return-FIEMAP_EXTENT_UNKNOWN-if-an-extent-is-delalloc

   1 ext4: return FIEMAP_EXTENT_UNKNOWN for delalloc extents
   2
   3 From: Jie Liu <jeff.liu@oracle.com>
   4
   5 Return the FIEMAP_EXTENT_UNKNOWN flag as well except the
   6 FIEMAP_EXTENT_DELALLOC because the data location of an
   7 delayed allocation extent is unknown.
   8
   9 Signed-off-by: Jie Liu <jeff.liu@oracle.com>
  10 ---
  11  fs/ext4/extents.c |    3 ++-
  12  1 file changed, 2 insertions(+), 1 deletion(-)
  13
  14 diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
  15 index bc0f191..47e17b1 100644
  16 --- a/fs/ext4/extents.c
  17 +++ b/fs/ext4/extents.c
  18 @@ -2125,7 +2125,8 @@ static int ext4_fill_fiemap_extents(struct inode *inode,
  19                 next_del = ext4_find_delayed_extent(inode, &es);
  20                 if (!exists && next_del) {
  21                         exists = 1;
  22 -                       flags |= FIEMAP_EXTENT_DELALLOC;
  23 +                       flags |= (FIEMAP_EXTENT_DELALLOC |
  24 +                                 FIEMAP_EXTENT_UNKNOWN);
  25                 }
  26                 up_read(&EXT4_I(inode)->i_data_sem);
  27
  28 --
  29 1.7.9.5
  30