linux-kernel - Re: [PATCH v2 1/3] xen/blkfront: read response from backend only once

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Message-ID: <YOgJ1GZFoKhRPHLX@Air-de-Roger>
Date:   Fri, 9 Jul 2021 10:33:24 +0200
From:   Roger Pau Monné <roger.pau@...rix.com>
To:     Juergen Gross <jgross@...e.com>
CC:     <xen-devel@...ts.xenproject.org>, <linux-block@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Jens Axboe <axboe@...nel.dk>, Jan Beulich <jbeulich@...e.com>
Subject: Re: [PATCH v2 1/3] xen/blkfront: read response from backend only once

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@...e.com>
> Reviewed-by: Jan Beulich <jbeulich@...e.com>

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

Thanks, Roger.