1004 static int check_flags(struct bpf_htab *htab, struct htab_elem *l_old,  in check_flags()  argument
1007 	if (l_old && (map_flags & ~BPF_F_LOCK) == BPF_NOEXIST)  in check_flags()
1011 	if (!l_old && (map_flags & ~BPF_F_LOCK) == BPF_EXIST)  in check_flags()
1023 	struct htab_elem *l_new = NULL, *l_old;  in htab_map_update_elem()  local
1048 		l_old = lookup_nulls_elem_raw(head, hash, key, key_size,  in htab_map_update_elem()
1050 		ret = check_flags(htab, l_old, map_flags);  in htab_map_update_elem()
1053 		if (l_old) {  in htab_map_update_elem()
1056 					      l_old->key + round_up(key_size, 8),  in htab_map_update_elem()
1070 	l_old = lookup_elem_raw(head, hash, key, key_size);  in htab_map_update_elem()
1072 	ret = check_flags(htab, l_old, map_flags);  in htab_map_update_elem()
1076 	if (unlikely(l_old && (map_flags & BPF_F_LOCK))) {  in htab_map_update_elem()
1084 				      l_old->key + round_up(key_size, 8),  in htab_map_update_elem()
1091 				l_old);  in htab_map_update_elem()
1102 	if (l_old) {  in htab_map_update_elem()
1103 		hlist_nulls_del_rcu(&l_old->hash_node);  in htab_map_update_elem()
1105 			free_htab_elem(htab, l_old);  in htab_map_update_elem()
1107 			check_and_free_timer(htab, l_old);  in htab_map_update_elem()
1125 	struct htab_elem *l_new, *l_old = NULL;  in htab_lru_map_update_elem()  local
1161 	l_old = lookup_elem_raw(head, hash, key, key_size);  in htab_lru_map_update_elem()
1163 	ret = check_flags(htab, l_old, map_flags);  in htab_lru_map_update_elem()
1171 	if (l_old) {  in htab_lru_map_update_elem()
1173 		hlist_nulls_del_rcu(&l_old->hash_node);  in htab_lru_map_update_elem()
1182 	else if (l_old)  in htab_lru_map_update_elem()
1183 		htab_lru_push_free(htab, l_old);  in htab_lru_map_update_elem()
1193 	struct htab_elem *l_new = NULL, *l_old;  in __htab_percpu_map_update_elem()  local
1218 	l_old = lookup_elem_raw(head, hash, key, key_size);  in __htab_percpu_map_update_elem()
1220 	ret = check_flags(htab, l_old, map_flags);  in __htab_percpu_map_update_elem()
1224 	if (l_old) {  in __htab_percpu_map_update_elem()
1226 		pcpu_copy_value(htab, htab_elem_get_ptr(l_old, key_size),  in __htab_percpu_map_update_elem()
1248 	struct htab_elem *l_new = NULL, *l_old;  in __htab_lru_percpu_map_update_elem()  local
1284 	l_old = lookup_elem_raw(head, hash, key, key_size);  in __htab_lru_percpu_map_update_elem()
1286 	ret = check_flags(htab, l_old, map_flags);  in __htab_lru_percpu_map_update_elem()
1290 	if (l_old) {  in __htab_lru_percpu_map_update_elem()
1291 		bpf_lru_node_set_ref(&l_old->lru_node);  in __htab_lru_percpu_map_update_elem()
1294 		pcpu_copy_value(htab, htab_elem_get_ptr(l_old, key_size),  in __htab_lru_percpu_map_update_elem()