Re: [PATCH 4/4] xen-blkfront: atomically update queue limits

["Roger Pau Monné" <roger.pau@citrix.com>]

On Tue, Feb 20, 2024 at 09:49:35AM +0100, Christoph Hellwig wrote:
> Pass the initial queue limits to blk_mq_alloc_disk and use the
> blkif_set_queue_limits API to update the limits on reconnect.

Allocating queue_limits on the stack might be a bit risky, as I fear
this struct is likely to grow?

> Signed-off-by: Christoph Hellwig <hch@lst.de>

Acked-by: Roger Pau Monné <roger.pau@citrix.com>

Just one addition while you are already modifying a line.

> ---
>  drivers/block/xen-blkfront.c | 41 ++++++++++++++++++++----------------
>  1 file changed, 23 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
> index 7664638a0abbfa..b77707ca2c5aa6 100644
> --- a/drivers/block/xen-blkfront.c
> +++ b/drivers/block/xen-blkfront.c
> @@ -941,37 +941,35 @@ static const struct blk_mq_ops blkfront_mq_ops = {
>  	.complete = blkif_complete_rq,
>  };
>  
> -static void blkif_set_queue_limits(struct blkfront_info *info)
> +static void blkif_set_queue_limits(struct blkfront_info *info,

While there, could you also constify info?

Thanks, Roger.