From: jw schultz <jw@pegasys.ws>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: The reason to call it 3.0 is the desktop (was Re: [OT] 2.6 not3.0 - (NUMA))
Date: Mon, 7 Oct 2002 16:47:41 -0700 [thread overview]
Message-ID: <20021007234740.GA6537@pegasys.ws> (raw)
In-Reply-To: <3DA1F9AD.1F3BF949@digeo.com>
On Mon, Oct 07, 2002 at 02:16:29PM -0700, Andrew Morton wrote:
> Linus Torvalds wrote:
> >
> > On 7 Oct 2002, Alan Cox wrote:
> > >
> > > Factoring the uid/gid/pid in actually may help in other ways. If we are
> > > doing it by pid or by uid we will reduce the interleave of multiple
> > > files thing you sometimes get
> >
> > 'pid' would probably work better than what we have now, even though I bet
> > it would get confused by a large number of installers (ie "make install"
> > in just about any project will use multiple different processes to copy
> > over separate subdirectories. In the X11R6 tree it uses individual "cp"
> > processes for each file!)
> >
> > The session ID would avoid some of that, but they both have a fundamental
> > problem: neither pid nor session ID is actually saved in any directory
> > structure, so it's quite hard to use that as a heuristic for whether a new
> > file should go into the same directory group as the directory it is
> > created in.
> >
> > That's why "uid" would work better.
>
> Sound good to me. At leat this puts a veneer of respectability over
> decapitating find_group_other(), which is really what we all want
> to do anyway ;)
>
> > The uid has a different issue, though,
> > namely the fact that when user directories are created, they are basically
> > always created as uid 0 first, and then a "chown" - which means that the
> > user heuristic wouldn't actually trigger at the right time. So the
> > heuristic couldn't be just "newfile->uid == directory->uid", it would have
> > to be something better.
>
> Last time, Al suggested that we always use the find_group_other() approach
> if the directory is being made at the top-level of the filesystem. So
> if /home is a mountpoint, the user directories get spread out.
>
> I think this, and the UID comparison will be good enough.
How about UID == 0? Other than install and restore tree
creation (top levels) is done by root but tree population
tends to be done by non-root. That would cause /home/* or
/project/* etc to be in seperate groups but the contents of
each would (mostly) have locality.
Let's see, that would be..
- if (S_ISDIR(mode))
+ if (S_ISDIR(mode) && !current->fsuid)
group = find_group_dir(sb, dir->u.ext2_i.i_block_group);
else
group = find_group_other(sb, dir->u.ext2_i.i_block_group);
--
________________________________________________________________
J.W. Schultz Pegasystems Technologies
