From: Roland McGrath <roland@redhat.com>
To: ebiederm@xmission.com (Eric W. Biederman)
Cc: Oleg Nesterov <oleg@tv-sign.ru>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>, Robin Holt <holt@sgi.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Chris Snook <csnook@redhat.com>,
linux-kernel@vger.kernel.org,
Jack Steiner <steiner@americas.sgi.com>,
acahalan@gmail.com
Subject: Re: [PATCH] Only send pdeath_signal when getppid changes.
Date: Tue, 10 Apr 2007 10:48:51 -0700 (PDT) [thread overview]
Message-ID: <20070410174852.88661D82F8@pipsqueak.sf.frob.com> (raw)
In-Reply-To: Eric W. Biederman's message of Tuesday, 10 April 2007 11:41:20 -0600 <m1ejmsxh33.fsf@ebiederm.dsl.xmission.com>
> Does a parent death signal make most sense between separately written programs?
I don't think it does. It has always seemed an utterly cockamamy feature
to me, and I've never understood what actually motivated it.
> Does a parent death signal make most sense between processes that are part of
> a larger program.
That is the only way I can really see it being used. The only actual
example of use I know is what Albert Cahalan reported. To my mind, the
only semantics that matter for pdeath_signal are what previous uses
expected in the past and still need for compatibility. If we started with
a fresh rationale from the ground up on what the feature is good for, I am
rather skeptical it would pass muster to be added today.
Thanks,
Roland
next prev parent reply other threads:[~2007-04-10 17:49 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-05 19:51 init's children list is long and slows reaping children Robin Holt
2007-04-05 20:57 ` Linus Torvalds
2007-04-06 0:51 ` Chris Snook
2007-04-06 1:03 ` Chris Snook
2007-04-06 1:29 ` Linus Torvalds
2007-04-06 2:15 ` Eric W. Biederman
2007-04-06 10:43 ` Robin Holt
2007-04-06 15:38 ` Eric W. Biederman
2007-04-06 16:31 ` Oleg Nesterov
2007-04-06 17:32 ` Ingo Molnar
2007-04-06 17:39 ` Roland Dreier
2007-04-06 18:04 ` Eric W. Biederman
2007-04-06 18:30 ` Eric W. Biederman
2007-04-06 19:18 ` [patch] sched: get rid of p->children use in show_task() Ingo Molnar
2007-04-06 19:22 ` Ingo Molnar
2007-04-10 13:48 ` init's children list is long and slows reaping children Ingo Molnar
2007-04-10 13:38 ` Oleg Nesterov
2007-04-10 15:00 ` Eric W. Biederman
2007-04-10 15:16 ` [PATCH] Only send pdeath_signal when getppid changes Eric W. Biederman
2007-04-10 16:37 ` Oleg Nesterov
2007-04-10 17:41 ` Eric W. Biederman
2007-04-10 17:48 ` Roland McGrath [this message]
2007-04-11 3:17 ` Albert Cahalan
2007-04-10 14:51 ` init's children list is long and slows reaping children Eric W. Biederman
2007-04-10 15:06 ` Ingo Molnar
2007-04-10 15:22 ` Eric W. Biederman
2007-04-10 15:53 ` Ingo Molnar
2007-04-10 16:17 ` Eric W. Biederman
2007-04-11 6:20 ` [patch] uninline remove/add_parent() APIs Ingo Molnar
2007-04-11 7:00 ` Eric W. Biederman
2007-04-11 22:06 ` Andrew Morton
2007-04-12 10:45 ` Eric W. Biederman
2007-04-12 22:50 ` Roland McGrath
2007-04-10 16:44 ` init's children list is long and slows reaping children Oleg Nesterov
2007-04-11 19:55 ` Bill Davidsen
2007-04-11 20:17 ` Eric W. Biederman
2007-04-11 21:24 ` Bill Davidsen
2007-04-11 20:19 ` Oleg Nesterov
2007-04-06 18:02 ` Eric W. Biederman
2007-04-06 18:21 ` Davide Libenzi
2007-04-06 18:56 ` Eric W. Biederman
2007-04-06 19:16 ` Davide Libenzi
2007-04-06 19:19 ` Ingo Molnar
2007-04-06 21:29 ` Davide Libenzi
2007-04-06 21:51 ` Linus Torvalds
2007-04-06 22:31 ` Davide Libenzi
2007-04-06 22:46 ` Linus Torvalds
2007-04-06 22:59 ` Davide Libenzi
2007-04-09 8:28 ` Ingo Molnar
2007-04-09 18:09 ` Bill Davidsen
2007-04-09 19:28 ` Kyle Moffett
2007-04-09 19:51 ` Linus Torvalds
2007-04-09 20:03 ` Davide Libenzi
2007-04-10 15:12 ` Bill Davidsen
2007-04-10 19:17 ` Davide Libenzi
2007-04-09 20:00 ` Eric W. Biederman
2007-04-06 16:41 ` Robin Holt
2007-04-09 17:37 ` Chris Snook
2007-04-06 18:05 ` Christoph Hellwig
2007-04-06 19:39 ` Eric W. Biederman
2007-04-06 22:38 ` Jeff Garzik
2007-04-06 22:51 ` Linus Torvalds
2007-04-06 23:37 ` Jeff Garzik
2007-04-11 7:28 ` Nick Piggin
2007-04-10 0:23 ` Andrew Morton
2007-04-10 0:48 ` Eric W. Biederman
2007-04-10 1:15 ` Andrew Morton
2007-04-10 6:53 ` Jeff Garzik
2007-04-10 9:42 ` Robin Holt
2007-04-10 1:59 ` Dave Jones
2007-04-10 2:30 ` Andrew Morton
2007-04-10 2:46 ` Linus Torvalds
2007-04-10 7:07 ` Jeff Garzik
2007-04-10 22:20 ` Ingo Oeser
2007-04-10 5:07 ` Alexey Dobriyan
2007-04-10 5:21 ` Dave Jones
2007-04-10 6:09 ` Torsten Kaiser
2007-04-10 7:08 ` Jeff Garzik
2007-04-10 7:05 ` Jeff Garzik
2007-04-10 7:37 ` Andrew Morton
2007-04-10 8:33 ` Jeff Garzik
2007-04-10 8:41 ` Andrew Morton
2007-04-10 8:48 ` Jeff Garzik
2007-04-10 22:35 ` Ingo Oeser
2007-04-10 16:35 ` Matt Mackall
2007-04-10 7:44 ` Russell King
2007-04-10 8:16 ` Jeff Garzik
2007-04-10 8:59 ` Ingo Molnar
2007-04-10 9:33 ` Jeff Garzik
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