[PATCH 34/78] block: propagate BLKROSET to all partitions

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When setting the whole device read-only (or clearing the read-only
state), also update the policy for all partitions.  The s390 dasd
driver has awlways been doing this and it makes a lot of sense.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 block/ioctl.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/block/ioctl.c b/block/ioctl.c
index 6b785181344fe1..22f394d118c302 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -354,7 +354,10 @@ static int blkdev_roset(struct block_device *bdev, fmode_t mode,
 		if (ret)
 			return ret;
 	}
-	bdev->bd_part->policy = n;
+	if (bdev_is_partition(bdev))
+		bdev->bd_part->policy = n;
+	else
+		set_disk_ro(bdev->bd_disk, n);
 	return 0;
 }
 
-- 
2.29.2

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