src/patches/suse-2.6.27.31/patches.fixes/ext4-mballoc-preallocate.patch

   1 From: Jan Kara <jack@suse.cz>
   2 Subject: Fix assertion failure in mballoc code
   3 References: bnc#480749
   4 Patch-mainline: 2.6.28
   5
   6 Backport of ext4 changes made a mistake and we enabled preallocation also for
   7 non-regular files. This is not expected by the mballoc code and so we
   8 eventually hit an assertion failure. Disable preallocation for non-regular
   9 files as mainline does.
  10
  11 Signed-off-by: Jan Kara <jack@suse.cz>
  12
  13 diff -rupX /home/jack/.kerndiffexclude linux-2.6.27-SLE11_BRANCH/fs/ext4/inode.c linux-2.6.27-SLE11_BRANCH-1-ext4_mballoc_fix/fs/ext4/inode.c
  14 --- linux-2.6.27-SLE11_BRANCH/fs/ext4/inode.c   2009-03-10 16:07:41.000000000 +0100
  15 +++ linux-2.6.27-SLE11_BRANCH-1-ext4_mballoc_fix/fs/ext4/inode.c        2009-03-10 16:09:05.000000000 +0100
  16 @@ -600,7 +600,9 @@ static int ext4_alloc_blocks(handle_t *h
  17         ar.goal = goal;
  18         ar.len = target;
  19         ar.logical = iblock;
  20 -       ar.flags = EXT4_MB_HINT_DATA;
  21 +       if (S_ISREG(inode->i_mode))
  22 +               /* preallocate only for regular files */
  23 +               ar.flags = EXT4_MB_HINT_DATA;
  24
  25         current_block = ext4_mb_new_blocks(handle, &ar, err);
  26