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

[Hannes Reinecke]

On 11/16/20 3:57 PM, Christoph Hellwig wrote:
> 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 at lst.de>
> ---
>   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;
>   }
>   
> 
Reviewed-by: Hannes Reinecke <hare at suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare at suse.de                              +49 911 74053 688
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