
+@@ -109,7 +109,7 @@ void br_deliver(const struct net_bridge_
+ /* called with rcu_read_lock */
+ void br_forward(const struct net_bridge_port *to, struct sk_buff *skb, struct sk_buff *skb0)
+ {
+-      if (should_deliver(to, skb)) {
++      if (should_deliver(to, skb) && !(to->flags & BR_ISOLATE_MODE)) {
+               if (skb0)
+                       deliver_clone(to, skb, __br_forward);
+               else
+@@ -164,7 +164,8 @@ out:
+ static void br_flood(struct net_bridge *br, struct sk_buff *skb,
+                    struct sk_buff *skb0,
+                    void (*__packet_hook)(const struct net_bridge_port *p,
+-                                         struct sk_buff *skb))
++                                         struct sk_buff *skb),
++                   bool forward)
+ {
+       struct net_bridge_port *p;
+       struct net_bridge_port *prev;
+@@ -172,6 +173,9 @@ static void br_flood(struct net_bridge *
+       prev = NULL;
+ 
+       list_for_each_entry_rcu(p, &br->port_list, list) {
++              if (forward && (p->flags & BR_ISOLATE_MODE))
++                      continue;
++
+               prev = maybe_deliver(prev, p, skb, __packet_hook);
+               if (IS_ERR(prev))
+                       goto out;
+@@ -195,14 +199,14 @@ out:
+ /* called with rcu_read_lock */
+ void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb)
+ {
+-      br_flood(br, skb, NULL, __br_deliver);
++      br_flood(br, skb, NULL, __br_deliver, false);
+ }
+ 
+ /* called under bridge lock */
+ void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
+                     struct sk_buff *skb2)
+ {
+-      br_flood(br, skb, skb2, __br_forward);
++      br_flood(br, skb, skb2, __br_forward, true);
+ }
+ 
+ #ifdef CONFIG_BRIDGE_IGMP_SNOOPING

diff --git a/target/linux/generic/patches-3.0/650-pppoe_header_pad.patch b/target/linux/generic/patches-3.0/650-pppoe_header_pad.patch
new file mode 100644 (file)
index 0000000..4875d5f
--- /dev/null
+++ b/target/linux/generic/patches-3.0/650-pppoe_header_pad.patch
@@ -0,0 +1,20 @@
+--- a/drivers/net/pppoe.c
++++ b/drivers/net/pppoe.c
+@@ -855,7 +855,7 @@ static int pppoe_sendmsg(struct kiocb *i
+               goto end;
+ 
+ 
+-      skb = sock_wmalloc(sk, total_len + dev->hard_header_len + 32,
++      skb = sock_wmalloc(sk, total_len + dev->hard_header_len + 32 + NET_SKB_PAD,
+                          0, GFP_KERNEL);
+       if (!skb) {
+               error = -ENOMEM;
+@@ -863,7 +863,7 @@ static int pppoe_sendmsg(struct kiocb *i
+       }
+ 
+       /* Reserve space for headers. */
+-      skb_reserve(skb, dev->hard_header_len);
++      skb_reserve(skb, dev->hard_header_len + NET_SKB_PAD);
+       skb_reset_network_header(skb);
+ 
+       skb->dev = dev;

diff --git a/target/linux/generic/patches-3.0/651-wireless_mesh_header.patch b/target/linux/generic/patches-3.0/651-wireless_mesh_header.patch
new file mode 100644 (file)
index 0000000..48c4c2a
--- /dev/null
+++ b/target/linux/generic/patches-3.0/651-wireless_mesh_header.patch
@@ -0,0 +1,11 @@
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -148,7 +148,7 @@ static inline bool dev_xmit_complete(int
+  */
+ 
+ #if defined(CONFIG_WLAN) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
+-# if defined(CONFIG_MAC80211_MESH)
++# if 1 || defined(CONFIG_MAC80211_MESH)
+ #  define LL_MAX_HEADER 128
+ # else
+ #  define LL_MAX_HEADER 96

diff --git a/target/linux/generic/patches-3.0/652-atm_header_changes.patch b/target/linux/generic/patches-3.0/652-atm_header_changes.patch
new file mode 100644 (file)
index 0000000..238d6f8
--- /dev/null
+++ b/target/linux/generic/patches-3.0/652-atm_header_changes.patch
@@ -0,0 +1,12 @@
+--- a/include/linux/atm.h
++++ b/include/linux/atm.h
+@@ -139,6 +139,9 @@ struct atm_trafprm {
+       int             min_pcr;        /* minimum PCR in cells per second */
+       int             max_cdv;        /* maximum CDV in microseconds */
+       int             max_sdu;        /* maximum SDU in bytes */
++      int             scr;            /* sustained rate in cells per second */
++      int             mbs;            /* maximum burst size (MBS) in cells */
++      int             cdv;            /* Cell delay varition */
+         /* extra params for ABR */
+         unsigned int  icr;            /* Initial Cell Rate (24-bit) */
+         unsigned int  tbe;            /* Transient Buffer Exposure (24-bit) */ 

diff --git a/target/linux/generic/patches-3.0/700-swconfig.patch b/target/linux/generic/patches-3.0/700-swconfig.patch
new file mode 100644 (file)
index 0000000..6825037
--- /dev/null
+++ b/target/linux/generic/patches-3.0/700-swconfig.patch
@@ -0,0 +1,25 @@
+--- a/drivers/net/phy/Kconfig
++++ b/drivers/net/phy/Kconfig
+@@ -13,6 +13,12 @@ menuconfig PHYLIB
+ 
+ if PHYLIB
+ 
++config SWCONFIG
++      tristate "Switch configuration API"
++      ---help---
++        Switch configuration API using netlink. This allows
++        you to configure the VLAN features of certain switches.
++
+ comment "MII PHY device drivers"
+ 
+ config MARVELL_PHY
+--- a/drivers/net/phy/Makefile
++++ b/drivers/net/phy/Makefile
+@@ -3,6 +3,7 @@
+ libphy-objs                   := phy.o phy_device.o mdio_bus.o
+ 
+ obj-$(CONFIG_PHYLIB)          += libphy.o
++obj-$(CONFIG_SWCONFIG)                += swconfig.o
+ obj-$(CONFIG_MARVELL_PHY)     += marvell.o
+ obj-$(CONFIG_DAVICOM_PHY)     += davicom.o
+ obj-$(CONFIG_CICADA_PHY)      += cicada.o

diff --git a/target/linux/generic/patches-3.0/701-phy_extension.patch b/target/linux/generic/patches-3.0/701-phy_extension.patch
new file mode 100644 (file)
index 0000000..959f08d
--- /dev/null
+++ b/target/linux/generic/patches-3.0/701-phy_extension.patch
@@ -0,0 +1,72 @@
+--- a/drivers/net/phy/phy.c
++++ b/drivers/net/phy/phy.c
+@@ -299,6 +299,50 @@ int phy_ethtool_gset(struct phy_device *
+ }
+ EXPORT_SYMBOL(phy_ethtool_gset);
+ 
++int phy_ethtool_ioctl(struct phy_device *phydev, void *useraddr)
++{
++      u32 cmd;
++      int tmp;
++      struct ethtool_cmd ecmd = { ETHTOOL_GSET };
++      struct ethtool_value edata = { ETHTOOL_GLINK };
++
++      if (get_user(cmd, (u32 *) useraddr))
++              return -EFAULT;
++
++      switch (cmd) {
++      case ETHTOOL_GSET:
++              phy_ethtool_gset(phydev, &ecmd);
++              if (copy_to_user(useraddr, &ecmd, sizeof(ecmd)))
++                      return -EFAULT;
++              return 0;
++
++      case ETHTOOL_SSET:
++              if (copy_from_user(&ecmd, useraddr, sizeof(ecmd)))
++                      return -EFAULT;
++              return phy_ethtool_sset(phydev, &ecmd);
++
++      case ETHTOOL_NWAY_RST:
++              /* if autoneg is off, it's an error */
++              tmp = phy_read(phydev, MII_BMCR);
++              if (tmp & BMCR_ANENABLE) {
++                      tmp |= (BMCR_ANRESTART);
++                      phy_write(phydev, MII_BMCR, tmp);
++                      return 0;
++              }
++              return -EINVAL;
++
++      case ETHTOOL_GLINK:
++              edata.data = (phy_read(phydev,
++                              MII_BMSR) & BMSR_LSTATUS) ? 1 : 0;
++              if (copy_to_user(useraddr, &edata, sizeof(edata)))
++                      return -EFAULT;
++              return 0;
++      }
++
++      return -EOPNOTSUPP;
++}
++EXPORT_SYMBOL(phy_ethtool_ioctl);
++
+ /**
+  * phy_mii_ioctl - generic PHY MII ioctl interface
+  * @phydev: the phy_device struct
+@@ -474,7 +518,7 @@ static void phy_force_reduction(struct p
+       int idx;
+ 
+       idx = phy_find_setting(phydev->speed, phydev->duplex);
+-      
++
+       idx++;
+ 
+       idx = phy_find_valid(idx, phydev->supported);
+--- a/include/linux/phy.h
++++ b/include/linux/phy.h
+@@ -508,6 +508,7 @@ void phy_start_machine(struct phy_device
+ void phy_stop_machine(struct phy_device *phydev);
+ int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd);
+ int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd);
++int phy_ethtool_ioctl(struct phy_device *phydev, void *useraddr);
+ int phy_mii_ioctl(struct phy_device *phydev,
+               struct ifreq *ifr, int cmd);
+ int phy_start_interrupts(struct phy_device *phydev);

diff --git a/target/linux/generic/patches-3.0/702-phy_add_aneg_done_function.patch b/target/linux/generic/patches-3.0/702-phy_add_aneg_done_function.patch
new file mode 100644 (file)
index 0000000..776b768
--- /dev/null
+++ b/target/linux/generic/patches-3.0/702-phy_add_aneg_done_function.patch
@@ -0,0 +1,45 @@
+--- a/include/linux/phy.h
++++ b/include/linux/phy.h
+@@ -386,9 +386,18 @@ struct phy_driver {
+        */
+       int (*config_aneg)(struct phy_device *phydev);
+ 
++      /* Determine if autonegotiation is done */
++      int (*aneg_done)(struct phy_device *phydev);
++
+       /* Determines the negotiated speed and duplex */
+       int (*read_status)(struct phy_device *phydev);
+ 
++      /* 
++       * Update the value in phydev->link to reflect the 
++       * current link value
++       */
++      int (*update_link)(struct phy_device *phydev);
++
+       /* Clears any pending interrupts */
+       int (*ack_interrupt)(struct phy_device *phydev);
+ 
+--- a/drivers/net/phy/phy_device.c
++++ b/drivers/net/phy/phy_device.c
+@@ -719,6 +719,9 @@ int genphy_update_link(struct phy_device
+ {
+       int status;
+ 
++      if (phydev->drv->update_link)
++              return phydev->drv->update_link(phydev);
++
+       /* Do a fake read */
+       status = phy_read(phydev, MII_BMSR);
+ 
+--- a/drivers/net/phy/phy.c
++++ b/drivers/net/phy/phy.c
+@@ -106,6 +106,9 @@ static inline int phy_aneg_done(struct p
+ {
+       int retval;
+ 
++      if (phydev->drv->aneg_done)
++              return phydev->drv->aneg_done(phydev);
++
+       retval = phy_read(phydev, MII_BMSR);
+ 
+       return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE);

diff --git a/target/linux/generic/patches-3.0/720-phy_adm6996.patch b/target/linux/generic/patches-3.0/720-phy_adm6996.patch
new file mode 100644 (file)
index 0000000..5e1c076
--- /dev/null
+++ b/target/linux/generic/patches-3.0/720-phy_adm6996.patch
@@ -0,0 +1,26 @@
+--- a/drivers/net/phy/Kconfig
++++ b/drivers/net/phy/Kconfig
+@@ -97,6 +97,13 @@ config MICREL_PHY
+       ---help---
+         Supports the KSZ9021, VSC8201, KS8001 PHYs.
+ 
++config ADM6996_PHY
++      tristate "Driver for ADM6996 switches"
++      select SWCONFIG
++      ---help---
++        Currently supports the ADM6996FC and ADM6996M switches.
++        Support for FC is very limited.
++
+ config FIXED_PHY
+       bool "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs"
+       depends on PHYLIB=y
+--- a/drivers/net/phy/Makefile
++++ b/drivers/net/phy/Makefile
+@@ -14,6 +14,7 @@ obj-$(CONFIG_VITESSE_PHY)    += vitesse.o
+ obj-$(CONFIG_BROADCOM_PHY)    += broadcom.o
+ obj-$(CONFIG_BCM63XX_PHY)     += bcm63xx.o
+ obj-$(CONFIG_ICPLUS_PHY)      += icplus.o
++obj-$(CONFIG_ADM6996_PHY)     += adm6996.o
+ obj-$(CONFIG_REALTEK_PHY)     += realtek.o
+ obj-$(CONFIG_LSI_ET1011C_PHY) += et1011c.o
+ obj-$(CONFIG_FIXED_PHY)               += fixed.o

diff --git a/target/linux/generic/patches-3.0/721-phy_packets.patch b/target/linux/generic/patches-3.0/721-phy_packets.patch
new file mode 100644 (file)
index 0000000..ab86bbe
--- /dev/null
+++ b/target/linux/generic/patches-3.0/721-phy_packets.patch
@@ -0,0 +1,63 @@
+--- a/drivers/net/phy/phy_device.c
++++ b/drivers/net/phy/phy_device.c
+@@ -149,6 +149,18 @@ int phy_scan_fixups(struct phy_device *p
+ }
+ EXPORT_SYMBOL(phy_scan_fixups);
+ 
++static int generic_receive_skb(struct sk_buff *skb)
++{
++      skb->protocol = eth_type_trans(skb, skb->dev);
++      return netif_receive_skb(skb);
++}
++
++static int generic_rx(struct sk_buff *skb)
++{
++      skb->protocol = eth_type_trans(skb, skb->dev);
++      return netif_rx(skb);
++}
++
+ static struct phy_device* phy_device_create(struct mii_bus *bus,
+                                           int addr, int phy_id)
+ {
+@@ -180,6 +192,8 @@ static struct phy_device* phy_device_cre
+       dev_set_name(&dev->dev, PHY_ID_FMT, bus->id, addr);
+ 
+       dev->state = PHY_DOWN;
++      dev->netif_receive_skb = &generic_receive_skb;
++      dev->netif_rx = &generic_rx;
+ 
+       mutex_init(&dev->lock);
+       INIT_DELAYED_WORK(&dev->state_queue, phy_state_machine);
+--- a/include/linux/phy.h
++++ b/include/linux/phy.h
+@@ -332,6 +332,20 @@ struct phy_device {
+       void (*adjust_link)(struct net_device *dev);
+ 
+       void (*adjust_state)(struct net_device *dev);
++
++      /*
++       * By default these point to the original functions
++       * with the same name. adding them to the phy_device
++       * allows the phy driver to override them for packet
++       * mangling if the ethernet driver supports it
++       * This is required to support some really horrible
++       * switches such as the Marvell 88E6060
++       */
++      int (*netif_receive_skb)(struct sk_buff *skb);
++      int (*netif_rx)(struct sk_buff *skb);
++
++      /* alignment offset for packets */
++      int pkt_align;
+ };
+ #define to_phy_device(d) container_of(d, struct phy_device, dev)
+ 
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -1194,6 +1194,7 @@ struct net_device {
+       void                    *ax25_ptr;      /* AX.25 specific data */
+       struct wireless_dev     *ieee80211_ptr; /* IEEE 802.11 specific data,
+                                                  assign before registering */
++      void                    *phy_ptr; /* PHY device specific data */
+ 
+ /*
+  * Cache lines mostly used on receive path (including eth_type_trans())

diff --git a/target/linux/generic/patches-3.0/722-phy_mvswitch.patch b/target/linux/generic/patches-3.0/722-phy_mvswitch.patch
new file mode 100644 (file)
index 0000000..5a7b96a
--- /dev/null
+++ b/target/linux/generic/patches-3.0/722-phy_mvswitch.patch
@@ -0,0 +1,22 @@
+--- a/drivers/net/phy/Kconfig
++++ b/drivers/net/phy/Kconfig
+@@ -104,6 +104,9 @@ config ADM6996_PHY
+         Currently supports the ADM6996FC and ADM6996M switches.
+         Support for FC is very limited.
+ 
++config MVSWITCH_PHY
++      tristate "Driver for Marvell 88E6060 switches"
++
+ config FIXED_PHY
+       bool "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs"
+       depends on PHYLIB=y
+--- a/drivers/net/phy/Makefile
++++ b/drivers/net/phy/Makefile
+@@ -15,6 +15,7 @@ obj-$(CONFIG_BROADCOM_PHY)   += broadcom.o
+ obj-$(CONFIG_BCM63XX_PHY)     += bcm63xx.o
+ obj-$(CONFIG_ICPLUS_PHY)      += icplus.o
+ obj-$(CONFIG_ADM6996_PHY)     += adm6996.o
++obj-$(CONFIG_MVSWITCH_PHY)    += mvswitch.o
+ obj-$(CONFIG_REALTEK_PHY)     += realtek.o
+ obj-$(CONFIG_LSI_ET1011C_PHY) += et1011c.o
+ obj-$(CONFIG_FIXED_PHY)               += fixed.o

