598 	struct bio *tail;  member
608 	bl->head = bl->tail = NULL;  in bio_list_init()
631 	if (bl->tail)  in bio_list_add()
632 		bl->tail->bi_next = bio;  in bio_list_add()
636 	bl->tail = bio;  in bio_list_add()
645 	if (!bl->tail)  in bio_list_add_head()
646 		bl->tail = bio;  in bio_list_add_head()
654 	if (bl->tail)  in bio_list_merge()
655 		bl->tail->bi_next = bl2->head;  in bio_list_merge()
659 	bl->tail = bl2->tail;  in bio_list_merge()
669 		bl2->tail->bi_next = bl->head;  in bio_list_merge_head()
671 		bl->tail = bl2->tail;  in bio_list_merge_head()
688 			bl->tail = NULL;  in bio_list_pop()
700 	bl->head = bl->tail = NULL;  in bio_list_get()