email address: jw@pegasys.ws
Remember Cernan and Schmitt
next prev parent reply other threads:[~2002-10-07 23:42 UTC|newest]
Thread overview: 206+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-24 1:54 [PATCH-RFC] 4 of 4 - New problem logging macros, SCSI RAID device driver Larry Kessler
2002-09-24 2:22 ` Jeff Garzik
2002-09-26 15:52 ` Alan Cox
2002-09-26 22:55 ` [PATCH-RFC] 4 of 4 - New problem logging macros, SCSI RAIDdevice driver Larry Kessler
2002-09-26 22:58 ` Jeff Garzik
2002-09-26 23:07 ` Linus Torvalds
2002-09-27 2:27 ` Jeff Garzik
2002-09-27 4:45 ` Linus Torvalds
2002-09-28 7:46 ` Ingo Molnar
2002-09-28 9:16 ` jw schultz
2002-09-30 14:05 ` Denis Vlasenko
2002-09-30 10:22 ` Tomas Szepe
2002-09-30 11:10 ` jw schultz
2002-09-30 11:17 ` Adrian Bunk
2002-09-30 19:48 ` Rik van Riel
2002-09-30 20:30 ` Christoph Hellwig
2002-09-28 15:40 ` Kernel version [Was: Re: [PATCH-RFC] 4 of 4 - New problem logging macros, SCSI RAIDdevice driver] Horst von Brand
2002-09-29 1:31 ` v2.6 vs v3.0 Linus Torvalds
2002-09-29 6:14 ` james
2002-09-29 6:55 ` Andre Hedrick
2002-09-29 12:59 ` Gerhard Mack
2002-09-29 13:46 ` Dr. David Alan Gilbert
2002-09-29 14:06 ` Wakko Warner
2002-09-29 15:42 ` Jens Axboe
2002-09-29 16:21 ` Alan Cox
2002-09-29 16:17 ` Jens Axboe
2002-09-30 0:39 ` Jeff Chua
2002-09-29 16:22 ` Dave Jones
2002-09-29 16:26 ` Jens Axboe
2002-09-29 21:46 ` Matthias Andree
2002-09-30 7:05 ` Michael Clark
2002-09-30 7:22 ` Andrew Morton
2002-09-30 13:08 ` Kevin Corry
2002-09-30 13:05 ` Kevin Corry
2002-09-30 13:49 ` Michael Clark
2002-09-30 14:26 ` Kevin Corry
2002-09-30 13:59 ` Michael Clark
2002-09-30 15:50 ` Kevin Corry
2002-09-29 17:06 ` Jochen Friedrich
2002-09-29 15:18 ` Trever L. Adams
2002-09-29 15:45 ` Jens Axboe
2002-09-29 15:59 ` Trever L. Adams
2002-09-29 16:06 ` Jens Axboe
2002-09-29 16:13 ` Trever L. Adams
2002-09-30 6:54 ` Kai Henningsen
2002-09-30 18:40 ` Bill Davidsen
2002-10-01 12:38 ` Matthias Andree
2002-10-04 19:58 ` Bill Davidsen
2002-09-29 17:42 ` Linus Torvalds
2002-09-29 17:54 ` Rik van Riel
2002-09-29 18:24 ` Alan Cox
2002-09-30 7:56 ` Jens Axboe
2002-09-30 9:53 ` Andre Hedrick
2002-09-30 11:54 ` Jens Axboe
2002-09-30 12:58 ` Alan Cox
2002-09-30 13:05 ` Jens Axboe
2002-10-01 2:17 ` Andre Hedrick
2002-09-30 16:39 ` jbradford
2002-09-30 16:47 ` Pau Aliagas
2002-09-29 7:16 ` jbradford
2002-09-29 8:08 ` Jeff Garzik
2002-09-29 8:17 ` David S. Miller
2002-09-29 9:12 ` Jens Axboe
2002-09-29 11:19 ` Murray J. Root
2002-09-29 15:50 ` Jens Axboe
2002-09-30 7:01 ` Kai Henningsen
2002-09-29 16:04 ` Zwane Mwaikambo
2002-09-29 14:56 ` Alan Cox
2002-09-29 15:38 ` Jens Axboe
2002-09-29 16:30 ` Dave Jones
2002-09-29 16:42 ` Bjoern A. Zeeb