diff --git a/target/linux/generic/patches-3.0/723-phy_ip175c.patch b/target/linux/generic/patches-3.0/723-phy_ip175c.patch
new file mode 100644 (file)
index 0000000..22a56ed
--- /dev/null
+++ b/target/linux/generic/patches-3.0/723-phy_ip175c.patch
@@ -0,0 +1,23 @@
+--- a/drivers/net/phy/Kconfig
++++ b/drivers/net/phy/Kconfig
+@@ -107,6 +107,10 @@ config ADM6996_PHY
+ config MVSWITCH_PHY
+       tristate "Driver for Marvell 88E6060 switches"
+ 
++config IP17XX_PHY
++      tristate "Driver for IC+ IP17xx switches"
++      select SWCONFIG
++
+ config FIXED_PHY
+       bool "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs"
+       depends on PHYLIB=y
+--- a/drivers/net/phy/Makefile
++++ b/drivers/net/phy/Makefile
+@@ -16,6 +16,7 @@ obj-$(CONFIG_BCM63XX_PHY)    += bcm63xx.o
+ obj-$(CONFIG_ICPLUS_PHY)      += icplus.o
+ obj-$(CONFIG_ADM6996_PHY)     += adm6996.o
+ obj-$(CONFIG_MVSWITCH_PHY)    += mvswitch.o
++obj-$(CONFIG_IP17XX_PHY)      += ip17xx.o
+ obj-$(CONFIG_REALTEK_PHY)     += realtek.o
+ obj-$(CONFIG_LSI_ET1011C_PHY) += et1011c.o
+ obj-$(CONFIG_FIXED_PHY)               += fixed.o

diff --git a/target/linux/generic/patches-3.0/724-phy_ar8216.patch b/target/linux/generic/patches-3.0/724-phy_ar8216.patch
new file mode 100644 (file)
index 0000000..c375a97
--- /dev/null
+++ b/target/linux/generic/patches-3.0/724-phy_ar8216.patch
@@ -0,0 +1,23 @@
+--- a/drivers/net/phy/Kconfig
++++ b/drivers/net/phy/Kconfig
+@@ -111,6 +111,10 @@ config IP17XX_PHY
+       tristate "Driver for IC+ IP17xx switches"
+       select SWCONFIG
+ 
++config AR8216_PHY
++      tristate "Driver for Atheros AR8216 switches"
++      select SWCONFIG
++
+ config FIXED_PHY
+       bool "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs"
+       depends on PHYLIB=y
+--- a/drivers/net/phy/Makefile
++++ b/drivers/net/phy/Makefile
+@@ -18,6 +18,7 @@ obj-$(CONFIG_ADM6996_PHY)    += adm6996.o
+ obj-$(CONFIG_MVSWITCH_PHY)    += mvswitch.o
+ obj-$(CONFIG_IP17XX_PHY)      += ip17xx.o
+ obj-$(CONFIG_REALTEK_PHY)     += realtek.o
++obj-$(CONFIG_AR8216_PHY)      += ar8216.o
+ obj-$(CONFIG_LSI_ET1011C_PHY) += et1011c.o
+ obj-$(CONFIG_FIXED_PHY)               += fixed.o
+ obj-$(CONFIG_MDIO_BITBANG)    += mdio-bitbang.o

diff --git a/target/linux/generic/patches-3.0/725-phy_rtl8306.patch b/target/linux/generic/patches-3.0/725-phy_rtl8306.patch
new file mode 100644 (file)
index 0000000..e97b84d
--- /dev/null
+++ b/target/linux/generic/patches-3.0/725-phy_rtl8306.patch
@@ -0,0 +1,23 @@
+--- a/drivers/net/phy/Kconfig
++++ b/drivers/net/phy/Kconfig
+@@ -115,6 +115,10 @@ config AR8216_PHY
+       tristate "Driver for Atheros AR8216 switches"
+       select SWCONFIG
+ 
++config RTL8306_PHY
++      tristate "Driver for Realtek RTL8306S switches"
++      select SWCONFIG
++
+ config FIXED_PHY
+       bool "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs"
+       depends on PHYLIB=y
+--- a/drivers/net/phy/Makefile
++++ b/drivers/net/phy/Makefile
+@@ -19,6 +19,7 @@ obj-$(CONFIG_MVSWITCH_PHY)   += mvswitch.o
+ obj-$(CONFIG_IP17XX_PHY)      += ip17xx.o
+ obj-$(CONFIG_REALTEK_PHY)     += realtek.o
+ obj-$(CONFIG_AR8216_PHY)      += ar8216.o
++obj-$(CONFIG_RTL8306_PHY)     += rtl8306.o
+ obj-$(CONFIG_LSI_ET1011C_PHY) += et1011c.o
+ obj-$(CONFIG_FIXED_PHY)               += fixed.o
+ obj-$(CONFIG_MDIO_BITBANG)    += mdio-bitbang.o

diff --git a/target/linux/generic/patches-3.0/726-phy_rtl8366.patch b/target/linux/generic/patches-3.0/726-phy_rtl8366.patch
new file mode 100644 (file)
index 0000000..34ac10e
--- /dev/null
+++ b/target/linux/generic/patches-3.0/726-phy_rtl8366.patch
@@ -0,0 +1,44 @@
+--- a/drivers/net/phy/Kconfig
++++ b/drivers/net/phy/Kconfig
+@@ -157,4 +157,29 @@ config MDIO_OCTEON
+ 
+         If in doubt, say Y.
+ 
++config RTL8366_SMI
++      tristate "Driver for the RTL8366 SMI interface"
++      depends on GENERIC_GPIO
++      ---help---
++        This module implements the SMI interface protocol which is used
++        by some RTL8366 ethernet switch devices via the generic GPIO API.
++
++if RTL8366_SMI
++
++config RTL8366S_PHY
++      tristate "Driver for the Realtek RTL8366S switch"
++      select SWCONFIG
++
++config RTL8366RB_PHY
++      tristate "Driver for the Realtek RTL8366RB switch"
++      select SWCONFIG
++
++config RTL8366S_PHY_DEBUG_FS
++      bool "RTL8366 switch driver DEBUG_FS support"
++      depends on RTL8366S_PHY || RTL8366RB_PHY
++      depends on DEBUG_FS
++      default n
++
++endif # RTL8366_SMI
++
+ endif # PHYLIB
+--- a/drivers/net/phy/Makefile
++++ b/drivers/net/phy/Makefile
+@@ -20,6 +20,9 @@ obj-$(CONFIG_IP17XX_PHY)     += ip17xx.o
+ obj-$(CONFIG_REALTEK_PHY)     += realtek.o
+ obj-$(CONFIG_AR8216_PHY)      += ar8216.o
+ obj-$(CONFIG_RTL8306_PHY)     += rtl8306.o
++obj-$(CONFIG_RTL8366_SMI)     += rtl8366_smi.o
++obj-$(CONFIG_RTL8366S_PHY)    += rtl8366s.o
++obj-$(CONFIG_RTL8366RB_PHY)   += rtl8366rb.o
+ obj-$(CONFIG_LSI_ET1011C_PHY) += et1011c.o
+ obj-$(CONFIG_FIXED_PHY)               += fixed.o
+ obj-$(CONFIG_MDIO_BITBANG)    += mdio-bitbang.o

diff --git a/target/linux/generic/patches-3.0/750-hostap_txpower.patch b/target/linux/generic/patches-3.0/750-hostap_txpower.patch
new file mode 100644 (file)
index 0000000..374a284
--- /dev/null
+++ b/target/linux/generic/patches-3.0/750-hostap_txpower.patch
@@ -0,0 +1,154 @@
+--- a/drivers/net/wireless/hostap/hostap_ap.c
++++ b/drivers/net/wireless/hostap/hostap_ap.c
+@@ -2338,13 +2338,13 @@ int prism2_ap_get_sta_qual(local_info_t
+               addr[count].sa_family = ARPHRD_ETHER;
+               memcpy(addr[count].sa_data, sta->addr, ETH_ALEN);
+               if (sta->last_rx_silence == 0)
+-                      qual[count].qual = sta->last_rx_signal < 27 ?
+-                              0 : (sta->last_rx_signal - 27) * 92 / 127;
++                        qual[count].qual = (sta->last_rx_signal - 156) == 0 ?
++                                0 : (sta->last_rx_signal - 156) * 92 / 64;
+               else
+-                      qual[count].qual = sta->last_rx_signal -
+-                              sta->last_rx_silence - 35;
+-              qual[count].level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal);
+-              qual[count].noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence);
++                        qual[count].qual = (sta->last_rx_signal -
++                                sta->last_rx_silence) * 92 / 64;
++                qual[count].level = sta->last_rx_signal;
++                qual[count].noise = sta->last_rx_silence;
+               qual[count].updated = sta->last_rx_updated;
+ 
+               sta->last_rx_updated = IW_QUAL_DBM;
+@@ -2410,13 +2410,13 @@ int prism2_ap_translate_scan(struct net_
+               memset(&iwe, 0, sizeof(iwe));
+               iwe.cmd = IWEVQUAL;
+               if (sta->last_rx_silence == 0)
+-                      iwe.u.qual.qual = sta->last_rx_signal < 27 ?
+-                              0 : (sta->last_rx_signal - 27) * 92 / 127;
++                      iwe.u.qual.qual = (sta->last_rx_signal -156) == 0 ?
++                              0 : (sta->last_rx_signal - 156) * 92 / 64;
+               else
+-                      iwe.u.qual.qual = sta->last_rx_signal -
+-                              sta->last_rx_silence - 35;
+-              iwe.u.qual.level = HFA384X_LEVEL_TO_dBm(sta->last_rx_signal);
+-              iwe.u.qual.noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence);
++                        iwe.u.qual.qual = (sta->last_rx_signal -
++                                sta->last_rx_silence) * 92 / 64;
++                iwe.u.qual.level = sta->last_rx_signal;
++                iwe.u.qual.noise = sta->last_rx_silence;
+               iwe.u.qual.updated = sta->last_rx_updated;
+               iwe.len = IW_EV_QUAL_LEN;
+               current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+--- a/drivers/net/wireless/hostap/hostap_config.h
++++ b/drivers/net/wireless/hostap/hostap_config.h
+@@ -45,4 +45,9 @@
+  */
+ /* #define PRISM2_NO_STATION_MODES */
+ 
++/* Enable TX power Setting functions
++ * (min att = -128 , max att =  127)
++ */
++#define RAW_TXPOWER_SETTING
++
+ #endif /* HOSTAP_CONFIG_H */
+--- a/drivers/net/wireless/hostap/hostap.h
++++ b/drivers/net/wireless/hostap/hostap.h
+@@ -90,6 +90,7 @@ extern const struct iw_handler_def hosta
+ extern const struct ethtool_ops prism2_ethtool_ops;
+ 
+ int hostap_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
++int hostap_restore_power(struct net_device *dev);
+ 
+ 
+ #endif /* HOSTAP_H */
+--- a/drivers/net/wireless/hostap/hostap_hw.c
++++ b/drivers/net/wireless/hostap/hostap_hw.c
+@@ -932,6 +932,7 @@ static int hfa384x_set_rid(struct net_de
+                       prism2_hw_reset(dev);
+       }
+ 
++      hostap_restore_power(dev);
+       return res;
+ }
+ 
+--- a/drivers/net/wireless/hostap/hostap_info.c
++++ b/drivers/net/wireless/hostap/hostap_info.c
+@@ -433,6 +433,11 @@ static void handle_info_queue_linkstatus
+       }
+ 
+       /* Get BSSID if we have a valid AP address */
++
++      if ( val == HFA384X_LINKSTATUS_CONNECTED ||
++           val == HFA384X_LINKSTATUS_DISCONNECTED )
++                      hostap_restore_power(local->dev);
++
+       if (connected) {
+               netif_carrier_on(local->dev);
+               netif_carrier_on(local->ddev);
+--- a/drivers/net/wireless/hostap/hostap_ioctl.c
++++ b/drivers/net/wireless/hostap/hostap_ioctl.c
+@@ -1477,23 +1477,20 @@ static int prism2_txpower_hfa386x_to_dBm
+               val = 255;
+ 
+       tmp = val;
+-      tmp >>= 2;
+ 
+-      return -12 - tmp;
++      return tmp;
+ }
+ 
+ static u16 prism2_txpower_dBm_to_hfa386x(int val)
+ {
+       signed char tmp;
+ 
+-      if (val > 20)
+-              return 128;
+-      else if (val < -43)
++      if (val > 127)
+               return 127;
++      else if (val < -128)
++              return 128;
+ 
+       tmp = val;
+-      tmp = -12 - tmp;
+-      tmp <<= 2;
+ 
+       return (unsigned char) tmp;
+ }
+@@ -4056,3 +4053,35 @@ int hostap_ioctl(struct net_device *dev,
+ 
+       return ret;
+ }
++
++/* BUG FIX: Restore power setting value when lost due to F/W bug */
++
++int hostap_restore_power(struct net_device *dev)
++{
++        struct hostap_interface *iface = netdev_priv(dev);
++       local_info_t *local = iface->local;
++
++       u16 val;
++       int ret = 0;
++
++       if (local->txpower_type == PRISM2_TXPOWER_OFF) {
++                       val = 0xff; /* use all standby and sleep modes */
++                       ret = local->func->cmd(dev, HFA384X_CMDCODE_WRITEMIF,
++                                              HFA386X_CR_A_D_TEST_MODES2,
++                                              &val, NULL);
++       }
++
++#ifdef RAW_TXPOWER_SETTING
++       if (local->txpower_type == PRISM2_TXPOWER_FIXED) {
++               val = HFA384X_TEST_CFG_BIT_ALC;
++               local->func->cmd(dev, HFA384X_CMDCODE_TEST |
++                                (HFA384X_TEST_CFG_BITS << 8), 0, &val, NULL);
++               val = prism2_txpower_dBm_to_hfa386x(local->txpower);
++               ret = (local->func->cmd(dev, HFA384X_CMDCODE_WRITEMIF,
++                            HFA386X_CR_MANUAL_TX_POWER, &val, NULL));
++       }
++#endif /* RAW_TXPOWER_SETTING */
++       return (ret ? -EOPNOTSUPP : 0);
++}
++
++EXPORT_SYMBOL(hostap_restore_power);

diff --git a/target/linux/generic/patches-3.0/810-pci_disable_common_quirks.patch b/target/linux/generic/patches-3.0/810-pci_disable_common_quirks.patch
new file mode 100644 (file)
index 0000000..6d3b18b
--- /dev/null
+++ b/target/linux/generic/patches-3.0/810-pci_disable_common_quirks.patch
@@ -0,0 +1,43 @@
+--- a/drivers/pci/Kconfig
++++ b/drivers/pci/Kconfig
+@@ -62,6 +62,12 @@ config XEN_PCIDEV_FE_DEBUG
+ 
+         When in doubt, say N.
+ 
++config PCI_DISABLE_COMMON_QUIRKS
++      bool "PCI disable common quirks"
++      depends on PCI
++      help
++        If you don't know what to do here, say N.
++
+ config HT_IRQ
+       bool "Interrupts on hypertransport devices"
+       default y
+--- a/drivers/pci/quirks.c
++++ b/drivers/pci/quirks.c
+@@ -104,6 +104,7 @@ static void __devinit quirk_mmio_always_
+ }
+ DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, quirk_mmio_always_on);
+ 
++#ifndef CONFIG_PCI_DISABLE_COMMON_QUIRKS
+ /* The Mellanox Tavor device gives false positive parity errors
+  * Mark this device with a broken_parity_status, to allow
+  * PCI scanning code to "skip" this now blacklisted device.
+@@ -1989,7 +1990,9 @@ static void __devinit fixup_rev1_53c810(
+       }
+ }
+ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
++#endif /* !CONFIG_PCI_DISABLE_COMMON_QUIRKS */
+ 
++#ifndef CONFIG_PCI_DISABLE_COMMON_QUIRKS
+ /* Enable 1k I/O space granularity on the Intel P64H2 */
+ static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev)
+ {
+@@ -2665,6 +2668,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AT
+                       quirk_msi_intx_disable_bug);
+ 
+ #endif /* CONFIG_PCI_MSI */
++#endif /* !CONFIG_PCI_DISABLE_COMMON_QUIRKS */
+ 
+ /* Allow manual resource allocation for PCI hotplug bridges
+  * via pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For

diff --git a/target/linux/generic/patches-3.0/811-pci_disable_usb_common_quirks.patch b/target/linux/generic/patches-3.0/811-pci_disable_usb_common_quirks.patch
new file mode 100644 (file)
index 0000000..7561c3b
--- /dev/null
+++ b/target/linux/generic/patches-3.0/811-pci_disable_usb_common_quirks.patch
@@ -0,0 +1,18 @@
+
+--- a/drivers/usb/host/pci-quirks.c
++++ b/drivers/usb/host/pci-quirks.c
+@@ -427,6 +427,8 @@ reset_needed:
+ }
+ EXPORT_SYMBOL_GPL(uhci_check_and_reset_hc);
+ 
++#ifndef CONFIG_PCI_DISABLE_COMMON_QUIRKS
++
+ static inline int io_type_enabled(struct pci_dev *pdev, unsigned int mask)
+ {
+       u16 cmd;
+@@ -841,3 +843,5 @@ static void __devinit quirk_usb_early_ha
+               quirk_usb_handoff_xhci(pdev);
+ }
+ DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_usb_early_handoff);
++
++#endif

