node = cds_hlist_first_entry_rcu(&head, struct ja_test_node, node.list);
if (node) {
ret = cds_ja_del(test_ja, key, &node->node);
node = cds_hlist_first_entry_rcu(&head, struct ja_test_node, node.list);
if (node) {
ret = cds_ja_del(test_ja, key, &node->node);