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Btrfs: fix ordered extent check in btrfs_punch_hole 

If the ordered extent's last byte was 1 less than our region's
start byte, we would unnecessarily wait for the completion of
that ordered extent, because it doesn't intersect our target
range.

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Filipe David Borba Manana 2013-11-19 16:19:24 +00:00 committed by Chris Mason
parent 376cc685cb
commit 6126e3caf7
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/file.c
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@ -2164,7 +2164,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
* we need to try again.
*/
if ((!ordered ||
(ordered->file_offset + ordered->len < lockstart ||
(ordered->file_offset + ordered->len <= lockstart ||
ordered->file_offset > lockend)) &&
!test_range_bit(&BTRFS_I(inode)->io_tree, lockstart,
lockend, EXTENT_UPTODATE, 0,