From: Christoph Hellwig <hch@infradead.org>
To: Andrew Morton <akpm@zip.com.au>,
Alexander Viro <viro@math.psu.edu>,
Linus Torvalds <torvalds@transmeta.com>,
linux-kernel@vger.kernel.org
Subject: Re: [prepatch] address_space-based writeback
Date: Fri, 12 Apr 2002 00:10:02 +0100 [thread overview]
Message-ID: <20020412001002.A29540@infradead.org> (raw)
In-Reply-To: <a94r5k$m23$1@penguin.transmeta.com> <Pine.GSO.4.21.0204111629370.21089-100000@weyl.math.psu.edu> <3CB5FFB5.693E7755@zip.com.au> <20020411225536.GE8062@turbolinux.com>
On Thu, Apr 11, 2002 at 04:55:36PM -0600, Andreas Dilger wrote:
> At one time Linus proposed having an array of dirty bits for a page,
> which would allow us to mark only parts of a page dirty (say down to
> the sector level). I believe this was in the discussion about moving
> the block devices to the page cache around 2.4.10.
The early XFS code used to do this for kiobuf-based block I/O, but it
got dropped around 2.4.8 IIRC. The new page->private handling from akpm
which seems to be merged in Linus' BK tree (Linus: please push it to
bkbits.net, thanks :)) can be used to do the same if and only if we don't
need the buffer_heads attached to the page.
next prev parent reply other threads:[~2002-04-11 23:10 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-10 11:21 [prepatch] address_space-based writeback Andrew Morton
2002-04-10 11:34 ` Alexander Viro
2002-04-10 19:16 ` Andrew Morton
2002-04-10 20:53 ` Alexander Viro
2002-04-10 22:12 ` Jan Harkes
2002-04-10 21:44 ` Andrew Morton
2002-04-10 22:56 ` Anton Altaparmakov
2002-04-10 22:31 ` Andrew Morton
2002-04-11 20:20 ` Linus Torvalds
2002-04-11 20:41 ` Alexander Viro
2002-04-11 21:27 ` Andrew Morton
2002-04-11 22:55 ` Andreas Dilger
2002-04-11 22:49 ` Andrew Morton
2002-04-12 0:12 ` Linus Torvalds
2002-04-11 23:10 ` Christoph Hellwig [this message]
2002-04-11 23:22 ` Anton Altaparmakov
2002-04-11 23:03 ` Andrew Morton
2002-04-12 4:19 ` Bill Davidsen
2002-04-12 1:15 ` Anton Altaparmakov
2002-04-12 1:37 ` Linus Torvalds
2002-04-12 7:57 ` Anton Altaparmakov
2002-04-27 15:53 ` Jan Harkes
2002-04-28 3:03 ` Anton Altaparmakov
2002-04-29 9:03 ` Nikita Danilov
2002-04-29 11:11 ` Anton Altaparmakov
2002-04-29 11:59 ` Nikita Danilov
2002-04-29 12:34 ` Anton Altaparmakov
2002-04-29 13:01 ` Christoph Hellwig
2002-04-30 17:19 ` Denis Vlasenko
2002-04-30 13:15 ` john slee
2002-04-30 13:24 ` Billy O'Connor
2002-04-30 13:36 ` jlnance
2002-04-30 13:40 ` Keith Owens
2002-05-01 19:18 ` Denis Vlasenko
2002-05-02 8:49 ` Anton Altaparmakov
2002-05-03 15:35 ` Denis Vlasenko
2002-05-03 12:49 ` Helge Hafting
2002-05-03 22:47 ` Denis Vlasenko
2002-05-03 21:50 ` Anton Altaparmakov
2002-05-05 0:46 ` Denis Vlasenko
2002-05-03 7:56 ` Pavel Machek
2002-05-03 14:48 ` Rob Landley
2002-05-05 0:42 ` Denis Vlasenko
2002-04-30 16:12 ` Peter Wächtler
2002-04-10 23:02 ` Jan Harkes
2002-04-10 19:29 ` Jeremy Jackson
2002-04-10 19:41 ` Andrew Morton
2002-04-15 8:47 ` Andrew Morton
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