diff --git a/target/linux/generic/patches-3.0/820-usb_add_usb_find_device_by_name.patch b/target/linux/generic/patches-3.0/820-usb_add_usb_find_device_by_name.patch
new file mode 100644 (file)
index 0000000..3aeda67
--- /dev/null
+++ b/target/linux/generic/patches-3.0/820-usb_add_usb_find_device_by_name.patch
@@ -0,0 +1,84 @@
+--- a/drivers/usb/core/usb.c
++++ b/drivers/usb/core/usb.c
+@@ -651,6 +651,71 @@ int __usb_get_extra_descriptor(char *buf
+ }
+ EXPORT_SYMBOL_GPL(__usb_get_extra_descriptor);
+ 
++static struct usb_device *match_device_name(struct usb_device *dev,
++                                          const char *name)
++{
++      struct usb_device *ret_dev = NULL;
++      int child;
++
++      dev_dbg(&dev->dev, "check for name %s ...\n", name);
++
++      /* see if this device matches */
++      if (strcmp(dev_name(&dev->dev), name) == 0 ) {
++              dev_dbg(&dev->dev, "matched this device!\n");
++              ret_dev = usb_get_dev(dev);
++              goto exit;
++      }
++
++      /* look through all of the children of this device */
++      for (child = 0; child < dev->maxchild; ++child) {
++              if (dev->children[child]) {
++                      usb_lock_device(dev->children[child]);
++                      ret_dev = match_device_name(dev->children[child], name);
++                      usb_unlock_device(dev->children[child]);
++                      if (ret_dev)
++                              goto exit;
++              }
++      }
++exit:
++      return ret_dev;
++}
++
++/**
++ * usb_find_device_by_name - find a specific usb device in the system
++ * @name: the name of the device to find
++ *
++ * Returns a pointer to a struct usb_device if such a specified usb
++ * device is present in the system currently.  The usage count of the
++ * device will be incremented if a device is found.  Make sure to call
++ * usb_put_dev() when the caller is finished with the device.
++ *
++ * If a device with the specified bus id is not found, NULL is returned.
++ */
++struct usb_device *usb_find_device_by_name(const char *name)
++{
++      struct list_head *buslist;
++      struct usb_bus *bus;
++      struct usb_device *dev = NULL;
++
++      mutex_lock(&usb_bus_list_lock);
++      for (buslist = usb_bus_list.next;
++           buslist != &usb_bus_list;
++           buslist = buslist->next) {
++              bus = container_of(buslist, struct usb_bus, bus_list);
++              if (!bus->root_hub)
++                      continue;
++              usb_lock_device(bus->root_hub);
++              dev = match_device_name(bus->root_hub, name);
++              usb_unlock_device(bus->root_hub);
++              if (dev)
++                      goto exit;
++      }
++exit:
++      mutex_unlock(&usb_bus_list_lock);
++      return dev;
++}
++EXPORT_SYMBOL_GPL(usb_find_device_by_name);
++
+ /**
+  * usb_alloc_coherent - allocate dma-consistent buffer for URB_NO_xxx_DMA_MAP
+  * @dev: device the buffer will be used with
+--- a/include/linux/usb.h
++++ b/include/linux/usb.h
+@@ -513,6 +513,7 @@ extern int usb_lock_device_for_reset(str
+ extern int usb_reset_device(struct usb_device *dev);
+ extern void usb_queue_reset_device(struct usb_interface *dev);
+ 
++extern struct usb_device *usb_find_device_by_name(const char *name);
+ 
+ /* USB autosuspend and autoresume */
+ #ifdef CONFIG_USB_SUSPEND

diff --git a/target/linux/generic/patches-3.0/821-usb_serial_endpoint_size.patch b/target/linux/generic/patches-3.0/821-usb_serial_endpoint_size.patch
new file mode 100644 (file)
index 0000000..3dd419f
--- /dev/null
+++ b/target/linux/generic/patches-3.0/821-usb_serial_endpoint_size.patch
@@ -0,0 +1,26 @@
+--- a/drivers/usb/serial/usb-serial.c
++++ b/drivers/usb/serial/usb-serial.c
+@@ -61,6 +61,7 @@ static struct usb_driver usb_serial_driv
+    drivers depend on it.
+ */
+ 
++static ushort maxSize = 0;
+ static int debug;
+ /* initially all NULL */
+ static struct usb_serial *serial_table[SERIAL_TTY_MINORS];
+@@ -912,7 +913,8 @@ int usb_serial_probe(struct usb_interfac
+                       goto probe_error;
+               }
+               buffer_size = max_t(int, serial->type->bulk_in_size,
+-                              le16_to_cpu(endpoint->wMaxPacketSize));
++                                       min_t(int, le16_to_cpu(endpoint->wMaxPacketSize),
++                                                  maxSize));
+               port->bulk_in_size = buffer_size;
+               port->bulk_in_endpointAddress = endpoint->bEndpointAddress;
+               port->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
+@@ -1391,3 +1393,5 @@ MODULE_LICENSE("GPL");
+ 
+ module_param(debug, bool, S_IRUGO | S_IWUSR);
+ MODULE_PARM_DESC(debug, "Debug enabled or not");
++module_param(maxSize, ushort,0);
++MODULE_PARM_DESC(maxSize,"User specified USB endpoint size");

diff --git a/target/linux/generic/patches-3.0/830-ledtrig_morse.patch b/target/linux/generic/patches-3.0/830-ledtrig_morse.patch
new file mode 100644 (file)
index 0000000..7e99cdb
--- /dev/null
+++ b/target/linux/generic/patches-3.0/830-ledtrig_morse.patch
@@ -0,0 +1,18 @@
+--- a/drivers/leds/Kconfig
++++ b/drivers/leds/Kconfig
+@@ -469,4 +469,8 @@ config LEDS_TRIGGER_DEFAULT_ON
+ comment "iptables trigger is under Netfilter config (LED target)"
+       depends on LEDS_TRIGGERS
+ 
++config LEDS_TRIGGER_MORSE
++      tristate "LED Morse Trigger"
++      depends on LEDS_TRIGGERS
++
+ endif # NEW_LEDS
+--- a/drivers/leds/Makefile
++++ b/drivers/leds/Makefile
+@@ -54,3 +54,4 @@ obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) +=
+ obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT)  += ledtrig-backlight.o
+ obj-$(CONFIG_LEDS_TRIGGER_GPIO)               += ledtrig-gpio.o
+ obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o
++obj-$(CONFIG_LEDS_TRIGGER_MORSE)      += ledtrig-morse.o

diff --git a/target/linux/generic/patches-3.0/831-ledtrig_netdev.patch b/target/linux/generic/patches-3.0/831-ledtrig_netdev.patch
new file mode 100644 (file)
index 0000000..e3bef95
--- /dev/null
+++ b/target/linux/generic/patches-3.0/831-ledtrig_netdev.patch
@@ -0,0 +1,43 @@
+--- a/drivers/leds/Kconfig
++++ b/drivers/leds/Kconfig
+@@ -473,4 +473,11 @@ config LEDS_TRIGGER_MORSE
+       tristate "LED Morse Trigger"
+       depends on LEDS_TRIGGERS
+ 
++config LEDS_TRIGGER_NETDEV
++      tristate "LED Netdev Trigger"
++      depends on NET && LEDS_TRIGGERS
++      help
++        This allows LEDs to be controlled by network device activity.
++        If unsure, say Y.
++
+ endif # NEW_LEDS
+--- a/drivers/leds/Makefile
++++ b/drivers/leds/Makefile
+@@ -55,3 +55,4 @@ obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT) +=
+ obj-$(CONFIG_LEDS_TRIGGER_GPIO)               += ledtrig-gpio.o
+ obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o
+ obj-$(CONFIG_LEDS_TRIGGER_MORSE)      += ledtrig-morse.o
++obj-$(CONFIG_LEDS_TRIGGER_NETDEV)     += ledtrig-netdev.o
+--- a/drivers/leds/ledtrig-netdev.c
++++ b/drivers/leds/ledtrig-netdev.c
+@@ -307,8 +307,9 @@ done:
+ static void netdev_trig_timer(unsigned long arg)
+ {
+       struct led_netdev_data *trigger_data = (struct led_netdev_data *)arg;
+-      const struct net_device_stats *dev_stats;
++      struct rtnl_link_stats64 *dev_stats;
+       unsigned new_activity;
++      struct rtnl_link_stats64 temp;
+ 
+       write_lock(&trigger_data->lock);
+ 
+@@ -318,7 +319,7 @@ static void netdev_trig_timer(unsigned l
+               goto no_restart;
+       }
+ 
+-      dev_stats = dev_get_stats(trigger_data->net_dev);
++      dev_stats = dev_get_stats(trigger_data->net_dev, &temp);
+       new_activity =
+               ((trigger_data->mode & MODE_TX) ? dev_stats->tx_packets : 0) +
+               ((trigger_data->mode & MODE_RX) ? dev_stats->rx_packets : 0);

diff --git a/target/linux/generic/patches-3.0/832-ledtrig_usbdev.patch b/target/linux/generic/patches-3.0/832-ledtrig_usbdev.patch
new file mode 100644 (file)
index 0000000..59ecfaa
--- /dev/null
+++ b/target/linux/generic/patches-3.0/832-ledtrig_usbdev.patch
@@ -0,0 +1,21 @@
+--- a/drivers/leds/Kconfig
++++ b/drivers/leds/Kconfig
+@@ -480,4 +480,11 @@ config LEDS_TRIGGER_NETDEV
+         This allows LEDs to be controlled by network device activity.
+         If unsure, say Y.
+ 
++config LEDS_TRIGGER_USBDEV
++      tristate "LED USB device Trigger"
++      depends on USB && LEDS_TRIGGERS
++      help
++        This allows LEDs to be controlled by the presence/activity of
++        an USB device. If unsure, say N.
++
+ endif # NEW_LEDS
+--- a/drivers/leds/Makefile
++++ b/drivers/leds/Makefile
+@@ -56,3 +56,4 @@ obj-$(CONFIG_LEDS_TRIGGER_GPIO)              += ledt
+ obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o
+ obj-$(CONFIG_LEDS_TRIGGER_MORSE)      += ledtrig-morse.o
+ obj-$(CONFIG_LEDS_TRIGGER_NETDEV)     += ledtrig-netdev.o
++obj-$(CONFIG_LEDS_TRIGGER_USBDEV)     += ledtrig-usbdev.o

diff --git a/target/linux/generic/patches-3.0/833-gpio_buttons.patch b/target/linux/generic/patches-3.0/833-gpio_buttons.patch
new file mode 100644 (file)
index 0000000..bd5219c
--- /dev/null
+++ b/target/linux/generic/patches-3.0/833-gpio_buttons.patch
@@ -0,0 +1,31 @@
+--- a/drivers/input/misc/Kconfig
++++ b/drivers/input/misc/Kconfig
+@@ -478,4 +478,20 @@ config INPUT_XEN_KBDDEV_FRONTEND
+         To compile this driver as a module, choose M here: the
+         module will be called xen-kbdfront.
+ 
++config INPUT_GPIO_BUTTONS
++      tristate "Polled GPIO buttons interface"
++      depends on GENERIC_GPIO
++      select INPUT_POLLDEV
++      help
++        This driver implements support for buttons connected
++        to GPIO pins of various CPUs (and some other chips).
++
++        Say Y here if your device has buttons connected
++        directly to such GPIO pins.  Your board-specific
++        setup logic must also provide a platform device,
++        with configuration data saying which GPIOs are used.
++
++        To compile this driver as a module, choose M here: the
++        module will be called gpio-buttons.
++
+ endif
+--- a/drivers/input/misc/Makefile
++++ b/drivers/input/misc/Makefile
+@@ -45,4 +45,5 @@ obj-$(CONFIG_INPUT_WISTRON_BTNS)     += wist
+ obj-$(CONFIG_INPUT_WM831X_ON)         += wm831x-on.o
+ obj-$(CONFIG_INPUT_XEN_KBDDEV_FRONTEND)       += xen-kbdfront.o
+ obj-$(CONFIG_INPUT_YEALINK)           += yealink.o
++obj-$(CONFIG_INPUT_GPIO_BUTTONS)      += gpio_buttons.o
+ 

diff --git a/target/linux/generic/patches-3.0/834-gpio_ioctl.patch b/target/linux/generic/patches-3.0/834-gpio_ioctl.patch
new file mode 100644 (file)
index 0000000..3b70632
--- /dev/null
+++ b/target/linux/generic/patches-3.0/834-gpio_ioctl.patch
@@ -0,0 +1,11 @@
+--- a/drivers/char/gpio_dev.c
++++ b/drivers/char/gpio_dev.c
+@@ -114,7 +114,7 @@ gpio_close(struct inode * inode, struct
+ }
+ 
+ struct file_operations gpio_fops = {
+-      ioctl:          gpio_ioctl,
++      unlocked_ioctl: gpio_ioctl,
+       open:           gpio_open,
+       release:        gpio_close
+ };

diff --git a/target/linux/generic/patches-3.0/835-gpiodev.patch b/target/linux/generic/patches-3.0/835-gpiodev.patch
new file mode 100644 (file)
index 0000000..f41d5a6
--- /dev/null
+++ b/target/linux/generic/patches-3.0/835-gpiodev.patch
@@ -0,0 +1,27 @@
+--- a/drivers/char/Kconfig
++++ b/drivers/char/Kconfig
+@@ -511,6 +511,14 @@ config NSC_GPIO
+         pc8736x_gpio drivers.  If those drivers are built as
+         modules, this one will be too, named nsc_gpio
+ 
++config GPIO_DEVICE
++      tristate "GPIO device support"
++      depends on GENERIC_GPIO
++      help
++        Say Y to enable Linux GPIO device support.  This allows control of
++        GPIO pins using a character device
++
++
+ config RAW_DRIVER
+       tristate "RAW driver (/dev/raw/rawN)"
+       depends on BLOCK
+--- a/drivers/char/Makefile
++++ b/drivers/char/Makefile
+@@ -47,6 +47,7 @@ obj-$(CONFIG_NWFLASH)                += nwflash.o
+ obj-$(CONFIG_SCx200_GPIO)     += scx200_gpio.o
+ obj-$(CONFIG_PC8736x_GPIO)    += pc8736x_gpio.o
+ obj-$(CONFIG_NSC_GPIO)                += nsc_gpio.o
++obj-$(CONFIG_GPIO_DEVICE)     += gpio_dev.o
+ obj-$(CONFIG_GPIO_TB0219)     += tb0219.o
+ obj-$(CONFIG_TELCLOCK)                += tlclk.o
+ 

