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Re: [PATCH v2 1/3] xen/blkfront: read response from backend only once
- To: Juergen Gross <jgross@xxxxxxxx>
- From: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Date: Fri, 9 Jul 2021 10:33:24 +0200
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- Cc: <xen-devel@xxxxxxxxxxxxxxxxxxxx>, <linux-block@xxxxxxxxxxxxxxx>, <linux-kernel@xxxxxxxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Thu, Jul 08, 2021 at 02:43:43PM +0200, Juergen Gross wrote:
> In order to avoid problems in case the backend is modifying a response
> on the ring page while the frontend has already seen it, just read the
> response into a local buffer in one go and then operate on that buffer
> only.
>
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Thanks, Roger.
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