linux-kernel - [PATCH 1/2] block: blk-mq: Remove blk_mq_sched_started

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Date:   Mon, 22 Jul 2019 23:14:38 -0300
From:   Marcos Paulo de Souza <marcos.souza.org@...il.com>
To:     linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        axboe@...nel.dk, hare@...e.com
Cc:     Marcos Paulo de Souza <marcos.souza.org@...il.com>
Subject: [PATCH 1/2] block: blk-mq: Remove blk_mq_sched_started_request function

This function checks if the elevator related to the request has
started_request implemented, but currently, none of the available IO
schedulers implement started_request.

Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@...il.com>
---
 block/blk-mq-sched.h | 9 ---------
 block/blk-mq.c       | 2 --
 2 files changed, 11 deletions(-)

diff --git a/block/blk-mq-sched.h b/block/blk-mq-sched.h
index cf22ab00fefb..126021fc3a11 100644
--- a/block/blk-mq-sched.h
+++ b/block/blk-mq-sched.h
@@ -61,15 +61,6 @@ static inline void blk_mq_sched_completed_request(struct request *rq, u64 now)
 		e->type->ops.completed_request(rq, now);
 }
 
-static inline void blk_mq_sched_started_request(struct request *rq)
-{
-	struct request_queue *q = rq->q;
-	struct elevator_queue *e = q->elevator;
-
-	if (e && e->type->ops.started_request)
-		e->type->ops.started_request(rq);
-}
-
 static inline void blk_mq_sched_requeue_request(struct request *rq)
 {
 	struct request_queue *q = rq->q;
diff --git a/block/blk-mq.c b/block/blk-mq.c
index b038ec680e84..3e8902714253 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -669,8 +669,6 @@ void blk_mq_start_request(struct request *rq)
 {
 	struct request_queue *q = rq->q;
 
-	blk_mq_sched_started_request(rq);
-
 	trace_block_rq_issue(q, rq);
 
 	if (test_bit(QUEUE_FLAG_STATS, &q->queue_flags)) {
-- 
2.22.0