linux-kernel - Re: [PATCH 7/8] job control: Notify the real parent of job control events regardless of ptrace

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Message-ID: <20110323092455.GZ12003@htj.dyndns.org>
Date:	Wed, 23 Mar 2011 10:24:55 +0100
From:	Tejun Heo <tj@...nel.org>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	roland@...hat.com, jan.kratochvil@...hat.com,
	vda.linux@...glemail.com, linux-kernel@...r.kernel.org,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	indan@....nu
Subject: Re: [PATCH 7/8] job control: Notify the real parent of job control
 events regardless of ptrace

On Wed, Mar 23, 2011 at 10:17:36AM +0100, Tejun Heo wrote:
> Hey, Oleg.
> 
> On Tue, Mar 22, 2011 at 08:44:16PM +0100, Oleg Nesterov wrote:
> > On 03/22, Tejun Heo wrote:
> > >
> > > On Mon, Mar 21, 2011 at 06:43:06PM +0100, Oleg Nesterov wrote:
> > > > Hmm... in fact I can't convince myself we really need to look at
> > > > child->group_leader, will recheck... Anyway, this is minor too.
> > >
> > > Care to elaborate?
> > 
> > child->real_parent must be equal to child->group_leader->real_parent.
> 
> Okay.

Ooh, on a related note, we probably want to change
do_notify_parent_cldstop() too.  tsk->group_leader->real_parent is
used as the delivery target when !@..._ptracer.  This is the same with
tsk->real_parent and the code has been like this for a long time but
is a bit confusing.

Thanks.

-- 
tejun
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