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From: Tejun Heo <htejun@gmail.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: rjw@sisk.pl, paul@paulmenage.org, lizf@cn.fujitsu.com,
	linux-pm@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org,
	containers@lists.linux-foundation.org, fweisbec@gmail.com,
	matthltc@us.ibm.com, akpm@linux-foundation.org,
	Paul Menage <menage@google.com>
Subject: Re: [PATCH 1/4] cgroup: change locking order in attach_task_by_pid()
Date: Mon, 10 Oct 2011 10:43:27 -0700	[thread overview]
Message-ID: <20111010174327.GH8100@google.com> (raw)
In-Reply-To: <20111010173426.GG8100@google.com>

On Mon, Oct 10, 2011 at 10:34:26AM -0700, Tejun Heo wrote:
> > And, this means we can't change cpuset_do_move_task() to do
> > threadgroup_lock().
> 
> Would that be problematic?

Ooh, looking through other users of cgroup_attach_task().  Yeah, some
of them can be problematic.  I'll write more in another reply.

Thanks.

-- 
tejun

  reply	other threads:[~2011-10-10 17:43 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-04 18:01 [PATCHSET cgroup] extend threadgroup locking Tejun Heo
2011-09-04 18:01 ` [PATCH 1/4] cgroup: change locking order in attach_task_by_pid() Tejun Heo
2011-09-18 18:56   ` Oleg Nesterov
2011-10-10 17:34     ` Tejun Heo
2011-10-10 17:43       ` Tejun Heo [this message]
2011-09-04 18:01 ` Tejun Heo
2011-09-04 18:01 ` [PATCH 2/4] threadgroup: rename signal->threadgroup_fork_lock to ->group_rwsem Tejun Heo
2011-09-04 18:01 ` Tejun Heo
2011-09-04 18:01 ` [PATCH 3/4] threadgroup: extend threadgroup_lock() to cover exit and exec Tejun Heo
2011-09-04 18:01 ` Tejun Heo
2011-09-12  4:04   ` Paul Menage
2011-09-13  7:54     ` Tejun Heo
2011-09-18 17:37   ` Oleg Nesterov
2011-09-18 18:46     ` Oleg Nesterov
2011-10-08 18:37     ` Ben Blum
2011-10-10 17:11     ` Tejun Heo
2011-10-12 17:51       ` Oleg Nesterov
2011-10-12 18:05         ` Ben Blum
2011-10-12 18:29           ` Oleg Nesterov
2011-10-12 18:44             ` Ben Blum
2011-10-12 19:07               ` Oleg Nesterov
2011-09-04 18:01 ` [PATCH 4/4] cgroup: always lock threadgroup during migration Tejun Heo
2011-09-18 17:41   ` Oleg Nesterov
2011-10-10 17:31     ` Tejun Heo
2011-09-04 18:01 ` Tejun Heo
2011-09-05  4:05 ` [PATCHSET cgroup] extend threadgroup locking Rafael J. Wysocki
2011-09-05  4:05 ` Rafael J. Wysocki
2011-09-05  8:43   ` Tejun Heo
     [not found]   ` <201109050605.57360.rjw-KKrjLPT3xs0@public.gmane.org>
2011-09-05  8:43     ` Tejun Heo
2011-09-05  8:43   ` Tejun Heo
2011-09-06  9:00 ` Li Zefan
     [not found] ` <1315159280-25032-1-git-send-email-htejun-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2011-09-04 18:01   ` [PATCH 1/4] cgroup: change locking order in attach_task_by_pid() Tejun Heo
2011-09-04 18:01   ` [PATCH 2/4] threadgroup: rename signal->threadgroup_fork_lock to ->group_rwsem Tejun Heo
2011-09-04 18:01   ` [PATCH 3/4] threadgroup: extend threadgroup_lock() to cover exit and exec Tejun Heo
2011-09-04 18:01   ` [PATCH 4/4] cgroup: always lock threadgroup during migration Tejun Heo
2011-09-05  4:05   ` [PATCHSET cgroup] extend threadgroup locking Rafael J. Wysocki
2011-09-06  9:00   ` Li Zefan
2011-09-11  3:35   ` Tejun Heo
2011-09-06  9:00 ` Li Zefan
2011-09-11  3:35 ` Tejun Heo
2011-09-14 18:33   ` Oleg Nesterov
2011-09-14 23:33     ` Tejun Heo
2011-09-11  3:35 ` Tejun Heo
2011-09-12  4:11 ` Paul Menage

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