Date: Thu, 1 Aug 2013 17:59:24 -0400
From: Johannes Weiner <hannes@cmpxchg.org>
To: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Michal Hocko <mhocko@suse.cz>,
        David Rientjes <rientjes@google.com>,
        KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
        azurIt <azurit@pobox.sk>, linux-mm@kvack.org, cgroups@vger.kernel.org,
        x86@kernel.org, linux-arch@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [patch 2/6] arch: mm: do not invoke OOM killer on kernel fault
 OOM
Message-ID: <20130801215924.GO715@cmpxchg.org>
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On Mon, Jul 29, 2013 at 02:58:05PM -0400, KOSAKI Motohiro wrote:
> (7/25/13 6:25 PM), Johannes Weiner wrote:
> > Kernel faults are expected to handle OOM conditions gracefully (gup,
> > uaccess etc.), so they should never invoke the OOM killer.  Reserve
> > this for faults triggered in user context when it is the only option.
> > 
> > Most architectures already do this, fix up the remaining few.
> > 
> > Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
> 
> OK. but now almost all arch have the same page fault handler. So, I think
> we can implement arch generic page fault handler in future. Ah, ok, never
> mind if you are not interest.

Well, I'm already working towards it ;-) Still a long way to go,
though to fully replace them with generic code...

> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>

Thanks!
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