RSM_NOLOCK
res = rsmresource_lookup(rnum, RSM_NOLOCK);
res = rsmresource_lookup(rnum, RSM_NOLOCK);
res = (rsmresource_t *)rsmresource_lookup(rnum, RSM_NOLOCK);
seg = (rsmseg_t *)rsmresource_lookup(rnum, RSM_NOLOCK);