linux-kernel - Re: [PATCH 08/29] mm: kmem_cache_objs_to

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Message-ID: <84144f020702220145h4f670ec6g428dc046ee9dcc71@mail.gmail.com>
Date:	Thu, 22 Feb 2007 11:45:53 +0200
From:	"Pekka Enberg" <penberg@...helsinki.fi>
To:	"Peter Zijlstra" <a.p.zijlstra@...llo.nl>
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>
Subject: Re: [PATCH 08/29] mm: kmem_cache_objs_to_pages()

Hi Peter,

On Wed, 2007-02-21 at 17:47 +0200, Pekka Enberg wrote:
> > So how does this work? You ask the slab allocator how many pages you
> > need for a given number of objects and then those pages are available
> > to it via the page allocator? Can other users also dip into those
> > reserves?

On 2/22/07, Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:
> Everybody (ab)using PF_MEMALLOC or the new __GFP_EMERGENCY.

So you are only interested in rough estimation of how much many pages
you need for a given amount of objects? Why not use ksize() for that
then?

                                    Pekka
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