[PATCH 1/6] dm: use bdev_read_only to check if a device is read-only
From: Christoph Hellwig <hch@lst.de>
Date: 2020-12-08 16:34:04
Also in:
ceph-devel, dm-devel, linux-nvme
Subsystem:
device-mapper (lvm), the rest · Maintainers:
Alasdair Kergon, Mike Snitzer, Mikulas Patocka, Benjamin Marzinski, Linus Torvalds
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 <redacted> 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