188 static inline struct iolatency_grp *blkg_to_lat(struct blkcg_gq *blkg)  in blkg_to_lat()  argument
190 	return pd_to_lat(blkg_to_pd(blkg, &blkcg_policy_iolatency));  in blkg_to_lat()
466 	struct blkcg_gq *blkg = bio->bi_blkg;  in blkcg_iolatency_throttle()  local
472 	while (blkg && blkg->parent) {  in blkcg_iolatency_throttle()
473 		struct iolatency_grp *iolat = blkg_to_lat(blkg);  in blkcg_iolatency_throttle()
475 			blkg = blkg->parent;  in blkcg_iolatency_throttle()
482 		blkg = blkg->parent;  in blkcg_iolatency_throttle()
525 	struct blkcg_gq *blkg = lat_to_blkg(iolat);  in iolatency_check_latencies()  local
542 	parent = blkg_to_lat(blkg->parent);  in iolatency_check_latencies()
593 	struct blkcg_gq *blkg;  in blkcg_iolatency_done_bio()  local
601 	blkg = bio->bi_blkg;  in blkcg_iolatency_done_bio()
602 	if (!blkg || !bio_flagged(bio, BIO_QOS_THROTTLED))  in blkcg_iolatency_done_bio()
613 	while (blkg && blkg->parent) {  in blkcg_iolatency_done_bio()
614 		iolat = blkg_to_lat(blkg);  in blkcg_iolatency_done_bio()
616 			blkg = blkg->parent;  in blkcg_iolatency_done_bio()
639 		blkg = blkg->parent;  in blkcg_iolatency_done_bio()
662 	struct blkcg_gq *blkg;  in blkiolatency_timer_fn()  local
667 	blkg_for_each_descendant_pre(blkg, pos_css,  in blkiolatency_timer_fn()
678 		if (!blkg_tryget(blkg))  in blkiolatency_timer_fn()
681 		iolat = blkg_to_lat(blkg);  in blkiolatency_timer_fn()
715 		blkg_put(blkg);  in blkiolatency_timer_fn()
787 static void iolatency_set_min_lat_nsec(struct blkcg_gq *blkg, u64 val)  in iolatency_set_min_lat_nsec()  argument
789 	struct iolatency_grp *iolat = blkg_to_lat(blkg);  in iolatency_set_min_lat_nsec()
803 		blkcg_clear_delay(blkg);  in iolatency_set_min_lat_nsec()
809 static void iolatency_clear_scaling(struct blkcg_gq *blkg)  in iolatency_clear_scaling()  argument
811 	if (blkg->parent) {  in iolatency_clear_scaling()
812 		struct iolatency_grp *iolat = blkg_to_lat(blkg->parent);  in iolatency_clear_scaling()
831 	struct blkcg_gq *blkg;  in iolatency_set_limit()  local
859 	iolat = blkg_to_lat(ctx.blkg);  in iolatency_set_limit()
885 	blkg = ctx.blkg;  in iolatency_set_limit()
888 	iolatency_set_min_lat_nsec(blkg, lat_val);  in iolatency_set_limit()
890 		iolatency_clear_scaling(blkg);  in iolatency_set_limit()
901 	const char *dname = blkg_dev_name(pd->blkg);  in iolatency_prfill_limit()
985 	struct blkcg_gq *blkg = lat_to_blkg(iolat);  in iolatency_pd_init()  local
986 	struct rq_qos *rqos = iolat_rq_qos(blkg->q);  in iolatency_pd_init()
991 	if (blk_queue_nonrot(blkg->q))  in iolatency_pd_init()
1014 	if (blkg->parent && blkg_to_pd(blkg->parent, &blkcg_policy_iolatency)) {  in iolatency_pd_init()
1015 		struct iolatency_grp *parent = blkg_to_lat(blkg->parent);  in iolatency_pd_init()
1028 	struct blkcg_gq *blkg = lat_to_blkg(iolat);  in iolatency_pd_offline()  local
1030 	iolatency_set_min_lat_nsec(blkg, 0);  in iolatency_pd_offline()
1031 	iolatency_clear_scaling(blkg);  in iolatency_pd_offline()