tree c26f47180bbc14fda78dae0cb3d40287d6dafd18
parent 555936bfcb1af26c6919d6cedb83710bb03d4322
author Tao Ma <tao.ma@oracle.com> 1250565745 +0800
committer Joel Becker <joel.becker@oracle.com> 1253675371 -0700

ocfs2: Add refcount b-tree as a new extent tree.

Add refcount b-tree as a new extent tree so that it can
use the b-tree to store and maniuplate ocfs2_refcount_rec.

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