xfs_lock_inumorder
xfs_ilock(ip2, xfs_lock_inumorder(XFS_MMAPLOCK_EXCL, 1));
xfs_ilock(ips[i], xfs_lock_inumorder(lock_mode, i));
if (xfs_ilock_nowait(ips[i], xfs_lock_inumorder(lock_mode, i)))
xfs_ilock(ip0, xfs_lock_inumorder(ip0_mode, 0));
if (!xfs_ilock_nowait(ip1, xfs_lock_inumorder(ip1_mode, 1))) {
xfs_ilock(ip1, xfs_lock_inumorder(ip1_mode, 1));