388 			int (*mutator)(void *context, uint32_t old, uint32_t *new),  in sm_ll_mutate()  argument
392 	uint32_t bit, old, ref_count;  in sm_ll_mutate()  local
413 	old = sm_lookup_bitmap(bm_le, bit);  in sm_ll_mutate()
415 	if (old > 2) {  in sm_ll_mutate()
416 		r = sm_ll_lookup_big_ref_count(ll, b, &old);  in sm_ll_mutate()
423 	r = mutator(context, old, &ref_count);  in sm_ll_mutate()
436 		if (old > 2) {  in sm_ll_mutate()
461 	if (ref_count && !old) {  in sm_ll_mutate()
468 	} else if (old && !ref_count) {  in sm_ll_mutate()
478 static int set_ref_count(void *context, uint32_t old, uint32_t *new)  in set_ref_count()  argument
490 static int inc_ref_count(void *context, uint32_t old, uint32_t *new)  in inc_ref_count()  argument
492 	*new = old + 1;  in inc_ref_count()
501 static int dec_ref_count(void *context, uint32_t old, uint32_t *new)  in dec_ref_count()  argument
503 	if (!old) {  in dec_ref_count()
508 	*new = old - 1;  in dec_ref_count()