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From: Andrew Morton <akpm@osdl.org>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [oom]: [0/4] fix OOM deadlock running OAST
Date: Wed, 23 Jun 2004 15:16:59 -0700	[thread overview]
Message-ID: <20040623151659.70333c6d.akpm@osdl.org> (raw)
In-Reply-To: <0406231407.HbLbJbXaHbKbWa5aJb1a4aKb0a3aKb1a0a2aMbMbYa3aLbMb3aJbWaJbXaMbLb1a342@holomorphy.com>

William Lee Irwin III <wli@holomorphy.com> wrote:
>
> While running OAST to test 2.6's maximum client capacity, the kernel
> deadlocked instead of properly OOM'ing. The obvious cause was the
> line if (nr_swap_pages > 0) in out_of_memory(), which fails to account
> for pinned allocations. This can't simply be removed.

It all seems like rather a lot of fuss.

It should be the case that zone->all_unreclaimable is set by the time this
happens.  Did you consider feeding that into the oom-killing decision
instead?

  parent reply	other threads:[~2004-06-23 22:17 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-06-23 21:07 [oom]: [0/4] fix OOM deadlock running OAST William Lee Irwin III
2004-06-23 21:07 ` [oom]: [1/4] add __GFP_WIRED to pinned allocations William Lee Irwin III
2004-06-23 21:07   ` [oom]: [2/4] add nr_wired to page_state William Lee Irwin III
2004-06-23 21:07     ` [oom]: [3/4] track wired pages on a per-zone basis William Lee Irwin III
2004-06-23 21:07       ` [oom]: [4/4] check __GFP_WIRED in out_of_memory() William Lee Irwin III
2004-06-23 21:29       ` [oom]: [3/4] track wired pages on a per-zone basis William Lee Irwin III
2004-06-23 22:15       ` Andrew Morton
2004-06-23 22:28         ` William Lee Irwin III
2004-06-23 22:05   ` [oom]: [1/4] add __GFP_WIRED to pinned allocations Andrew Morton
2004-06-23 22:22     ` William Lee Irwin III
2004-06-23 22:36       ` Andrew Morton
2004-06-23 22:16 ` Andrew Morton [this message]
2004-06-23 22:31   ` [oom]: [0/4] fix OOM deadlock running OAST William Lee Irwin III
2004-06-23 22:37     ` Andrew Morton
2004-06-23 23:07       ` William Lee Irwin III
2004-06-23 23:38         ` Andrew Morton
2004-06-24  0:03           ` William Lee Irwin III
2004-06-24  0:18             ` Andrew Morton
2004-06-24  0:26               ` William Lee Irwin III
2004-06-24  0:32                 ` William Lee Irwin III
2004-06-24  1:07                   ` Andrew Morton
2004-06-24  1:24                     ` William Lee Irwin III
2004-06-24  1:52                       ` William Lee Irwin III
2004-06-24  2:01                         ` Andrew Morton
2004-06-24  2:15                           ` William Lee Irwin III
2004-06-24 14:16                 ` Marcelo Tosatti
2004-06-24 15:18                   ` William Lee Irwin III
2004-06-24 15:19                     ` William Lee Irwin III
2004-06-24 15:23                   ` William Lee Irwin III
2004-06-24 16:55                     ` Marcelo Tosatti
2004-06-25 15:18         ` Rik van Riel

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