linux-kernel - Re: [BUG] infinite loop in find_get

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Message-ID: <1316059379.2835.7.camel@edumazet-laptop>
Date:	Thu, 15 Sep 2011 06:02:59 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Shaohua Li <shaohua.li@...el.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Rik van Riel <riel@...hat.com>,
	Lin Ming <mlin@...pku.edu.cn>,
	Justin Piszcz <jpiszcz@...idpixels.com>,
	Pawel Sikora <pluto@...k.net>
Subject: Re: [BUG] infinite loop in find_get_pages()

Le jeudi 15 septembre 2011 à 08:45 +0800, Shaohua Li a écrit :

> here is my patch if you want to close the issue at hand.
> 
> Subject: mm: account skipped entries to avoid looping in find_get_pages
> 
> The found entries by find_get_pages() could be all swap entries. In
> this case we skip the entries, but make sure the skipped entries are
> accounted, so we don't keep looping.
> Using nr_found > nr_skip to simplify code as suggested by Eric.
> 
> Reported-and-tested-by: Eric Dumazet <eric.dumazet@...il.com>
> Signed-off-by: Shaohua Li <shaohua.li@...el.com>
> 

Yep, I guess Hugh can refine it later.

I'm pulling latest Linus tree (including this patch) and redo a stress
session, including transparent hugepage games.

Thanks !


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