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From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: "Martin K . Petersen" <martin.petersen@oracle.com>,
	Oleksii Kurochko <olkuroch@cisco.com>,
	Sagi Grimberg <sagi@grimberg.me>,
	Mike Snitzer <snitzer@redhat.com>,
	Ilya Dryomov <idryomov@gmail.com>,
	Dongsheng Yang <dongsheng.yang@easystack.cn>,
	ceph-devel@vger.kernel.org, dm-devel@redhat.com,
	linux-block@vger.kernel.org, linux-nvme@lists.infradead.org,
	Ming Lei <ming.lei@redhat.com>, Hannes Reinecke <hare@suse.de>
Subject: [PATCH 1/6] dm: use bdev_read_only to check if a device is read-only
Date: Tue,  8 Dec 2020 17:28:24 +0100
Message-ID: <20201208162829.2424563-2-hch@lst.de> (raw)
In-Reply-To: <20201208162829.2424563-1-hch@lst.de>

dm-thin and dm-cache also work on partitions, so use the proper
interface to check if the device is read-only.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
---
 drivers/md/dm-cache-metadata.c | 2 +-
 drivers/md/dm-thin-metadata.c  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/md/dm-cache-metadata.c b/drivers/md/dm-cache-metadata.c
index af6d4f898e4c1d..89a73204dbf47f 100644
--- a/drivers/md/dm-cache-metadata.c
+++ b/drivers/md/dm-cache-metadata.c
@@ -449,7 +449,7 @@ static int __check_incompat_features(struct cache_disk_superblock *disk_super,
 	/*
 	 * Check for read-only metadata to skip the following RDWR checks.
 	 */
-	if (get_disk_ro(cmd->bdev->bd_disk))
+	if (bdev_read_only(cmd->bdev))
 		return 0;
 
 	features = le32_to_cpu(disk_super->compat_ro_flags) & ~DM_CACHE_FEATURE_COMPAT_RO_SUPP;
diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 6ebb2127f3e2e0..e75b20480e460e 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -636,7 +636,7 @@ static int __check_incompat_features(struct thin_disk_superblock *disk_super,
 	/*
 	 * Check for read-only metadata to skip the following RDWR checks.
 	 */
-	if (get_disk_ro(pmd->bdev->bd_disk))
+	if (bdev_read_only(pmd->bdev))
 		return 0;
 
 	features = le32_to_cpu(disk_super->compat_ro_flags) & ~THIN_FEATURE_COMPAT_RO_SUPP;
-- 
2.29.2


  reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-08 16:28 split hard read-only vs read-only policy v3 Christoph Hellwig
2020-12-08 16:28 ` Christoph Hellwig [this message]
2020-12-08 16:28 ` [PATCH 2/6] block: remove the NULL bdev check in bdev_read_only Christoph Hellwig
2020-12-08 16:45   ` Hannes Reinecke
2020-12-08 16:28 ` [PATCH 3/6] block: add a hard-readonly flag to struct gendisk Christoph Hellwig
2020-12-08 16:28 ` [PATCH 4/6] block: propagate BLKROSET on the whole device to all partitions Christoph Hellwig
2020-12-08 16:47   ` Hannes Reinecke
2020-12-09  2:51   ` Ming Lei
2020-12-08 16:28 ` [PATCH 5/6] rbd: remove the ->set_read_only method Christoph Hellwig
2020-12-09  2:52   ` Ming Lei
2020-12-08 16:28 ` [PATCH 6/6] nvme: allow revalidate to set a namespace read-only Christoph Hellwig
2020-12-08 16:49   ` Hannes Reinecke
2020-12-09  2:54   ` Ming Lei
  -- strict thread matches above, loose matches on Subject: below --
2021-01-09 10:42 split hard read-only vs read-only policy v3 (resend) Christoph Hellwig
2021-01-09 10:42 ` [PATCH 1/6] dm: use bdev_read_only to check if a device is read-only Christoph Hellwig
2020-12-07 13:19 split hard read-only vs read-only policy v2 Christoph Hellwig
2020-12-07 13:19 ` [PATCH 1/6] dm: use bdev_read_only to check if a device is read-only Christoph Hellwig
2020-12-08  5:23   ` Martin K. Petersen
2020-12-08  9:59   ` Ming Lei

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