linux-kernel - Re: [PATCH 1/1 v4] arm: fault.c: Port OOM changes into do_page

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Date:	Sat, 19 Nov 2011 22:18:48 -0500
From:	"kautuk.c @samsung.com" <consul.kautuk@...il.com>
To:	Russell King <linux@....linux.org.uk>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>, Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Kautuk Consul <consul.kautuk@...il.com>
Subject: Re: [PATCH 1/1 v4] arm: fault.c: Port OOM changes into do_page_fault

Hi,

>
> These changes reduce the mmap_sem hold time, which is crucial
> during OOM killer invocation.
>
> Port these changes to ARM.

Did anyone get a chance to look at version 4 of this patch ?

I have incorporated changes as suggested by Russell during version 3 review.

Can I improve this patch in any way ?

>
> Without these changes, my ARM board encounters many hang and livelock
> scenarios.
> After applying this patch, OOM feature performance improves according to
> my testing.
>
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