netdev - Re: [PATCH 08/40] mm: kmem_cache

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Message-Id: <1178295355.24217.49.camel@twins>
Date:	Fri, 04 May 2007 18:15:55 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Christoph Lameter <clameter@....com>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	netdev@...r.kernel.org,
	Trond Myklebust <trond.myklebust@....uio.no>,
	Thomas Graf <tgraf@...g.ch>,
	David Miller <davem@...emloft.net>,
	James Bottomley <James.Bottomley@...eleye.com>,
	Mike Christie <michaelc@...wisc.edu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Daniel Phillips <phillips@...gle.com>
Subject: Re: [PATCH 08/40] mm: kmem_cache_objsize

On Fri, 2007-05-04 at 09:09 -0700, Christoph Lameter wrote:
> On Fri, 4 May 2007, Pekka Enberg wrote:
> 
> > On 5/4/07, Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:
> > > Expost buffer_size in order to allow fair estimates on the actual space
> > > used/needed.
> 
> We already have ksize?

ksize gives the internal size, whereas these give the external size.

I need to know how much space I need to reserve, hence I need the
external size; whereas normally you want to know how much space you have
available, which is what ksize gives.

Didn't we have this discussion last time?

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