RQ_QOS_WBT         73 block/blk-rq-qos.h 	return rq_qos_id(q, RQ_QOS_WBT);
RQ_QOS_WBT         84 block/blk-rq-qos.h 	case RQ_QOS_WBT:
RQ_QOS_WBT        838 block/blk-wbt.c 	rwb->rqos.id = RQ_QOS_WBT;