tree dc440dfabc838099c99dae06c9ed0d5361e87ac9
parent 4adaa611020fa6ac65b0ac8db78276af4ec04e63
author Jan Schmidt <list.btrfs@jan-o-sch.net> 1363876223 +0000
committer Josef Bacik <jbacik@fusionio.com> 1364478686 -0400

Btrfs: fix EIO from btrfs send in is_extent_unchanged for punched holes

When you take a snapshot, punch a hole where there has been data, then take
another snapshot and try to send an incremental stream, btrfs send would
give you EIO. That is because is_extent_unchanged had no support for holes
being punched. With this patch, instead of returning EIO we just return
0 (== the extent is not unchanged) and we're good.

Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Cc: Alexander Block <ablock84@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>