559 static inline int bio_list_empty(const struct bio_list *bl)  in bio_list_empty()  argument
561 	return bl->head == NULL;  in bio_list_empty()
564 static inline void bio_list_init(struct bio_list *bl)  in bio_list_init()  argument
566 	bl->head = bl->tail = NULL;  in bio_list_init()
571 #define bio_list_for_each(bio, bl) \  argument
572 	for (bio = (bl)->head; bio; bio = bio->bi_next)
574 static inline unsigned bio_list_size(const struct bio_list *bl)  in bio_list_size()  argument
579 	bio_list_for_each(bio, bl)  in bio_list_size()
585 static inline void bio_list_add(struct bio_list *bl, struct bio *bio)  in bio_list_add()  argument
589 	if (bl->tail)  in bio_list_add()
590 		bl->tail->bi_next = bio;  in bio_list_add()
592 		bl->head = bio;  in bio_list_add()
594 	bl->tail = bio;  in bio_list_add()
597 static inline void bio_list_add_head(struct bio_list *bl, struct bio *bio)  in bio_list_add_head()  argument
599 	bio->bi_next = bl->head;  in bio_list_add_head()
601 	bl->head = bio;  in bio_list_add_head()
603 	if (!bl->tail)  in bio_list_add_head()
604 		bl->tail = bio;  in bio_list_add_head()
607 static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2)  in bio_list_merge()  argument
612 	if (bl->tail)  in bio_list_merge()
613 		bl->tail->bi_next = bl2->head;  in bio_list_merge()
615 		bl->head = bl2->head;  in bio_list_merge()
617 	bl->tail = bl2->tail;  in bio_list_merge()
620 static inline void bio_list_merge_head(struct bio_list *bl,  in bio_list_merge_head()  argument
626 	if (bl->head)  in bio_list_merge_head()
627 		bl2->tail->bi_next = bl->head;  in bio_list_merge_head()
629 		bl->tail = bl2->tail;  in bio_list_merge_head()
631 	bl->head = bl2->head;  in bio_list_merge_head()
634 static inline struct bio *bio_list_peek(struct bio_list *bl)  in bio_list_peek()  argument
636 	return bl->head;  in bio_list_peek()
639 static inline struct bio *bio_list_pop(struct bio_list *bl)  in bio_list_pop()  argument
641 	struct bio *bio = bl->head;  in bio_list_pop()
644 		bl->head = bl->head->bi_next;  in bio_list_pop()
645 		if (!bl->head)  in bio_list_pop()
646 			bl->tail = NULL;  in bio_list_pop()
654 static inline struct bio *bio_list_get(struct bio_list *bl)  in bio_list_get()  argument
656 	struct bio *bio = bl->head;  in bio_list_get()
658 	bl->head = bl->tail = NULL;  in bio_list_get()