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Date: Fri, 23 Jul 2010 16:14:14 +0800
From: Wu Fengguang <fengguang.wu@intel.com>
Subject: Re: [RFC]mm: batch activate_page() to reduce lock contention
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To: "Li, Shaohua" <shaohua.li@intel.com>
Cc: Minchan Kim <minchan.kim@gmail.com>, linux-mm <linux-mm@kvack.org>, Andrew Morton <akpm@linux-foundation.org>, Andi Kleen <andi@firstfloor.org>
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On Fri, Jul 23, 2010 at 04:12:24PM +0800, Wu Fengguang wrote:
> > Each node has zones, so a pagevec[MAX_NR_ZONES] doesn't work here.
> 
> It's actually pagevec[MAX_NR_ZONES][nr_cpus], where the CPU dimension
> selects a NUMA node. So it looks like a worthy optimization.

Ah sorry, please ignore this. activate_page() may be called from any CPU..

Thanks,
Fengguang

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