LOCK_TO_OFFSET
list[i].lock = LOCK_TO_OFFSET(lt, lp);
*lock = LOCK_TO_OFFSET(lt, lockp);
*lock = LOCK_TO_OFFSET(lt, lockp);
newl_off = LOCK_TO_OFFSET(lt, newl);
id_array[id].last_lock = LOCK_TO_OFFSET(lt, lp);
} else if (LOCK_TO_OFFSET(lt, lockp) != info->last_lock ||