linux-kernel - Re: [PATCH] mm: setup pageblock_order before it's used by sparse

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Message-ID: <1341537867.6330.46.camel@pasglop>
Date:	Fri, 06 Jul 2012 11:24:27 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Mel Gorman <mgorman@...e.de>, Jiang Liu <jiang.liu@...wei.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tony Luck <tony.luck@...el.com>,
	Xishi Qiu <qiuxishi@...wei.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	David Rientjes <rientjes@...gle.com>,
	Minchan Kim <minchan@...nel.org>,
	Keping Chen <chenkeping@...wei.com>, linux-mm@...ck.org,
	stable@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jiang Liu <liuj97@...il.com>
Subject: Re: [PATCH] mm: setup pageblock_order before it's used by sparse

On Thu, 2012-07-05 at 18:00 -0700, Yinghai Lu wrote:
> cma, dma_continugous_reserve is referring pageblock_order very early
> too.
> just after init_memory_mapping() for x86's setup_arch.
> 
> so set pageblock_order early looks like my -v2 patch is right way.
> 
> current question: need to powerpc guys to check who to set that early.

I missed the beginning of that discussion, I'll try to dig a bit,
might take me til next week though as I'm about to be off for
the week-end.

Cheers,
Ben.


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