linux-kernel - Re: Data corruption issue with splice() on 2.6.27.10

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Message-ID: <20090112211108.GA11134@gondor.apana.org.au>
Date:	Tue, 13 Jan 2009 08:11:08 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Evgeniy Polyakov <zbr@...emap.net>
Cc:	Jarek Poplawski <jarkao2@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Jens Axboe <jens.axboe@...cle.com>, Willy Tarreau <w@....eu>,
	Changli Gao <xiaosuo@...il.com>, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: Data corruption issue with splice() on 2.6.27.10

On Mon, Jan 12, 2009 at 03:59:14PM +0300, Evgeniy Polyakov wrote:
>
> That's the part I referred to as a network own allocator. We can have
> multiple kmem_caches though for the popular MTUs and round up the
> requested size otherwise.

No we can't use kmem_caches because we're relying on using the
page refereounce count to free the page.  It has to be naked
pages.

Cheers,
-- 
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