ocfs2: Add caching info for refcount tree.
authorTao Ma <tao.ma@oracle.com>
Tue, 18 Aug 2009 03:21:00 +0000 (11:21 +0800)
committerJoel Becker <joel.becker@oracle.com>
Wed, 23 Sep 2009 03:09:28 +0000 (20:09 -0700)
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>

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