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From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Subject: Re: [PATCH 03/25] Do not check NUMA node ID when the caller knows the node is valid
In-Reply-To: <1240266011-11140-4-git-send-email-mel@csn.ul.ie>
References: <1240266011-11140-1-git-send-email-mel@csn.ul.ie> <1240266011-11140-4-git-send-email-mel@csn.ul.ie>
Message-Id: <20090421114121.F11F.A69D9226@jp.fujitsu.com>
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Date: Tue, 21 Apr 2009 11:44:42 +0900 (JST)
Sender: owner-linux-mm@kvack.org
To: Mel Gorman <mel@csn.ul.ie>
Cc: kosaki.motohiro@jp.fujitsu.com, Linux Memory Management List <linux-mm@kvack.org>, Christoph Lameter <cl@linux-foundation.org>, Nick Piggin <npiggin@suse.de>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Lin Ming <ming.m.lin@intel.com>, Zhang Yanmin <yanmin_zhang@linux.intel.com>, Peter Zijlstra <peterz@infradead.org>, Pekka Enberg <penberg@cs.helsinki.fi>, Andrew Morton <akpm@linux-foundation.org>
List-ID: <linux-mm.kvack.org>

> Callers of alloc_pages_node() can optionally specify -1 as a node to mean
> "allocate from the current node". However, a number of the callers in fast
> paths know for a fact their node is valid. To avoid a comparison and branch,
> this patch adds alloc_pages_exact_node() that only checks the nid with
> VM_BUG_ON(). Callers that know their node is valid are then converted.
> 
> Signed-off-by: Mel Gorman <mel@csn.ul.ie>
> Reviewed-by: Christoph Lameter <cl@linux-foundation.org>

I think there still are convertable caller. (recently, caller increased a bit)
but it isn't important. anyway,

	Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>



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