From: Frederic Weisbecker <fweisbec@gmail.com>
To: Tejun Heo <tj@kernel.org>
Cc: akpm@linux-foundation.org, containers@lists.linux-foundation.org,
lizf@cn.fujitsu.com, linux-kernel@vger.kernel.org,
oleg@redhat.com, linux-pm@lists.linux-foundation.org,
paul@paulmenage.org, kamezawa.hiroyu@Jp.fujitsu.com
Subject: Re: [PATCH 04/10] cgroup: always lock threadgroup during migration
Date: Mon, 14 Nov 2011 19:52:43 +0100 [thread overview]
Message-ID: <20111114185242.GF9446@somewhere> (raw)
In-Reply-To: <20111114184630.GE9446@somewhere>
On Mon, Nov 14, 2011 at 07:46:34PM +0100, Frederic Weisbecker wrote:
> I have the feeling the task_lock is now useless given that we are synchronized
> against cgroup_exit() with the threadgroup_lock.
>
> It's probably also useless in cgroup_exit(). But that's something for a further
> patch...
>
> Thanks.
Oops, I missed what Kamezawa said and your answer, sorry.
next prev parent reply other threads:[~2011-11-14 18:52 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1320191193-8110-1-git-send-email-tj@kernel.org>
2011-11-01 23:46 ` [PATCH 01/10] cgroup: add cgroup_root_mutex Tejun Heo
2011-11-04 8:38 ` KAMEZAWA Hiroyuki
2011-11-01 23:46 ` [PATCH 02/10] threadgroup: rename signal->threadgroup_fork_lock to ->group_rwsem Tejun Heo
2011-11-01 23:46 ` [PATCH 03/10] threadgroup: extend threadgroup_lock() to cover exit and exec Tejun Heo
2011-11-01 23:46 ` [PATCH 04/10] cgroup: always lock threadgroup during migration Tejun Heo
2011-11-04 8:54 ` KAMEZAWA Hiroyuki
[not found] ` <20111104175413.30afaf8e.kamezawa.hiroyu@jp.fujitsu.com>
2011-11-04 15:21 ` Tejun Heo
2011-11-14 18:46 ` Frederic Weisbecker
[not found] ` <20111114184630.GE9446@somewhere>
2011-11-14 18:52 ` Frederic Weisbecker [this message]
2011-11-21 22:05 ` Tejun Heo
2011-11-01 23:46 ` [PATCH 05/10] cgroup: subsys->attach_task() should be called after migration Tejun Heo
2011-11-01 23:46 ` [PATCH 06/10] cgroup: improve old cgroup handling in cgroup_attach_proc() Tejun Heo
2011-11-01 23:46 ` [PATCH 07/10] cgroup: introduce cgroup_taskset and use it in subsys->can_attach(), cancel_attach() and attach() Tejun Heo
2011-11-01 23:46 ` [PATCH 08/10] cgroup: don't use subsys->can_attach_task() or ->attach_task() Tejun Heo
2011-11-04 9:08 ` KAMEZAWA Hiroyuki
2011-11-14 23:54 ` Frederic Weisbecker
2011-11-01 23:46 ` [PATCH 09/10] cgroup, cpuset: don't use ss->pre_attach() Tejun Heo
2011-11-01 23:46 ` [PATCH 10/10] cgroup: kill subsys->can_attach_task(), pre_attach() and attach_task() Tejun Heo
[not found] ` <1320191193-8110-3-git-send-email-tj@kernel.org>
2011-11-04 8:40 ` [PATCH 02/10] threadgroup: rename signal->threadgroup_fork_lock to ->group_rwsem KAMEZAWA Hiroyuki
[not found] ` <20111104174032.e0c4fc11.kamezawa.hiroyu@jp.fujitsu.com>
2011-11-04 15:16 ` Tejun Heo
