linux-kernel - Re: [PATCH 2/2] use oom_killer_disabled in page fault oom path

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Message-ID: <BANLkTimzYwa87NJ0F4AEN=9EZs=3-5SBaA@mail.gmail.com>
Date:	Tue, 26 Apr 2011 17:07:34 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	Dave Young <hidave.darkstar@...il.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	kamezawa.hiroyu@...fujitsu.com, kosaki.motohiro@...fujitsu.com
Subject: Re: [PATCH 2/2] use oom_killer_disabled in page fault oom path

On Tue, Apr 26, 2011 at 2:31 PM, Dave Young <hidave.darkstar@...il.com> wrote:
> Currently oom_killer_disabled is only used in __alloc_pages_slowpath,
> For page fault oom case it is not considered. One use case is
> virtio balloon driver, when memory pressure is high, virtio ballooning
> will cause oom killing due to such as page fault oom.

Other mm guys already accepted but sorry I can't understand your point
since I am not familiar with virtio.

Now oom_killer_disabled is used by only hibernation and hibernation
freezes processes so page fault shouldn't happen.

Now are you using oom_killer_disabled in virtio?
Could you elaborate use case ?

Thanks.
-- 
Kind regards,
Minchan Kim
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