linux-kernel - Re: [RFC PATCH] net: add dataref destructor to sk

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Date:	Tue, 10 Nov 2009 16:45:44 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Gregory Haskins <ghaskins@...ell.com>
Cc:	alacrityvm-devel@...ts.sourceforge.net, herbert.xu@...hat.com,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [RFC PATCH] net: add dataref destructor to sk_buff

On Tue, Nov 10, 2009 at 09:11:10AM -0500, Gregory Haskins wrote:
> > You are comparing with skb destructors, not skb data destructors :) skb
> > data destructor is Rusty's patch which he wanted to use for vringfd.  I
> > mean e.g. this:
> > http://lists.openwall.net/netdev/2008/04/18/7
> 
> Ah, I wasn't aware.  I believe Anthony Ligouri had pointed me at this
> same patch earlier this year.  However, more recently when I saw
> skb->destructor() in mainline (seemingly from Rusty), I thought it had
> been accepted and didn't investigate further.

skb->destructor seems to be there as far back as 2.2.0
http://lxr.linux.no/#linux-old+v2.2.0/include/linux/skbuff.h

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MST
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