From: Alexander Viro <viro@math.psu.edu>
To: Daniel Phillips <phillips@bonn-fries.net>
Cc: Horst von Brand <vonbrand@sleipnir.valparaiso.cl>,
linux-kernel@vger.kernel.org
Subject: Re: intermediate summary of ext3-2.4-0.9.4 thread
Date: Fri, 3 Aug 2001 14:53:43 -0400 (EDT) [thread overview]
Message-ID: <Pine.GSO.4.21.0108031423280.3272-100000@weyl.math.psu.edu> (raw)
In-Reply-To: <0108032026140F.01827@starship>
On Fri, 3 Aug 2001, Daniel Phillips wrote:
> > There is no _locked_ chain.
>
> Locked as in can't be destroyed (refcount) not i_sem or such, sorry for the
> loose usage.
Sigh... You need i_sem for fsync(). Moreover, there is no warranty that
set of objects you sync has _anything_ to path by the time when you start
syncing the second one. Application has information about the use of
parts of tree it's interested in. Kernel doesn't. Notice that all this
wankage was full of "oh, but MTA doesn't care for symlinks", "oh, but MTA
doesn't deal with parents renamed", ad nausea. You know what it means?
Right, that kernel shouldn't try to second-guess the userland. Application
knows what fs objects it wants synced. Kernel provides a primitive for
syncing an object and leaves the choice of objects to sync to application.
Folks, putting policy into the kernel is Wrong(tm). And that's precisely
what you are advocating here.
next prev parent reply other threads:[~2001-08-03 18:53 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <0108030507330F.00440@starship>
[not found] ` <Pine.GSO.4.21.0108022312211.1494-100000@weyl.math.psu.edu>
2001-08-03 13:09 ` intermediate summary of ext3-2.4-0.9.4 thread Daniel Phillips
2001-08-03 14:43 ` Horst von Brand
2001-08-03 17:49 ` Mike Castle
2001-08-04 3:23 ` Daniel Phillips
2001-08-03 18:08 ` Alexander Viro
2001-08-03 18:26 ` Daniel Phillips
2001-08-03 18:53 ` Alexander Viro [this message]
2001-08-03 20:50 ` Daniel Phillips
2001-08-04 3:43 ` Matthias Andree
2001-08-03 18:34 ` Linus Torvalds
2001-08-03 22:01 ` [PATCH] 2.4.8-pre3 fsync entire path (+reiserfs fsync semantic change patch) Chris Wedgwood
2001-08-03 22:33 ` Alexander Viro
2001-08-03 23:16 ` Chris Wedgwood
2001-08-03 23:23 ` Alexander Viro
2001-08-04 3:53 ` Matthias Andree
2001-08-04 5:48 ` Alexander Viro
2001-08-03 22:45 ` Alexander Viro
2001-08-03 23:09 ` Chris Wedgwood
2001-08-03 23:15 ` Alexander Viro
2001-08-03 23:20 ` Chris Wedgwood
2001-08-03 23:25 ` Alexander Viro
2001-08-03 23:35 ` Chris Wedgwood
2001-08-03 23:41 ` Alexander Viro
2001-08-03 23:46 ` Chris Wedgwood
2001-08-03 23:53 ` Alexander Viro
2001-08-04 7:45 ` [PATCH] 2.4.8-pre3 fsync entire path (+reiserfs fsync semanticchange patch) Hans Reiser
2001-08-04 18:31 ` Chris Wedgwood
2001-08-05 1:47 ` Alexander Viro
2001-08-08 17:22 ` [PATCH] 2.4.8-pre3 fsync entire path (+reiserfs fsync semanticchangepatch) Hans Reiser
2001-08-03 23:42 ` [PATCH] 2.4.8-pre3 fsync entire path (+reiserfs fsync semantic change patch) Alan Cox
2001-08-03 23:44 ` Chris Wedgwood
2001-08-04 1:08 ` Andrew Morton
2001-08-04 1:19 ` Chris Wedgwood
2001-08-04 1:45 ` Andrew Morton
2001-08-04 4:04 ` Matthias Andree
2001-08-04 18:30 ` Chris Wedgwood
2001-08-05 12:15 ` Matthias Andree
2001-08-05 12:32 ` Chris Wedgwood
2001-08-05 13:02 ` Matti Aarnio
2001-08-04 21:07 ` Andrew Morton
2001-08-04 21:07 ` Andrew Morton
2001-08-05 7:25 ` Chris Wedgwood
2001-08-09 13:25 ` Matthias Andree
2001-08-04 17:35 ` Jan Harkes
2001-08-04 18:18 ` Chris Wedgwood
2001-08-06 15:02 ` Chris Mason
2001-08-06 20:48 ` Chris Wedgwood
2001-08-03 22:29 ` Anton Altaparmakov
2001-08-03 23:06 ` Chris Wedgwood
2001-08-06 15:23 ` looking for resources for designing loopback filesystem dave-mlist
2001-08-06 16:11 ` Ville Herva
2001-08-03 18:36 ` intermediate summary of ext3-2.4-0.9.4 thread Matthias Andree
2001-08-03 19:16 ` Alexander Viro
2001-08-04 3:40 ` fdatasync(2) is also there (was: intermediate summary of ext3-2.4-0.9.4 thread) Matthias Andree
2001-08-05 0:28 ` Mike Castle
2001-08-03 20:25 intermediate summary of ext3-2.4-0.9.4 thread Sam James
[not found] <0108030354130E.00440@starship>
[not found] ` <200108030207.f7326OpR003086@sleipnir.valparaiso.cl>
2001-08-03 18:34 ` Matthias Andree
-- strict thread matches above, loose matches on Subject: below --
2001-07-26 7:34 ext3-2.4-0.9.4 Andrew Morton
2001-08-01 16:02 ` ext3-2.4-0.9.4 Stephen C. Tweedie
2001-08-02 9:03 ` ext3-2.4-0.9.4 Matthias Andree
2001-08-02 17:26 ` ext3-2.4-0.9.4 Daniel Phillips
2001-08-02 17:37 ` intermediate summary of ext3-2.4-0.9.4 thread Matthias Andree
2001-08-02 18:35 ` Alexander Viro
2001-08-02 18:47 ` Matthias Andree
2001-08-02 22:18 ` Andreas Dilger
2001-08-02 23:11 ` Matthias Andree
[not found] ` <5.1.0.14.2.20010803025916.053e2ec0@pop.cus.cam.ac.uk>
2001-08-03 9:16 ` Matthias Andree
[not found] ` <5.1.0.14.2.20010803002501.00ada0e0@pop.cus.cam.ac.uk>
[not found] ` <20010803021406.A9845@emma1.emma.line.org>
2001-08-03 16:20 ` Jan Harkes
2001-08-03 22:48 ` Andreas Dilger
2001-08-02 19:47 ` Bill Rugolsky Jr.
2001-08-03 18:22 ` Matthias Andree
[not found] ` <Pine.LNX.4.33.0108030051070.1703-100000@fogarty.jakma.org>
[not found] ` <20010803021642.B9845@emma1.emma.line.org>
2001-08-03 7:03 ` Eric W. Biederman
2001-08-03 8:39 ` Matthias Andree
2001-08-03 9:57 ` Christoph Hellwig
2001-08-04 7:55 ` Eric W. Biederman
2001-08-03 8:30 ` Stephen C. Tweedie
2001-08-03 18:28 ` Matthias Andree
2001-08-03 8:50 ` David Weinehall
2001-08-03 18:31 ` Matthias Andree
2001-08-03 19:59 ` Albert D. Cahalan
2001-08-03 19:54 ` Gregory Maxwell
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