dont-retry-file-block-mapping-on-bigalloc-fs-with-non-extent-file

   1 ext4: don't retry file block mapping on bigalloc fs with non-extent file
   2
   3 From: "Darrick J. Wong" <darrick.wong@oracle.com>
   4
   5 ext4 isn't willing to map clusters to a non-extent file.  Don't signal
   6 this with an out of space error, since the FS will retry the
   7 allocation (which didn't fail) forever.  Instead, return EUCLEAN so
   8 that the operation will fail immediately all the way back to userspace.
   9
  10 (The fix is either to run e2fsck -E bmap2extent, or to chattr +e the file.)
  11
  12 Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
  13 Signed-off-by: Theodore Ts'o <tytso@mit.edu>
  14 ---
  15  fs/ext4/indirect.c |    2 +-
  16  1 file changed, 1 insertion(+), 1 deletion(-)
  17
  18 diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
  19 index 45fe924..b46f2b2 100644
  20 --- a/fs/ext4/indirect.c
  21 +++ b/fs/ext4/indirect.c
  22 @@ -565,7 +565,7 @@ int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
  23                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
  24                 EXT4_ERROR_INODE(inode, "Can't allocate blocks for "
  25                                  "non-extent mapped inodes with bigalloc");
  26 -               return -ENOSPC;
  27 +               return -EUCLEAN;
  28         }
  29
  30         /* Set up for the direct block allocation */
  31