Commits
Tao Ma committed e73a819db9c
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>