linux-kernel - [PATCH RFC 1/5] blk-mq: Remove some unused function arguments

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Message-ID: <1573652209-163505-2-git-send-email-john.garry@huawei.com>
Date:   Wed, 13 Nov 2019 21:36:45 +0800
From:   John Garry <john.garry@...wei.com>
To:     <axboe@...nel.dk>, <jejb@...ux.ibm.com>,
        <martin.petersen@...cle.com>
CC:     <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-scsi@...r.kernel.org>, <ming.lei@...hat.com>,
        <hare@...e.com>, <bvanassche@....org>, <chenxiang66@...ilicon.com>,
        John Garry <john.garry@...wei.com>
Subject: [PATCH RFC 1/5] blk-mq: Remove some unused function arguments

The struct blk_mq_hw_ctx * argument in blk_mq_put_tag(),
blk_mq_poll_nsecs(), and blk_mq_poll_hybrid_sleep() is unused, so remove
it.

Signed-off-by: John Garry <john.garry@...wei.com>
---
 block/blk-mq-tag.c |  4 ++--
 block/blk-mq-tag.h |  3 +--
 block/blk-mq.c     | 10 ++++------
 block/blk-mq.h     |  2 +-
 4 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index 008388e82b5c..53b4a9414fbd 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -191,8 +191,8 @@ unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data)
 	return tag + tag_offset;
 }
 
-void blk_mq_put_tag(struct blk_mq_hw_ctx *hctx, struct blk_mq_tags *tags,
-		    struct blk_mq_ctx *ctx, unsigned int tag)
+void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx,
+		    unsigned int tag)
 {
 	if (!blk_mq_tag_is_reserved(tags, tag)) {
 		const int real_tag = tag - tags->nr_reserved_tags;
diff --git a/block/blk-mq-tag.h b/block/blk-mq-tag.h
index 61deab0b5a5a..b16f138e75f8 100644
--- a/block/blk-mq-tag.h
+++ b/block/blk-mq-tag.h
@@ -26,8 +26,7 @@ extern struct blk_mq_tags *blk_mq_init_tags(unsigned int nr_tags, unsigned int r
 extern void blk_mq_free_tags(struct blk_mq_tags *tags);
 
 extern unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data);
-extern void blk_mq_put_tag(struct blk_mq_hw_ctx *hctx, struct blk_mq_tags *tags,
-			   struct blk_mq_ctx *ctx, unsigned int tag);
+extern void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx, unsigned int tag);
 extern bool blk_mq_has_free_tags(struct blk_mq_tags *tags);
 extern int blk_mq_tag_update_depth(struct blk_mq_hw_ctx *hctx,
 					struct blk_mq_tags **tags,
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 6e3b15f70cd7..16aa20d23b67 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -499,9 +499,9 @@ static void __blk_mq_free_request(struct request *rq)
 	blk_pm_mark_last_busy(rq);
 	rq->mq_hctx = NULL;
 	if (rq->tag != -1)
-		blk_mq_put_tag(hctx, hctx->tags, ctx, rq->tag);
+		blk_mq_put_tag(hctx->tags, ctx, rq->tag);
 	if (sched_tag != -1)
-		blk_mq_put_tag(hctx, hctx->sched_tags, ctx, sched_tag);
+		blk_mq_put_tag(hctx->sched_tags, ctx, sched_tag);
 	blk_mq_sched_restart(hctx);
 	blk_queue_exit(q);
 }
@@ -3354,7 +3354,6 @@ static void blk_mq_poll_stats_fn(struct blk_stat_callback *cb)
 }
 
 static unsigned long blk_mq_poll_nsecs(struct request_queue *q,
-				       struct blk_mq_hw_ctx *hctx,
 				       struct request *rq)
 {
 	unsigned long ret = 0;
@@ -3387,7 +3386,6 @@ static unsigned long blk_mq_poll_nsecs(struct request_queue *q,
 }
 
 static bool blk_mq_poll_hybrid_sleep(struct request_queue *q,
-				     struct blk_mq_hw_ctx *hctx,
 				     struct request *rq)
 {
 	struct hrtimer_sleeper hs;
@@ -3407,7 +3405,7 @@ static bool blk_mq_poll_hybrid_sleep(struct request_queue *q,
 	if (q->poll_nsec > 0)
 		nsecs = q->poll_nsec;
 	else
-		nsecs = blk_mq_poll_nsecs(q, hctx, rq);
+		nsecs = blk_mq_poll_nsecs(q, rq);
 
 	if (!nsecs)
 		return false;
@@ -3462,7 +3460,7 @@ static bool blk_mq_poll_hybrid(struct request_queue *q,
 			return false;
 	}
 
-	return blk_mq_poll_hybrid_sleep(q, hctx, rq);
+	return blk_mq_poll_hybrid_sleep(q, rq);
 }
 
 /**
diff --git a/block/blk-mq.h b/block/blk-mq.h
index 32c62c64e6c2..78d38b5f2793 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -208,7 +208,7 @@ static inline bool blk_mq_get_dispatch_budget(struct blk_mq_hw_ctx *hctx)
 static inline void __blk_mq_put_driver_tag(struct blk_mq_hw_ctx *hctx,
 					   struct request *rq)
 {
-	blk_mq_put_tag(hctx, hctx->tags, rq->mq_ctx, rq->tag);
+	blk_mq_put_tag(hctx->tags, rq->mq_ctx, rq->tag);
 	rq->tag = -1;
 
 	if (rq->rq_flags & RQF_MQ_INFLIGHT) {
-- 
2.17.1