xfs_daddr_to_xfbno
ptr->l = cpu_to_be64(xfs_daddr_to_xfbno(xfs_buf_daddr(bp)));
bno = xfs_daddr_to_xfbno(xfs_buf_daddr(bp));
bno = xfs_daddr_to_xfbno(xfs_buf_daddr(bp));
xfbno_t bno = xfs_daddr_to_xfbno(daddr);