From: William Lee Irwin III <wli@holomorphy.com>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@osdl.org>,
marcelo.tosatti@cyclades.com, LKML <linux-kernel@vger.kernel.org>,
nickpiggin@yahoo.com.au
Subject: Re: [PATCH] oom killer (Core)
Date: Fri, 10 Dec 2004 10:00:31 -0800 [thread overview]
Message-ID: <20041210180031.GT2714@holomorphy.com> (raw)
In-Reply-To: <20041210175504.GY16322@dualathlon.random>
On Fri, Dec 10, 2004 at 09:43:36AM -0800, William Lee Irwin III wrote:
>> Well, the only way I see this happening is the process exiting followed
>> by use_mm() on init_mm for unobvious reasons (perhaps reasons not in
>> the tree).
On Fri, Dec 10, 2004 at 06:55:04PM +0100, Andrea Arcangeli wrote:
> I don't see the problem with use_mm. use_mm has either the mm set to
> ctx->mm or to NULL, and ctx->mm is set to the mm of the process calling
> io_setup.
> The only thing using init_mm is the idle task/swapper as far as I can
> tell, kernel threads and exiting tasks have a NULL mm.
Yet those don't appear in the tasklist, so some task in the tasklist
has to get ->mm set to &init_mm. The notion above was that the init_mm
check was to handle some out-of-tree attempt to do aio from kernel threads.
-- wli
next prev parent reply other threads:[~2004-12-10 18:01 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-01 9:49 [PATCH] oom killer (Core) tglx
2004-12-01 21:16 ` Andrea Arcangeli
2004-12-01 22:06 ` Thomas Gleixner
2004-12-01 22:33 ` Andrea Arcangeli
2004-12-02 3:36 ` Andrea Arcangeli
2004-12-02 11:09 ` Thomas Gleixner
2004-12-02 13:48 ` Thomas Gleixner
2004-12-02 16:47 ` Andrea Arcangeli
2004-12-02 16:55 ` Andrew Morton
2004-12-02 11:18 ` Marcelo Tosatti
2004-12-02 17:17 ` Thomas Gleixner
2004-12-02 17:27 ` Andrew Morton
2004-12-02 18:08 ` Andrea Arcangeli
2004-12-02 18:29 ` Andrew Morton
2004-12-02 19:01 ` Thomas Gleixner
2004-12-02 18:55 ` Thomas Gleixner
2004-12-02 19:07 ` Andrew Morton
2004-12-02 19:08 ` Thomas Gleixner
2004-12-02 19:22 ` Andrew Morton
2004-12-02 19:24 ` Thomas Gleixner
2004-12-02 20:11 ` Andre Tomt
2004-12-03 22:45 ` Thomas Gleixner
2004-12-02 23:47 ` Andrea Arcangeli
2004-12-03 14:41 ` Helge Hafting
2004-12-03 21:20 ` Thomas Gleixner
2004-12-05 21:14 ` Helge Hafting
2004-12-02 23:35 ` Andrea Arcangeli
2004-12-03 2:28 ` Andrea Arcangeli
2004-12-03 22:37 ` Thomas Gleixner
2004-12-03 22:51 ` Thomas Gleixner
2004-12-03 23:08 ` Andrea Arcangeli
2004-12-10 16:36 ` William Lee Irwin III
2004-12-10 17:35 ` Andrea Arcangeli
2004-12-10 17:43 ` William Lee Irwin III
2004-12-10 17:55 ` Andrea Arcangeli
2004-12-10 18:00 ` William Lee Irwin III [this message]
2004-12-10 18:15 ` Andrea Arcangeli
2004-12-10 18:19 ` William Lee Irwin III
2004-12-10 19:05 ` Andrea Arcangeli
2004-12-10 16:51 ` William Lee Irwin III
2004-12-03 21:10 ` Thomas Gleixner
2004-12-03 22:21 ` Andrea Arcangeli
2004-12-05 2:52 ` William Lee Irwin III
2004-12-05 13:38 ` Thomas Gleixner
2004-12-05 15:22 ` Andrea Arcangeli
2004-12-10 16:32 ` William Lee Irwin III
2004-12-10 16:52 ` Thomas Gleixner
2004-12-10 17:43 ` William Lee Irwin III
2004-12-10 17:47 ` William Lee Irwin III
2004-12-10 17:49 ` Andrea Arcangeli
2004-12-10 17:57 ` William Lee Irwin III
2004-12-12 0:12 ` William Lee Irwin III
2004-12-24 1:18 ` Andrea Arcangeli
-- strict thread matches above, loose matches on Subject: below --
2004-12-01 10:21 tvrtko.ursulin
2004-12-04 7:00 Voluspa
2004-12-04 8:08 ` Andrea Arcangeli
2004-12-04 12:42 Voluspa
2004-12-04 16:43 ` Andrea Arcangeli
2004-12-04 18:33 ` Thomas Gleixner
2004-12-04 21:02 ` Thomas Gleixner
2004-12-05 0:27 ` Andrea Arcangeli
2004-12-05 14:55 ` Thomas Gleixner
2004-12-05 15:34 ` Andrea Arcangeli
2004-12-05 16:29 ` Thomas Gleixner
2004-12-05 2:22 Voluspa
2004-12-05 8:32 Voluspa
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