Re: [patch 1/2] arch: invoke oom-killer from page fault

From: Vineet Gupta
Date: Thu Jun 06 2013 - 02:50:00 EST

On 06/06/2013 10:06 AM, Johannes Weiner wrote:
> From: Johannes Weiner <hannes@xxxxxxxxxxx>
> Subject: [patch] mm: invoke oom-killer from remaining unconverted page fault
> handlers
> A few remaining architectures directly kill the page faulting task in
> an out of memory situation. This is usually not a good idea since
> that task might not even use a significant amount of memory and so may
> not be the optimal victim to resolve the situation.
> Since '1c0fe6e mm: invoke oom-killer from page fault' (2.6.29) there
> is a hook that architecture page fault handlers are supposed to call
> to invoke the OOM killer and let it pick the right task to kill.
> Convert the remaining architectures over to this hook.
> To have the previous behavior of simply taking out the faulting task
> the vm.oom_kill_allocating_task sysctl can be set to 1.
> Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>

Acked-by: Vineet Gupta <vgupta@xxxxxxxxxxxx> # for arch/arc bits
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