From: Oleg Nesterov <oleg@redhat.com>
To: Tejun Heo <tj@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
Paul Menage <paul@paulmenage.org>,
containers@lists.linux-foundation.org,
linux-pm@lists.linux-foundation.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH pm-freezer 4/4] freezer: use lock_task_sighand() in fake_signal_wake_up()
Date: Mon, 29 Aug 2011 18:36:47 +0200 [thread overview]
Message-ID: <20110829163647.GC9973@redhat.com> (raw)
In-Reply-To: <20110829140621.GE18871@mtj.dyndns.org>
On 08/29, Tejun Heo wrote:
>
> --- work.orig/kernel/freezer.c
> +++ work/kernel/freezer.c
> @@ -103,9 +103,10 @@ static void fake_signal_wake_up(struct t
> {
> unsigned long flags;
>
> - spin_lock_irqsave(&p->sighand->siglock, flags);
> - signal_wake_up(p, 0);
> - spin_unlock_irqrestore(&p->sighand->siglock, flags);
> + if (lock_task_sighand(p, &flags)) {
> + signal_wake_up(p, 0);
> + unlock_task_sighand(p, &flags);
> + }
Yes, this looks correct.
Oleg.
next prev parent reply other threads:[~2011-08-29 16:40 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-29 14:04 [PATCH pm-freezer 1/4] cgroup_freezer: fix freezer->state setting bug in freezer_change_state() Tejun Heo
2011-08-29 14:05 ` [PATCH pm-freezer 2/4] freezer: set PF_NOFREEZE on a dying task right before TASK_DEAD Tejun Heo
2011-08-29 14:05 ` Tejun Heo
2011-08-29 14:05 ` [PATCH pm-freezer 3/4] freezer: check freezing() before leaving FROZEN state Tejun Heo
2011-08-29 14:05 ` Tejun Heo
2011-08-29 14:06 ` [PATCH pm-freezer 4/4] freezer: use lock_task_sighand() in fake_signal_wake_up() Tejun Heo
[not found] ` <20110829140621.GE18871-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2011-08-29 16:36 ` Oleg Nesterov
2011-08-29 16:36 ` Oleg Nesterov
2011-08-29 16:36 ` Oleg Nesterov [this message]
[not found] ` <20110829140549.GD18871-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2011-08-29 14:06 ` Tejun Heo
2011-08-29 16:35 ` [PATCH pm-freezer 3/4] freezer: check freezing() before leaving FROZEN state Oleg Nesterov
2011-08-29 14:06 ` [PATCH pm-freezer 4/4] freezer: use lock_task_sighand() in fake_signal_wake_up() Tejun Heo
2011-08-29 16:35 ` [PATCH pm-freezer 3/4] freezer: check freezing() before leaving FROZEN state Oleg Nesterov
2011-08-29 17:12 ` Oleg Nesterov
2011-08-29 17:12 ` Oleg Nesterov
2011-08-29 17:21 ` Oleg Nesterov
2011-08-29 17:21 ` Oleg Nesterov
[not found] ` <20110829171228.GA11339-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2011-08-29 17:21 ` Oleg Nesterov
[not found] ` <20110829163533.GB9973-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2011-08-29 17:12 ` Oleg Nesterov
2011-08-29 16:35 ` Oleg Nesterov
[not found] ` <20110829140509.GC18871-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2011-08-29 14:05 ` Tejun Heo
2011-08-29 18:02 ` [PATCH pm-freezer 2/4] freezer: set PF_NOFREEZE on a dying task right before TASK_DEAD Oleg Nesterov
2011-08-29 18:02 ` Oleg Nesterov
2011-08-29 18:02 ` Oleg Nesterov
[not found] ` <20110829140418.GB18871-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2011-08-29 14:05 ` Tejun Heo
2011-08-29 16:00 ` [PATCH pm-freezer 1/4] cgroup_freezer: fix freezer->state setting bug in freezer_change_state() Oleg Nesterov
2011-08-29 16:00 ` Oleg Nesterov
2011-08-29 16:00 ` Oleg Nesterov
-- strict thread matches above, loose matches on Subject: below --
2011-08-31 10:21 Tejun Heo
2011-08-31 10:21 ` [PATCH pm-freezer 2/4] freezer: set PF_NOFREEZE on a dying task right before TASK_DEAD " Tejun Heo
2011-08-31 10:22 ` [PATCH pm-freezer 3/4] freezer: restructure __refrigerator() Tejun Heo
2011-08-31 10:22 ` [PATCH pm-freezer 4/4] freezer: use lock_task_sighand() in fake_signal_wake_up() Tejun Heo
2011-08-31 10:22 ` Tejun Heo
[not found] ` <20110831102210.GC2828-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2011-08-31 10:22 ` Tejun Heo
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