diff --git a/target/linux/generic/patches-3.0/840-rtc7301.patch b/target/linux/generic/patches-3.0/840-rtc7301.patch
new file mode 100644 (file)
index 0000000..8f279ce
--- /dev/null
+++ b/target/linux/generic/patches-3.0/840-rtc7301.patch
@@ -0,0 +1,250 @@
+--- a/drivers/rtc/Kconfig
++++ b/drivers/rtc/Kconfig
+@@ -719,6 +719,15 @@ config RTC_DRV_NUC900
+         If you say yes here you get support for the RTC subsystem of the
+         NUC910/NUC920 used in embedded systems.
+ 
++config RTC_DRV_RTC7301
++      tristate "Epson RTC-7301 SF/DG"
++      help
++        If you say Y here you will get support for the
++        Epson RTC-7301 SF/DG RTC chips.
++
++        This driver can also be built as a module. If so, the module
++        will be called rtc-7301.
++
+ comment "on-CPU RTC drivers"
+ 
+ config RTC_DRV_DAVINCI
+--- a/drivers/rtc/Makefile
++++ b/drivers/rtc/Makefile
+@@ -85,6 +85,7 @@ obj-$(CONFIG_RTC_DRV_RP5C01) += rtc-rp5c
+ obj-$(CONFIG_RTC_DRV_RS5C313) += rtc-rs5c313.o
+ obj-$(CONFIG_RTC_DRV_RS5C348) += rtc-rs5c348.o
+ obj-$(CONFIG_RTC_DRV_RS5C372) += rtc-rs5c372.o
++obj-$(CONFIG_RTC_DRV_RTC7301) += rtc-rtc7301.o
+ obj-$(CONFIG_RTC_DRV_RV3029C2)        += rtc-rv3029c2.o
+ obj-$(CONFIG_RTC_DRV_RX8025)  += rtc-rx8025.o
+ obj-$(CONFIG_RTC_DRV_RX8581)  += rtc-rx8581.o
+--- /dev/null
++++ b/drivers/rtc/rtc-rtc7301.c
+@@ -0,0 +1,219 @@
++/*
++ * Driver for Epson RTC-7301SF/DG
++ *
++ * Copyright (C) 2009 Jose Vasconcellos
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/module.h>
++#include <linux/rtc.h>
++#include <linux/platform_device.h>
++#include <linux/io.h>
++#include <linux/delay.h>
++#include <linux/bcd.h>
++
++#define RTC_NAME "rtc7301"
++#define RTC_VERSION "0.1"
++
++/* Epson RTC-7301 register addresses */
++#define RTC7301_SEC           0x00
++#define RTC7301_SEC10         0x01
++#define RTC7301_MIN           0x02
++#define RTC7301_MIN10         0x03
++#define RTC7301_HOUR          0x04
++#define RTC7301_HOUR10                0x05
++#define RTC7301_WEEKDAY               0x06
++#define RTC7301_DAY           0x07
++#define RTC7301_DAY10         0x08
++#define RTC7301_MON           0x09
++#define RTC7301_MON10         0x0A
++#define RTC7301_YEAR          0x0B
++#define RTC7301_YEAR10                0x0C
++#define RTC7301_YEAR100               0x0D
++#define RTC7301_YEAR1000      0x0E
++#define RTC7301_CTRLREG               0x0F
++
++static uint8_t __iomem *rtc7301_base;
++
++#define read_reg(offset) (readb(rtc7301_base + offset) & 0xf)
++#define write_reg(offset, data) writeb(data, rtc7301_base + (offset))
++
++#define rtc7301_isbusy() (read_reg(RTC7301_CTRLREG) & 1)
++
++static void rtc7301_init_settings(void)
++{
++      int i;
++
++      write_reg(RTC7301_CTRLREG, 2);
++      write_reg(RTC7301_YEAR1000, 2);
++      udelay(122);
++
++      /* bank 1 */
++      write_reg(RTC7301_CTRLREG, 6);
++      for (i=0; i<15; i++)
++              write_reg(i, 0);
++
++      /* bank 2 */
++      write_reg(RTC7301_CTRLREG, 14);
++      for (i=0; i<15; i++)
++              write_reg(i, 0);
++      write_reg(RTC7301_CTRLREG, 0);
++}
++
++static int rtc7301_get_datetime(struct device *dev, struct rtc_time *dt)
++{
++      int cnt;
++      uint8_t buf[16];
++
++      cnt = 0;
++      while (rtc7301_isbusy()) {
++              udelay(244);
++              if (cnt++ > 100) {
++                      dev_err(dev, "%s: timeout error %x\n", __func__, rtc7301_base[RTC7301_CTRLREG]);
++                      return -EIO;
++              }
++      }
++
++      for (cnt=0; cnt<16; cnt++)
++              buf[cnt] = read_reg(cnt);
++
++      if (buf[RTC7301_SEC10] & 8) {
++              dev_err(dev, "%s: RTC not set\n", __func__);
++              return -EINVAL;
++      }
++
++      memset(dt, 0, sizeof(*dt));
++
++      dt->tm_sec =  buf[RTC7301_SEC] + buf[RTC7301_SEC10]*10;
++      dt->tm_min =  buf[RTC7301_MIN] + buf[RTC7301_MIN10]*10;
++      dt->tm_hour = buf[RTC7301_HOUR] + buf[RTC7301_HOUR10]*10;
++
++      dt->tm_mday = buf[RTC7301_DAY] + buf[RTC7301_DAY10]*10;
++      dt->tm_mon =  buf[RTC7301_MON] + buf[RTC7301_MON10]*10 - 1;
++      dt->tm_year = buf[RTC7301_YEAR] + buf[RTC7301_YEAR10]*10 +
++                    buf[RTC7301_YEAR100]*100 +
++                    ((buf[RTC7301_YEAR1000] & 3)*1000) - 1900;
++
++      /* the rtc device may contain illegal values on power up
++       * according to the data sheet. make sure they are valid.
++       */
++
++      return rtc_valid_tm(dt);
++}
++
++static int rtc7301_set_datetime(struct device *dev, struct rtc_time *dt)
++{
++      int data;
++
++      data = dt->tm_year + 1900;
++      if (data >= 2100 || data < 1900)
++              return -EINVAL;
++
++      write_reg(RTC7301_CTRLREG, 2);
++              udelay(122);
++
++      data = bin2bcd(dt->tm_sec);
++      write_reg(RTC7301_SEC, data);
++      write_reg(RTC7301_SEC10, (data >> 4));
++
++      data = bin2bcd(dt->tm_min);
++      write_reg(RTC7301_MIN, data );
++      write_reg(RTC7301_MIN10, (data >> 4));
++
++      data = bin2bcd(dt->tm_hour);
++      write_reg(RTC7301_HOUR, data);
++      write_reg(RTC7301_HOUR10, (data >> 4));
++
++      data = bin2bcd(dt->tm_mday);
++      write_reg(RTC7301_DAY, data);
++      write_reg(RTC7301_DAY10, (data>> 4));
++
++      data = bin2bcd(dt->tm_mon + 1);
++      write_reg(RTC7301_MON, data);
++      write_reg(RTC7301_MON10, (data >> 4));
++
++      data = bin2bcd(dt->tm_year % 100);
++      write_reg(RTC7301_YEAR, data);
++      write_reg(RTC7301_YEAR10, (data >> 4));
++      data = bin2bcd((1900 + dt->tm_year) / 100);
++      write_reg(RTC7301_YEAR100, data);
++
++      data = bin2bcd(dt->tm_wday);
++      write_reg(RTC7301_WEEKDAY, data);
++
++      write_reg(RTC7301_CTRLREG, 0);
++
++      return 0;
++}
++
++static const struct rtc_class_ops rtc7301_rtc_ops = {
++      .read_time      = rtc7301_get_datetime,
++      .set_time       = rtc7301_set_datetime,
++};
++
++static int __devinit rtc7301_probe(struct platform_device *pdev)
++{
++      struct rtc_device *rtc;
++      struct resource *res;
++
++      res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++      if (!res)
++              return -ENOENT;
++
++      rtc7301_base = ioremap_nocache(res->start, 0x1000 /*res->end - res->start + 1*/);
++      if (!rtc7301_base)
++              return -EINVAL;
++
++      rtc = rtc_device_register(RTC_NAME, &pdev->dev,
++                              &rtc7301_rtc_ops, THIS_MODULE);
++      if (IS_ERR(rtc)) {
++              iounmap(rtc7301_base);
++              return PTR_ERR(rtc);
++      }
++
++      platform_set_drvdata(pdev, rtc);
++
++      rtc7301_init_settings();
++      return 0;
++}
++
++static int __devexit rtc7301_remove(struct platform_device *pdev)
++{
++      struct rtc_device *rtc = platform_get_drvdata(pdev);
++
++      if (rtc)
++              rtc_device_unregister(rtc);
++      if (rtc7301_base)
++              iounmap(rtc7301_base);
++      return 0;
++}
++
++static struct platform_driver rtc7301_driver = {
++      .driver = {
++              .name   = RTC_NAME,
++              .owner  = THIS_MODULE,
++      },
++      .probe  = rtc7301_probe,
++      .remove = __devexit_p(rtc7301_remove),
++};
++
++static __init int rtc7301_init(void)
++{
++      return platform_driver_register(&rtc7301_driver);
++}
++module_init(rtc7301_init);
++
++static __exit void rtc7301_exit(void)
++{
++      platform_driver_unregister(&rtc7301_driver);
++}
++module_exit(rtc7301_exit);
++
++MODULE_DESCRIPTION("Epson 7301 RTC driver");
++MODULE_AUTHOR("Jose Vasconcellos <jvasco@verizon.net>");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:" RTC_NAME);
++MODULE_VERSION(RTC_VERSION);

diff --git a/target/linux/generic/patches-3.0/850-glamo_headers.patch b/target/linux/generic/patches-3.0/850-glamo_headers.patch
new file mode 100644 (file)
index 0000000..e7e053d
--- /dev/null
+++ b/target/linux/generic/patches-3.0/850-glamo_headers.patch
@@ -0,0 +1,21 @@
+--- a/include/linux/fb.h
++++ b/include/linux/fb.h
+@@ -125,6 +125,7 @@
+ #define FB_ACCEL_TRIDENT_BLADE3D 52   /* Trident Blade3D              */
+ #define FB_ACCEL_TRIDENT_BLADEXP 53   /* Trident BladeXP              */
+ #define FB_ACCEL_CIRRUS_ALPINE   53   /* Cirrus Logic 543x/544x/5480  */
++#define FB_ACCEL_GLAMO                50      /* SMedia Glamo                 */
+ #define FB_ACCEL_NEOMAGIC_NM2070 90   /* NeoMagic NM2070              */
+ #define FB_ACCEL_NEOMAGIC_NM2090 91   /* NeoMagic NM2090              */
+ #define FB_ACCEL_NEOMAGIC_NM2093 92   /* NeoMagic NM2093              */
+--- a/include/linux/Kbuild
++++ b/include/linux/Kbuild
+@@ -143,6 +143,8 @@ header-y += generic_serial.h
+ header-y += genetlink.h
+ header-y += gfs2_ondisk.h
+ header-y += gigaset_dev.h
++header-y += glamofb.h
++header-y += glamo-engine.h
+ header-y += hdlc.h
+ header-y += hdlcdrv.h
+ header-y += hdreg.h

diff --git a/target/linux/generic/patches-3.0/860-01_hotpluggable_spi_gpio.patch b/target/linux/generic/patches-3.0/860-01_hotpluggable_spi_gpio.patch
new file mode 100644 (file)
index 0000000..f8e6374
--- /dev/null
+++ b/target/linux/generic/patches-3.0/860-01_hotpluggable_spi_gpio.patch
@@ -0,0 +1,60 @@
+Fix spi-gpio for hotplug.
+
+--mb
+
+
+
+--- a/drivers/spi/spi_gpio.c
++++ b/drivers/spi/spi_gpio.c
+@@ -255,7 +255,7 @@ static void spi_gpio_cleanup(struct spi_
+       spi_bitbang_cleanup(spi);
+ }
+ 
+-static int __init spi_gpio_alloc(unsigned pin, const char *label, bool is_in)
++static int __devinit spi_gpio_alloc(unsigned pin, const char *label, bool is_in)
+ {
+       int value;
+ 
+@@ -269,7 +269,7 @@ static int __init spi_gpio_alloc(unsigne
+       return value;
+ }
+ 
+-static int __init
++static int __devinit
+ spi_gpio_request(struct spi_gpio_platform_data *pdata, const char *label,
+       u16 *res_flags)
+ {
+@@ -311,7 +311,7 @@ done:
+       return value;
+ }
+ 
+-static int __init spi_gpio_probe(struct platform_device *pdev)
++static int __devinit spi_gpio_probe(struct platform_device *pdev)
+ {
+       int                             status;
+       struct spi_master               *master;
+@@ -379,7 +379,7 @@ gpio_free:
+       return status;
+ }
+ 
+-static int __exit spi_gpio_remove(struct platform_device *pdev)
++static int __devexit spi_gpio_remove(struct platform_device *pdev)
+ {
+       struct spi_gpio                 *spi_gpio;
+       struct spi_gpio_platform_data   *pdata;
+@@ -408,12 +408,13 @@ MODULE_ALIAS("platform:" DRIVER_NAME);
+ static struct platform_driver spi_gpio_driver = {
+       .driver.name    = DRIVER_NAME,
+       .driver.owner   = THIS_MODULE,
+-      .remove         = __exit_p(spi_gpio_remove),
++      .probe          = spi_gpio_probe,
++      .remove         = __devexit_p(spi_gpio_remove),
+ };
+ 
+ static int __init spi_gpio_init(void)
+ {
+-      return platform_driver_probe(&spi_gpio_driver, spi_gpio_probe);
++      return platform_driver_register(&spi_gpio_driver);
+ }
+ module_init(spi_gpio_init);
+ 

diff --git a/target/linux/generic/patches-3.0/861-04_spi_gpio_implement_spi_delay.patch b/target/linux/generic/patches-3.0/861-04_spi_gpio_implement_spi_delay.patch
new file mode 100644 (file)
index 0000000..4b145c2
--- /dev/null
+++ b/target/linux/generic/patches-3.0/861-04_spi_gpio_implement_spi_delay.patch
@@ -0,0 +1,58 @@
+Implement the SPI-GPIO delay function for busses that need speed limitation.
+
+--mb
+
+
+
+--- a/drivers/spi/spi_gpio.c
++++ b/drivers/spi/spi_gpio.c
+@@ -21,6 +21,7 @@
+ #include <linux/init.h>
+ #include <linux/platform_device.h>
+ #include <linux/gpio.h>
++#include <linux/delay.h>
+ 
+ #include <linux/spi/spi.h>
+ #include <linux/spi/spi_bitbang.h>
+@@ -69,6 +70,7 @@ struct spi_gpio {
+  *            #define SPI_MOSI_GPIO   120
+  *            #define SPI_SCK_GPIO    121
+  *            #define SPI_N_CHIPSEL   4
++ *            #undef NEED_SPIDELAY
+  *            #include "spi_gpio.c"
+  */
+ 
+@@ -76,6 +78,7 @@ struct spi_gpio {
+ #define DRIVER_NAME   "spi_gpio"
+ 
+ #define GENERIC_BITBANG       /* vs tight inlines */
++#define NEED_SPIDELAY 1
+ 
+ /* all functions referencing these symbols must define pdata */
+ #define SPI_MISO_GPIO ((pdata)->miso)
+@@ -120,12 +123,20 @@ static inline int getmiso(const struct s
+ #undef pdata
+ 
+ /*
+- * NOTE:  this clocks "as fast as we can".  It "should" be a function of the
+- * requested device clock.  Software overhead means we usually have trouble
+- * reaching even one Mbit/sec (except when we can inline bitops), so for now
+- * we'll just assume we never need additional per-bit slowdowns.
++ * NOTE:  to clock "as fast as we can", set spi_device.max_speed_hz
++ * and spi_transfer.speed_hz to 0.
++ * Otherwise this is a function of the requested device clock.
++ * Software overhead means we usually have trouble
++ * reaching even one Mbit/sec (except when we can inline bitops). So on small
++ * embedded devices with fast SPI slaves you usually don't need a delay.
+  */
+-#define spidelay(nsecs)       do {} while (0)
++static inline void spidelay(unsigned nsecs)
++{
++#ifdef NEED_SPIDELAY
++      if (unlikely(nsecs))
++              ndelay(nsecs);
++#endif /* NEED_SPIDELAY */
++}
+ 
+ #include "spi_bitbang_txrx.h"
+ 

