linux-kernel - Re: [PATCH] virtio_net: lower limit on buffer size

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Message-ID: <20170602202536.GA24411@fieldses.org>
Date:   Fri, 2 Jun 2017 16:25:36 -0400
From:   "J. Bruce Fields" <bfields@...ldses.org>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:     "Michael S. Tsirkin" <mst@...hat.com>,
        linux-kernel@...r.kernel.org,
        Mikulas Patocka <mpatocka@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Subject: Re: [PATCH] virtio_net: lower limit on buffer size

On Fri, Jun 02, 2017 at 12:34:57PM +0300, Sergei Shtylyov wrote:
> Hello!
> 
> On 6/2/2017 2:56 AM, Michael S. Tsirkin wrote:
> 
> >commit d85b758f72b0 "virtio_net: fix support for small rings"
> 
>    Commit d85b758f72b0 ("virtio_net: fix support for small rings")
> 
> >was supposed to increase the buffer size for small rings
> >but had an unintentional side effect of decreasing
> >it for large rings. This seems to break some setups -
> >it's not yet clear why, but increasing buffer size
> >back to what it was before helps.
> >
> >Fixes: d85b758f72b0 "virtio_net: fix support for small rings"
> 
> Fixes: d85b758f72b0 ("virtio_net: fix support for small rings")

I may be bikeshedding, but, personally I never do the parens--they're
redundant given the quotes, and space is often tight.

--b.

> 
> >Reported-by: Mikulas Patocka <mpatocka@...hat.com>
> >Reported-by: "J. Bruce Fields" <bfields@...ldses.org>
> >Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> [...]
> 
> MBR, Sergei