elv_merged_request 239 block/blk-mq-sched.c elv_merged_request(q, rq, ELEVATOR_BACK_MERGE); elv_merged_request 248 block/blk-mq-sched.c elv_merged_request(q, rq, ELEVATOR_FRONT_MERGE); elv_merged_request 118 include/linux/elevator.h extern void elv_merged_request(struct request_queue *, struct request *,