39 	struct list_head *next, *prev;  member
48 	(head)->prev = head;  in INIT_LIST_HEAD()
58         (head)->next->prev = new;  in list_add()
60         (new)->prev = head;  in list_add()
66 	(entry)->prev = (head)->prev;  in list_add_tail()
68 	(head)->prev->next = entry;  in list_add_tail()
69 	(head)->prev = entry;  in list_add_tail()
74 	(entry)->next->prev = (entry)->prev;  in list_del()
75 	(entry)->prev->next = (entry)->next;  in list_del()
80 	(entry)->next->prev = (entry)->prev;  in list_del_init()
81 	(entry)->prev->next = (entry)->next;  in list_del_init()
89         for (entry = (head)->prev; entry != (head); \
90                 entry = entry->prev)