[PATCH pm-freezer 4/4] freezer: use lock_task_sighand() in fake_signal_wake_up()
Oleg Nesterov
oleg at redhat.com
Mon Aug 29 09:36:47 PDT 2011
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.
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