/* Insert a new entry before the specified head. This is useful for implementing queues.  */
static void list_add_tail(struct list_head *new, struct list_head *head)
/* Insert a new entry before the specified head. This is useful for implementing queues.  */
static void list_add_tail(struct list_head *new, struct list_head *head)
{
	__list_add(new, head->prev, head);
}