ocfs2: Add CoW support for xattr.
In order to make 2 transcation(xattr and cow) independent with each other,
we CoW the whole xattr out in case we are setting them.
Signed-off-by: NTao Ma <tao.ma@oracle.com>
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In order to make 2 transcation(xattr and cow) independent with each other,
we CoW the whole xattr out in case we are setting them.
Signed-off-by: NTao Ma <tao.ma@oracle.com>