22 static inline void dl_list_init(struct dl_list *list)  in dl_list_init()  argument
24 	list->next = list;  in dl_list_init()
25 	list->prev = list;  in dl_list_init()
28 static inline void dl_list_add(struct dl_list *list, struct dl_list *item)  in dl_list_add()  argument
30 	item->next = list->next;  in dl_list_add()
31 	item->prev = list;  in dl_list_add()
32 	list->next->prev = item;  in dl_list_add()
33 	list->next = item;  in dl_list_add()
36 static inline void dl_list_add_tail(struct dl_list *list, struct dl_list *item)  in dl_list_add_tail()  argument
38 	dl_list_add(list->prev, item);  in dl_list_add_tail()
49 static inline int dl_list_empty(const struct dl_list *list)  in dl_list_empty()  argument
51 	return list->next == list;  in dl_list_empty()
54 static inline unsigned int dl_list_len(const struct dl_list *list)  in dl_list_len()  argument
58 	for (item = list->next; item != list; item = item->next)  in dl_list_len()
70 #define dl_list_first(list, type, member) \  argument
71 	(dl_list_empty((list)) ? NULL : \
72 	 dl_list_entry((list)->next, type, member))
74 #define dl_list_last(list, type, member) \  argument
75 	(dl_list_empty((list)) ? NULL : \
76 	 dl_list_entry((list)->prev, type, member))
78 #define dl_list_for_each(item, list, type, member) \  argument
79 	for (item = dl_list_entry((list)->next, type, member); \
80 	     &item->member != (list); \
83 #define dl_list_for_each_safe(item, n, list, type, member) \  argument
84 	for (item = dl_list_entry((list)->next, type, member), \
86 	     &item->member != (list); \
89 #define dl_list_for_each_reverse(item, list, type, member) \  argument
90 	for (item = dl_list_entry((list)->prev, type, member); \
91 	     &item->member != (list); \