Date: Tue, 13 Jan 2009 16:16:25 -0800 (PST)
Message-Id: <20090113.161625.111759506.davem@davemloft.net>
To: zbr@ioremap.net
Cc: dada1@cosmosbay.com, w@1wt.eu, ben@zeus.com, jarkao2@gmail.com,
       mingo@elte.hu, linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
       jens.axboe@oracle.com
Subject: Re: [PATCH] tcp: splice as many packets as possible at once
From: David Miller <davem@davemloft.net>
In-Reply-To: <20090114001345.GB512@ioremap.net>
References: <20090111160548.GA362@ioremap.net>
	<20090113.160721.68474279.davem@davemloft.net>
	<20090114001345.GB512@ioremap.net>
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From: Evgeniy Polyakov <zbr@ioremap.net>
Date: Wed, 14 Jan 2009 03:13:45 +0300

> What is the best solution for the data corruption bug? To copy the data
> all the time or implement own allocator to be used in alloc_skb and
> friends to allocate the head? I think it can be done transparently for
> the drivers. I can volunteer for this :)
> The first one is more appropriate for the current bugfix-only stage,
> but this will result in the whole release being too slow.

I am looking into this right now.

I wish there were some way we could make this code grab and release a
reference to the SKB data area (I mean skb_shinfo(skb)->dataref) to
accomplish it's goals.
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