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From:   Christoph Hellwig <hch@lst.de>
To:     Jens Axboe <axboe@kernel.dk>
Cc:     Denis Efremov <efremov@linux.com>, Tim Waugh <tim@cyberelk.net>,
        Michal Simek <michal.simek@xilinx.com>,
        Borislav Petkov <bp@alien8.de>,
        "David S. Miller" <davem@davemloft.net>,
        Song Liu <song@kernel.org>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Finn Thain <fthain@telegraphics.com.au>,
        Michael Schmitz <schmitzmic@gmail.com>,
        linux-m68k@lists.linux-m68k.org, linux-block@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org,
        linux-raid@vger.kernel.org, linux-scsi@vger.kernel.org,
        linux-fsdevel@vger.kernel.org,
        Johannes Thumshirn <johannes.thumshirn@wdc.com>
Subject: [PATCH 16/19] sd: use bdev_check_media_change
Date:   Tue,  8 Sep 2020 16:53:44 +0200
Message-Id: <20200908145347.2992670-17-hch@lst.de>
In-Reply-To: <20200908145347.2992670-1-hch@lst.de>
References: <20200908145347.2992670-1-hch@lst.de>
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Switch to use bdev_check_media_change instead of check_disk_change and
call sd_revalidate_disk manually.  As sd also calls sd_revalidate_disk
manually during probe and open, , the extra call into ->revalidate_disk
from bdev_disk_changed is not required either, so stop wiring up the
method.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
---
 drivers/scsi/sd.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 2bec8cd526164d..d020639c28c6ca 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1381,8 +1381,10 @@ static int sd_open(struct block_device *bdev, fmode_t mode)
 	if (!scsi_block_when_processing_errors(sdev))
 		goto error_out;
 
-	if (sdev->removable || sdkp->write_prot)
-		check_disk_change(bdev);
+	if (sdev->removable || sdkp->write_prot) {
+		if (bdev_check_media_change(bdev))
+			sd_revalidate_disk(bdev->bd_disk);
+	}
 
 	/*
 	 * If the drive is empty, just let the open fail.
@@ -1843,7 +1845,6 @@ static const struct block_device_operations sd_fops = {
 	.compat_ioctl		= sd_compat_ioctl,
 #endif
 	.check_events		= sd_check_events,
-	.revalidate_disk	= sd_revalidate_disk,
 	.unlock_native_capacity	= sd_unlock_native_capacity,
 	.report_zones		= sd_zbc_report_zones,
 	.pr_ops			= &sd_pr_ops,
-- 
2.28.0