From: KOSAKI Motohiro <kosaki.motohiro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
Cc: Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org>,
David Rientjes <rientjes-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
KAMEZAWA Hiroyuki
<kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>,
azurIt <azurit-Rm0zKEqwvD4@public.gmane.org>,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
kosaki.motohiro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Subject: Re: [patch 2/6] arch: mm: do not invoke OOM killer on kernel fault OOM
Date: Mon, 29 Jul 2013 14:58:05 -0400 [thread overview]
Message-ID: <51F6BB3D.6000700@gmail.com> (raw)
In-Reply-To: <1374791138-15665-3-git-send-email-hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
(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-druUgvl0LCNAfugRpC6u6w@public.gmane.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.
Acked-by: KOSAKI Motohiro <kosaki.motohiro-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
next prev parent reply other threads:[~2013-07-29 18:58 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-25 22:25 [patch 0/6] improve memcg oom killer robustness Johannes Weiner
2013-07-25 22:25 ` [patch 1/6] arch: mm: remove obsolete init OOM protection Johannes Weiner
2013-07-26 13:00 ` Michal Hocko
2013-07-29 18:55 ` KOSAKI Motohiro
2013-07-25 22:25 ` [patch 2/6] arch: mm: do not invoke OOM killer on kernel fault OOM Johannes Weiner
2013-07-26 13:07 ` Michal Hocko
[not found] ` <1374791138-15665-3-git-send-email-hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2013-07-29 18:58 ` KOSAKI Motohiro [this message]
2013-08-01 21:59 ` Johannes Weiner
2013-07-25 22:25 ` [patch 3/6] arch: mm: pass userspace fault flag to generic fault handler Johannes Weiner
[not found] ` <1374791138-15665-4-git-send-email-hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2013-07-26 13:19 ` Michal Hocko
2013-07-26 18:45 ` Johannes Weiner
2013-07-25 22:25 ` [patch 4/6] x86: finish user fault error path with fatal signal Johannes Weiner
2013-07-26 13:52 ` Michal Hocko
2013-07-26 18:46 ` Johannes Weiner
2013-07-29 12:45 ` Michal Hocko
2013-07-29 19:01 ` KOSAKI Motohiro
2013-07-25 22:25 ` [patch 5/6] mm: memcg: enable memcg OOM killer only for user faults Johannes Weiner
[not found] ` <1374791138-15665-6-git-send-email-hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2013-07-26 14:16 ` Michal Hocko
2013-07-26 18:54 ` Johannes Weiner
2013-07-29 19:18 ` KOSAKI Motohiro
[not found] ` <51F6C00C.5050702-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-07-29 19:44 ` Johannes Weiner
2013-07-29 19:47 ` KOSAKI Motohiro
2013-07-25 22:25 ` [patch 6/6] mm: memcg: do not trap chargers with full callstack on OOM Johannes Weiner
[not found] ` <1374791138-15665-7-git-send-email-hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2013-07-26 14:43 ` Michal Hocko
2013-07-26 21:28 ` Johannes Weiner
2013-07-29 14:12 ` Michal Hocko
[not found] ` <20130729141250.GF4678-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2013-07-29 14:55 ` Johannes Weiner
[not found] ` <20130729145529.GW715-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2013-07-29 15:52 ` Michal Hocko
[not found] ` <20130726212808.GD17975-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2013-07-30 14:09 ` Michal Hocko
[not found] ` <20130730140913.GC15847-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2013-07-30 14:32 ` Johannes Weiner
[not found] ` <20130730143228.GD715-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2013-07-30 14:56 ` Michal Hocko
2013-07-25 22:31 ` [patch 3.2] memcg OOM robustness (x86 only) Johannes Weiner
2013-08-03 8:38 ` azurIt
2013-08-03 16:30 ` Johannes Weiner
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