diff --git a/target/linux/generic/patches-3.0/862-gpio_spi_driver.patch b/target/linux/generic/patches-3.0/862-gpio_spi_driver.patch
new file mode 100644 (file)
index 0000000..6b46738
--- /dev/null
+++ b/target/linux/generic/patches-3.0/862-gpio_spi_driver.patch
@@ -0,0 +1,373 @@
+THIS CODE IS DEPRECATED.
+
+Please use the new mainline SPI-GPIO driver, as of 2.6.29.
+
+--mb
+
+
+
+---
+ drivers/spi/Kconfig              |    9 +
+ drivers/spi/Makefile             |    1 
+ drivers/spi/spi_gpio_old.c       |  251 +++++++++++++++++++++++++++++++++++++++
+ include/linux/spi/spi_gpio_old.h |   73 +++++++++++
+ 4 files changed, 334 insertions(+)
+
+--- /dev/null
++++ b/include/linux/spi/spi_gpio_old.h
+@@ -0,0 +1,73 @@
++/*
++ * spi_gpio interface to platform code
++ *
++ * Copyright (c) 2008 Piotr Skamruk
++ * Copyright (c) 2008 Michael Buesch
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++#ifndef _LINUX_SPI_SPI_GPIO
++#define _LINUX_SPI_SPI_GPIO
++
++#include <linux/types.h>
++#include <linux/spi/spi.h>
++
++
++/**
++ * struct spi_gpio_platform_data - Data definitions for a SPI-GPIO device.
++ *
++ * This structure holds information about a GPIO-based SPI device.
++ *
++ * @pin_clk: The GPIO pin number of the CLOCK pin.
++ *
++ * @pin_miso: The GPIO pin number of the MISO pin.
++ *
++ * @pin_mosi: The GPIO pin number of the MOSI pin.
++ *
++ * @pin_cs: The GPIO pin number of the CHIPSELECT pin.
++ *
++ * @cs_activelow: If true, the chip is selected when the CS line is low.
++ *
++ * @no_spi_delay: If true, no delay is done in the lowlevel bitbanging.
++ *                Note that doing no delay is not standards compliant,
++ *                but it might be needed to speed up transfers on some
++ *                slow embedded machines.
++ *
++ * @boardinfo_setup: This callback is called after the
++ *                   SPI master device was registered, but before the
++ *                   device is registered.
++ * @boardinfo_setup_data: Data argument passed to boardinfo_setup().
++ */
++struct spi_gpio_platform_data {
++      unsigned int pin_clk;
++      unsigned int pin_miso;
++      unsigned int pin_mosi;
++      unsigned int pin_cs;
++      bool cs_activelow;
++      bool no_spi_delay;
++      int (*boardinfo_setup)(struct spi_board_info *bi,
++                             struct spi_master *master,
++                             void *data);
++      void *boardinfo_setup_data;
++};
++
++/**
++ * SPI_GPIO_PLATDEV_NAME - The platform device name string.
++ *
++ * The name string that has to be used for platform_device_alloc
++ * when allocating a spi-gpio device.
++ */
++#define SPI_GPIO_PLATDEV_NAME "spi-gpio"
++
++/**
++ * spi_gpio_next_id - Get another platform device ID number.
++ *
++ * This returns the next platform device ID number that has to be used
++ * for platform_device_alloc. The ID is opaque and should not be used for
++ * anything else.
++ */
++int spi_gpio_next_id(void);
++
++#endif /* _LINUX_SPI_SPI_GPIO */
+--- /dev/null
++++ b/drivers/spi/spi_gpio_old.c
+@@ -0,0 +1,251 @@
++/*
++ * Bitbanging SPI bus driver using GPIO API
++ *
++ * Copyright (c) 2008 Piotr Skamruk
++ * Copyright (c) 2008 Michael Buesch
++ *
++ * based on spi_s3c2410_gpio.c
++ *   Copyright (c) 2006 Ben Dooks
++ *   Copyright (c) 2006 Simtec Electronics
++ * and on i2c-gpio.c
++ *   Copyright (C) 2007 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/delay.h>
++#include <linux/spinlock.h>
++#include <linux/workqueue.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/spi/spi.h>
++#include <linux/spi/spi_bitbang.h>
++#include <linux/spi/spi_gpio_old.h>
++#include <linux/gpio.h>
++#include <asm/atomic.h>
++
++
++struct spi_gpio {
++      struct spi_bitbang bitbang;
++      struct spi_gpio_platform_data *info;
++      struct platform_device *pdev;
++      struct spi_board_info bi;
++};
++
++
++static inline struct spi_gpio *spidev_to_sg(struct spi_device *dev)
++{
++      return dev->controller_data;
++}
++
++static inline void setsck(struct spi_device *dev, int val)
++{
++      struct spi_gpio *sp = spidev_to_sg(dev);
++      gpio_set_value(sp->info->pin_clk, val ? 1 : 0);
++}
++
++static inline void setmosi(struct spi_device *dev, int val)
++{
++      struct spi_gpio *sp = spidev_to_sg(dev);
++      gpio_set_value(sp->info->pin_mosi, val ? 1 : 0);
++}
++
++static inline u32 getmiso(struct spi_device *dev)
++{
++      struct spi_gpio *sp = spidev_to_sg(dev);
++      return gpio_get_value(sp->info->pin_miso) ? 1 : 0;
++}
++
++static inline void do_spidelay(struct spi_device *dev, unsigned nsecs)
++{
++      struct spi_gpio *sp = spidev_to_sg(dev);
++
++      if (!sp->info->no_spi_delay)
++              ndelay(nsecs);
++}
++
++#define spidelay(nsecs) do {                                  \
++      /* Steal the spi_device pointer from our caller.        \
++       * The bitbang-API should probably get fixed here... */ \
++      do_spidelay(spi, nsecs);                                \
++  } while (0)
++
++#define EXPAND_BITBANG_TXRX
++#include "spi_bitbang_txrx.h"
++
++static u32 spi_gpio_txrx_mode0(struct spi_device *spi,
++                             unsigned nsecs, u32 word, u8 bits)
++{
++      return bitbang_txrx_be_cpha0(spi, nsecs, 0, 0, word, bits);
++}
++
++static u32 spi_gpio_txrx_mode1(struct spi_device *spi,
++                             unsigned nsecs, u32 word, u8 bits)
++{
++      return bitbang_txrx_be_cpha1(spi, nsecs, 0, 0, word, bits);
++}
++
++static u32 spi_gpio_txrx_mode2(struct spi_device *spi,
++                             unsigned nsecs, u32 word, u8 bits)
++{
++      return bitbang_txrx_be_cpha0(spi, nsecs, 1, 0, word, bits);
++}
++
++static u32 spi_gpio_txrx_mode3(struct spi_device *spi,
++                             unsigned nsecs, u32 word, u8 bits)
++{
++      return bitbang_txrx_be_cpha1(spi, nsecs, 1, 0, word, bits);
++}
++
++static void spi_gpio_chipselect(struct spi_device *dev, int on)
++{
++      struct spi_gpio *sp = spidev_to_sg(dev);
++
++      if (sp->info->cs_activelow)
++              on = !on;
++      gpio_set_value(sp->info->pin_cs, on ? 1 : 0);
++}
++
++static int spi_gpio_probe(struct platform_device *pdev)
++{
++      struct spi_master *master;
++      struct spi_gpio_platform_data *pdata;
++      struct spi_gpio *sp;
++      struct spi_device *spidev;
++      int err;
++
++      pdata = pdev->dev.platform_data;
++      if (!pdata)
++              return -ENXIO;
++
++      err = -ENOMEM;
++      master = spi_alloc_master(&pdev->dev, sizeof(struct spi_gpio));
++      if (!master)
++              goto err_alloc_master;
++
++      sp = spi_master_get_devdata(master);
++      platform_set_drvdata(pdev, sp);
++      sp->info = pdata;
++
++      err = gpio_request(pdata->pin_clk, "spi_clock");
++      if (err)
++              goto err_request_clk;
++      err = gpio_request(pdata->pin_mosi, "spi_mosi");
++      if (err)
++              goto err_request_mosi;
++      err = gpio_request(pdata->pin_miso, "spi_miso");
++      if (err)
++              goto err_request_miso;
++      err = gpio_request(pdata->pin_cs, "spi_cs");
++      if (err)
++              goto err_request_cs;
++
++      sp->bitbang.master = spi_master_get(master);
++      sp->bitbang.master->bus_num = -1;
++      sp->bitbang.master->num_chipselect = 1;
++      sp->bitbang.chipselect = spi_gpio_chipselect;
++      sp->bitbang.txrx_word[SPI_MODE_0] = spi_gpio_txrx_mode0;
++      sp->bitbang.txrx_word[SPI_MODE_1] = spi_gpio_txrx_mode1;
++      sp->bitbang.txrx_word[SPI_MODE_2] = spi_gpio_txrx_mode2;
++      sp->bitbang.txrx_word[SPI_MODE_3] = spi_gpio_txrx_mode3;
++
++      gpio_direction_output(pdata->pin_clk, 0);
++      gpio_direction_output(pdata->pin_mosi, 0);
++      gpio_direction_output(pdata->pin_cs,
++                            pdata->cs_activelow ? 1 : 0);
++      gpio_direction_input(pdata->pin_miso);
++
++      err = spi_bitbang_start(&sp->bitbang);
++      if (err)
++              goto err_no_bitbang;
++      err = pdata->boardinfo_setup(&sp->bi, master,
++                                   pdata->boardinfo_setup_data);
++      if (err)
++              goto err_bi_setup;
++      sp->bi.controller_data = sp;
++      spidev = spi_new_device(master, &sp->bi);
++      if (!spidev)
++              goto err_new_dev;
++
++      return 0;
++
++err_new_dev:
++err_bi_setup:
++      spi_bitbang_stop(&sp->bitbang);
++err_no_bitbang:
++      spi_master_put(sp->bitbang.master);
++      gpio_free(pdata->pin_cs);
++err_request_cs:
++      gpio_free(pdata->pin_miso);
++err_request_miso:
++      gpio_free(pdata->pin_mosi);
++err_request_mosi:
++      gpio_free(pdata->pin_clk);
++err_request_clk:
++      kfree(master);
++
++err_alloc_master:
++      return err;
++}
++
++static int __devexit spi_gpio_remove(struct platform_device *pdev)
++{
++      struct spi_gpio *sp;
++      struct spi_gpio_platform_data *pdata;
++
++      pdata = pdev->dev.platform_data;
++      sp = platform_get_drvdata(pdev);
++
++      gpio_free(pdata->pin_clk);
++      gpio_free(pdata->pin_mosi);
++      gpio_free(pdata->pin_miso);
++      gpio_free(pdata->pin_cs);
++      spi_bitbang_stop(&sp->bitbang);
++      spi_master_put(sp->bitbang.master);
++
++      return 0;
++}
++
++static struct platform_driver spi_gpio_driver = {
++      .driver         = {
++              .name   = SPI_GPIO_PLATDEV_NAME,
++              .owner  = THIS_MODULE,
++      },
++      .probe          = spi_gpio_probe,
++      .remove         = __devexit_p(spi_gpio_remove),
++};
++
++int spi_gpio_next_id(void)
++{
++      static atomic_t counter = ATOMIC_INIT(-1);
++
++      return atomic_inc_return(&counter);
++}
++EXPORT_SYMBOL(spi_gpio_next_id);
++
++static int __init spi_gpio_init(void)
++{
++      int err;
++
++      err = platform_driver_register(&spi_gpio_driver);
++      if (err)
++              printk(KERN_ERR "spi-gpio: register failed: %d\n", err);
++
++      return err;
++}
++module_init(spi_gpio_init);
++
++static void __exit spi_gpio_exit(void)
++{
++      platform_driver_unregister(&spi_gpio_driver);
++}
++module_exit(spi_gpio_exit);
++
++MODULE_AUTHOR("Piot Skamruk <piotr.skamruk at gmail.com>");
++MODULE_AUTHOR("Michael Buesch");
++MODULE_DESCRIPTION("Platform independent GPIO bitbanging SPI driver");
++MODULE_LICENSE("GPL v2");
+--- a/drivers/spi/Kconfig
++++ b/drivers/spi/Kconfig
+@@ -184,6 +184,15 @@ config SPI_IMX_VER_0_7
+ config SPI_IMX_VER_2_3
+       def_bool y if SOC_IMX51 || SOC_IMX53
+ 
++config SPI_GPIO_OLD
++      tristate "Old GPIO API based bitbanging SPI controller (DEPRECATED)"
++      depends on SPI_MASTER && GENERIC_GPIO
++      select SPI_BITBANG
++      help
++        This code is deprecated. Please use the new mainline SPI-GPIO driver.
++
++        If unsure, say N.
++
+ config SPI_IMX
+       tristate "Freescale i.MX SPI controllers"
+       depends on ARCH_MXC
+--- a/drivers/spi/Makefile
++++ b/drivers/spi/Makefile
+@@ -25,6 +25,7 @@ dw_spi_midpci-objs                   := dw_spi_pci.o dw_
+ obj-$(CONFIG_SPI_DW_MMIO)             += dw_spi_mmio.o
+ obj-$(CONFIG_SPI_EP93XX)              += ep93xx_spi.o
+ obj-$(CONFIG_SPI_GPIO)                        += spi_gpio.o
++obj-$(CONFIG_SPI_GPIO_OLD)            += spi_gpio_old.o
+ obj-$(CONFIG_SPI_IMX)                 += spi_imx.o
+ obj-$(CONFIG_SPI_LM70_LLP)            += spi_lm70llp.o
+ obj-$(CONFIG_SPI_PXA2XX)              += pxa2xx_spi.o

