From: Johannes Weiner <hannes@cmpxchg.org>
To: Michal Hocko <mhocko@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>,
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 3/6] arch: mm: pass userspace fault flag to generic fault handler
Date: Fri, 26 Jul 2013 14:45:00 -0400 [thread overview]
Message-ID: <20130726184500.GQ715@cmpxchg.org> (raw)
In-Reply-To: <20130726131947.GE17761@dhcp22.suse.cz>
On Fri, Jul 26, 2013 at 03:19:47PM +0200, Michal Hocko wrote:
> On Thu 25-07-13 18:25:35, Johannes Weiner wrote:
> > Unlike global OOM handling, memory cgroup code will invoke the OOM
> > killer in any OOM situation because it has no way of telling faults
> > occuring in kernel context - which could be handled more gracefully -
> > from user-triggered faults.
> >
> > Pass a flag that identifies faults originating in user space from the
> > architecture-specific fault handlers to generic code so that memcg OOM
> > handling can be improved.
> >
> > Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
>
> Looks good to me but I guess maintainers of the affected archs should be
> CCed
linux-arch is on CC, that should do the trick :)
> Reviewed-by: Michal Hocko <mhocko@suse.cz>
Thanks!
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next prev parent reply other threads:[~2013-07-26 18:45 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
2013-07-29 18:58 ` KOSAKI Motohiro
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
2013-07-26 13:19 ` Michal Hocko
2013-07-26 18:45 ` Johannes Weiner [this message]
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
2013-07-26 14:16 ` Michal Hocko
2013-07-26 18:54 ` Johannes Weiner
2013-07-29 19:18 ` KOSAKI Motohiro
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
2013-07-26 14:43 ` Michal Hocko
2013-07-26 21:28 ` Johannes Weiner
2013-07-29 14:12 ` Michal Hocko
2013-07-29 14:55 ` Johannes Weiner
2013-07-29 15:52 ` Michal Hocko
2013-07-30 14:09 ` Michal Hocko
2013-07-30 14:32 ` Johannes Weiner
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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