651 				 struct blk_mq_ctx *ctx, struct bio *bio)  in blk_mq_attempt_merge()  argument
662 		if (!blk_rq_merge_ok(rq, bio))  in blk_mq_attempt_merge()
665 		el_ret = blk_try_merge(rq, bio);  in blk_mq_attempt_merge()
667 			if (bio_attempt_back_merge(q, rq, bio)) {  in blk_mq_attempt_merge()
673 			if (bio_attempt_front_merge(q, rq, bio)) {  in blk_mq_attempt_merge()
1115 static void blk_mq_bio_to_request(struct request *rq, struct bio *bio)  in blk_mq_bio_to_request()  argument
1117 	init_request_from_bio(rq, bio);  in blk_mq_bio_to_request()
1131 					 struct request *rq, struct bio *bio)  in blk_mq_merge_queue_io()  argument
1133 	if (!hctx_allow_merges(hctx) || !bio_mergeable(bio)) {  in blk_mq_merge_queue_io()
1134 		blk_mq_bio_to_request(rq, bio);  in blk_mq_merge_queue_io()
1144 		if (!blk_mq_attempt_merge(q, ctx, bio)) {  in blk_mq_merge_queue_io()
1145 			blk_mq_bio_to_request(rq, bio);  in blk_mq_merge_queue_io()
1161 					  struct bio *bio,  in blk_mq_map_request()  argument
1167 	int rw = bio_data_dir(bio);  in blk_mq_map_request()
1174 	if (rw_is_sync(bio->bi_rw))  in blk_mq_map_request()
1177 	trace_block_getrq(q, bio, rw);  in blk_mq_map_request()
1184 		trace_block_sleeprq(q, bio, rw);  in blk_mq_map_request()
1242 static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)  in blk_mq_make_request()  argument
1244 	const int is_sync = rw_is_sync(bio->bi_rw);  in blk_mq_make_request()
1245 	const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA);  in blk_mq_make_request()
1253 	blk_queue_bounce(q, &bio);  in blk_mq_make_request()
1255 	if (bio_integrity_enabled(bio) && bio_integrity_prep(bio)) {  in blk_mq_make_request()
1256 		bio_io_error(bio);  in blk_mq_make_request()
1260 	blk_queue_split(q, &bio, q->bio_split);  in blk_mq_make_request()
1263 		if (blk_attempt_plug_merge(q, bio, &request_count,  in blk_mq_make_request()
1269 	rq = blk_mq_map_request(q, bio, &data);  in blk_mq_make_request()
1276 		blk_mq_bio_to_request(rq, bio);  in blk_mq_make_request()
1291 		blk_mq_bio_to_request(rq, bio);  in blk_mq_make_request()
1320 	if (!blk_mq_merge_queue_io(data.hctx, data.ctx, rq, bio)) {  in blk_mq_make_request()
1339 static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio)  in blk_sq_make_request()  argument
1341 	const int is_sync = rw_is_sync(bio->bi_rw);  in blk_sq_make_request()
1342 	const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA);  in blk_sq_make_request()
1349 	blk_queue_bounce(q, &bio);  in blk_sq_make_request()
1351 	if (bio_integrity_enabled(bio) && bio_integrity_prep(bio)) {  in blk_sq_make_request()
1352 		bio_io_error(bio);  in blk_sq_make_request()
1356 	blk_queue_split(q, &bio, q->bio_split);  in blk_sq_make_request()
1359 	    blk_attempt_plug_merge(q, bio, &request_count, NULL))  in blk_sq_make_request()
1362 	rq = blk_mq_map_request(q, bio, &data);  in blk_sq_make_request()
1369 		blk_mq_bio_to_request(rq, bio);  in blk_sq_make_request()
1381 		blk_mq_bio_to_request(rq, bio);  in blk_sq_make_request()
1396 	if (!blk_mq_merge_queue_io(data.hctx, data.ctx, rq, bio)) {  in blk_sq_make_request()