RF_ALLOCATED
if (r->r_flags & RF_ALLOCATED) {
if (s->r_flags & RF_ALLOCATED) {
rv->r_flags |= RF_ALLOCATED | flags;
rv->r_flags = flags | RF_ALLOCATED;
(RF_ALLOCATED | RF_SHAREABLE | RF_TIMESHARE);
if (s != NULL && (s->r_flags & RF_ALLOCATED) == 0
&& t != NULL && (t->r_flags & RF_ALLOCATED) == 0) {
} else if (s != NULL && (s->r_flags & RF_ALLOCATED) == 0) {
} else if (t != NULL && (t->r_flags & RF_ALLOCATED) == 0) {
r->r_flags &= ~RF_ALLOCATED;