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From: Roland McGrath <roland@redhat.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Ingo Molnar <mingo@elte.hu>, Petr Vandrovec <vandrove@vc.cvut.cz>,
	Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Andrew Morton <akpm@zip.com.au>
Subject: Re: [patch] Re: Problem with exiting threads under NPTL
Date: Mon, 15 Dec 2003 15:06:53 -0800	[thread overview]
Message-ID: <200312152306.hBFN6riq024958@magilla.sf.frob.com> (raw)
In-Reply-To: Linus Torvalds's message of  Sunday, 14 December 2003 12:38:15 -0800 <Pine.LNX.4.58.0312141228170.1478@home.osdl.org>

> Or is that case impossible to trigger? Looks a bit like that. But if it
> _is_ impossible to trigger (ie exit_signal cannot be -1 for a thread
> leader), then why does the current code test for "&& leader->exit_signal
> != -1)" at all?

I think that most of the logic testing exit_signal was written when
CLONE_DETACHED could be used independent of CLONE_THREAD.  We concluded
that was unworkable due to some related races and changed clone so that the
situation of a (live) thread group leader with exit_signal == -1 is now
impossible.

      parent reply	other threads:[~2003-12-15 23:07 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-12-14  5:25 Petr Vandrovec
2003-12-14 15:02 ` Martin Schlemmer
2003-12-14 19:38 ` [patch] " Ingo Molnar
2003-12-14 20:38   ` Linus Torvalds
2003-12-14 20:45     ` Linus Torvalds
2003-12-14 21:02       ` Ingo Molnar
2003-12-15 15:04       ` Jörn Engel
2003-12-14 21:06     ` Ingo Molnar
2003-12-14 22:10       ` Linus Torvalds
2003-12-14 22:17         ` Ingo Molnar
2003-12-14 22:32           ` Linus Torvalds
2003-12-15 23:04             ` Roland McGrath
2003-12-14 22:28         ` Ingo Molnar
2003-12-14 22:45           ` Linus Torvalds
2003-12-14 23:08             ` Ingo Molnar
2003-12-15  6:31               ` dan carpenter
2003-12-15 11:43                 ` Ingo Molnar
2003-12-15 13:07                   ` dan carpenter
2003-12-15 15:11                 ` Linus Torvalds
2003-12-15 23:15               ` Roland McGrath
2003-12-15  8:54         ` Arjan van de Ven
2003-12-15 22:55           ` Roland McGrath
2003-12-15 23:06     ` Roland McGrath [this message]

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