ELEVATOR_BACK_MERGE 721 block/blk-core.c case ELEVATOR_BACK_MERGE: ELEVATOR_BACK_MERGE 715 block/blk-merge.c return ELEVATOR_BACK_MERGE; ELEVATOR_BACK_MERGE 764 block/blk-merge.c case ELEVATOR_BACK_MERGE: ELEVATOR_BACK_MERGE 891 block/blk-merge.c return ELEVATOR_BACK_MERGE; ELEVATOR_BACK_MERGE 232 block/blk-mq-sched.c case ELEVATOR_BACK_MERGE: ELEVATOR_BACK_MERGE 239 block/blk-mq-sched.c elv_merged_request(q, rq, ELEVATOR_BACK_MERGE); ELEVATOR_BACK_MERGE 278 block/blk-mq-sched.c case ELEVATOR_BACK_MERGE: ELEVATOR_BACK_MERGE 340 block/elevator.c return ELEVATOR_BACK_MERGE; ELEVATOR_BACK_MERGE 398 block/elevator.c if (type == ELEVATOR_BACK_MERGE)