diff --git a/target/linux/generic/patches-3.0/863-gpiommc.patch b/target/linux/generic/patches-3.0/863-gpiommc.patch
new file mode 100644 (file)
index 0000000..f91cf1a
--- /dev/null
+++ b/target/linux/generic/patches-3.0/863-gpiommc.patch
@@ -0,0 +1,843 @@
+--- /dev/null
++++ b/drivers/mmc/host/gpiommc.c
+@@ -0,0 +1,608 @@
++/*
++ * Driver an MMC/SD card on a bitbanging GPIO SPI bus.
++ * This module hooks up the mmc_spi and spi_gpio modules and also
++ * provides a configfs interface.
++ *
++ * Copyright 2008 Michael Buesch <mb@bu3sch.de>
++ *
++ * Licensed under the GNU/GPL. See COPYING for details.
++ */
++
++#include <linux/mmc/gpiommc.h>
++#include <linux/platform_device.h>
++#include <linux/list.h>
++#include <linux/mutex.h>
++#include <linux/spi/spi_gpio_old.h>
++#include <linux/configfs.h>
++#include <linux/gpio.h>
++#include <asm/atomic.h>
++
++
++#define PFX                           "gpio-mmc: "
++
++
++struct gpiommc_device {
++      struct platform_device *pdev;
++      struct platform_device *spi_pdev;
++      struct spi_board_info boardinfo;
++};
++
++
++MODULE_DESCRIPTION("GPIO based MMC driver");
++MODULE_AUTHOR("Michael Buesch");
++MODULE_LICENSE("GPL");
++
++
++static int gpiommc_boardinfo_setup(struct spi_board_info *bi,
++                                 struct spi_master *master,
++                                 void *data)
++{
++      struct gpiommc_device *d = data;
++      struct gpiommc_platform_data *pdata = d->pdev->dev.platform_data;
++
++      /* Bind the SPI master to the MMC-SPI host driver. */
++      strlcpy(bi->modalias, "mmc_spi", sizeof(bi->modalias));
++
++      bi->max_speed_hz = pdata->max_bus_speed;
++      bi->bus_num = master->bus_num;
++      bi->mode = pdata->mode;
++
++      return 0;
++}
++
++static int gpiommc_probe(struct platform_device *pdev)
++{
++      struct gpiommc_platform_data *mmc_pdata = pdev->dev.platform_data;
++      struct spi_gpio_platform_data spi_pdata;
++      struct gpiommc_device *d;
++      int err;
++
++      err = -ENXIO;
++      if (!mmc_pdata)
++              goto error;
++
++#ifdef CONFIG_MMC_SPI_MODULE
++      err = request_module("mmc_spi");
++      if (err) {
++              printk(KERN_WARNING PFX
++                     "Failed to request mmc_spi module.\n");
++      }
++#endif /* CONFIG_MMC_SPI_MODULE */
++
++      /* Allocate the GPIO-MMC device */
++      err = -ENOMEM;
++      d = kzalloc(sizeof(*d), GFP_KERNEL);
++      if (!d)
++              goto error;
++      d->pdev = pdev;
++
++      /* Create the SPI-GPIO device */
++      d->spi_pdev = platform_device_alloc(SPI_GPIO_PLATDEV_NAME,
++                                          spi_gpio_next_id());
++      if (!d->spi_pdev)
++              goto err_free_d;
++
++      memset(&spi_pdata, 0, sizeof(spi_pdata));
++      spi_pdata.pin_clk = mmc_pdata->pins.gpio_clk;
++      spi_pdata.pin_miso = mmc_pdata->pins.gpio_do;
++      spi_pdata.pin_mosi = mmc_pdata->pins.gpio_di;
++      spi_pdata.pin_cs = mmc_pdata->pins.gpio_cs;
++      spi_pdata.cs_activelow = mmc_pdata->pins.cs_activelow;
++      spi_pdata.no_spi_delay = mmc_pdata->no_spi_delay;
++      spi_pdata.boardinfo_setup = gpiommc_boardinfo_setup;
++      spi_pdata.boardinfo_setup_data = d;
++
++      err = platform_device_add_data(d->spi_pdev, &spi_pdata,
++                                     sizeof(spi_pdata));
++      if (err)
++              goto err_free_pdev;
++      err = platform_device_add(d->spi_pdev);
++      if (err)
++              goto err_free_pdata;
++      platform_set_drvdata(pdev, d);
++
++      printk(KERN_INFO PFX "MMC-Card \"%s\" "
++             "attached to GPIO pins di=%u, do=%u, clk=%u, cs=%u\n",
++             mmc_pdata->name, mmc_pdata->pins.gpio_di,
++             mmc_pdata->pins.gpio_do,
++             mmc_pdata->pins.gpio_clk,
++             mmc_pdata->pins.gpio_cs);
++
++      return 0;
++
++err_free_pdata:
++      kfree(d->spi_pdev->dev.platform_data);
++      d->spi_pdev->dev.platform_data = NULL;
++err_free_pdev:
++      platform_device_put(d->spi_pdev);
++err_free_d:
++      kfree(d);
++error:
++      return err;
++}
++
++static int gpiommc_remove(struct platform_device *pdev)
++{
++      struct gpiommc_device *d = platform_get_drvdata(pdev);
++      struct gpiommc_platform_data *pdata = d->pdev->dev.platform_data;
++
++      platform_device_unregister(d->spi_pdev);
++      printk(KERN_INFO PFX "GPIO based MMC-Card \"%s\" removed\n",
++             pdata->name);
++      platform_device_put(d->spi_pdev);
++
++      return 0;
++}
++
++#ifdef CONFIG_GPIOMMC_CONFIGFS
++
++/* A device that was created through configfs */
++struct gpiommc_configfs_device {
++      struct config_item item;
++      /* The platform device, after registration. */
++      struct platform_device *pdev;
++      /* The configuration */
++      struct gpiommc_platform_data pdata;
++};
++
++#define GPIO_INVALID  -1
++
++static inline bool gpiommc_is_registered(struct gpiommc_configfs_device *dev)
++{
++      return (dev->pdev != NULL);
++}
++
++static inline struct gpiommc_configfs_device *ci_to_gpiommc(struct config_item *item)
++{
++      return item ? container_of(item, struct gpiommc_configfs_device, item) : NULL;
++}
++
++static struct configfs_attribute gpiommc_attr_DI = {
++      .ca_owner = THIS_MODULE,
++      .ca_name = "gpio_data_in",
++      .ca_mode = S_IRUGO | S_IWUSR,
++};
++
++static struct configfs_attribute gpiommc_attr_DO = {
++      .ca_owner = THIS_MODULE,
++      .ca_name = "gpio_data_out",
++      .ca_mode = S_IRUGO | S_IWUSR,
++};
++
++static struct configfs_attribute gpiommc_attr_CLK = {
++      .ca_owner = THIS_MODULE,
++      .ca_name = "gpio_clock",
++      .ca_mode = S_IRUGO | S_IWUSR,
++};
++
++static struct configfs_attribute gpiommc_attr_CS = {
++      .ca_owner = THIS_MODULE,
++      .ca_name = "gpio_chipselect",
++      .ca_mode = S_IRUGO | S_IWUSR,
++};
++
++static struct configfs_attribute gpiommc_attr_CS_activelow = {
++      .ca_owner = THIS_MODULE,
++      .ca_name = "gpio_chipselect_activelow",
++      .ca_mode = S_IRUGO | S_IWUSR,
++};
++
++static struct configfs_attribute gpiommc_attr_spimode = {
++      .ca_owner = THIS_MODULE,
++      .ca_name = "spi_mode",
++      .ca_mode = S_IRUGO | S_IWUSR,
++};
++
++static struct configfs_attribute gpiommc_attr_spidelay = {
++      .ca_owner = THIS_MODULE,
++      .ca_name = "spi_delay",
++      .ca_mode = S_IRUGO | S_IWUSR,
++};
++
++static struct configfs_attribute gpiommc_attr_max_bus_speed = {
++      .ca_owner = THIS_MODULE,
++      .ca_name = "max_bus_speed",
++      .ca_mode = S_IRUGO | S_IWUSR,
++};
++
++static struct configfs_attribute gpiommc_attr_register = {
++      .ca_owner = THIS_MODULE,
++      .ca_name = "register",
++      .ca_mode = S_IRUGO | S_IWUSR,
++};
++
++static struct configfs_attribute *gpiommc_config_attrs[] = {
++      &gpiommc_attr_DI,
++      &gpiommc_attr_DO,
++      &gpiommc_attr_CLK,
++      &gpiommc_attr_CS,
++      &gpiommc_attr_CS_activelow,
++      &gpiommc_attr_spimode,
++      &gpiommc_attr_spidelay,
++      &gpiommc_attr_max_bus_speed,
++      &gpiommc_attr_register,
++      NULL,
++};
++
++static ssize_t gpiommc_config_attr_show(struct config_item *item,
++                                      struct configfs_attribute *attr,
++                                      char *page)
++{
++      struct gpiommc_configfs_device *dev = ci_to_gpiommc(item);
++      ssize_t count = 0;
++      unsigned int gpio;
++      int err = 0;
++
++      if (attr == &gpiommc_attr_DI) {
++              gpio = dev->pdata.pins.gpio_di;
++              if (gpio == GPIO_INVALID)
++                      count = snprintf(page, PAGE_SIZE, "not configured\n");
++              else
++                      count = snprintf(page, PAGE_SIZE, "%u\n", gpio);
++              goto out;
++      }
++      if (attr == &gpiommc_attr_DO) {
++              gpio = dev->pdata.pins.gpio_do;
++              if (gpio == GPIO_INVALID)
++                      count = snprintf(page, PAGE_SIZE, "not configured\n");
++              else
++                      count = snprintf(page, PAGE_SIZE, "%u\n", gpio);
++              goto out;
++      }
++      if (attr == &gpiommc_attr_CLK) {
++              gpio = dev->pdata.pins.gpio_clk;
++              if (gpio == GPIO_INVALID)
++                      count = snprintf(page, PAGE_SIZE, "not configured\n");
++              else
++                      count = snprintf(page, PAGE_SIZE, "%u\n", gpio);
++              goto out;
++      }
++      if (attr == &gpiommc_attr_CS) {
++              gpio = dev->pdata.pins.gpio_cs;
++              if (gpio == GPIO_INVALID)
++                      count = snprintf(page, PAGE_SIZE, "not configured\n");
++              else
++                      count = snprintf(page, PAGE_SIZE, "%u\n", gpio);
++              goto out;
++      }
++      if (attr == &gpiommc_attr_CS_activelow) {
++              count = snprintf(page, PAGE_SIZE, "%u\n",
++                               dev->pdata.pins.cs_activelow);
++              goto out;
++      }
++      if (attr == &gpiommc_attr_spimode) {
++              count = snprintf(page, PAGE_SIZE, "%u\n",
++                               dev->pdata.mode);
++              goto out;
++      }
++      if (attr == &gpiommc_attr_spidelay) {
++              count = snprintf(page, PAGE_SIZE, "%u\n",
++                               !dev->pdata.no_spi_delay);
++              goto out;
++      }
++      if (attr == &gpiommc_attr_max_bus_speed) {
++              count = snprintf(page, PAGE_SIZE, "%u\n",
++                               dev->pdata.max_bus_speed);
++              goto out;
++      }
++      if (attr == &gpiommc_attr_register) {
++              count = snprintf(page, PAGE_SIZE, "%u\n",
++                               gpiommc_is_registered(dev));
++              goto out;
++      }
++      WARN_ON(1);
++      err = -ENOSYS;
++out:
++      return err ? err : count;
++}
++
++static int gpiommc_do_register(struct gpiommc_configfs_device *dev,
++                             const char *name)
++{
++      int err;
++
++      if (gpiommc_is_registered(dev))
++              return 0;
++
++      if (!gpio_is_valid(dev->pdata.pins.gpio_di) ||
++          !gpio_is_valid(dev->pdata.pins.gpio_do) ||
++          !gpio_is_valid(dev->pdata.pins.gpio_clk) ||
++          !gpio_is_valid(dev->pdata.pins.gpio_cs)) {
++              printk(KERN_ERR PFX
++                     "configfs: Invalid GPIO pin number(s)\n");
++              return -EINVAL;
++      }
++
++      strlcpy(dev->pdata.name, name,
++              sizeof(dev->pdata.name));
++
++      dev->pdev = platform_device_alloc(GPIOMMC_PLATDEV_NAME,
++                                        gpiommc_next_id());
++      if (!dev->pdev)
++              return -ENOMEM;
++      err = platform_device_add_data(dev->pdev, &dev->pdata,
++                                     sizeof(dev->pdata));
++      if (err) {
++              platform_device_put(dev->pdev);
++              return err;
++      }
++      err = platform_device_add(dev->pdev);
++      if (err) {
++              platform_device_put(dev->pdev);
++              return err;
++      }
++
++      return 0;
++}
++
++static void gpiommc_do_unregister(struct gpiommc_configfs_device *dev)
++{
++      if (!gpiommc_is_registered(dev))
++              return;
++
++      platform_device_unregister(dev->pdev);
++      dev->pdev = NULL;
++}
++
++static ssize_t gpiommc_config_attr_store(struct config_item *item,
++                                       struct configfs_attribute *attr,
++                                       const char *page, size_t count)
++{
++      struct gpiommc_configfs_device *dev = ci_to_gpiommc(item);
++      int err = -EINVAL;
++      unsigned long data;
++
++      if (attr == &gpiommc_attr_register) {
++              err = strict_strtoul(page, 10, &data);
++              if (err)
++                      goto out;
++              err = -EINVAL;
++              if (data == 1)
++                      err = gpiommc_do_register(dev, item->ci_name);
++              if (data == 0) {
++                      gpiommc_do_unregister(dev);
++                      err = 0;
++              }
++              goto out;
++      }
++
++      if (gpiommc_is_registered(dev)) {
++              /* The rest of the config parameters can only be set
++               * as long as the device is not registered, yet. */
++              err = -EBUSY;
++              goto out;
++      }
++
++      if (attr == &gpiommc_attr_DI) {
++              err = strict_strtoul(page, 10, &data);
++              if (err)
++                      goto out;
++              err = -EINVAL;
++              if (!gpio_is_valid(data))
++                      goto out;
++              dev->pdata.pins.gpio_di = data;
++              err = 0;
++              goto out;
++      }
++      if (attr == &gpiommc_attr_DO) {
++              err = strict_strtoul(page, 10, &data);
++              if (err)
++                      goto out;
++              err = -EINVAL;
++              if (!gpio_is_valid(data))
++                      goto out;
++              dev->pdata.pins.gpio_do = data;
++              err = 0;
++              goto out;
++      }
++      if (attr == &gpiommc_attr_CLK) {
++              err = strict_strtoul(page, 10, &data);
++              if (err)
++                      goto out;
++              err = -EINVAL;
++              if (!gpio_is_valid(data))
++                      goto out;
++              dev->pdata.pins.gpio_clk = data;
++              err = 0;
++              goto out;
++      }
++      if (attr == &gpiommc_attr_CS) {
++              err = strict_strtoul(page, 10, &data);
++              if (err)
++                      goto out;
++              err = -EINVAL;
++              if (!gpio_is_valid(data))
++                      goto out;
++              dev->pdata.pins.gpio_cs = data;
++              err = 0;
++              goto out;
++      }
++      if (attr == &gpiommc_attr_CS_activelow) {
++              err = strict_strtoul(page, 10, &data);
++              if (err)
++                      goto out;
++              err = -EINVAL;
++              if (data != 0 && data != 1)
++                      goto out;
++              dev->pdata.pins.cs_activelow = data;
++              err = 0;
++              goto out;
++      }
++      if (attr == &gpiommc_attr_spimode) {
++              err = strict_strtoul(page, 10, &data);
++              if (err)
++                      goto out;
++              err = -EINVAL;
++              switch (data) {
++              case 0:
++                      dev->pdata.mode = SPI_MODE_0;
++                      break;
++              case 1:
++                      dev->pdata.mode = SPI_MODE_1;
++                      break;
++              case 2:
++                      dev->pdata.mode = SPI_MODE_2;
++                      break;
++              case 3:
++                      dev->pdata.mode = SPI_MODE_3;
++                      break;
++              default:
++                      goto out;
++              }
++              err = 0;
++              goto out;
++      }
++      if (attr == &gpiommc_attr_spidelay) {
++              err = strict_strtoul(page, 10, &data);
++              if (err)
++                      goto out;
++              err = -EINVAL;
++              if (data != 0 && data != 1)
++                      goto out;
++              dev->pdata.no_spi_delay = !data;
++              err = 0;
++              goto out;
++      }
++      if (attr == &gpiommc_attr_max_bus_speed) {
++              err = strict_strtoul(page, 10, &data);
++              if (err)
++                      goto out;
++              err = -EINVAL;
++              if (data > UINT_MAX)
++                      goto out;
++              dev->pdata.max_bus_speed = data;
++              err = 0;
++              goto out;
++      }
++      WARN_ON(1);
++      err = -ENOSYS;
++out:
++      return err ? err : count;
++}
++
++static void gpiommc_config_item_release(struct config_item *item)
++{
++      struct gpiommc_configfs_device *dev = ci_to_gpiommc(item);
++
++      kfree(dev);
++}
++
++static struct configfs_item_operations gpiommc_config_item_ops = {
++      .release                = gpiommc_config_item_release,
++      .show_attribute         = gpiommc_config_attr_show,
++      .store_attribute        = gpiommc_config_attr_store,
++};
++
++static struct config_item_type gpiommc_dev_ci_type = {
++      .ct_item_ops    = &gpiommc_config_item_ops,
++      .ct_attrs       = gpiommc_config_attrs,
++      .ct_owner       = THIS_MODULE,
++};
++
++static struct config_item *gpiommc_make_item(struct config_group *group,
++                                           const char *name)
++{
++      struct gpiommc_configfs_device *dev;
++
++      if (strlen(name) > GPIOMMC_MAX_NAMELEN) {
++              printk(KERN_ERR PFX "configfs: device name too long\n");
++              return NULL;
++      }
++
++      dev = kzalloc(sizeof(*dev), GFP_KERNEL);
++      if (!dev)
++              return NULL;
++
++      config_item_init_type_name(&dev->item, name,
++                                 &gpiommc_dev_ci_type);
++
++      /* Assign default configuration */
++      dev->pdata.pins.gpio_di = GPIO_INVALID;
++      dev->pdata.pins.gpio_do = GPIO_INVALID;
++      dev->pdata.pins.gpio_clk = GPIO_INVALID;
++      dev->pdata.pins.gpio_cs = GPIO_INVALID;
++      dev->pdata.pins.cs_activelow = 1;
++      dev->pdata.mode = SPI_MODE_0;
++      dev->pdata.no_spi_delay = 0;
++      dev->pdata.max_bus_speed = 5000000; /* 5 MHz */
++
++      return &(dev->item);
++}
++
++static void gpiommc_drop_item(struct config_group *group,
++                            struct config_item *item)
++{
++      struct gpiommc_configfs_device *dev = ci_to_gpiommc(item);
++
++      gpiommc_do_unregister(dev);
++      kfree(dev);
++}
++
++static struct configfs_group_operations gpiommc_ct_group_ops = {
++      .make_item      = gpiommc_make_item,
++      .drop_item      = gpiommc_drop_item,
++};
++
++static struct config_item_type gpiommc_ci_type = {
++      .ct_group_ops   = &gpiommc_ct_group_ops,
++      .ct_owner       = THIS_MODULE,
++};
++
++static struct configfs_subsystem gpiommc_subsys = {
++      .su_group = {
++              .cg_item = {
++                      .ci_namebuf = GPIOMMC_PLATDEV_NAME,
++                      .ci_type = &gpiommc_ci_type,
++              },
++      },
++      .su_mutex = __MUTEX_INITIALIZER(gpiommc_subsys.su_mutex),
++};
++
++#endif /* CONFIG_GPIOMMC_CONFIGFS */
++
++static struct platform_driver gpiommc_plat_driver = {
++      .probe  = gpiommc_probe,
++      .remove = gpiommc_remove,
++      .driver = {
++              .name   = GPIOMMC_PLATDEV_NAME,
++              .owner  = THIS_MODULE,
++      },
++};
++
++int gpiommc_next_id(void)
++{
++      static atomic_t counter = ATOMIC_INIT(-1);
++
++      return atomic_inc_return(&counter);
++}
++EXPORT_SYMBOL(gpiommc_next_id);
++
++static int __init gpiommc_modinit(void)
++{
++      int err;
++
++      err = platform_driver_register(&gpiommc_plat_driver);
++      if (err)
++              return err;
++
++#ifdef CONFIG_GPIOMMC_CONFIGFS
++      config_group_init(&gpiommc_subsys.su_group);
++      err = configfs_register_subsystem(&gpiommc_subsys);
++      if (err) {
++              platform_driver_unregister(&gpiommc_plat_driver);
++              return err;
++      }
++#endif /* CONFIG_GPIOMMC_CONFIGFS */
++
++      return 0;
++}
++module_init(gpiommc_modinit);
++
++static void __exit gpiommc_modexit(void)
++{
++#ifdef CONFIG_GPIOMMC_CONFIGFS
++      configfs_unregister_subsystem(&gpiommc_subsys);
++#endif
++      platform_driver_unregister(&gpiommc_plat_driver);
++}
++module_exit(gpiommc_modexit);
+--- a/drivers/mmc/host/Kconfig
++++ b/drivers/mmc/host/Kconfig
+@@ -458,6 +458,31 @@ config MMC_SDHI
+         This provides support for the SDHI SD/SDIO controller found in
+         SuperH and ARM SH-Mobile SoCs
+ 
++config GPIOMMC
++      tristate "MMC/SD over GPIO-based SPI"
++      depends on MMC && MMC_SPI && SPI_GPIO_OLD
++      help
++        This driver hooks up the mmc_spi and spi_gpio modules so that
++        MMC/SD cards can be used on a GPIO based bus by bitbanging
++        the SPI protocol in software.
++
++        This driver provides a configfs interface to dynamically create
++        and destroy GPIO-based MMC/SD card devices. It also provides
++        a platform device interface API.
++        See Documentation/gpiommc.txt for details.
++
++        The module will be called gpiommc.
++
++        If unsure, say N.
++
++config GPIOMMC_CONFIGFS
++      bool
++      depends on GPIOMMC && CONFIGFS_FS
++      default y
++      help
++        This option automatically enables configfs support for gpiommc
++        if configfs is available.
++
+ config MMC_CB710
+       tristate "ENE CB710 MMC/SD Interface support"
+       depends on PCI
+--- a/drivers/mmc/host/Makefile
++++ b/drivers/mmc/host/Makefile
+@@ -37,6 +37,7 @@ endif
+ obj-$(CONFIG_MMC_SDHI)                += sh_mobile_sdhi.o
+ obj-$(CONFIG_MMC_CB710)               += cb710-mmc.o
+ obj-$(CONFIG_MMC_VIA_SDMMC)   += via-sdmmc.o
++obj-$(CONFIG_GPIOMMC)         += gpiommc.o
+ obj-$(CONFIG_SDH_BFIN)                += bfin_sdh.o
+ obj-$(CONFIG_MMC_DW)          += dw_mmc.o
+ obj-$(CONFIG_MMC_SH_MMCIF)    += sh_mmcif.o
+--- /dev/null
++++ b/include/linux/mmc/gpiommc.h
+@@ -0,0 +1,71 @@
++/*
++ * Device driver for MMC/SD cards driven over a GPIO bus.
++ *
++ * Copyright (c) 2008 Michael Buesch
++ *
++ * Licensed under the GNU/GPL version 2.
++ */
++#ifndef LINUX_GPIOMMC_H_
++#define LINUX_GPIOMMC_H_
++
++#include <linux/types.h>
++
++
++#define GPIOMMC_MAX_NAMELEN           15
++#define GPIOMMC_MAX_NAMELEN_STR               __stringify(GPIOMMC_MAX_NAMELEN)
++
++/**
++ * struct gpiommc_pins - Hardware pin assignments
++ *
++ * @gpio_di: The GPIO number of the DATA IN pin
++ * @gpio_do: The GPIO number of the DATA OUT pin
++ * @gpio_clk: The GPIO number of the CLOCK pin
++ * @gpio_cs: The GPIO number of the CHIPSELECT pin
++ * @cs_activelow: If true, the chip is considered selected if @gpio_cs is low.
++ */
++struct gpiommc_pins {
++      unsigned int gpio_di;
++      unsigned int gpio_do;
++      unsigned int gpio_clk;
++      unsigned int gpio_cs;
++      bool cs_activelow;
++};
++
++/**
++ * struct gpiommc_platform_data - Platform data for a MMC-over-SPI-GPIO device.
++ *
++ * @name: The unique name string of the device.
++ * @pins: The hardware pin assignments.
++ * @mode: The hardware mode. This is either SPI_MODE_0,
++ *        SPI_MODE_1, SPI_MODE_2 or SPI_MODE_3. See the SPI documentation.
++ * @no_spi_delay: Do not use delays in the lowlevel SPI bitbanging code.
++ *                This is not standards compliant, but may be required for some
++ *                embedded machines to gain reasonable speed.
++ * @max_bus_speed: The maximum speed of the SPI bus, in Hertz.
++ */
++struct gpiommc_platform_data {
++      char name[GPIOMMC_MAX_NAMELEN + 1];
++      struct gpiommc_pins pins;
++      u8 mode;
++      bool no_spi_delay;
++      unsigned int max_bus_speed;
++};
++
++/**
++ * GPIOMMC_PLATDEV_NAME - The platform device name string.
++ *
++ * The name string that has to be used for platform_device_alloc
++ * when allocating a gpiommc device.
++ */
++#define GPIOMMC_PLATDEV_NAME  "gpiommc"
++
++/**
++ * gpiommc_next_id - Get another platform device ID number.
++ *
++ * This returns the next platform device ID number that has to be used
++ * for platform_device_alloc. The ID is opaque and should not be used for
++ * anything else.
++ */
++int gpiommc_next_id(void);
++
++#endif /* LINUX_GPIOMMC_H_ */
+--- /dev/null
++++ b/Documentation/gpiommc.txt
+@@ -0,0 +1,97 @@
++GPIOMMC - Driver for an MMC/SD card on a bitbanging GPIO SPI bus
++================================================================
++
++The gpiommc module hooks up the mmc_spi and spi_gpio modules for running an
++MMC or SD card on GPIO pins.
++
++Two interfaces for registering a new MMC/SD card device are provided:
++A static platform-device based mechanism and a dynamic configfs based interface.
++
++
++Registering devices via platform-device
++=======================================
++
++The platform-device interface is used for registering MMC/SD devices that are
++part of the hardware platform. This is most useful only for embedded machines
++with MMC/SD devices statically connected to the platform GPIO bus.
++
++The data structures are declared in <linux/mmc/gpiommc.h>.
++
++To register a new device, define an instance of struct gpiommc_platform_data.
++This structure holds any information about how the device is hooked up to the
++GPIO pins and what hardware modes the device supports. See the docbook-style
++documentation in the header file for more information on the struct fields.
++
++Then allocate a new instance of a platform device by doing:
++
++      pdev = platform_device_alloc(GPIOMMC_PLATDEV_NAME, gpiommc_next_id());
++
++This will allocate the platform device data structures and hook it up to the
++gpiommc driver.
++Then add the gpiommc_platform_data to the platform device.
++
++      err = platform_device_add_data(pdev, pdata, sizeof(struct gpiommc_platform_data));
++
++You may free the local instance of struct gpiommc_platform_data now. (So the
++struct may be allocated on the stack, too).
++Now simply register the platform device.
++
++      err = platform_device_add(pdev);
++
++Done. The gpiommc probe routine will be invoked now and you should see a kernel
++log message for the added device.
++
++
++Registering devices via configfs
++================================
++
++MMC/SD cards connected via GPIO often are a pretty dynamic thing, as for example
++selfmade hacks for soldering an MMC/SD card to standard GPIO pins on embedded
++hardware are a common situation.
++So we provide a dynamic interface to conveniently handle adding and removing
++devices from userspace, without the need to recompile the kernel.
++
++The "gpiommc" subdirectory at the configfs mountpoint is used for handling
++the dynamic configuration.
++
++To create a new device, it must first be allocated with mkdir.
++The following command will allocate a device named "my_mmc":
++      mkdir /config/gpiommc/my_mmc
++
++There are several configuration files available in the new
++/config/gpiommc/my_mmc/ directory:
++
++gpio_data_in                  = The SPI data-IN GPIO pin number.
++gpio_data_out                 = The SPI data-OUT GPIO pin number.
++gpio_clock                    = The SPI Clock GPIO pin number.
++gpio_chipselect                       = The SPI Chipselect GPIO pin number.
++gpio_chipselect_activelow     = Boolean. If 0, Chipselect is active-HIGH.
++                                If 1, Chipselect is active-LOW.
++spi_mode                      = The SPI data mode. Can be 0-3.
++spi_delay                     = Enable all delays in the lowlevel bitbanging.
++max_bus_speed                 = The maximum SPI bus speed. In Hertz.
++
++register                      = Not a configuration parameter.
++                                Used to register the configured card
++                                with the kernel.
++
++The device must first get configured and then registered by writing "1" to
++the "register" file.
++The configuration parameters "gpio_data_in", "gpio_data_out", "gpio_clock"
++and "gpio_chipselect" are essential and _must_ be configured before writing
++"1" to the "register" file. The registration will fail, otherwise.
++
++The default values for the other parameters are:
++gpio_chipselect_activelow     = 1             (CS active-LOW)
++spi_mode                      = 0             (SPI_MODE_0)
++spi_delay                     = 1             (enabled)
++max_bus_speed                 = 5000000       (5 Mhz)
++
++Configuration values can not be changed after registration. To unregister
++the device, write a "0" to the "register" file. The configuration can be
++changed again after unregistering.
++
++To completely remove the device, simply rmdir the directory
++(/config/gpiommc/my_mmc in this example).
++There's no need to first unregister the device before removing it. That will
++be done automatically.
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -2903,6 +2903,11 @@ L:      linuxppc-dev@lists.ozlabs.org
+ S:    Odd Fixes
+ F:    drivers/tty/hvc/
+ 
++GPIOMMC DRIVER
++P:    Michael Buesch
++M:    mb@bu3sch.de
++S:    Maintained
++
+ HARDWARE MONITORING
+ M:    Jean Delvare <khali@linux-fr.org>
+ M:    Guenter Roeck <guenter.roeck@ericsson.com>

