linux-kernel - Re: [PATCH 1/4] forget_original_parent: split out the un-ptrace part

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Message-ID: <20090223182638.GA22806@redhat.com>
Date:	Mon, 23 Feb 2009 19:26:38 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Roland McGrath <roland@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Metzger, Markus T" <markus.t.metzger@...el.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] forget_original_parent: split out the un-ptrace
	part

On 02/23, Oleg Nesterov wrote:
>
> If we are going to optimize out tasklist in forget_original_parent(), then
> I'd prefer http://marc.info/?l=linux-kernel&m=123438710725342
>
> But this needs a fat comment. And I didn't think carefully about this code.

No, this won't work.

When ->child_reaper exits, it must take tasklist and call find_new_reaper()
even if it has no children.

Oleg.

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