linux-kernel - Re: [QUICKLIST 1/5] Quicklists for page table pages V3

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Message-ID: <Pine.LNX.4.64.0703191655190.13879@schroedinger.engr.sgi.com>
Date:	Mon, 19 Mar 2007 16:57:55 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	linux-mm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [QUICKLIST 1/5] Quicklists for page table pages V3

On Mon, 19 Mar 2007, Andrew Morton wrote:

> Has it been proven that quicklists are superior to simply going direct to the
> page allocator for these pages?

Yes.
 
> Would it provide a superior solution if we were to a) stop zeroing out the
> pte's when doing a fullmm==1 teardown and b) go direct to the page allocator
> for these pages?

I doubt it. The zeroing is a by product of our way of serializing pte 
handling. Its going to be difficult to change that.


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