Btrfs: protect devices list with its mutex
authorLiu Bo <bo.li.liu@oracle.com>
Wed, 14 Nov 2012 14:35:30 +0000 (14:35 +0000)
committerJosef Bacik <jbacik@fusionio.com>
Wed, 12 Dec 2012 22:15:28 +0000 (17:15 -0500)
Since we've kill the bigger one volume_mutex, we need to add devices
list mutex back.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
fs/btrfs/volumes.c

Simple merge