RQF_IO_STAT       291 block/blk-mq.c 	return (rq->rq_flags & (RQF_IO_STAT | RQF_STATS)) || rq->q->elevator;
RQF_IO_STAT       323 block/blk-mq.c 		rq->rq_flags |= RQF_IO_STAT;
RQF_IO_STAT       256 block/blk.h    	       (rq->rq_flags & RQF_IO_STAT) &&
RQF_IO_STAT       318 drivers/md/dm-rq.c 		clone->rq_flags |= RQF_IO_STAT;