RQF_HASHED        195 block/blk.h    #define ELV_ON_HASH(rq) ((rq)->rq_flags & RQF_HASHED)
RQF_HASHED        204 block/elevator.c 	rq->rq_flags &= ~RQF_HASHED;
RQF_HASHED        220 block/elevator.c 	rq->rq_flags |= RQF_HASHED;