29     MppListNode     *prev;  member
75     struct list_head *next, *prev;  member
84         (ptr)->next = (ptr); (ptr)->prev = (ptr); \
98         list_entry((ptr)->prev, type, member)
110         list_entry((pos)->member.prev, type, member)
135                                 struct list_head * prev,  in __list_add()  argument
138     next->prev = _new;  in __list_add()
140     _new->prev = prev;  in __list_add()
141     prev->next = _new;  in __list_add()
151     __list_add(_new, head->prev, head);  in list_add_tail()
154 static __inline void __list_del(struct list_head * prev, struct list_head * next)  in __list_del()  argument
156     next->prev = prev;  in __list_del()
157     prev->next = next;  in __list_del()
162     __list_del(entry->prev, entry->next);  in list_del_init()
169     __list_del(list->prev, list->next);  in list_move()
175     __list_del(list->prev, list->next);  in list_move_tail()