linux-kernel - Re: [PATCH] Export symbol ksize()

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Message-Id: <1234749279.5669.225.camel@calx>
Date:	Sun, 15 Feb 2009 19:54:39 -0600
From:	Matt Mackall <mpm@...enic.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	Christoph Lameter <cl@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-crypto@...r.kernel.org, Geert.Uytterhoeven@...ycom.com
Subject: Re: [PATCH] Export symbol ksize()

On Mon, 2009-02-16 at 09:52 +0800, Herbert Xu wrote:
> On Sun, Feb 15, 2009 at 07:28:46PM -0600, Matt Mackall wrote:
> >
> > Yeah. That sucks. We should probably stick in an skb-friendly slab size
> > and see what happens on network benchmarks.
> 
> I don't see how that's going to help since we don't want it to
> cross page boundaries either (having just wasted a day tracking
> down a virtual networking bug because of slab debugging and
> crossing page boundaries).

I'll bite.. what's wrong with page boundaries? Do we play per-SKB TLB
games in virtual network drivers?

-- 
http://selenic.com : development and support for Mercurial and Linux


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