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From: Chris Wedgwood <cw@f00f.org>
To: Andrea Arcangeli <andrea@suse.de>
Cc: "Eric W. Biederman" <ebiederman@uswest.net>,
	Linus Torvalds <torvalds@transmeta.com>,
	Alexander Viro <viro@math.psu.edu>,
	Daniel Phillips <phillips@innominate.de>,
	linux-kernel@vger.kernel.org
Subject: Re: [RFC] Generic deferred file writing
Date: Sun, 31 Dec 2000 14:13:35 +1300	[thread overview]
Message-ID: <20001231141335.B21365@metastasis.f00f.org> (raw)
In-Reply-To: <Pine.LNX.4.10.10012301214210.1017-100000@penguin.transmeta.com> <m1u27lpo1g.fsf@frodo.biederman.org> <20001231020234.A15179@athlon.random>
In-Reply-To: <20001231020234.A15179@athlon.random>; from andrea@suse.de on Sun, Dec 31, 2000 at 02:02:34AM +0100

On Sun, Dec 31, 2000 at 02:02:34AM +0100, Andrea Arcangeli wrote:

    Yes, we need to add one field to the in-core superblock to do
    this accounting.

How does this work for filesystems like reisefs which do tail merging
and other filesystems which might do sub-clock allocation?

We either need more than one field (or a byte counter) + lock or
perhaps a generic fields + callback to the fs itself.
    
    > estimate than just the data blocks it should not be hard to add
    > an extra callback to the filesystem.
    
    Yes, I was thinking at this callback too. Such a callback is
    nearly the only support we need from the filesystem to provide
    allocate on flush.

I think a callback is the way to go.



  --cw
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  reply	other threads:[~2000-12-31  1:44 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-12-30  0:25 test13-pre6 Linus Torvalds
2000-12-30  0:49 ` test13-pre6 Alexander Viro
2000-12-30  1:03   ` test13-pre6 Linus Torvalds
2000-12-30 18:09     ` test13-pre6 Alexander Viro
2000-12-30  2:25 ` test13-pre6 Daniel Phillips
2000-12-30  3:16   ` test13-pre6 Linus Torvalds
2000-12-30 18:58     ` [RFC] Generic deferred file writing Daniel Phillips
2000-12-30 20:05       ` Linus Torvalds
2000-12-30 20:06       ` Alexander Viro
2000-12-30 20:21         ` Linus Torvalds
2000-12-30 21:10           ` Andreas Dilger
2000-12-30 21:46           ` Alexander Viro
2000-12-30 23:12             ` Daniel Phillips
2000-12-30 22:00           ` Eric W. Biederman
2000-12-30 22:44             ` Linus Torvalds
2000-12-31  0:26               ` Eric W. Biederman
2000-12-31  1:02             ` Andrea Arcangeli
2000-12-31  1:13               ` Chris Wedgwood [this message]
2000-12-31  1:50               ` Alexander Viro
2000-12-31  2:34                 ` Andrea Arcangeli
2000-12-31  2:09               ` Roman Zippel
2000-12-31  2:28                 ` Linus Torvalds
2000-12-31 12:58                   ` Roman Zippel
2001-04-21 20:06                     ` Races in affs_unlink(), affs_rmdir() and affs_rename() Alexander Viro
2001-04-21 22:16                       ` Roman Zippel
2001-04-22  5:53                         ` Alexander Viro
2001-04-22 12:57                           ` Roman Zippel
2001-04-22 13:15                             ` Alexander Viro
2000-12-31 14:38                   ` [RFC] Generic deferred file writing Andrea Arcangeli
2000-12-31 16:33                     ` Linus Torvalds
2000-12-31 16:50                       ` Andrea Arcangeli
2000-12-31 16:51                       ` Alexander Viro
2000-12-31 17:12                         ` Linus Torvalds
2000-12-31 18:30                   ` Daniel Phillips
2000-12-31 18:44                     ` Linus Torvalds
2000-12-31 19:10                       ` Daniel Phillips
2000-12-31 19:31                         ` Linus Torvalds
2000-12-31 21:03                       ` Roman Zippel
2000-12-31 21:32                         ` Linus Torvalds
2001-01-02 18:27                   ` Chris Mason
2000-12-30  3:08 ` test13-pre6 (Fork Bug with Athlons? Temporary Fix) Byron Stanoszek
2000-12-30  3:36   ` Linus Torvalds
2000-12-30  5:55     ` Andi Kleen
2000-12-30  5:13   ` Linus Torvalds
2000-12-30  8:13   ` Graham Murray
2000-12-30  4:21 ` test13-pre6 Dan Aloni
2001-01-04 20:23 ` test13-pre6 Stephen C. Tweedie
2001-01-04 22:15   ` test13-pre6 stewart
     [not found] <Pine.LNX.4.10.10012311726230.1671-100000@penguin.transmeta.com>
2001-01-01  2:50 ` [RFC] Generic deferred file writing Roman Zippel
2001-01-01  3:47   ` Alexander Viro
2001-01-01 12:44     ` Roman Zippel
2001-01-01 15:16       ` Alexander Viro
2001-01-02  3:00         ` Roman Zippel
2001-01-02  5:00           ` Alexander Viro
2001-01-02 16:53             ` Roman Zippel
2001-01-01 20:00     ` Daniel Phillips

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