linux-kernel - Re: [PATCH 1/3] page-allocator: Allow too high-order warning messages to be suppressed with __GFP

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Message-ID: <alpine.DEB.2.00.0907151255290.20452@chino.kir.corp.google.com>
Date:	Wed, 15 Jul 2009 12:55:42 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Mel Gorman <mel@....ul.ie>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Linux Memory Management List <linux-mm@...ck.org>,
	Heinz Diehl <htd@...cy-poultry.org>,
	David Miller <davem@...emloft.net>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [PATCH 1/3] page-allocator: Allow too high-order warning messages
 to be suppressed with __GFP_NOWARN

On Wed, 15 Jul 2009, Mel Gorman wrote:

> The page allocator warns once when an order >= MAX_ORDER is specified.
> This is to catch callers of the allocator that are always falling back
> to their worst-case when it was not expected. However, there are cases
> where the caller is behaving correctly but cannot suppress the warning.
> This patch allows the warning to be suppressed by the callers by
> specifying __GFP_NOWARN.
> 
> Signed-off-by: Mel Gorman <mel@....ul.ie>

Acked-by: David Rientjes <rientjes@...gle.com>
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