2 struct list {  struct
3 	struct list *next, *prev;  argument
7 list_init(struct list *list)  in list_init()  argument
9 	list->next = list;  in list_init()
10 	list->prev = list;  in list_init()
14 list_empty(struct list *list)  in list_empty()  argument
16 	return list->next == list;  in list_empty()
20 list_insert(struct list *link, struct list *new_link)  in list_insert()
29 list_append(struct list *list, struct list *new_link)  in list_append()  argument
31 	list_insert((struct list *)list, new_link);  in list_append()
35 list_prepend(struct list *list, struct list *new_link)  in list_prepend()  argument
37 	list_insert(list->next, new_link);  in list_prepend()
41 list_remove(struct list *link)  in list_remove()
50 #define list_head(list, type, member)		\  argument
51 	list_entry((list)->next, type, member)
53 #define list_tail(list, type, member)		\  argument
54 	list_entry((list)->prev, type, member)
59 #define list_for_each_entry(pos, list, member)			\  argument
60 	for (pos = list_head(list, typeof(*pos), member);	\
61 	     &pos->member != (list);				\