-diff -urN linux-2.6.21.1.old/include/linux/squashfs_fs.h linux-2.6.21.1.dev/include/linux/squashfs_fs.h
---- linux-2.6.21.1.old/include/linux/squashfs_fs.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.21.1.dev/include/linux/squashfs_fs.h 2007-05-26 19:00:37.143348416 +0200
+--- a/include/linux/magic.h
++++ b/include/linux/magic.h
+@@ -36,6 +36,9 @@
+ #define REISER2FS_SUPER_MAGIC_STRING "ReIsEr2Fs"
+ #define REISER2FS_JR_SUPER_MAGIC_STRING "ReIsEr3Fs"
+
++#define SQUASHFS_MAGIC 0x73717368
++#define SQUASHFS_MAGIC_SWAP 0x68737173
++
+ #define SMB_SUPER_MAGIC 0x517B
+ #define USBDEVICE_SUPER_MAGIC 0x9fa2
+
+--- /dev/null
++++ b/include/linux/squashfs_fs.h