linux-kernel - [PATCH RESEND 3/3] ublk: pass NULL to blk_mq_alloc

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Message-Id: <20230207070839.370817-4-ZiyangZhang@linux.alibaba.com>
Date:   Tue,  7 Feb 2023 15:08:39 +0800
From:   Ziyang Zhang <ZiyangZhang@...ux.alibaba.com>
To:     axboe@...nel.dk, ming.lei@...hat.com
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        joseph.qi@...ux.alibaba.com,
        Ziyang Zhang <ZiyangZhang@...ux.alibaba.com>
Subject: [PATCH RESEND 3/3] ublk: pass NULL to blk_mq_alloc_disk() as queuedata

queuedata is not referenced in ublk_drv and we can use driver_data
instead. Pass NULL to blk_mq_alloc_disk() as queuedata while allocating
ublk's gendisk.

Signed-off-by: Ziyang Zhang <ZiyangZhang@...ux.alibaba.com>
---
 drivers/block/ublk_drv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 06eddefdf02a..d83fe2c2b3ba 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -1578,7 +1578,7 @@ static int ublk_ctrl_start_dev(struct ublk_device *ub, struct io_uring_cmd *cmd)
 		goto out_unlock;
 	}
 
-	disk = blk_mq_alloc_disk(&ub->tag_set, ub);
+	disk = blk_mq_alloc_disk(&ub->tag_set, NULL);
 	if (IS_ERR(disk)) {
 		ret = PTR_ERR(disk);
 		goto out_unlock;
-- 
2.18.4