18 	struct nl_list_head *	prev;  member
24 	list->prev = list;  in NL_INIT_LIST_HEAD()
28 				 struct nl_list_head *prev,  in __nl_list_add()  argument
31 	prev->next = obj;  in __nl_list_add()
32 	obj->prev = prev;  in __nl_list_add()
33 	next->prev = obj;  in __nl_list_add()
40 	__nl_list_add(obj, head->prev, head);  in nl_list_add_tail()
51 	obj->next->prev = obj->prev;  in nl_list_del()
52 	obj->prev->next = obj->next;  in nl_list_del()
71 	((pos)->member.prev == (head))
91 	do { (head)->next = (head); (head)->prev = (head); } while (0)