Btrfs: cleanup for unused ref cache stuff
authorliubo <liubo2009@cn.fujitsu.com>
Sat, 8 Sep 2012 02:01:26 +0000 (20:01 -0600)
committerChris Mason <chris.mason@fusionio.com>
Mon, 1 Oct 2012 19:19:17 +0000 (15:19 -0400)
As ref cache has been removed from btrfs, there is no user on
its lock and its check.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>

No differences found