linux-kernel - Re: [PATCH 1/3] fixup! mm: alloc_contig_freed

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Message-ID: <1316622651.16137.311.camel@nimitz>
Date:	Wed, 21 Sep 2011 09:30:51 -0700
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Michal Nazarewicz <mnazarewicz@...gle.com>
Cc:	Marek Szyprowski <m.szyprowski@...sung.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-media@...r.kernel.org, linux-mm@...ck.org,
	linaro-mm-sig@...ts.linaro.org,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Russell King <linux@....linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Ankita Garg <ankita@...ibm.com>,
	Daniel Walker <dwalker@...eaurora.org>,
	Mel Gorman <mel@....ul.ie>, Arnd Bergmann <arnd@...db.de>,
	Jesse Barker <jesse.barker@...aro.org>,
	Jonathan Corbet <corbet@....net>,
	Shariq Hasnain <shariq.hasnain@...aro.org>,
	Chunsang Jeong <chunsang.jeong@...aro.org>
Subject: Re: [PATCH 1/3] fixup! mm: alloc_contig_freed_pages() added

On Wed, 2011-09-21 at 18:26 +0200, Michal Nazarewicz wrote:
> -               page += 1 << order;
> +
> +               if (zone_pfn_same_memmap(pfn - count, pfn))
> +                       page += count;
> +               else
> +                       page = pfn_to_page(pfn);
>         }

That all looks sane to me and should fix the bug I brought up.

-- Dave

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