Btrfs: add a barrier before a waitqueue_active check
authorChris Mason <chris.mason@fusionio.com>
Wed, 25 Jul 2012 20:03:32 +0000 (16:03 -0400)
committerChris Mason <chris.mason@fusionio.com>
Wed, 25 Jul 2012 20:15:08 +0000 (16:15 -0400)
We were missing wakeups on the delayed ref waitqueue due
to races on waitqueue_active.

Signed-off-by: Chris Mason <chris.mason@fusionio.com>

No differences found