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From:   Christoph Hellwig <hch@lst.de>
To:     Jens Axboe <axboe@kernel.dk>
Cc:     Josef Bacik <josef@toxicpanda.com>,
        Minchan Kim <minchan@kernel.org>,
        Stefan Haberland <sth@linux.ibm.com>,
        Jan Hoeppner <hoeppner@linux.ibm.com>,
        Joseph Qi <joseph.qi@linux.alibaba.com>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Pavel Machek <pavel@ucw.cz>, Len Brown <len.brown@intel.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        linux-kernel@vger.kernel.org, nbd@other.debian.org,
        linux-ide@vger.kernel.org, linux-s390@vger.kernel.org,
        linux-fsdevel@vger.kernel.org, ocfs2-devel@oss.oracle.com,
        linux-pm@vger.kernel.org, linux-mm@kvack.org,
        linux-block@vger.kernel.org
Subject: [PATCH 06/14] zram: cleanup backing_dev_store
Date:   Mon, 21 Sep 2020 09:19:50 +0200
Message-Id: <20200921071958.307589-7-hch@lst.de>
In-Reply-To: <20200921071958.307589-1-hch@lst.de>
References: <20200921071958.307589-1-hch@lst.de>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
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Use blkdev_get_by_dev instead of bdgrab + blkdev_get.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/block/zram/zram_drv.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index a356275605b104..91ccfe444525b4 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -491,9 +491,10 @@ static ssize_t backing_dev_store(struct device *dev,
 		goto out;
 	}
 
-	bdev = bdgrab(I_BDEV(inode));
-	err = blkdev_get(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL, zram);
-	if (err < 0) {
+	bdev = blkdev_get_by_dev(inode->i_rdev,
+			FMODE_READ | FMODE_WRITE | FMODE_EXCL, zram);
+	if (IS_ERR(bdev)) {
+		err = PTR_ERR(bdev);
 		bdev = NULL;
 		goto out;
 	}
-- 
2.28.0