linux-kernel - Re: [RFC] fs, proc: Introduce /proc/<pid>/task/<tid>/children entry v6

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Message-ID: <20120117183004.GK16213@moon>
Date:	Tue, 17 Jan 2012 22:30:04 +0400
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pavel Emelyanov <xemul@...allels.com>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Tejun Heo <tj@...nel.org>, Andrew Vagin <avagin@...nvz.org>,
	Vasiliy Kulikov <segoon@...nwall.com>
Subject: Re: [RFC] fs, proc: Introduce /proc/<pid>/task/<tid>/children entry
 v6

On Tue, Jan 17, 2012 at 07:14:36PM +0100, Oleg Nesterov wrote:
...
> > > Do you see another approach? I don't, so I'd suggest to check
> > > "task->exit_state != EXIT_DEAD" instead of !list_empty().
> > >
> >
> > Well, I thought what if I can find another way without EXIT_DEAD
> > but seems there is no luck.
> 
> Oooooh. Cyrill, it seems I managed to confuse you. And myself.
> 
> exit_ptrace() doesn't use ->sibling, it uses ->ptrace_entry!.
> 
> Sorry!
> 

Heh ;) No worries, I seem to not understand this code enough anyway,
so I'll re-check it again and post an updated version of the patch which
should be reviewed with great caution.

	Cyrill
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