bio_attempt_discard_merge  728 block/blk-core.c 			merged = bio_attempt_discard_merge(q, rq, bio);
bio_attempt_discard_merge  251 block/blk-mq-sched.c 		return bio_attempt_discard_merge(q, rq, bio);
bio_attempt_discard_merge  289 block/blk-mq-sched.c 			merged = bio_attempt_discard_merge(q, rq, bio);
bio_attempt_discard_merge  183 block/blk.h    bool bio_attempt_discard_merge(struct request_queue *q, struct request *req,