linux-kernel - Re: Memory corruption during hibernation since 2.6.31

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Date:	Fri, 30 Jul 2010 11:16:16 -0700
From:	Hugh Dickins <hughd@...gle.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Ondrej Zary <linux@...nbow-software.org>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Balbir Singh <balbir@...ibm.com>,
	Andrea Arcangeli <aarcange@...hat.com>
Subject: Re: Memory corruption during hibernation since 2.6.31

On Fri, Jul 30, 2010 at 3:43 AM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu@...fujitsu.com> wrote:
> plz wait until the next week..I found I can't post today ;(
>
> Maybe trying my quick hack patch (posted) will be enough small for
> backporting etc.

Absolutely.  I didn't intend my broader anxieties to distract from
your immediate scan_swap_map() fix.  If Ondrej finds that it does in
fact fix the corruption he's been seeing since 2.6.31, then I'd like
your fix to go straight to Linus for 2.6.35: once swap is 50% full,
your case is rather too likely to occur; whereas I'm worrying about
correctness in unlikely hypothetical circumstances.  But please do
credit Ondrej, and make clear that you're fixing an observed
corrution; and feel free to add my
Acked-by: Hugh Dickins <hughd@...gle.com>

Hugh
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