2002-09-29 21:16 ` Russell King
2002-09-29 21:32 ` Alan Cox
2002-09-29 21:49 ` steve
2002-09-29 21:52 ` Matthias Andree
2002-09-30 7:31 ` Tomas Szepe
2002-09-30 15:33 ` Jan Harkes
2002-09-30 18:13 ` Jeff Willis
2002-09-29 17:48 ` Linus Torvalds
2002-09-29 18:13 ` Jaroslav Kysela
2002-09-30 19:32 ` Bill Davidsen
2002-10-01 6:26 ` Jens Axboe
2002-10-01 7:54 ` Mikael Pettersson
2002-10-01 8:27 ` Jens Axboe
2002-10-01 8:44 ` jbradford
2002-10-01 11:31 ` Alan Cox
2002-10-01 11:25 ` Jens Axboe
2002-09-29 15:34 ` Andi Kleen
2002-09-29 17:26 ` Jochen Friedrich
2002-09-29 17:35 ` Jeff Garzik
2002-09-30 0:00 ` Andi Kleen
2002-10-01 19:28 ` IPv6 stability (success story ;) Petr Baudis
2002-09-29 9:15 ` v2.6 vs v3.0 Jens Axboe
2002-09-29 19:53 ` james
2002-09-29 15:26 ` Matthias Andree
2002-09-29 16:24 ` Alan Cox
2002-09-29 22:00 ` Matthias Andree
2002-09-30 19:02 ` Bill Davidsen
2002-09-30 18:37 ` Bill Davidsen
2002-10-03 15:51 ` [OT] 2.6 not 3.0 - (WAS Re: [PATCH-RFC] 4 of 4 - New problem logging macros, SCSI RAIDdevice) jbradford
2002-10-03 15:57 ` Linus Torvalds
2002-10-03 16:16 ` [OT] 2.6 not 3.0 - (WAS Re: [PATCH-RFC] 4 of 4 - New problem jbradford
2002-10-03 22:30 ` Greg KH
2002-10-04 6:33 ` jbradford
2002-10-04 6:37 ` Greg KH
2002-10-04 7:17 ` jbradford
2002-10-04 7:30 ` Greg KH
2002-10-03 16:37 ` [OT] 2.6 not 3.0 - (WAS Re: [PATCH-RFC] 4 of 4 - New problem logging macros, SCSI RAIDdevice) Alan Cox
2002-10-03 16:56 ` Linus Torvalds
2002-10-03 17:40 ` Alan Cox
2002-10-03 19:55 ` jlnance
2002-10-03 16:51 ` Dave Jones
2002-10-03 17:04 ` Alan Cox
2002-10-03 20:43 ` Andrew Morton
2002-10-03 22:05 ` Dave Jones
2002-10-04 3:46 ` Andreas Boman
2002-10-04 7:44 ` jbradford
2002-10-03 19:51 ` Rik van Riel
2002-10-04 22:26 ` [OT] 2.6 not 3.0 - (NUMA) Martin J. Bligh
2002-10-04 23:13 ` Linus Torvalds
2002-10-05 0:21 ` Martin J. Bligh
2002-10-05 0:36 ` Linus Torvalds
2002-10-05 1:25 ` Michael Hohnbaum
2002-10-05 20:30 ` The reason to call it 3.0 is the desktop (was Re: [OT] 2.6 not 3.0 - (NUMA)) Rob Landley
2002-10-06 2:15 ` Andrew Morton
2002-10-06 9:42 ` Russell King
2002-10-06 17:06 ` Alan Cox
2002-10-06 13:44 ` Oliver Neukum
2002-10-06 15:19 ` Martin J. Bligh
2002-10-06 15:14 ` Oliver Neukum
2002-10-07 8:08 ` Helge Hafting
2002-10-07 9:18 ` Oliver Neukum
2002-10-07 14:11 ` Jan Hudec
2002-10-07 15:01 ` Jesse Pollard
2002-10-07 15:34 ` Jan Hudec
2002-10-08 3:12 ` [OT] " Scott Mcdermott
2002-10-10 23:49 ` Mike Fedyk
2002-10-07 15:15 ` Martin J. Bligh
2002-10-08 13:49 ` Helge Hafting
2002-10-07 17:43 ` Daniel Phillips
2002-10-07 18:31 ` Andrew Morton
2002-10-07 18:51 ` Linus Torvalds
2002-10-07 20:14 ` Alan Cox
2002-10-07 20:31 ` The reason to call it 3.0 is the desktop (was Re: [OT] 2.6 not3.0 " Andrew Morton
