343 	struct stack_map_bucket *bucket, *new_bucket, *old_bucket;  in BPF_CALL_3()  local
423 	old_bucket = xchg(&smap->buckets[id], new_bucket);  in BPF_CALL_3()
424 	if (old_bucket)  in BPF_CALL_3()
425 		pcpu_freelist_push(&smap->freelist, &old_bucket->fnode);  in BPF_CALL_3()
515 	struct stack_map_bucket *bucket, *old_bucket;  in bpf_stackmap_copy()  local
529 	old_bucket = xchg(&smap->buckets[id], bucket);  in bpf_stackmap_copy()
530 	if (old_bucket)  in bpf_stackmap_copy()
531 		pcpu_freelist_push(&smap->freelist, &old_bucket->fnode);  in bpf_stackmap_copy()
574 	struct stack_map_bucket *old_bucket;  in stack_map_delete_elem()  local
580 	old_bucket = xchg(&smap->buckets[id], NULL);  in stack_map_delete_elem()
581 	if (old_bucket) {  in stack_map_delete_elem()
582 		pcpu_freelist_push(&smap->freelist, &old_bucket->fnode);  in stack_map_delete_elem()