Btrfs: return free space to global_rsv as much as possible
authorLiu Bo <bo.li.liu@oracle.com>
Sun, 29 Dec 2013 13:44:50 +0000 (21:44 +0800)
committerChris Mason <clm@fb.com>
Tue, 28 Jan 2014 21:20:14 +0000 (13:20 -0800)
commit17504584f52af944960f1ad16752aa10a0755b3b
tree7428bce96d72e51705d9154b661e86a56236c7ac
parent1708cc5723cb775703b42a0ce8e521019c42dd67
Btrfs: return free space to global_rsv as much as possible

@full is not protected within global_rsv.lock, so we may think global_rsv
is already full but in fact it's not, so we miss the opportunity to return
free space to global_rsv directly when we release other block_rsvs.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
fs/btrfs/extent-tree.c