36 	struct llist_node *first;  member
45 	return atomic_swap_ptr((void *)&head->first, NULL);  in llist_del_all()
51 	struct llist_node *first, *next;  in llist_del_first()  local
54 		first = head->first;  in llist_del_first()
55 		if (first == NULL)  in llist_del_first()
57 		next = first->next;  in llist_del_first()
58 	} while (atomic_cas_ptr(&head->first, first, next) != first);  in llist_del_first()
60 	return first;  in llist_del_first()
66 	struct llist_node *first = READ_ONCE(head->first);  in llist_add()  local
69 		new->next = first;  in llist_add()
70 	} while (cmpxchg(&head->first, first, new) != first);  in llist_add()
72 	return (first == NULL);  in llist_add()
78 	head->first = NULL;  in init_llist_head()
84 	return (head->first == NULL);  in llist_empty()