diff --git a/target/linux/generic/patches-3.0/864-gpiommc_configfs_locking.patch b/target/linux/generic/patches-3.0/864-gpiommc_configfs_locking.patch
new file mode 100644 (file)
index 0000000..2e4e820
--- /dev/null
+++ b/target/linux/generic/patches-3.0/864-gpiommc_configfs_locking.patch
@@ -0,0 +1,58 @@
+The gpiommc configfs context structure needs locking, as configfs
+does not lock access between files.
+
+--- a/drivers/mmc/host/gpiommc.c
++++ b/drivers/mmc/host/gpiommc.c
+@@ -143,6 +143,8 @@ struct gpiommc_configfs_device {
+       struct platform_device *pdev;
+       /* The configuration */
+       struct gpiommc_platform_data pdata;
++      /* Mutex to protect this structure */
++      struct mutex mutex;
+ };
+ 
+ #define GPIO_INVALID  -1
+@@ -233,6 +235,8 @@ static ssize_t gpiommc_config_attr_show(
+       unsigned int gpio;
+       int err = 0;
+ 
++      mutex_lock(&dev->mutex);
++
+       if (attr == &gpiommc_attr_DI) {
+               gpio = dev->pdata.pins.gpio_di;
+               if (gpio == GPIO_INVALID)
+@@ -293,6 +297,8 @@ static ssize_t gpiommc_config_attr_show(
+       WARN_ON(1);
+       err = -ENOSYS;
+ out:
++      mutex_unlock(&dev->mutex);
++
+       return err ? err : count;
+ }
+ 
+@@ -352,6 +358,8 @@ static ssize_t gpiommc_config_attr_store
+       int err = -EINVAL;
+       unsigned long data;
+ 
++      mutex_lock(&dev->mutex);
++
+       if (attr == &gpiommc_attr_register) {
+               err = strict_strtoul(page, 10, &data);
+               if (err)
+@@ -477,6 +485,8 @@ static ssize_t gpiommc_config_attr_store
+       WARN_ON(1);
+       err = -ENOSYS;
+ out:
++      mutex_unlock(&dev->mutex);
++
+       return err ? err : count;
+ }
+ 
+@@ -513,6 +523,7 @@ static struct config_item *gpiommc_make_
+       if (!dev)
+               return NULL;
+ 
++      mutex_init(&dev->mutex);
+       config_item_init_type_name(&dev->item, name,
+                                  &gpiommc_dev_ci_type);
+ 

diff --git a/target/linux/generic/patches-3.0/870-hifn795x_byteswap.patch b/target/linux/generic/patches-3.0/870-hifn795x_byteswap.patch
new file mode 100644 (file)
index 0000000..3a37c95
--- /dev/null
+++ b/target/linux/generic/patches-3.0/870-hifn795x_byteswap.patch
@@ -0,0 +1,17 @@
+--- a/drivers/crypto/hifn_795x.c
++++ b/drivers/crypto/hifn_795x.c
+@@ -682,12 +682,12 @@ static inline u32 hifn_read_1(struct hif
+ 
+ static inline void hifn_write_0(struct hifn_device *dev, u32 reg, u32 val)
+ {
+-      writel((__force u32)cpu_to_le32(val), dev->bar[0] + reg);
++      writel(val, dev->bar[0] + reg);
+ }
+ 
+ static inline void hifn_write_1(struct hifn_device *dev, u32 reg, u32 val)
+ {
+-      writel((__force u32)cpu_to_le32(val), dev->bar[1] + reg);
++      writel(val, dev->bar[1] + reg);
+ }
+ 
+ static void hifn_wait_puc(struct hifn_device *dev)

diff --git a/target/linux/generic/patches-3.0/900-slab_maxsize.patch b/target/linux/generic/patches-3.0/900-slab_maxsize.patch
new file mode 100644 (file)
index 0000000..1c95694
--- /dev/null
+++ b/target/linux/generic/patches-3.0/900-slab_maxsize.patch
@@ -0,0 +1,13 @@
+--- a/include/linux/slab.h
++++ b/include/linux/slab.h
+@@ -127,8 +127,8 @@ unsigned int kmem_cache_size(struct kmem
+  * to do various tricks to work around compiler limitations in order to
+  * ensure proper constant folding.
+  */
+-#define KMALLOC_SHIFT_HIGH    ((MAX_ORDER + PAGE_SHIFT - 1) <= 25 ? \
+-                              (MAX_ORDER + PAGE_SHIFT - 1) : 25)
++#define KMALLOC_SHIFT_HIGH    ((MAX_ORDER + PAGE_SHIFT - 1) <= 17 ? \
++                              (MAX_ORDER + PAGE_SHIFT - 1) : 17)
+ 
+ #define KMALLOC_MAX_SIZE      (1UL << KMALLOC_SHIFT_HIGH)
+ #define KMALLOC_MAX_ORDER     (KMALLOC_SHIFT_HIGH - PAGE_SHIFT)

diff --git a/target/linux/generic/patches-3.0/910-kobject_uevent.patch b/target/linux/generic/patches-3.0/910-kobject_uevent.patch
new file mode 100644 (file)
index 0000000..f15749f
--- /dev/null
+++ b/target/linux/generic/patches-3.0/910-kobject_uevent.patch
@@ -0,0 +1,32 @@
+--- a/lib/kobject_uevent.c
++++ b/lib/kobject_uevent.c
+@@ -49,6 +49,18 @@ static const char *kobject_actions[] = {
+       [KOBJ_OFFLINE] =        "offline",
+ };
+ 
++u64 uevent_next_seqnum(void)
++{
++      u64 seq;
++
++      spin_lock(&sequence_lock);
++      seq = ++uevent_seqnum;
++      spin_unlock(&sequence_lock);
++
++      return seq;
++}
++EXPORT_SYMBOL_GPL(uevent_next_seqnum);
++
+ /**
+  * kobject_action_type - translate action string to numeric type
+  *
+@@ -244,9 +256,7 @@ int kobject_uevent_env(struct kobject *k
+               kobj->state_remove_uevent_sent = 1;
+ 
+       /* we will send an event, so request a new sequence number */
+-      spin_lock(&sequence_lock);
+-      seq = ++uevent_seqnum;
+-      spin_unlock(&sequence_lock);
++      seq = uevent_next_seqnum();
+       retval = add_uevent_var(env, "SEQNUM=%llu", (unsigned long long)seq);
+       if (retval)
+               goto exit;

diff --git a/target/linux/generic/patches-3.0/911-kobject_add_broadcast_uevent.patch b/target/linux/generic/patches-3.0/911-kobject_add_broadcast_uevent.patch
new file mode 100644 (file)
index 0000000..a428ec5
--- /dev/null
+++ b/target/linux/generic/patches-3.0/911-kobject_add_broadcast_uevent.patch
@@ -0,0 +1,85 @@
+--- a/include/linux/kobject.h
++++ b/include/linux/kobject.h
+@@ -31,6 +31,8 @@
+ #define UEVENT_NUM_ENVP                       32      /* number of env pointers */
+ #define UEVENT_BUFFER_SIZE            2048    /* buffer for the variables */
+ 
++struct sk_buff;
++
+ /* path to the userspace helper executed on an event */
+ extern char uevent_helper[];
+ 
+@@ -217,6 +219,10 @@ int add_uevent_var(struct kobj_uevent_en
+ 
+ int kobject_action_type(const char *buf, size_t count,
+                       enum kobject_action *type);
++
++int broadcast_uevent(struct sk_buff *skb, __u32 pid, __u32 group,
++                   gfp_t allocation);
++
+ #else
+ static inline int kobject_uevent(struct kobject *kobj,
+                                enum kobject_action action)
+@@ -233,6 +239,16 @@ int add_uevent_var(struct kobj_uevent_en
+ static inline int kobject_action_type(const char *buf, size_t count,
+                                     enum kobject_action *type)
+ { return -EINVAL; }
++
++void kfree_skb(struct sk_buff *);
++
++static inline int broadcast_uevent(struct sk_buff *skb, __u32 pid, __u32 group,
++                                 gfp_t allocation)
++{
++      kfree_skb(skb);
++      return 0;
++}
++
+ #endif
+ 
+ #endif /* _KOBJECT_H_ */
+--- a/lib/kobject_uevent.c
++++ b/lib/kobject_uevent.c
+@@ -377,6 +377,43 @@ int add_uevent_var(struct kobj_uevent_en
+ EXPORT_SYMBOL_GPL(add_uevent_var);
+ 
+ #if defined(CONFIG_NET)
++int broadcast_uevent(struct sk_buff *skb, __u32 pid, __u32 group,
++                   gfp_t allocation)
++{
++      struct uevent_sock *ue_sk;
++      int err = 0;
++
++      /* send netlink message */
++      mutex_lock(&uevent_sock_mutex);
++      list_for_each_entry(ue_sk, &uevent_sock_list, list) {
++              struct sock *uevent_sock = ue_sk->sk;
++              struct sk_buff *skb2;
++
++              skb2 = skb_clone(skb, allocation);
++              if (!skb2)
++                      break;
++
++              err = netlink_broadcast(uevent_sock, skb2, pid, group,
++                                      allocation);
++              if (err)
++                      break;
++      }
++      mutex_unlock(&uevent_sock_mutex);
++
++      kfree_skb(skb);
++      return err;
++}
++#else
++int broadcast_uevent(struct sk_buff *skb, __u32 pid, __u32 group,
++                   gfp_t allocation)
++{
++      kfree_skb(skb);
++      return 0;
++}
++#endif
++EXPORT_SYMBOL_GPL(broadcast_uevent);
++
++#if defined(CONFIG_NET)
+ static int uevent_net_init(struct net *net)
+ {
+       struct uevent_sock *ue_sk;

diff --git a/target/linux/generic/patches-3.0/920-unable_to_open_console.patch b/target/linux/generic/patches-3.0/920-unable_to_open_console.patch
new file mode 100644 (file)
index 0000000..aefd8af
--- /dev/null
+++ b/target/linux/generic/patches-3.0/920-unable_to_open_console.patch
@@ -0,0 +1,11 @@
+--- a/init/main.c
++++ b/init/main.c
+@@ -805,7 +805,7 @@ static int __init kernel_init(void * unu
+ 
+       /* Open the /dev/console on the rootfs, this should never fail */
+       if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
+-              printk(KERN_WARNING "Warning: unable to open an initial console.\n");
++              printk(KERN_WARNING "Please be patient, while OpenWrt loads ...\n");
+ 
+       (void) sys_dup(0);
+       (void) sys_dup(0);

diff --git a/target/linux/generic/patches-3.0/921-use_preinit_as_init.patch b/target/linux/generic/patches-3.0/921-use_preinit_as_init.patch
new file mode 100644 (file)
index 0000000..a0a40e7
--- /dev/null
+++ b/target/linux/generic/patches-3.0/921-use_preinit_as_init.patch
@@ -0,0 +1,14 @@
+--- a/init/main.c
++++ b/init/main.c
+@@ -767,10 +767,7 @@ static noinline int init_post(void)
+               printk(KERN_WARNING "Failed to execute %s.  Attempting "
+                                       "defaults...\n", execute_command);
+       }
+-      run_init_process("/sbin/init");
+-      run_init_process("/etc/init");
+-      run_init_process("/bin/init");
+-      run_init_process("/bin/sh");
++      run_init_process("/etc/preinit");
+ 
+       panic("No init found.  Try passing init= option to kernel. "
+             "See Linux Documentation/init.txt for guidance.");

diff --git a/target/linux/generic/patches-3.0/930-crashlog.patch b/target/linux/generic/patches-3.0/930-crashlog.patch
new file mode 100644 (file)
index 0000000..504fd8e
--- /dev/null
+++ b/target/linux/generic/patches-3.0/930-crashlog.patch
@@ -0,0 +1,242 @@
+--- /dev/null
++++ b/include/linux/crashlog.h
+@@ -0,0 +1,12 @@
++#ifndef __CRASHLOG_H
++#define __CRASHLOG_H
++
++#ifdef CONFIG_CRASHLOG
++void __init crashlog_init_mem(struct bootmem_data *bdata);
++#else
++static inline void crashlog_init_mem(struct bootmem_data *bdata)
++{
++}
++#endif
++
++#endif
+--- a/init/Kconfig
++++ b/init/Kconfig
+@@ -871,6 +871,10 @@ config RELAY
+ 
+         If unsure, say N.
+ 
++config CRASHLOG
++      bool "Crash logging"
++      depends on !NO_BOOTMEM && !HAVE_MEMBLOCK
++
+ config BLK_DEV_INITRD
+       bool "Initial RAM filesystem and RAM disk (initramfs/initrd) support"
+       depends on BROKEN || !FRV
+--- a/kernel/Makefile
++++ b/kernel/Makefile
+@@ -107,6 +107,7 @@ obj-$(CONFIG_PERF_EVENTS) += events/
+ obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o
+ obj-$(CONFIG_PADATA) += padata.o
+ obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
++obj-$(CONFIG_CRASHLOG) += crashlog.o
+ 
+ ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y)
+ # According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is
+--- /dev/null
++++ b/kernel/crashlog.c
+@@ -0,0 +1,171 @@
++/*
++ * Crash information logger
++ * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
++ *
++ * Based on ramoops.c
++ *   Copyright (C) 2010 Marco Stornelli <marco.stornelli@gmail.com>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
++ * 02110-1301 USA
++ *
++ */
++
++#include <linux/module.h>
++#include <linux/bootmem.h>
++#include <linux/debugfs.h>
++#include <linux/crashlog.h>
++#include <linux/kmsg_dump.h>
++#include <linux/module.h>
++#include <linux/pfn.h>
++#include <asm/io.h>
++
++#define CRASHLOG_PAGES        4
++#define CRASHLOG_SIZE (CRASHLOG_PAGES * PAGE_SIZE)
++#define CRASHLOG_MAGIC        0xa1eedead
++
++/*
++ * Start the log at 1M before the end of RAM, as some boot loaders like
++ * to use the end of the RAM for stack usage and other things
++ * If this fails, fall back to using the last part.
++ */
++#define CRASHLOG_OFFSET       (1024 * 1024)
++
++struct crashlog_data {
++      u32 magic;
++      u32 len;
++      u8 data[];
++};
++
++static struct debugfs_blob_wrapper crashlog_blob;
++static unsigned long crashlog_addr = 0;
++static struct crashlog_data *crashlog_buf;
++static struct kmsg_dumper dump;
++static bool first = true;
++
++extern struct list_head *crashlog_modules;
++
++void __init crashlog_init_mem(bootmem_data_t *bdata)
++{
++      unsigned long addr;
++
++      if (crashlog_addr)
++              return;
++
++      addr = PFN_PHYS(bdata->node_low_pfn) - CRASHLOG_OFFSET;
++      if (reserve_bootmem(addr, CRASHLOG_SIZE, BOOTMEM_EXCLUSIVE) < 0) {
++              printk("Crashlog failed to allocate RAM at address 0x%lx\n", addr);
++              bdata->node_low_pfn -= CRASHLOG_PAGES;
++              addr = PFN_PHYS(bdata->node_low_pfn);
++      }
++      crashlog_addr = addr;
++}
++
++static void __init crashlog_copy(void)
++{
++      if (crashlog_buf->magic != CRASHLOG_MAGIC)
++              return;
++
++      if (!crashlog_buf->len || crashlog_buf->len >
++          CRASHLOG_SIZE - sizeof(*crashlog_buf))
++              return;
++
++      crashlog_blob.size = crashlog_buf->len;
++      crashlog_blob.data = kmemdup(crashlog_buf->data,
++              crashlog_buf->len, GFP_KERNEL);
++
++      debugfs_create_blob("crashlog", 0700, NULL, &crashlog_blob);
++}
++
++static int get_maxlen(void)
++{
++      return CRASHLOG_SIZE - sizeof(*crashlog_buf) - crashlog_buf->len;
++}
++
++static void crashlog_printf(const char *fmt, ...)
++{
++      va_list args;
++      int len = get_maxlen();
++
++      if (!len)
++              return;
++
++      va_start(args, fmt);
++      crashlog_buf->len += vsnprintf(
++              &crashlog_buf->data[crashlog_buf->len],
++              len, fmt, args);
++      va_end(args);
++}
++
++static void crashlog_do_dump(struct kmsg_dumper *dumper,
++              enum kmsg_dump_reason reason, const char *s1, unsigned long l1,
++              const char *s2, unsigned long l2)
++{
++      unsigned long s1_start, s2_start;
++      unsigned long l1_cpy, l2_cpy;
++      struct timeval tv;
++      struct module *m;
++      char *buf;
++      int len;
++
++      if (!first)
++              crashlog_printf("\n===================================\n");
++
++      do_gettimeofday(&tv);
++      crashlog_printf("Time: %lu.%lu\n",
++              (long)tv.tv_sec, (long)tv.tv_usec);
++
++      if (first) {
++              crashlog_printf("Modules:");
++              list_for_each_entry(m, crashlog_modules, list) {
++                      crashlog_printf("\t%s@%p+%x", m->name,
++                      m->module_core, m->core_size,
++                      m->module_init, m->init_size);
++              }
++              crashlog_printf("\n");
++              first = false;
++      }
++
++      buf = (char *)&crashlog_buf->data[crashlog_buf->len];
++      len = get_maxlen();
++
++      l2_cpy = min(l2, (unsigned long)len);
++      l1_cpy = min(l1, (unsigned long)len - l2_cpy);
++
++      s2_start = l2 - l2_cpy;
++      s1_start = l1 - l1_cpy;
++
++      memcpy(buf, s1 + s1_start, l1_cpy);
++      memcpy(buf + l1_cpy, s2 + s2_start, l2_cpy);
++      crashlog_buf->len += l1_cpy + l2_cpy;
++}
++
++
++int __init crashlog_init_fs(void)
++{
++      if (!crashlog_addr)
++              return -ENOMEM;
++
++      crashlog_buf = ioremap(crashlog_addr, CRASHLOG_SIZE);
++
++      crashlog_copy();
++
++      crashlog_buf->magic = CRASHLOG_MAGIC;
++      crashlog_buf->len = 0;
++
++      dump.dump = crashlog_do_dump;
++      kmsg_dump_register(&dump);
++
++      return 0;
++}
++module_init(crashlog_init_fs);
+--- a/mm/bootmem.c
++++ b/mm/bootmem.c
+@@ -15,6 +15,7 @@
+ #include <linux/module.h>
+ #include <linux/kmemleak.h>
+ #include <linux/range.h>
++#include <linux/crashlog.h>
+ #include <linux/memblock.h>
+ 
+ #include <asm/bug.h>
+@@ -178,6 +179,7 @@ static unsigned long __init free_all_boo
+       if (!bdata->node_bootmem_map)
+               return 0;
+ 
++      crashlog_init_mem(bdata);
+       start = bdata->node_min_pfn;
+       end = bdata->node_low_pfn;
+ 
+--- a/kernel/module.c
++++ b/kernel/module.c
+@@ -107,6 +107,9 @@ static LIST_HEAD(modules);
+ #ifdef CONFIG_KGDB_KDB
+ struct list_head *kdb_modules = &modules; /* kdb needs the list of modules */
+ #endif /* CONFIG_KGDB_KDB */
++#ifdef CONFIG_CRASHLOG
++struct list_head *crashlog_modules = &modules;
++#endif
+ 
+ 
+ /* Block module loading/unloading? */

