1901 void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule)  in blk_mq_flush_plug_list()  argument
1905 	if (list_empty(&plug->mq_list))  in blk_mq_flush_plug_list()
1907 	list_splice_init(&plug->mq_list, &list);  in blk_mq_flush_plug_list()
1909 	if (plug->rq_count > 2 && plug->multiple_queues)  in blk_mq_flush_plug_list()
1912 	plug->rq_count = 0;  in blk_mq_flush_plug_list()
2117 static void blk_add_rq_to_plug(struct blk_plug *plug, struct request *rq)  in blk_add_rq_to_plug()  argument
2119 	list_add_tail(&rq->queuelist, &plug->mq_list);  in blk_add_rq_to_plug()
2120 	plug->rq_count++;  in blk_add_rq_to_plug()
2121 	if (!plug->multiple_queues && !list_is_singular(&plug->mq_list)) {  in blk_add_rq_to_plug()
2124 		tmp = list_first_entry(&plug->mq_list, struct request,  in blk_add_rq_to_plug()
2127 			plug->multiple_queues = true;  in blk_add_rq_to_plug()
2155 	struct blk_plug *plug;  in blk_mq_submit_bio()  local
2201 	plug = blk_mq_plug(q, bio);  in blk_mq_submit_bio()
2206 	} else if (plug && (q->nr_hw_queues == 1 || q->mq_ops->commit_rqs ||  in blk_mq_submit_bio()
2215 		unsigned int request_count = plug->rq_count;  in blk_mq_submit_bio()
2221 			last = list_entry_rq(plug->mq_list.prev);  in blk_mq_submit_bio()
2225 			blk_flush_plug_list(plug, false);  in blk_mq_submit_bio()
2229 		blk_add_rq_to_plug(plug, rq);  in blk_mq_submit_bio()
2233 	} else if (plug && !blk_queue_nomerges(q)) {  in blk_mq_submit_bio()
2241 		if (list_empty(&plug->mq_list))  in blk_mq_submit_bio()
2245 			plug->rq_count--;  in blk_mq_submit_bio()
2247 		blk_add_rq_to_plug(plug, rq);  in blk_mq_submit_bio()
3856 	if (current->plug)  in blk_poll()
3857 		blk_flush_plug_list(current->plug, false);  in blk_poll()