linux-kernel - Re: [PATCH 08/40] mm: kmem_cache

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Message-Id: <1178303538.2767.9.camel@lappy>
Date:	Fri, 04 May 2007 20:32:18 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Christoph Lameter <clameter@....com>
Cc:	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>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: [PATCH 08/40] mm: kmem_cache_objsize

On Fri, 2007-05-04 at 11:30 -0700, Christoph Lameter wrote:
> On Fri, 4 May 2007, Peter Zijlstra wrote:
> 
> > > Ok so you really need the number of objects per page? If you know the 
> > > number of objects then you can calculate the pages needed which would be 
> > > the maximum memory needed?
> > 
> > Yes, that would work.
> 
> Hmmm... Maybe lets have
> 
> unsigned kmem_estimate_pages(struct kmem_cache *slab_cache, int objects)
> 
> which would calculate the worst case memory scenario for allocation the 
> number of indicated objects?

Perfectly fine with me, Pekka, any objections?

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