From: David Rientjes <rientjes@google.com>
To: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@suse.cz>,
Johannes Weiner <hannes@cmpxchg.org>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Minchan Kim <minchan@kernel.org>, Oleg Nesterov <oleg@redhat.com>,
linux-mm@kvack.org, cgroups@vger.kernel.org
Subject: Re: [rfc][patch 3/3] mm, memcg: introduce own oom handler to iterate only over its own threads
Date: Fri, 29 Jun 2012 13:30:33 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1206291329520.6040@chino.kir.corp.google.com> (raw)
In-Reply-To: <4FEC1C06.70802@jp.fujitsu.com>
On Thu, 28 Jun 2012, Kamezawa Hiroyuki wrote:
> > It turns out that task->children is not an rcu-protected list so this
> > doesn't work.
>
> Can't we use sighand->lock to iterate children ?
>
I don't think so, this list is protected by tasklist_lock. Oleg?
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WARNING: multiple messages have this Message-ID (diff)
From: David Rientjes <rientjes-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
To: Kamezawa Hiroyuki
<kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
Cc: Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org>,
Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
KOSAKI Motohiro
<kosaki.motohiro-+CUm20s59erQFUHtdCDX3A@public.gmane.org>,
Minchan Kim <minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Oleg Nesterov <oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [rfc][patch 3/3] mm, memcg: introduce own oom handler to iterate only over its own threads
Date: Fri, 29 Jun 2012 13:30:33 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1206291329520.6040@chino.kir.corp.google.com> (raw)
In-Reply-To: <4FEC1C06.70802-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
On Thu, 28 Jun 2012, Kamezawa Hiroyuki wrote:
> > It turns out that task->children is not an rcu-protected list so this
> > doesn't work.
>
> Can't we use sighand->lock to iterate children ?
>
I don't think so, this list is protected by tasklist_lock. Oleg?
next prev parent reply other threads:[~2012-06-29 20:30 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-26 1:47 [patch 1/3] mm, oom: move declaration for mem_cgroup_out_of_memory to oom.h David Rientjes
2012-06-26 1:47 ` David Rientjes
2012-06-26 1:47 ` [rfc][patch 2/3] mm, oom: introduce helper function to process threads during scan David Rientjes
2012-06-26 1:47 ` David Rientjes
2012-06-26 3:22 ` Kamezawa Hiroyuki
2012-06-26 3:22 ` Kamezawa Hiroyuki
2012-06-26 6:05 ` KOSAKI Motohiro
2012-06-26 8:48 ` Michal Hocko
2012-06-26 8:48 ` Michal Hocko
2012-06-26 1:47 ` [rfc][patch 3/3] mm, memcg: introduce own oom handler to iterate only over its own threads David Rientjes
2012-06-26 1:47 ` David Rientjes
2012-06-26 5:32 ` Kamezawa Hiroyuki
2012-06-26 5:32 ` Kamezawa Hiroyuki
2012-06-26 20:38 ` David Rientjes
2012-06-27 5:35 ` David Rientjes
2012-06-27 5:35 ` David Rientjes
2012-06-28 1:43 ` David Rientjes
2012-06-28 1:43 ` David Rientjes
2012-06-28 17:16 ` Oleg Nesterov
2012-06-29 20:37 ` David Rientjes
2012-06-28 8:55 ` Kamezawa Hiroyuki
2012-06-28 8:55 ` Kamezawa Hiroyuki
2012-06-29 20:30 ` David Rientjes [this message]
2012-06-29 20:30 ` David Rientjes
2012-07-03 17:56 ` Oleg Nesterov
2012-06-28 8:52 ` Kamezawa Hiroyuki
2012-06-26 9:58 ` Michal Hocko
2012-06-26 9:58 ` Michal Hocko
2012-06-26 3:12 ` [patch 1/3] mm, oom: move declaration for mem_cgroup_out_of_memory to oom.h Kamezawa Hiroyuki
2012-06-26 6:04 ` KOSAKI Motohiro
2012-06-26 6:04 ` KOSAKI Motohiro
2012-06-26 8:34 ` Michal Hocko
2012-06-26 8:34 ` Michal Hocko
2012-06-29 21:06 ` [patch 1/5] " David Rientjes
2012-06-29 21:06 ` [patch 2/5] mm, oom: introduce helper function to process threads during scan David Rientjes
2012-06-29 21:06 ` David Rientjes
2012-07-12 7:18 ` Sha Zhengju
2012-07-12 7:18 ` Sha Zhengju
2012-06-29 21:06 ` [patch 3/5] mm, memcg: introduce own oom handler to iterate only over its own threads David Rientjes
2012-06-29 21:06 ` David Rientjes
2012-07-10 21:19 ` Andrew Morton
2012-07-10 21:19 ` Andrew Morton
2012-07-10 23:24 ` David Rientjes
2012-07-12 14:50 ` Sha Zhengju
2012-07-12 14:50 ` Sha Zhengju
2012-06-29 21:06 ` [patch 4/5] mm, oom: reduce dependency on tasklist_lock David Rientjes
2012-07-03 18:17 ` Oleg Nesterov
2012-07-03 18:17 ` Oleg Nesterov
2012-07-10 21:04 ` David Rientjes
2012-07-13 14:32 ` Michal Hocko
2012-07-13 14:32 ` Michal Hocko
2012-07-16 7:42 ` [PATCH mmotm] mm, oom: reduce dependency on tasklist_lock: fix Hugh Dickins
2012-07-16 7:42 ` Hugh Dickins
2012-07-16 8:06 ` Michal Hocko
2012-07-16 8:06 ` Michal Hocko
2012-07-16 9:01 ` Hugh Dickins
2012-07-16 9:27 ` Michal Hocko
2012-07-19 10:11 ` Kamezawa Hiroyuki
2012-07-19 10:11 ` Kamezawa Hiroyuki
2012-06-29 21:07 ` [patch 5/5] mm, memcg: move all oom handling to memcontrol.c David Rientjes
2012-06-29 21:07 ` David Rientjes
2012-07-04 5:51 ` Kamezawa Hiroyuki
2012-07-04 5:51 ` Kamezawa Hiroyuki
2012-07-13 14:34 ` Michal Hocko
2012-07-10 21:05 ` [patch 1/5] mm, oom: move declaration for mem_cgroup_out_of_memory to oom.h David Rientjes
2012-07-10 21:05 ` David Rientjes
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