diff --git a/target/linux/generic/patches-3.0/940-ocf_kbuild_integration.patch b/target/linux/generic/patches-3.0/940-ocf_kbuild_integration.patch
new file mode 100644 (file)
index 0000000..8fa136b
--- /dev/null
+++ b/target/linux/generic/patches-3.0/940-ocf_kbuild_integration.patch
@@ -0,0 +1,20 @@
+--- a/crypto/Kconfig
++++ b/crypto/Kconfig
+@@ -860,3 +860,6 @@ config CRYPTO_USER_API_SKCIPHER
+ source "drivers/crypto/Kconfig"
+ 
+ endif # if CRYPTO
++
++source "crypto/ocf/Kconfig"
++
+--- a/crypto/Makefile
++++ b/crypto/Makefile
+@@ -89,6 +89,8 @@ obj-$(CONFIG_CRYPTO_USER_API) += af_alg.
+ obj-$(CONFIG_CRYPTO_USER_API_HASH) += algif_hash.o
+ obj-$(CONFIG_CRYPTO_USER_API_SKCIPHER) += algif_skcipher.o
+ 
++obj-$(CONFIG_OCF_OCF) += ocf/
++
+ #
+ # generic algorithms and the async_tx api
+ #

diff --git a/target/linux/generic/patches-3.0/941-ocf_20100325.patch b/target/linux/generic/patches-3.0/941-ocf_20100325.patch
new file mode 100644 (file)
index 0000000..e640bc1
--- /dev/null
+++ b/target/linux/generic/patches-3.0/941-ocf_20100325.patch
@@ -0,0 +1,170 @@
+--- a/drivers/char/random.c
++++ b/drivers/char/random.c
+@@ -130,6 +130,9 @@
+  *    void add_interrupt_randomness(int irq);
+  *    void add_disk_randomness(struct gendisk *disk);
+  *
++ *      void random_input_words(__u32 *buf, size_t wordcount, int ent_count)
++ *      int random_input_wait(void);
++ *
+  * add_input_randomness() uses the input layer interrupt timing, as well as
+  * the event type information from the hardware.
+  *
+@@ -147,6 +150,13 @@
+  * seek times do not make for good sources of entropy, as their seek
+  * times are usually fairly consistent.
+  *
++ * random_input_words() just provides a raw block of entropy to the input
++ * pool, such as from a hardware entropy generator.
++ *
++ * random_input_wait() suspends the caller until such time as the
++ * entropy pool falls below the write threshold, and returns a count of how
++ * much entropy (in bits) is needed to sustain the pool.
++ *
+  * All of these routines try to estimate how many bits of randomness a
+  * particular randomness source.  They do this by keeping track of the
+  * first and second order deltas of the event timings.
+@@ -722,6 +732,61 @@ void add_disk_randomness(struct gendisk
+ }
+ #endif
+ 
++/*
++ * random_input_words - add bulk entropy to pool
++ *
++ * @buf: buffer to add
++ * @wordcount: number of __u32 words to add
++ * @ent_count: total amount of entropy (in bits) to credit
++ *
++ * this provides bulk input of entropy to the input pool
++ *
++ */
++void random_input_words(__u32 *buf, size_t wordcount, int ent_count)
++{
++        mix_pool_bytes(&input_pool, buf, wordcount*4);
++
++        credit_entropy_bits(&input_pool, ent_count);
++
++        DEBUG_ENT("crediting %d bits => %d\n",
++                  ent_count, input_pool.entropy_count);
++      /*
++       * Wake up waiting processes if we have enough
++       * entropy.
++       */
++      if (input_pool.entropy_count >= random_read_wakeup_thresh)
++              wake_up_interruptible(&random_read_wait);
++}
++EXPORT_SYMBOL(random_input_words);
++
++/*
++ * random_input_wait - wait until random needs entropy
++ *
++ * this function sleeps until the /dev/random subsystem actually
++ * needs more entropy, and then return the amount of entropy
++ * that it would be nice to have added to the system.
++ */
++int random_input_wait(void)
++{
++      int count;
++
++      wait_event_interruptible(random_write_wait,
++              input_pool.entropy_count < random_write_wakeup_thresh);
++
++      count = random_write_wakeup_thresh - input_pool.entropy_count;
++
++      /* likely we got woken up due to a signal */
++      if (count <= 0) count = random_read_wakeup_thresh;
++
++      DEBUG_ENT("requesting %d bits from input_wait()er %d<%d\n",
++              count,
++              input_pool.entropy_count, random_write_wakeup_thresh);
++
++      return count;
++}
++EXPORT_SYMBOL(random_input_wait);
++
++
+ /*********************************************************************
+  *
+  * Entropy extraction routines
+--- a/fs/fcntl.c
++++ b/fs/fcntl.c
+@@ -142,6 +142,7 @@ SYSCALL_DEFINE1(dup, unsigned int, filde
+       }
+       return ret;
+ }
++EXPORT_SYMBOL(sys_dup);
+ 
+ #define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME)
+ 
+--- a/include/linux/miscdevice.h
++++ b/include/linux/miscdevice.h
+@@ -18,6 +18,7 @@
+ #define APOLLO_MOUSE_MINOR    7
+ #define PC110PAD_MINOR                9
+ /*#define ADB_MOUSE_MINOR     10      FIXME OBSOLETE */
++#define CRYPTODEV_MINOR               70      /* /dev/crypto */
+ #define WATCHDOG_MINOR                130     /* Watchdog timer     */
+ #define TEMP_MINOR            131     /* Temperature Sensor */
+ #define RTC_MINOR             135
+--- a/include/linux/random.h
++++ b/include/linux/random.h
+@@ -9,6 +9,7 @@
+ 
+ #include <linux/types.h>
+ #include <linux/ioctl.h>
++#include <linux/types.h> /* for __u32 in user space */
+ #include <linux/irqnr.h>
+ 
+ /* ioctl()'s for the random number generator */
+@@ -34,6 +35,30 @@
+ /* Clear the entropy pool and associated counters.  (Superuser only.) */
+ #define RNDCLEARPOOL  _IO( 'R', 0x06 )
+ 
++#ifdef CONFIG_FIPS_RNG
++
++/* Size of seed value - equal to AES blocksize */
++#define AES_BLOCK_SIZE_BYTES  16
++#define SEED_SIZE_BYTES                       AES_BLOCK_SIZE_BYTES
++/* Size of AES key */
++#define KEY_SIZE_BYTES                16
++
++/* ioctl() structure used by FIPS 140-2 Tests */
++struct rand_fips_test {
++      unsigned char key[KEY_SIZE_BYTES];                      /* Input */
++      unsigned char datetime[SEED_SIZE_BYTES];        /* Input */
++      unsigned char seed[SEED_SIZE_BYTES];            /* Input */
++      unsigned char result[SEED_SIZE_BYTES];          /* Output */
++};
++
++/* FIPS 140-2 RNG Variable Seed Test. (Superuser only.) */
++#define RNDFIPSVST    _IOWR('R', 0x10, struct rand_fips_test)
++
++/* FIPS 140-2 RNG Monte Carlo Test. (Superuser only.) */
++#define RNDFIPSMCT    _IOWR('R', 0x11, struct rand_fips_test)
++
++#endif /* #ifdef CONFIG_FIPS_RNG */
++
+ struct rand_pool_info {
+       int     entropy_count;
+       int     buf_size;
+@@ -54,6 +79,10 @@ extern void add_input_randomness(unsigne
+                                unsigned int value);
+ extern void add_interrupt_randomness(int irq);
+ 
++extern void random_input_words(__u32 *buf, size_t wordcount, int ent_count);
++extern int random_input_wait(void);
++#define HAS_RANDOM_INPUT_WAIT 1
++
+ extern void get_random_bytes(void *buf, int nbytes);
+ void generate_random_uuid(unsigned char uuid_out[16]);
+ 
+--- a/kernel/pid.c
++++ b/kernel/pid.c
+@@ -427,6 +427,7 @@ struct task_struct *find_task_by_vpid(pi
+ {
+       return find_task_by_pid_ns(vnr, current->nsproxy->pid_ns);
+ }
++EXPORT_SYMBOL(find_task_by_vpid);
+ 
+ struct pid *get_task_pid(struct task_struct *task, enum pid_type type)
+ {

diff --git a/target/linux/generic/patches-3.0/950-vm_exports.patch b/target/linux/generic/patches-3.0/950-vm_exports.patch
new file mode 100644 (file)
index 0000000..129ae8d
--- /dev/null
+++ b/target/linux/generic/patches-3.0/950-vm_exports.patch
@@ -0,0 +1,116 @@
+--- a/mm/shmem.c
++++ b/mm/shmem.c
+@@ -2944,6 +2944,16 @@ out:
+ 
+ /* common code */
+ 
++void shmem_set_file(struct vm_area_struct *vma, struct file *file)
++{
++      if (vma->vm_file)
++              fput(vma->vm_file);
++      vma->vm_file = file;
++      vma->vm_ops = &shmem_vm_ops;
++      vma->vm_flags |= VM_CAN_NONLINEAR;
++}
++EXPORT_SYMBOL_GPL(shmem_set_file);
++
+ /**
+  * shmem_file_setup - get an unlinked file living in tmpfs
+  * @name: name for dentry (to be seen in /proc/<pid>/maps
+@@ -3021,10 +3031,7 @@ int shmem_zero_setup(struct vm_area_stru
+       if (IS_ERR(file))
+               return PTR_ERR(file);
+ 
+-      if (vma->vm_file)
+-              fput(vma->vm_file);
+-      vma->vm_file = file;
+-      vma->vm_ops = &shmem_vm_ops;
+-      vma->vm_flags |= VM_CAN_NONLINEAR;
++      shmem_set_file(vma, file);
++
+       return 0;
+ }
+--- a/fs/file.c
++++ b/fs/file.c
+@@ -268,6 +268,7 @@ int expand_files(struct files_struct *fi
+       /* All good, so we try */
+       return expand_fdtable(files, nr);
+ }
++EXPORT_SYMBOL_GPL(expand_files);
+ 
+ static int count_open_files(struct fdtable *fdt)
+ {
+--- a/kernel/exit.c
++++ b/kernel/exit.c
+@@ -513,6 +513,7 @@ struct files_struct *get_files_struct(st
+ 
+       return files;
+ }
++EXPORT_SYMBOL_GPL(get_files_struct);
+ 
+ void put_files_struct(struct files_struct *files)
+ {
+@@ -534,6 +535,7 @@ void put_files_struct(struct files_struc
+               rcu_read_unlock();
+       }
+ }
++EXPORT_SYMBOL_GPL(put_files_struct);
+ 
+ void reset_files_struct(struct files_struct *files)
+ {
+--- a/kernel/sched.c
++++ b/kernel/sched.c
+@@ -4905,6 +4905,7 @@ int can_nice(const struct task_struct *p
+       return (nice_rlim <= task_rlimit(p, RLIMIT_NICE) ||
+               capable(CAP_SYS_NICE));
+ }
++EXPORT_SYMBOL_GPL(can_nice);
+ 
+ #ifdef __ARCH_WANT_SYS_NICE
+ 
+--- a/mm/memory.c
++++ b/mm/memory.c
+@@ -1393,6 +1393,7 @@ unsigned long zap_page_range(struct vm_a
+       tlb_finish_mmu(&tlb, address, end);
+       return end;
+ }
++EXPORT_SYMBOL_GPL(zap_page_range);
+ 
+ /**
+  * zap_vma_ptes - remove ptes mapping the vma
+@@ -2819,6 +2820,7 @@ int vmtruncate_range(struct inode *inode
+ 
+       return 0;
+ }
++EXPORT_SYMBOL_GPL(vmtruncate_range);
+ 
+ /*
+  * We enter with non-exclusive mmap_sem (to exclude vma changes,
+--- a/mm/vmalloc.c
++++ b/mm/vmalloc.c
+@@ -1245,6 +1245,7 @@ void unmap_kernel_range(unsigned long ad
+       vunmap_page_range(addr, end);
+       flush_tlb_kernel_range(addr, end);
+ }
++EXPORT_SYMBOL_GPL(unmap_kernel_range);
+ 
+ int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages)
+ {
+@@ -1360,6 +1361,7 @@ struct vm_struct *get_vm_area(unsigned l
+       return __get_vm_area_node(size, 1, flags, VMALLOC_START, VMALLOC_END,
+                               -1, GFP_KERNEL, __builtin_return_address(0));
+ }
++EXPORT_SYMBOL_GPL(get_vm_area);
+ 
+ struct vm_struct *get_vm_area_caller(unsigned long size, unsigned long flags,
+                               void *caller)
+--- a/include/linux/mm.h
++++ b/include/linux/mm.h
+@@ -871,6 +871,7 @@ extern bool skip_free_areas_node(unsigne
+ 
+ int shmem_lock(struct file *file, int lock, struct user_struct *user);
+ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags);
++void shmem_set_file(struct vm_area_struct *vma, struct file *file);
+ int shmem_zero_setup(struct vm_area_struct *);
+ 
+ extern int can_do_mlock(void);

diff --git a/target/linux/generic/patches-3.0/960-decompress_unlzo_fix.patch b/target/linux/generic/patches-3.0/960-decompress_unlzo_fix.patch
new file mode 100644 (file)
index 0000000..ee7c118
--- /dev/null
+++ b/target/linux/generic/patches-3.0/960-decompress_unlzo_fix.patch
@@ -0,0 +1,23 @@
+--- /dev/null
++++ b/include/linux/decompress/unlzo_mm.h
+@@ -0,0 +1,10 @@
++#ifndef UNLZO_MM_H
++#define UNLZO_MM_H
++
++#ifdef STATIC
++#define INIT
++#else
++#define INIT __init
++#endif
++
++#endif
+--- a/lib/decompress_unlzo.c
++++ b/lib/decompress_unlzo.c
+@@ -38,6 +38,7 @@
+ 
+ #include <linux/types.h>
+ #include <linux/lzo.h>
++#include <linux/decompress/unlzo_mm.h>
+ #include <linux/decompress/mm.h>
+ 
+ #include <linux/compiler.h>

diff --git a/target/linux/generic/patches-3.0/999-drop_sublevel.patch b/target/linux/generic/patches-3.0/999-drop_sublevel.patch
new file mode 100644 (file)
index 0000000..dd4bfe1
--- /dev/null
+++ b/target/linux/generic/patches-3.0/999-drop_sublevel.patch
@@ -0,0 +1,9 @@
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,5 @@
+ VERSION = 3
+ PATCHLEVEL = 0
+-SUBLEVEL = 0
+ EXTRAVERSION = -rc3
+ NAME = Sneaky Weasel
+