linux-kernel - [PATCH] nvme: Simplify the nvme_req

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Message-Id: <3ddb02eee7765d63328da3e1499a26da5cd20f1b.1603785673.git.baolin.wang@linux.alibaba.com>
Date:   Tue, 27 Oct 2020 16:15:16 +0800
From:   Baolin Wang <baolin.wang@...ux.alibaba.com>
To:     kbusch@...nel.org, axboe@...com, hch@....de, sagi@...mberg.me
Cc:     baolin.wang@...ux.alibaba.com, baolin.wang7@...il.com,
        linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] nvme: Simplify the nvme_req_qid()

Use the request's '->mq_hctx->queue_num' directly to simplify the
nvme_req_qid() function.

Signed-off-by: Baolin Wang <baolin.wang@...ux.alibaba.com>
---
 drivers/nvme/host/nvme.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index cc11113..0b62b62 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -178,7 +178,8 @@ static inline u16 nvme_req_qid(struct request *req)
 {
 	if (!req->q->queuedata)
 		return 0;
-	return blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(req)) + 1;
+
+	return req->mq_hctx->queue_num + 1;
 }
 
 /* The below value is the specific amount of delay needed before checking
-- 
1.8.3.1