package/fuse24/patches/113-DCACHE_BUG.patch

   1 diff -ruN fuse-2.5.3.orig/kernel/dev.c fuse-2.5.3/kernel/dev.c
   2 --- fuse-2.5.3.orig/kernel/dev.c        2006-02-02 19:04:52.000000000 +0200
   3 +++ fuse-2.5.3/kernel/dev.c     2008-10-23 10:27:53.000000000 +0300
   4 @@ -512,6 +512,9 @@
   5  {
   6         unsigned long offset;
   7         int err;
   8 +#ifdef DCACHE_BUG
   9 +       struct vm_area_struct *vma;
  10 +#endif
  11
  12         unlock_request(cs->req);
  13         fuse_copy_finish(cs);
  14 @@ -523,14 +526,22 @@
  15                 cs->nr_segs --;
  16         }
  17         down_read(&current->mm->mmap_sem);
  18 +#ifndef DCACHE_BUG
  19         err = get_user_pages(current, current->mm, cs->addr, 1, cs->write, 0,
  20                              &cs->pg, NULL);
  21 +#else
  22 +       err = get_user_pages(current, current->mm, cs->addr, 1, cs->write, 0,
  23 +                            &cs->pg, &vma);
  24 +#endif
  25         up_read(&current->mm->mmap_sem);
  26         if (err < 0)
  27                 return err;
  28         BUG_ON(err != 1);
  29         offset = cs->addr % PAGE_SIZE;
  30         cs->mapaddr = kmap_atomic(cs->pg, KM_USER0);
  31 +#ifdef DCACHE_BUG
  32 +       r4k_flush_cache_page(vma, cs->addr);
  33 +#endif
  34         cs->buf = cs->mapaddr + offset;
  35         cs->len = min(PAGE_SIZE - offset, cs->seglen);
  36         cs->seglen -= cs->len;
  37 @@ -545,6 +556,11 @@
  38  {
  39         unsigned ncpy = min(*size, cs->len);
  40         if (val) {
  41 +#ifdef DCACHE_BUG
  42 +               // patch from mailing list, it is very important, otherwise,
  43 +               // can't mount, or ls mount point will hang
  44 +               flush_cache_all();
  45 +#endif
  46                 if (cs->write)
  47                         memcpy(cs->buf, *val, ncpy);
  48                 else
  49 diff -ruN fuse-2.5.3.orig/kernel/fuse_i.h fuse-2.5.3/kernel/fuse_i.h
  50 --- fuse-2.5.3.orig/kernel/fuse_i.h     2006-02-02 19:04:52.000000000 +0200
  51 +++ fuse-2.5.3/kernel/fuse_i.h  2008-10-22 18:03:50.000000000 +0300
  52 @@ -45,6 +45,10 @@
  53  #  endif
  54  #endif
  55
  56 +//#if defined(__arm__) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
  57 +#define DCACHE_BUG
  58 +//#endif
  59 +
  60  #include "config.h"
  61  #ifndef KERNEL_2_6
  62  #  include <linux/config.h>
  63