tree ffebb5c3de0dcc6e10e90f2c69f276a063edb049
parent 6463fe58ea60cbcc3e799937dd0877466fc7b8d5
author Liu Bo <bo.li.liu@oracle.com> 1366628027 +0000
committer Josef Bacik <jbacik@fusionio.com> 1367870115 -0400

Btrfs: return free space in cow error path

Replace some BUG_ONs with proper handling and take allocated space back to
free space cache for later use.

We don't have to worry about extent maps since they'd be freed in releasepage
path.

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