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

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Date:	Thu, 26 Feb 2009 14:12:33 -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:
> 
> Really, how CLONE_PARENT + exit_signal==0 can be useful?

Umm? For the reason I already stated?

> But because the current behaviour is just silly. Imho.

So? If there are people using it, you calling it silly is immaterial.

The fact is, it's an existing user space interface. We don't break them. 

> But of course, if this change can break the user-space applications, then
> it should not be applied.

That's the point. Nobody has shown that there aren't any users.

		Linus
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