linux-kernel - Re: [PATCH 06/16] signal: fix premature completion of group stop when interfered by ptrace

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Message-ID: <20101220150018.GD11583@redhat.com>
Date:	Mon, 20 Dec 2010 16:00:18 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	roland@...hat.com, linux-kernel@...r.kernel.org,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	rjw@...k.pl, jan.kratochvil@...hat.com
Subject: Re: [PATCH 06/16] signal: fix premature completion of group stop
	when interfered by ptrace

On 12/06, Tejun Heo wrote:
>
> +static bool task_participate_group_stop(struct task_struct *task)
> +{
> +	struct signal_struct *sig = task->signal;
> +	bool consume = task->group_stop & GROUP_STOP_CONSUME;
> +
> +	task_clear_group_stop(task);
> +
> +	if (!consume)
> +		return false;
> +
> +	task->group_stop &= ~GROUP_STOP_CONSUME;

Minor nit, GROUP_STOP_CONSUME was already cleared by task_clear_group_stop().

Oleg.

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