Re: [PATCH 6/6] nvme: allow revalidate to set a namespace read-only

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On Tue, Dec 08, 2020 at 05:28:29PM +0100, Christoph Hellwig wrote:
> Unconditionally call set_disk_ro now that it only updates the hardware
> state.  This allows to properly set up the Linux devices read-only when
> the controller turns a previously writable namespace read-only.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> Reviewed-by: Keith Busch <kbusch@xxxxxxxxxx>
> Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
> ---
>  drivers/nvme/host/core.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index ce1b6151944131..3a0557ccc9fc5d 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2114,9 +2114,8 @@ static void nvme_update_disk_info(struct gendisk *disk,
>  	nvme_config_discard(disk, ns);
>  	nvme_config_write_zeroes(disk, ns);
>  
> -	if ((id->nsattr & NVME_NS_ATTR_RO) ||
> -	    test_bit(NVME_NS_FORCE_RO, &ns->flags))
> -		set_disk_ro(disk, true);
> +	set_disk_ro(disk, (id->nsattr & NVME_NS_ATTR_RO) ||
> +		test_bit(NVME_NS_FORCE_RO, &ns->flags));
>  }
>  
>  static inline bool nvme_first_scan(struct gendisk *disk)
> -- 
> 2.29.2
> 

Reviewed-by: Ming Lei <ming.lei@xxxxxxxxxx>

-- 
Ming

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