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From: Arjan van de Ven <arjanv@redhat.com>
To: "Jack O'Quin" <joq@io.com>
Cc: Chris Wright <chrisw@osdl.org>,
	Paul Davis <paul@linuxaudiosystems.com>,
	Lee Revell <rlrevell@joe-job.com>, Matt Mackall <mpm@selenic.com>,
	Christoph Hellwig <hch@infradead.org>,
	Andrew Morton <akpm@osdl.org>,
	mingo@elte.hu, alan@lxorguk.ukuu.org.uk,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] [request for inclusion] Realtime LSM
Date: Thu, 13 Jan 2005 22:07:51 +0100	[thread overview]
Message-ID: <20050113210750.GA22208@devserv.devel.redhat.com> (raw)
In-Reply-To: <878y6x9h2d.fsf@sulphur.joq.us>

On Thu, Jan 13, 2005 at 03:04:26PM -0600, Jack O'Quin wrote:
> 
> (Probably, this simplistic analysis misses some other, more subtle,
> factors.)

I think you can do nasty things to the locks held by those threads too

> 
> RT threads should not do FS writes of their own.  But, a badly broken
> or malicious one could, I suppose.  So, that might provide a mechanism
> for losing more data than usual.  Is that what you had in mind?

basically yes.
note that "FS writes" can come from various things, including library calls
made and such. But I think you got my point; even though it might seem a bit
theoretical it sure is unpleasant.

  reply	other threads:[~2005-01-13 21:14 UTC|newest]

