linux-kernel - Re: [PATCH] use oom_killer

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Date:	Tue, 26 Apr 2011 11:19:22 +0800
From:	Dave Young <hidave.darkstar@...il.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] use oom_killer_disabled in all oom pathes

On Tue, Apr 26, 2011 at 11:14 AM, KOSAKI Motohiro
<kosaki.motohiro@...fujitsu.com> wrote:
>> On Tue, Apr 26, 2011 at 10:57 AM, KOSAKI Motohiro
>> <kosaki.motohiro@...fujitsu.com> wrote:
>> >> oom_killer_disable should be a global switch, also fit for oom paths
>> >> other than __alloc_pages_slowpath
>> >>
>> >> Here add it to mem_cgroup_handle_oom and pagefault_out_of_memory as well.
>> >
>> > Can you please explain more? Why should? Now oom_killer_disabled is used
>> > only hibernation path. so, Why pagefault and memcg allocation will be happen?
>>
>> Indeed I'm using it in virtio balloon test, oom killer triggered when
>> memory pressure is high.
>>
>> literally oom_killer_disabled scope should be global, isn't it?
>
> ok. virtio baloon seems fair usage. if you add new usage of oom_killer_disabled
> into the patch description, I'll ack this one.

Thanks, then I will resend the virtio balloon patch along with this.

-- 
Regards
dave
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