netdev - Re: [PATCH net-next 2/2] openvswitch: Use zerocopy if applicable when performing the upcall

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Message-ID: <CAEP_g=8fOk-g6ZLpzefgg=_+MHxonp1AAs+H+jmZhFAcNMjMYQ@mail.gmail.com>
Date:	Mon, 10 Jun 2013 13:55:03 -0700
From:	Jesse Gross <jesse@...ira.com>
To:	David Miller <davem@...emloft.net>
Cc:	Thomas Graf <tgraf@...g.ch>, Eric Dumazet <eric.dumazet@...il.com>,
	netdev <netdev@...r.kernel.org>,
	"dev@...nvswitch.org" <dev@...nvswitch.org>
Subject: Re: [PATCH net-next 2/2] openvswitch: Use zerocopy if applicable when
 performing the upcall

On Mon, Jun 10, 2013 at 1:43 PM, David Miller <davem@...emloft.net> wrote:
> From: Jesse Gross <jesse@...ira.com>
> Date: Mon, 10 Jun 2013 13:34:23 -0700
>
>> Well, this is the slow path. I don't want to force userspace to deal
>> with this because it's an internal kernel optimization that is
>> platform-specific and requires carrying additional metadata around.
>
> I think the grounds for this rejection is over the top and
> unreasonable.

I didn't reject it and in fact, I expect it to go in. I asked for
numbers as to how this affects the common case.
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