bio_attempt_back_merge  722 block/blk-core.c 			merged = bio_attempt_back_merge(rq, bio, nr_segs);
bio_attempt_back_merge  235 block/blk-mq-sched.c 		if (!bio_attempt_back_merge(rq, bio, nr_segs))
bio_attempt_back_merge  280 block/blk-mq-sched.c 				merged = bio_attempt_back_merge(rq, bio,
bio_attempt_back_merge  181 block/blk.h    bool bio_attempt_back_merge(struct request *req, struct bio *bio,