2002-10-07 20:46 ` Linus Torvalds
2002-10-07 20:44 ` The reason to call it 3.0 is the desktop (was Re: [OT] 2.6 not 3.0 " Linus Torvalds
2002-10-07 21:16 ` The reason to call it 3.0 is the desktop (was Re: [OT] 2.6 not3.0 " Andrew Morton
2002-10-07 23:47 ` jw schultz [this message]
2002-10-11 0:02 ` Mike Fedyk
2002-10-07 18:58 ` The reason to call it 3.0 is the desktop (was Re: [OT] 2.6 not 3.0 " Chris Friesen
2002-10-07 19:21 ` Daniel Phillips
2002-10-07 19:35 ` Linus Torvalds
2002-10-08 0:39 ` Theodore Ts'o
2002-10-08 2:59 ` Andrew Morton
2002-10-08 16:15 ` Theodore Ts'o
2002-10-08 19:39 ` Andrew Morton
2002-10-08 17:06 ` Rob Landley
2002-10-07 19:36 ` Andrew Morton
2002-10-08 2:36 ` Simon Kirby
2002-10-08 2:47 ` Daniel Phillips
2002-10-08 2:50 ` Andrew Morton
2002-10-08 2:54 ` Simon Kirby
2002-10-08 3:00 ` Andrew Morton
2002-10-08 16:17 ` Theodore Ts'o
2002-10-08 12:49 ` jlnance
2002-10-08 17:09 ` Andrew Morton
2002-10-10 20:53 ` Thomas Zimmerman
2002-10-08 13:54 ` Helge Hafting
2002-10-08 15:31 ` Andreas Dilger
2002-10-07 19:05 ` Daniel Phillips
2002-10-07 19:24 ` Linus Torvalds
2002-10-07 20:02 ` Daniel Phillips
2002-10-07 20:14 ` Andrew Morton
2002-10-07 20:22 ` Daniel Phillips
2002-10-07 20:28 ` Linus Torvalds
2002-10-07 21:16 ` Daniel Phillips
2002-10-07 21:55 ` Linus Torvalds
2002-10-07 22:02 ` Daniel Phillips
2002-10-07 22:12 ` Andrew Morton
2002-10-08 8:49 ` Padraig Brady
2002-10-07 22:14 ` Charles Cazabon
2002-10-30 18:26 ` Lee Leahu
2002-10-06 6:33 ` Martin J. Bligh
2002-10-07 5:28 ` John Alvord
2002-10-07 8:39 ` The reason to call it 3.0 is the desktop (was Re: [OT] 2.6 n Giuliano Pochini
2002-10-07 13:56 ` The reason to call it 3.0 is the desktop (was Re: [OT] 2.6 not 3.0 - (NUMA)) Jesse Pollard
2002-10-07 14:03 ` Rob Landley
2002-10-08 22:14 ` Jesse Pollard
2002-10-08 19:11 ` Rob Landley
2002-10-09 8:17 ` Alexander Kellett
2002-10-07 18:22 ` Daniel Phillips
2002-10-08 8:19 ` Jan Hudec
2002-10-11 23:53 ` Hans Reiser
2002-10-11 20:26 ` Rob Landley
2002-10-12 4:14 ` Nick LeRoy
2002-10-13 17:27 ` Rob Landley
2002-10-12 10:03 ` Hans Reiser
2002-10-13 17:32 ` Rob Landley
2002-10-13 23:51 ` Hans Reiser
2002-10-14 16:33 ` Rob Landley
2002-10-14 7:10 ` Nikita Danilov
2002-10-21 15:36 ` [OT] Please don't call it 3.0!! (was Re: The reason to call it 3.0 is the desktop (was Re: [OT] 2.6 not 3.0 - (NUMA))) Calin A. Culianu
2002-10-21 16:20 ` Wakko Warner
2002-10-12 11:42 ` The reason to call it 3.0 is the desktop (was Re: [OT] 2.6 not 3.0 - (NUMA)) Matthias Andree
2002-10-12 14:56 ` Hugh Dickins
2002-09-27 11:32 ` [PATCH-RFC] 4 of 4 - New problem logging macros, SCSI RAIDdevice driver Alan Cox
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