linux-kernel - Re: [PATCH 16/16] ptrace: remove the extra wake_up_process() from ptrace

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Date:	Tue, 21 Dec 2010 18:54:39 +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 16/16] ptrace: remove the extra wake_up_process() from
	ptrace_detach()

On 12/06, Tejun Heo wrote:
>
> --- a/kernel/ptrace.c
> +++ b/kernel/ptrace.c
> @@ -391,8 +391,6 @@ int ptrace_detach(struct task_struct *child, unsigned int data)
>  	if (child->ptrace) {
>  		child->exit_code = data;
>  		dead = __ptrace_detach(current, child);
> -		if (!child->exit_state)
> -			wake_up_process(child);

I can only repeat that I obviously like this change ;)

Now that Jan and Roland do not object, perhaps it can be sent as 2/X.
This is bugfix, after all (like the first patch).

Oleg.

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