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From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Kautuk Consul <consul.kautuk@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>, Ingo Molnar <mingo@elte.hu>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/1 v5] arm: fault.c: Port OOM changes into do_page_fault
Date: Sat, 26 Nov 2011 23:50:32 +0000	[thread overview]
Message-ID: <20111126235032.GC9581@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1321986690-6079-1-git-send-email-consul.kautuk@gmail.com>

On Tue, Nov 22, 2011 at 01:31:30PM -0500, Kautuk Consul wrote:
> Commit d065bd810b6deb67d4897a14bfe21f8eb526ba99
> (mm: retry page fault when blocking on disk transfer) and
> commit 37b23e0525d393d48a7d59f870b3bc061a30ccdb
> (x86,mm: make pagefault killable)
> 
> The above commits introduced changes into the x86 pagefault handler
> for making the page fault handler retryable as well as killable.
> 
> These changes reduce the mmap_sem hold time, which is crucial
> during OOM killer invocation.
> 
> Port these changes to ARM.
> 
> Without these changes, my ARM board encounters many hang and livelock
> scenarios.
> After applying this patch, OOM feature performance improves according to
> my testing.
> 
> Signed-off-by: Kautuk Consul <consul.kautuk@gmail.com>

Thanks.  I think this is fine.  Please put it in the patch system so it's
not forgotten, and I'll get to it sometime during the next week.  Thanks.

  reply	other threads:[~2011-11-26 23:50 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-22 18:31 Kautuk Consul
2011-11-26 23:50 ` Russell King - ARM Linux [this message]
2011-11-27  5:58   ` Kautuk Consul
2011-11-27 12:56     ` Will Deacon
2011-12-01  7:40       ` Kautuk Consul
  -- strict thread matches above, loose matches on Subject: below --
2011-11-22 18:16 Kautuk Consul
2011-11-22 18:33 ` kautuk.c @samsung.com
2011-11-22 19:17   ` Russell King - ARM Linux
2011-11-23  3:23     ` kautuk.c @samsung.com
2011-11-23  3:36       ` kautuk.c @samsung.com

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