[not found] ` <1320191193-8110-4-git-send-email-tj@kernel.org>
2011-11-04 8:45 ` [PATCH 03/10] threadgroup: extend threadgroup_lock() to cover exit and exec KAMEZAWA Hiroyuki
2011-11-13 16:44 ` Frederic Weisbecker
2011-11-13 18:20 ` Frederic Weisbecker
[not found] ` <20111113164426.GB9446@somewhere>
2011-11-14 13:54 ` Frederic Weisbecker
2011-11-21 21:58 ` Tejun Heo
[not found] ` <20111114135404.GD9446@somewhere>
2011-11-21 22:03 ` Tejun Heo
[not found] ` <20111121220326.GM25776@google.com>
2011-11-23 14:34 ` Frederic Weisbecker
[not found] ` <20111121215839.GL25776@google.com>
2011-11-23 14:02 ` Frederic Weisbecker
[not found] ` <20111123140139.GB10669@somewhere.redhat.com>
2011-11-24 21:22 ` Tejun Heo
2011-11-24 22:50 ` [PATCH UPDATED " Tejun Heo
2011-11-25 4:02 ` Linus Torvalds
2011-11-27 19:21 ` Tejun Heo
[not found] ` <20111127192155.GB4266@google.com>
2011-11-27 21:25 ` Tejun Heo
[not found] ` <20111127212558.GE4266@google.com>
2011-12-01 19:29 ` Tejun Heo
2011-11-25 14:01 ` Frederic Weisbecker
2011-11-27 19:30 ` Tejun Heo
[not found] ` <20111127193001.GC4266@google.com>
2011-12-02 16:28 ` Frederic Weisbecker
2011-12-05 18:43 ` Tejun Heo
[not found] ` <20111205184315.GJ627@google.com>
2011-12-07 15:30 ` Frederic Weisbecker
2011-12-07 18:22 ` Tejun Heo
2011-12-08 20:50 ` [PATCH UPDATED AGAIN " Tejun Heo
2011-12-09 23:42 ` Frederic Weisbecker
[not found] ` <20111209234246.GC27173@somewhere>
2011-12-13 1:33 ` Tejun Heo
[not found] ` <20111213013334.GC25802@google.com>
2011-12-13 2:17 ` Tejun Heo
[not found] ` <1320191193-8110-6-git-send-email-tj@kernel.org>
2011-11-14 20:06 ` [PATCH 05/10] cgroup: subsys->attach_task() should be called after migration Frederic Weisbecker
2011-11-21 22:04 ` Tejun Heo
[not found] ` <1320191193-8110-7-git-send-email-tj@kernel.org>
2011-11-14 20:37 ` [PATCH 06/10] cgroup: improve old cgroup handling in cgroup_attach_proc() Frederic Weisbecker
[not found] ` <1320191193-8110-8-git-send-email-tj@kernel.org>
2011-11-14 21:16 ` [PATCH 07/10] cgroup: introduce cgroup_taskset and use it in subsys->can_attach(), cancel_attach() and attach() Frederic Weisbecker
[not found] ` <1320191193-8110-10-git-send-email-tj@kernel.org>
2011-11-15 0:51 ` [PATCH 09/10] cgroup, cpuset: don't use ss->pre_attach() Frederic Weisbecker
[not found] ` <1320191193-8110-11-git-send-email-tj@kernel.org>
2011-11-04 9:10 ` [PATCH 10/10] cgroup: kill subsys->can_attach_task(), pre_attach() and attach_task() KAMEZAWA Hiroyuki
2011-11-15 0:54 ` Frederic Weisbecker
2011-11-21 22:07 ` [PATCHSET] cgroup: stable threadgroup during attach & subsys methods consolidation Tejun Heo
[not found] ` <20111121220719.GP25776@google.com>
2011-11-22 2:27 ` Li Zefan
[not found] ` <4ECB089C.3080208@cn.fujitsu.com>
2011-11-22 16:20 ` Tejun Heo
2011-11-24 22:51 ` Tejun Heo
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