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From: Roland McGrath <roland@redhat.com>
To: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Sripathi Kodi <sripathik@in.ibm.com>,
	Linus Torvalds <torvalds@osdl.org>, Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org, patrics@interia.pl,
	Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH 2.6.13.1] Patch for invisible threads
Date: Thu, 15 Sep 2005 00:29:06 -0700 (PDT)	[thread overview]
Message-ID: <20050915072906.A26D2180A18@magilla.sf.frob.com> (raw)
In-Reply-To: Al Viro's message of  Thursday, 15 September 2005 03:12:36 +0100 <20050915021236.GA25261@ZenIV.linux.org.uk>

> Among other things, it means that zombies keep pinning their root and cwd
> down, AFAICS.  Not Good(tm).

Good point.  The technique that looks for the first nonzombie in the group
to fetch its fs might be best if it's necessary to use fs for the
permission checks.  It should always find a winner on just one
iteration, or two or three in races, except for ptrace keeping zombie
threads alive (otherwise all zombies but the leader self-reap quickly).


Thanks,
Roland

  reply	other threads:[~2005-09-15  7:29 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-09-12 17:46 Sripathi Kodi
2005-09-12 20:49 ` Andrew Morton
2005-09-13 13:10   ` Sripathi Kodi
2005-09-13 14:53     ` Linus Torvalds
2005-09-13 16:51       ` Al Viro
2005-09-13 17:01         ` Linus Torvalds
2005-09-13 17:12           ` Al Viro
2005-09-13 21:30             ` Sripathi Kodi
2005-09-13 21:56               ` Roland McGrath
2005-09-13 21:57               ` Al Viro
2005-09-13 23:10               ` Linus Torvalds
2005-09-14  1:47                 ` Sripathi Kodi
2005-09-14  1:52                   ` Al Viro
2005-09-14 14:37                   ` Bill Davidsen
2005-09-15  0:30                     ` Sripathi Kodi
2005-09-14  1:50                 ` Al Viro
2005-09-15  0:31                   ` Sripathi Kodi
2005-09-15  0:55                     ` Roland McGrath
2005-09-15  1:38                       ` Sripathi Kodi
2005-09-15  2:12                         ` Al Viro
2005-09-15  7:29                           ` Roland McGrath [this message]
2005-09-15  1:18                     ` Al Viro
2005-09-16  0:54                       ` Sripathi Kodi
2005-09-16  7:46                         ` Al Viro
2005-09-16 15:06                           ` Sripathi Kodi
2005-09-16 18:05                           ` Daniel Jacobowitz
2005-09-16 18:14                             ` Al Viro

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