linux-kernel - Re: [PATCH 22/22] slab: Use nr_online_nodes to check for a NUMA platform

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Message-ID: <84144f020904220737t3657ac01j4edf86cf61ef15e0@mail.gmail.com>
Date:	Wed, 22 Apr 2009 17:37:38 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Mel Gorman <mel@....ul.ie>
Cc:	Linux Memory Management List <linux-mm@...ck.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Nick Piggin <npiggin@...e.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Lin Ming <ming.m.lin@...el.com>,
	Zhang Yanmin <yanmin_zhang@...ux.intel.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 22/22] slab: Use nr_online_nodes to check for a NUMA 
	platform

On Wed, Apr 22, 2009 at 4:53 PM, Mel Gorman <mel@....ul.ie> wrote:
> SLAB currently avoids checking a bitmap repeatedly by checking once and
> storing a flag. When the addition of nr_online_nodes as a cheaper version
> of num_online_nodes(), this check can be replaced by nr_online_nodes.
>
> (Christoph did a patch that this is lifted almost verbatim from, hence the
> first Signed-off-by. Christoph, can you confirm you're ok with that?)
>
> Signed-off-by: Christoph Lameter <cl@...ux.com>
> Signed-off-by: Mel Gorman <mel@....ul.ie>

Reviewed-by: Pekka Enberg <penberg@...helsinki.fi>
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