linux-kernel - Re: [PATCH 1/2] copy_process: fix CLONE_PARENT && ->exit

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Date:	Thu, 26 Feb 2009 14:43:01 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Oleg Nesterov <oleg@...hat.com>
cc:	Roland McGrath <roland@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Chris Evans <scarybeasts@...il.com>,
	David Howells <dhowells@...hat.com>,
	Don Howard <dhoward@...hat.com>,
	Eugene Teo <eugene@...hat.com>,
	Michael Kerrisk <mtk.manpages@...glemail.com>,
	Tavis Ormandy <taviso@....lonestar.org>,
	Vitaly Mayatskikh <vmayatsk@...hat.com>, stable@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] copy_process: fix CLONE_PARENT && ->exit_signal
 interaction



On Thu, 26 Feb 2009, Oleg Nesterov wrote:
> 
> But I can not understand that reason... As I said, the thread does not
> go away if exit_signal == 0. Yes, the parent does not see it has a new
> zombie, but why this is useful?

Well, I know that people actually do this, because I found it in google 
code search. Maybe it was just a test program or something. So I didn't 
really care about "useful vs not", because I only care about "is it done 
vs not".

People do tons of useless things. That's the only way to explain Dr Phil. 

		Linus
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