Thread overview: 266+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-30  2:43 [PATCH] [request for inclusion] Realtime LSM Lee Revell
2005-01-03 14:03 ` Christoph Hellwig
2005-01-03 14:15   ` Arjan van de Ven
2005-01-07 16:40     ` Lee Revell
2005-01-04 18:16   ` Lee Revell
2005-01-04 18:20     ` Christoph Hellwig
2005-01-04 18:55       ` Jack O'Quin
2005-01-04 18:59         ` Lee Revell
2005-01-05  0:01           ` Alan Cox
2005-01-05  1:28             ` Lee Revell
2005-01-05  1:30             ` Lee Revell
2005-01-05  1:50             ` Chris Wright
2005-01-05  1:55               ` Lee Revell
2005-01-05  2:05                 ` Chris Wright
2005-01-05  2:58                   ` Kyle Moffett
2005-01-05  3:45                     ` Chris Wright
2005-01-05  4:06                   ` Jack O'Quin
2005-01-05 11:52                 ` Ingo Molnar
2005-01-05 15:19                   ` Lee Revell
2005-01-05 15:21                   ` Lee Revell
2005-01-07 12:56                     ` Paul Davis
2005-01-07 13:04                       ` Christoph Hellwig
2005-01-07 14:16                         ` Paul Davis
2005-01-07 14:26                           ` Arjan van de Ven
2005-01-07 14:38                             ` Paul Davis
2005-01-07 14:42                               ` Arjan van de Ven
2005-01-07 15:27                                 ` Paul Davis
2005-01-07 15:33                                   ` Arjan van de Ven
2005-01-07 15:41                                     ` Paul Davis
2005-01-07 16:03                                       ` Arjan van de Ven
2005-01-07 16:20                                         ` Takashi Iwai
2005-01-08  5:36                                           ` Con Kolivas
2005-01-08  6:21                                             ` Jack O'Quin
2005-01-07 16:20                                         ` Paul Davis
2005-01-07 21:12                                           ` Lee Revell
2005-01-07 21:49                                             ` Andrew Morton
2005-01-07 22:07                                               ` Valdis.Kletnieks
2005-01-07 22:36                                                 ` Chris Wright
2005-01-07 23:01                                                   ` Valdis.Kletnieks
2005-01-07 23:20                                                     ` Andrew Morton
2005-01-07 23:34                                                       ` Valdis.Kletnieks
2005-01-10 21:05                                                       ` Matt Mackall
2005-01-07 22:10                                               ` Christoph Hellwig
2005-01-07 22:26                                                 ` Paul Davis
2005-01-07 22:29                                                 ` Chris Wright
2005-01-08  6:12                                                   ` Jack O'Quin
2005-01-08 16:56                                                     ` ross
2005-01-08 18:25                                                       ` Christoph Hellwig
2005-01-08 22:20                                                       ` Lee Revell
2005-01-08 22:27                                                         ` Andreas Steinmetz
2005-01-08 22:14                                                     ` Lee Revell
2005-01-10 21:20                                                     ` Matt Mackall
2005-01-11 13:05                                                       ` Paul Davis
2005-01-11 16:28                                                         ` Jack O'Quin
2005-01-11 18:59                                                           ` Matt Mackall
2005-01-11 20:47                                                           ` utz lehmann
2005-01-11 21:07                                                           ` Lee Revell
2005-01-11 19:17                                                         ` Matt Mackall
2005-01-11 19:42                                                           ` Jack O'Quin
2005-01-11 20:50                                                           ` Chris Wright
2005-01-11 20:58                                                             ` Ingo Molnar
2005-01-11 21:14                                                               ` Chris Wright
2005-01-11 21:27                                                                 ` Ingo Molnar
2005-01-11 22:13                                                                   ` Chris Wright
2005-01-11 22:26                                                                     ` Con Kolivas
2005-01-12  3:21                                                                   ` Jack O'Quin
2005-01-12  4:29                                                                     ` Chris Wright
2005-01-13  5:44                                                                   ` Jack O'Quin
2005-01-13  6:34                                                                     ` Matt Mackall
2005-01-13 19:17                                                                       ` Jack O'Quin
2005-01-14 20:52                                                                         ` Lee Revell
2005-01-15  0:42                                                                           ` Jack O'Quin
2005-01-15  2:19                                                                             ` Randy.Dunlap
2005-01-15  4:06                                                                               ` Jack O'Quin
2005-01-15 13:49                                                                     ` Ingo Molnar
2005-01-15 23:02                                                                       ` Jack O'Quin
2005-01-15 23:38                                                                         ` Jack O'Quin
2005-01-16 23:13                                                                           ` Ingo Molnar
2005-01-16 23:57                                                                             ` Jack O'Quin
2005-01-17  9:17                                                                               ` Sytse Wielinga
2005-01-17 14:36                                                                                 ` Ingo Molnar
2005-01-17 10:06                                                                               ` Ingo Molnar
2005-01-18  5:02                                                                                 ` Jack O'Quin
2005-01-18  8:02                                                                                   ` Ingo Molnar
2005-01-18 17:05                                                                                     ` Jack O'Quin
2005-01-19  8:24                                                                                       ` Ingo Molnar
2005-01-19 14:39                                                                                         ` Ingo Molnar
2005-01-19 17:45                                                                                           ` Jack O'Quin
2005-01-19 18:32                                                                                             ` Matt Mackall
2005-01-20  8:07                                                                                               ` Ingo Molnar
2005-01-20  8:05                                                                                             ` Ingo Molnar
