ocfs2: Add ioctl for reflink.
authorTao Ma <tao.ma@oracle.com>
Mon, 21 Sep 2009 03:25:14 +0000 (11:25 +0800)
committerJoel Becker <joel.becker@oracle.com>
Wed, 23 Sep 2009 03:09:51 +0000 (20:09 -0700)
The ioctl will take 3 parameters: old_path, new_path and
preserve and call vfs_reflink. It is useful when we backport
reflink features to old kernels.

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

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