tree 8e6cfce9d9d5ca1d5dcd1d52ca1e291a3928c6fe
parent 8dec98edfe9684ce00b580a09dde3dcd21ee785b
author Tao Ma <tao.ma@oracle.com> 1250565660 +0800
committer Joel Becker <joel.becker@oracle.com> 1253675368 -0700

ocfs2: Add caching info for refcount tree.

refcount tree should use its own caching info so that when
we downconvert the refcount tree lock, we can drop all the
cached buffer head.

Signed-off-by: Tao Ma <tao.ma@oracle.com>