tree 40968bc5b37d3b55e382267683c9612d4697f036
parent e2e9f6082b5ff099978774d5c0148e062344c2f9
author Tao Ma <tao.ma@oracle.com> 1249972394 +0800
committer Joel Becker <joel.becker@oracle.com> 1253675373 -0700

ocfs2: Add support for incrementing refcount in the tree.

    Given a physical cpos and length, increment the refcount
in the tree. If the extent has not been seen before, a refcount
record is created for it. Refcount records may be merged or
split by this operation.

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