blk-mq: don't kick the requeue_list in blk_mq_add_to_requeue_list

blk_mq_add_to_requeue_list takes a bool parameter to control how to kick
the requeue list at the end of the function.  Move the call to
blk_mq_kick_requeue_list to the callers that want it instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20230413064057.707578-17-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

Author: Christoph Hellwig

block/blk-flush.c

@@ -188,7 +188,8 @@ static void blk_flush_complete_seq(struct request *rq,
 
 	case REQ_FSEQ_DATA:
 		list_move_tail(&rq->flush.list, &fq->flush_data_in_flight);
-		blk_mq_add_to_requeue_list(rq, true, true);
+		blk_mq_add_to_requeue_list(rq, true);
+		blk_mq_kick_requeue_list(q);
 		break;
 
 	case REQ_FSEQ_DONE:
@@ -345,7 +346,8 @@ static void blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq,
 	smp_wmb();
 	req_ref_set(flush_rq, 1);
 
-	blk_mq_add_to_requeue_list(flush_rq, false, true);
+	blk_mq_add_to_requeue_list(flush_rq, false);
+	blk_mq_kick_requeue_list(q);
 }
 
 static enum rq_end_io_ret mq_flush_data_end_io(struct request *rq,

block/blk-mq.c

@@ -1412,12 +1412,17 @@ static void __blk_mq_requeue_request(struct request *rq)
 
 void blk_mq_requeue_request(struct request *rq, bool kick_requeue_list)
 {
+	struct request_queue *q = rq->q;
+
 	__blk_mq_requeue_request(rq);
 
 	/* this request will be re-inserted to io scheduler queue */
 	blk_mq_sched_requeue_request(rq);
 
-	blk_mq_add_to_requeue_list(rq, true, kick_requeue_list);
+	blk_mq_add_to_requeue_list(rq, true);
+
+	if (kick_requeue_list)
+		blk_mq_kick_requeue_list(q);
 }
 EXPORT_SYMBOL(blk_mq_requeue_request);
 
@@ -1459,8 +1464,7 @@ static void blk_mq_requeue_work(struct work_struct *work)
 	blk_mq_run_hw_queues(q, false);
 }
 
-void blk_mq_add_to_requeue_list(struct request *rq, bool at_head,
-				bool kick_requeue_list)
+void blk_mq_add_to_requeue_list(struct request *rq, bool at_head)
 {
 	struct request_queue *q = rq->q;
 	unsigned long flags;
@@ -1479,9 +1483,6 @@ void blk_mq_add_to_requeue_list(struct request *rq, bool at_head,
 		list_add_tail(&rq->queuelist, &q->requeue_list);
 	}
 	spin_unlock_irqrestore(&q->requeue_lock, flags);
-
-	if (kick_requeue_list)
-		blk_mq_kick_requeue_list(q);
 }
 
 void blk_mq_kick_requeue_list(struct request_queue *q)

block/blk-mq.h

@@ -44,8 +44,7 @@ int blk_mq_update_nr_requests(struct request_queue *q, unsigned int nr);
 void blk_mq_wake_waiters(struct request_queue *q);
 bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *,
 			     unsigned int);
-void blk_mq_add_to_requeue_list(struct request *rq, bool at_head,
-				bool kick_requeue_list);
+void blk_mq_add_to_requeue_list(struct request *rq, bool at_head);
 void blk_mq_flush_busy_ctxs(struct blk_mq_hw_ctx *hctx, struct list_head *list);
 struct request *blk_mq_dequeue_from_ctx(struct blk_mq_hw_ctx *hctx,
 					struct blk_mq_ctx *start);