307 	struct rq_depth *rqd = &rwb->rq_depth;  in latency_exceeded()  local
351 	if (rqd->scale_step)  in latency_exceeded()
360 	struct rq_depth *rqd = &rwb->rq_depth;  in rwb_trace_step()  local
362 	trace_wbt_step(bdi, msg, rqd->scale_step, rwb->cur_win_nsec,  in rwb_trace_step()
363 			rwb->wb_background, rwb->wb_normal, rqd->max_depth);  in rwb_trace_step()
400 	struct rq_depth *rqd = &rwb->rq_depth;  in rwb_arm_timer()  local
402 	if (rqd->scale_step > 0) {  in rwb_arm_timer()
410 					int_sqrt((rqd->scale_step + 1) << 8));  in rwb_arm_timer()
425 	struct rq_depth *rqd = &rwb->rq_depth;  in wb_timer_fn()  local
434 	trace_wbt_timer(rwb->rqos.disk->bdi, status, rqd->scale_step, inflight);  in wb_timer_fn()
464 		if (rqd->scale_step > 0)  in wb_timer_fn()
466 		else if (rqd->scale_step < 0)  in wb_timer_fn()
476 	if (rqd->scale_step || inflight)  in wb_timer_fn()
482 	struct rq_depth *rqd = &rwb->rq_depth;  in wbt_update_limits()  local
484 	rqd->scale_step = 0;  in wbt_update_limits()
485 	rqd->scaled_max = false;  in wbt_update_limits()
487 	rq_depth_calc_max_depth(rqd);  in wbt_update_limits()