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Date: Fri, 22 Aug 2008 08:56:26 -0500
From: Christoph Lameter <cl@linux-foundation.org>
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To: Robin Holt <holt@sgi.com>
CC: Andrew Morton <akpm@linux-foundation.org>,
       KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
       linux-kernel@vger.kernel.org, linux-mm@kvack.org,
       tokunaga.keiich@jp.fujitsu.com
Subject: Re: [RFC][PATCH 1/2] Show quicklist at meminfo
References: <20080820113559.f559a411.akpm@linux-foundation.org> <2f11576a0808210036icd9b61eue58049f15381bcc8@mail.gmail.com> <20080822100049.F562.KOSAKI.MOTOHIRO@jp.fujitsu.com> <20080821212847.f7fc936b.akpm@linux-foundation.org> <20080822132309.GB9501@sgi.com>
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Robin Holt wrote:
> 
> Could we maybe add a per_cpu off-node quicklist and just always free
> that in check_pgt_cache?  That would get us back the freeing of off-node
> page tables.

Yes that is what I suggested and if you check your email from last year then
you will find an internal discussion and patches for such an approach.