From: Paul Mackerras <paulus@samba.org>
To: torvalds@transmeta.com (Linus Torvalds)
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.5.1-pre2 does not compile
Date: Wed, 28 Nov 2001 09:02:41 +1100 (EST) [thread overview]
Message-ID: <15364.3457.368582.994067@gargle.gargle.HOWL> (raw)
In-Reply-To: <9u0ua1$1g2$1@penguin.transmeta.com>
In-Reply-To: <200111272044.fARKiTv13653@db0bm.ampr.org> <9u0ua1$1g2$1@penguin.transmeta.com>
Linus Torvalds writes:
> The next-generation block-layer support is starting to be merged into
> the 2.5.x tree, and that breaks old drivers that haven't been updated to
> the new locking.
>
> In particular, there used to be _one_ lock for the whole IO system
> ("io_request_lock"), and these days it's a per-block-queue lock.
>
> In many cases the fix is as simple as just replacing the
> "io_request_lock" with "host->host_lock", but sometimes this is
> complicated by the need to pass the right data structures down far
> enough..
Is there a description of the new block layer and its interface to
block device drivers somewhere? That would be helpful, since Ben
Herrenschmidt and I are going to have to convert several
powermac-specific drivers.
Thanks,
Paul.
next prev parent reply other threads:[~2001-11-27 22:03 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-27 20:44 f5ibh
2001-11-27 20:50 ` Linus Torvalds
2001-11-27 22:09 ` Christoph Hellwig
2001-11-27 22:22 ` onboard ethernet/sound on Soyo SY-K7V? Dax Kelson
2001-11-27 22:47 ` François Cami
2001-11-27 22:57 ` Jeff Garzik
2001-11-27 22:29 ` 2.5.1-pre2 does not compile Robert Love
2001-11-28 0:29 ` Linus Torvalds
2001-11-28 12:55 ` Christoph Hellwig
2001-11-28 16:26 ` Andreas Dilger
2001-11-28 16:42 ` Christoph Hellwig
2001-11-28 16:39 ` Martin Dalecki
2001-11-28 17:27 ` Andreas Dilger
2001-11-28 0:40 ` Andre Hedrick
2001-11-27 22:02 ` Paul Mackerras [this message]
2001-11-28 1:04 ` Linus Torvalds
2001-11-28 1:34 ` Block I/O Enchancements, 2.5.1-pre2 Jeff V. Merkey
2001-11-28 1:45 ` Jeff Garzik
2001-11-28 1:55 ` Jeff V. Merkey
2001-11-28 2:32 ` Jeff Garzik
2001-11-28 3:38 ` Linus Torvalds
2001-11-30 2:19 ` Daniel Phillips
2001-11-30 12:21 ` Hans Reiser
[not found] ` <15367.32910.275973.287742@laputa.namesys.com>
2001-12-01 9:31 ` [reiserfs-dev] " Hans Reiser
2001-11-28 10:17 ` Martin Dalecki
2001-11-28 13:35 ` Jens Axboe
2001-11-28 17:29 ` Jeff Merkey
2001-11-28 6:58 ` 2.5.1-pre2 does not compile Jens Axboe
2001-11-28 12:20 ` bio write-up (was: Re: 2.5.1-pre2 does not compile) Jens Axboe
2001-11-29 1:07 ` 2.5.1-pre2 bio offset by one error in VIA IDE Anton Altaparmakov
2001-11-28 23:31 ` Anton Altaparmakov
2001-11-28 23:55 ` Andreas Dilger
2001-11-30 1:53 ` 2.5.1-pre2 does not compile Daniel Phillips
2001-11-27 21:02 Wayne.Brown
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