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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Shaohua Li <shaohua.li@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Hugh Dickins <hughd@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Rik van Riel <riel@redhat.com>, Lin Ming <mlin@ss.pku.edu.cn>,
	Justin Piszcz <jpiszcz@lucidpixels.com>,
	Pawel Sikora <pluto@agmk.net>
Subject: Re: [BUG] infinite loop in find_get_pages()
Date: Thu, 15 Sep 2011 06:02:59 +0200	[thread overview]
Message-ID: <1316059379.2835.7.camel@edumazet-laptop> (raw)
In-Reply-To: <1316047519.29510.122.camel@sli10-conroe>

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@gmail.com>
> Signed-off-by: Shaohua Li <shaohua.li@intel.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 !



  parent reply	other threads:[~2011-09-15  4:03 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-13 19:23 Eric Dumazet
2011-09-13 23:53 ` Andrew Morton
2011-09-14  0:21   ` Eric Dumazet
2011-09-14  0:34   ` Lin Ming
2011-09-15 10:47     ` Pawel Sikora
2011-09-15 11:11       ` Justin Piszcz
2011-09-15 12:04         ` Eric Dumazet
2011-09-15 15:00           ` Paweł Sikora
2011-09-15 15:15             ` Eric Dumazet
     [not found] ` <CA+55aFyG3-3_gqGjqUmsTAHWfmNLMdQVf4XqUZrDAGMBxgur=Q@mail.gmail.com>
2011-09-14  6:48   ` Linus Torvalds
2011-09-14  6:53     ` Eric Dumazet
2011-09-14  7:32       ` Shaohua Li
2011-09-14  8:20         ` Shaohua Li
2011-09-14  8:43           ` Eric Dumazet
2011-09-14  8:55             ` Shaohua Li
2011-09-14 20:38               ` Hugh Dickins
2011-09-14 20:55                 ` Eric Dumazet
2011-09-14 21:53                   ` Hugh Dickins
2011-09-14 22:08                     ` Eric Dumazet
2011-09-14 22:37                     ` Linus Torvalds
2011-09-15  0:45                       ` Shaohua Li
2011-09-15  2:00                         ` Hugh Dickins
2011-09-15  4:02                         ` Eric Dumazet [this message]
     [not found] ` <CA+55aFx41_Z4TjjJwPuE21Q8oD3aGWtQwh45DUiCjPVD-wCJXw@mail.gmail.com>
2011-09-14  6:48   ` Linus Torvalds

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