2005-01-11 14:30                                                       ` Jack O'Quin
2005-01-11 19:50                                                         ` Matt Mackall
2005-01-11 19:57                                                           ` Jack O'Quin
2005-01-11 20:05                                                             ` Matt Mackall
2005-01-11 20:29                                                               ` Lee Revell
2005-01-11 20:47                                                                 ` Chris Wright
2005-01-11 21:10                                                                   ` Lee Revell
2005-01-11 21:20                                                                     ` Chris Wright
2005-01-11 21:28                                                                   ` Matt Mackall
2005-01-11 21:38                                                                     ` Lee Revell
2005-01-11 21:41                                                                       ` Arjan van de Ven
2005-01-11 22:51                                                                         ` Paul Davis
2005-01-11 23:05                                                                           ` Chris Wright
2005-01-12  1:43                                                                             ` Jack O'Quin
2005-01-12  7:49                                                                               ` Arjan van de Ven
2005-01-12 21:12                                                                                 ` Lee Revell
2005-01-13  0:44                                                                                 ` Jack O'Quin
2005-01-13  7:28                                                                                   ` Arjan van de Ven
2005-01-13 21:04                                                                                     ` Jack O'Quin
2005-01-13 21:07                                                                                       ` Arjan van de Ven [this message]
2005-01-13 21:25                                                                                         ` Lee Revell
2005-01-13 21:43                                                                                           ` Arjan van de Ven
2005-01-13 23:31                                                                                             ` Jack O'Quin
2005-01-14  0:33                                                                                               ` Chris Wright
2005-01-14  0:50                                                                                               ` Con Kolivas
2005-01-14  1:20                                                                                                 ` Matt Mackall
2005-01-14  1:27                                                                                                   ` Con Kolivas
2005-01-14 17:20                                                                                               ` Mike Galbraith
2005-01-15  1:14                                                                                                 ` Jack O'Quin
2005-01-15  8:06                                                                                                   ` Mike Galbraith
2005-01-15 23:48                                                                                                     ` Jack O'Quin
2005-01-14  2:05                                                                                           ` utz lehmann
2005-01-14  2:08                                                                                             ` Con Kolivas
2005-01-14  2:23                                                                                               ` Andrew Morton
2005-01-14  2:35                                                                                               ` utz lehmann
2005-01-14  2:42                                                                                                 ` Con Kolivas
2005-01-14  3:20                                                                                                   ` Andrew Morton
2005-01-14  3:28                                                                                                     ` utz lehmann
2005-01-14  3:26                                                                                                   ` utz lehmann
2005-01-14  2:24                                                                                             ` Nick Piggin
2005-01-14  2:40                                                                                               ` Paul Davis
2005-01-14  2:57                                                                                                 ` Nick Piggin
2005-01-14  3:12                                                                                                 ` Andrew Morton
2005-01-14  3:18                                                                                                   ` Con Kolivas
2005-01-14  3:30                                                                                                     ` Paul Davis
2005-01-14  3:38                                                                                                       ` Con Kolivas
2005-01-14  3:51                                                                                                         ` Paul Davis
2005-01-14  4:00                                                                                                           ` Con Kolivas
2005-01-14  4:16                                                                                                             ` Nick Piggin
2005-01-14  4:04                                                                                                         ` Nick Piggin
2005-01-14  3:31                                                                                                     ` Nick Piggin
2005-01-14  3:34                                                                                                       ` Paul Davis
2005-01-14  4:11                                                                                                       ` Con Kolivas
2005-01-14  4:23                                                                                                         ` Nick Piggin
2005-01-14  4:45                                                                                                           ` Paul Davis
2005-01-14  5:14                                                                                                             ` Nick Piggin
2005-01-14  9:21                                                                                                       ` Will Dyson
2005-01-14  9:54                                                                                                         ` Nick Piggin
2005-01-14  6:57                                                                                                   ` Matt Mackall
2005-01-14  7:04                                                                                                     ` Andrew Morton
