tree ad6219309aee3a44248fb7f7eb9756fc76423d79
parent 269d040ff2f340e1ed517dab8b66b2f133c83a77
author Liu Bo <bo.li.liu@oracle.com> 1383014705 +0800
committer Chris Mason <chris.mason@fusionio.com> 1384225860 -0500

Btrfs: do not run snapshot-aware defragment on error

If something wrong happens in write endio, running snapshot-aware defragment
can end up with undefined results, maybe a crash, so we should avoid it.

In order to share similar code, this also adds a helper to free the struct for
snapshot-aware defrag.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>