linux-kernel - [PATCH v2 6/6] blk-mq: Drop local variable for reserved tag

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Date:   Tue, 21 Jun 2022 19:15:43 +0800
From:   John Garry <john.garry@...wei.com>
To:     <axboe@...nel.dk>, <damien.lemoal@...nsource.wdc.com>,
        <bvanassche@....org>, <hch@....de>, <jejb@...ux.ibm.com>,
        <martin.petersen@...cle.com>, <hare@...e.de>, <satishkh@...co.com>,
        <sebaddel@...co.com>, <kartilak@...co.com>
CC:     <linux-doc@...r.kernel.org>, <linux-rdma@...r.kernel.org>,
        <linux-mmc@...r.kernel.org>, <linux-nvme@...ts.infradead.org>,
        <linux-s390@...r.kernel.org>, <linux-scsi@...r.kernel.org>,
        <mpi3mr-linuxdrv.pdl@...adcom.com>, <linux-block@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <nbd@...er.debian.org>,
        John Garry <john.garry@...wei.com>
Subject: [PATCH v2 6/6] blk-mq: Drop local variable for reserved tag

The local variable is now only referenced once so drop it.

Signed-off-by: John Garry <john.garry@...wei.com>
---
 block/blk-mq-tag.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index 509c35f080a9..b8cc8b41553f 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -266,7 +266,6 @@ static bool bt_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
 	struct blk_mq_hw_ctx *hctx = iter_data->hctx;
 	struct request_queue *q = iter_data->q;
 	struct blk_mq_tag_set *set = q->tag_set;
-	bool reserved = iter_data->reserved;
 	struct blk_mq_tags *tags;
 	struct request *rq;
 	bool ret = true;
@@ -276,7 +275,7 @@ static bool bt_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
 	else
 		tags = hctx->tags;
 
-	if (!reserved)
+	if (!iter_data->reserved)
 		bitnr += tags->nr_reserved_tags;
 	/*
 	 * We can hit rq == NULL here, because the tagging functions
@@ -337,12 +336,11 @@ static bool bt_tags_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
 {
 	struct bt_tags_iter_data *iter_data = data;
 	struct blk_mq_tags *tags = iter_data->tags;
-	bool reserved = iter_data->flags & BT_TAG_ITER_RESERVED;
 	struct request *rq;
 	bool ret = true;
 	bool iter_static_rqs = !!(iter_data->flags & BT_TAG_ITER_STATIC_RQS);
 
-	if (!reserved)
+	if (!(iter_data->flags & BT_TAG_ITER_RESERVED))
 		bitnr += tags->nr_reserved_tags;
 
 	/*
-- 
2.25.1