2005-01-14  7:55                                                                                                       ` Chris Wright
2005-01-14 20:10                                                                                                     ` Chris Wright
2005-01-14 20:55                                                                                                       ` Matt Mackall
2005-01-14 23:04                                                                                                         ` Chris Wright
2005-01-15  0:58                                                                                                           ` Matt Mackall
2005-01-11 22:05                                                                       ` Matt Mackall
2005-01-11 21:42                                                                     ` Chris Wright
2005-01-11 22:16                                                                       ` Matt Mackall
2005-01-11 22:21                                                                         ` Chris Wright
2005-01-11 22:36                                                                           ` utz lehmann
2005-01-11 22:41                                                                             ` Chris Wright
2005-01-11 22:17                                                                     ` utz
2005-01-11 22:48                                                                     ` Paul Davis
2005-01-11 23:06                                                                       ` Matt Mackall
2005-01-12  2:13                                                                         ` Paul Davis
2005-01-12 19:09                                                                           ` Matt Mackall
2005-01-12 21:25                                                                             ` Lee Revell
2005-01-11 20:19                                                             ` Chris Friesen
2005-01-11 22:45                                                           ` Paul Davis
2005-01-11 21:21                                                     ` Ingo Molnar
2005-01-12  2:10                                                       ` Jack O'Quin
2005-01-15  4:56                                                       ` Jack O'Quin
2005-01-15 14:43                                                         ` Ingo Molnar
2005-01-15 23:10                                                           ` Jack O'Quin
2005-01-16  1:48                                                             ` Jack O'Quin
2005-01-16  4:30                                                               ` Jack O'Quin
2005-01-16 23:22                                                                 ` Ingo Molnar
2005-01-07 23:00                                                 ` Lee Revell
2005-01-07 22:22                                               ` Paul Davis
2005-01-07 22:44                                               ` Andreas Steinmetz
2005-01-07 16:03                                       ` Martin Mares
2005-01-07 16:22                                         ` Paul Davis
2005-01-08 13:04                                           ` Paul Jakma
2005-01-07 14:47                               ` Christoph Hellwig
2005-01-07 15:26                                 ` Paul Davis
2005-01-07 16:08                                   ` Martin Mares
2005-01-07 16:14                                     ` Paul Davis
2005-01-07 16:29                                       ` Martin Mares
2005-01-07 16:36                                         ` Paul Davis
2005-01-07 17:06                                           ` Martin Mares
2005-01-07 17:29                                             ` Chris Wright
2005-01-07 17:32                                               ` Martin Mares
2005-01-07 17:38                                                 ` Chris Wright
2005-01-07 19:55                                                 ` Jack O'Quin
2005-01-07 16:37                                         ` Takashi Iwai
2005-01-07 16:41                                           ` Martin Mares
2005-01-07 17:53                                   ` Chris Wright
2005-01-07 18:01                             ` Chris Wright
2005-01-05 18:18                   ` Jack O'Quin
2005-01-05  4:04             ` Jack O'Quin
2005-01-05 11:25           ` Christoph Hellwig
2005-01-05 17:32             ` Lee Revell
2005-01-05 19:11               ` Christoph Hellwig
2005-01-05 11:20         ` Christoph Hellwig
2005-01-04 18:57       ` Lee Revell
2005-01-05  1:35         ` Andreas Steinmetz
2005-01-05  4:18           ` Alan Cox
2005-01-05  5:50             ` Andrew Morton
2005-01-05 12:06               ` Herbert Poetzl
2005-01-07  1:13                 ` Matt Mackall
2005-01-07  1:55                   ` Alan Cox
2005-01-07 20:05                     ` Matt Mackall
2005-01-05 20:09               ` Olaf Dietsche
2005-01-07  1:18             ` Matt Mackall
2005-01-07  2:36               ` Lee Revell
2005-01-07  5:54               ` Jack O'Quin
2005-01-07 20:02                 ` Matt Mackall
2005-01-07 20:21                   ` Chris Wright
2005-01-07 20:27                   ` Jack O'Quin
2005-01-07 20:46                     ` Matt Mackall
2005-01-07 20:55                       ` Lee Revell
2005-01-07 21:20                         ` Matt Mackall
2005-01-07 21:29                           ` Chris Wright
2005-01-07 20:45                   ` Lee Revell
2005-01-05 11:39           ` Christoph Hellwig
2005-01-05 17:35             ` Lee Revell
2005-01-05 19:11               ` Christoph Hellwig
2005-01-05 11:24         ` Christoph Hellwig
     [not found] <20050112185258.GG2940@waste.org>
2005-01-12 21:16 ` Paul Davis
2005-03-08  3:50   ` Andrew Morton
2005-03-08  3:55     ` Christoph Hellwig
2005-03-08  4:16       ` Andrew Morton
2005-03-08  4:22         ` Ingo Molnar
2005-03-08  4:28           ` Andrew Morton
2005-03-08  4:32             ` Christoph Hellwig
2005-03-08  4:47               ` Matt Mackall
2005-03-08  4:58                 ` Chris Wright
2005-03-08 18:55               ` Lee Revell
2005-03-08 19:11                 ` Paul Davis
2005-03-08 20:29                   ` Andrew Morton
2005-03-08 21:20                 ` Christoph Hellwig
2005-03-08 21:34                   ` Lee Revell
2005-03-08 23:55                     ` James Morris
2005-03-08  5:19           ` Jack O'Quin
2005-03-08  4:33     ` Matt Mackall
2005-03-08  4:40       ` Andrew Morton
2005-03-08  5:30         ` Jack O'Quin
2005-03-08  6:33           ` Matt Mackall
2005-03-09  3:39             ` Jack O'Quin
2005-03-09  3:44               ` Matt Mackall
2005-03-09  4:04                 ` Jack O'Quin
2005-03-10 14:01           ` Pavel Machek
2005-03-08  5:40         ` Peter Williams
2005-03-08  5:49           ` Ingo Molnar
2005-03-08  6:28             ` Peter Williams
2005-03-08  6:40               ` Chris Wright
2005-03-08  6:42                 ` Ingo Molnar
2005-03-08  6:00           ` Chris Wright
2005-03-08  6:18           ` Matt Mackall
2005-03-08  5:38       ` Ingo Molnar
2005-03-08  6:45       ` Chris Wright
2005-03-08  6:49         ` Matt Mackall
2005-03-08  6:55       ` Andrew Morton
2005-03-08  8:45         ` Matt Mackall
2005-03-08 19:17       ` utz lehmann

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