From: Jens Axboe <jens.axboe@oracle.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Artem Bityutskiy <dedekind1@gmail.com>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
tytso@mit.edu, chris.mason@oracle.com, david@fromorbit.com,
hch@infradead.org, akpm@linux-foundation.org, jack@suse.cz,
yanmin_zhang@linux.intel.com, richard@rsk.demon.co.uk,
damien.wyart@free.fr
Subject: Re: [PATCH 0/11] Per-bdi writeback flusher threads v9
Date: Fri, 29 May 2009 00:27:18 +0200 [thread overview]
Message-ID: <20090528222718.GE11363@kernel.dk> (raw)
In-Reply-To: <1243542908.6645.104.camel@laptop>
On Thu, May 28 2009, Peter Zijlstra wrote:
> On Thu, 2009-05-28 at 17:19 +0300, Artem Bityutskiy wrote:
> > Artem Bityutskiy wrote:
> > > question is - should it? 'bdi_register()' a block device,
> > > but we do not have one.
> >
> > Sorry, wanted to say: 'bdi_register()' registers a block
> > device.
>
> BDI stands for backing device info and is not related to block devices
> other than that block devices can also be (ok, always are) backing
> devices.
>
> If you want to do writeback, you need a backing device to write to. The
> BDI is the device abstraction for writeback.
Precisely. Apparently ubifs doesn't register its backing device. I fixed
a similar issue in btrfs, I'll do an audit of the file systems and fix
that up.
--
Jens Axboe
next prev parent reply other threads:[~2009-05-28 22:27 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-28 11:46 [PATCH 0/11] Per-bdi writeback flusher threads v9 Jens Axboe
2009-05-28 11:46 ` [PATCH 01/11] ntfs: remove old debug check for dirty data in ntfs_put_super() Jens Axboe
2009-05-28 11:46 ` [PATCH 02/11] btrfs: properly register fs backing device Jens Axboe
2009-05-28 11:46 ` [PATCH 03/11] writeback: move dirty inodes from super_block to backing_dev_info Jens Axboe
2009-05-28 11:46 ` [PATCH 04/11] writeback: switch to per-bdi threads for flushing data Jens Axboe
2009-05-28 14:13 ` Artem Bityutskiy
2009-05-28 22:28 ` Jens Axboe
2009-05-28 11:46 ` [PATCH 05/11] writeback: get rid of pdflush completely Jens Axboe
2009-05-28 11:46 ` [PATCH 06/11] writeback: separate the flushing state/task from the bdi Jens Axboe
2009-05-28 11:46 ` [PATCH 07/11] writeback: support > 1 flusher thread per bdi Jens Axboe
2009-05-28 11:46 ` [PATCH 08/11] writeback: allow sleepy exit of default writeback task Jens Axboe
2009-05-28 11:46 ` [PATCH 09/11] writeback: add some debug inode list counters to bdi stats Jens Axboe
2009-05-28 11:46 ` [PATCH 10/11] writeback: add name to backing_dev_info Jens Axboe
2009-05-28 11:46 ` [PATCH 11/11] writeback: check for registered bdi in flusher add and inode dirty Jens Axboe
2009-05-28 13:56 ` [PATCH 0/11] Per-bdi writeback flusher threads v9 Peter Zijlstra
2009-05-28 22:28 ` Jens Axboe
2009-05-28 14:17 ` Artem Bityutskiy
2009-05-28 14:19 ` Artem Bityutskiy
2009-05-28 20:35 ` Peter Zijlstra
2009-05-28 22:27 ` Jens Axboe [this message]
2009-05-29 15:37 ` Artem Bityutskiy
2009-05-29 15:50 ` Jens Axboe
2009-05-29 16:02 ` Artem Bityutskiy
2009-05-29 17:07 ` Jens Axboe
2009-06-03 7:39 ` Artem Bityutskiy
2009-06-03 7:44 ` Jens Axboe
2009-06-03 7:46 ` Artem Bityutskiy
2009-06-03 7:50 ` Jens Axboe
2009-06-03 7:54 ` Artem Bityutskiy
2009-06-03 7:59 ` Artem Bityutskiy
2009-06-03 8:07 ` Jens Axboe
2009-05-28 14:41 ` Theodore Tso
2009-05-29 16:07 ` Artem Bityutskiy
2009-05-29 16:20 ` Artem Bityutskiy
2009-05-29 17:09 ` Jens Axboe
2009-06-03 8:11 ` Artem Bityutskiy
2009-05-29 17:08 ` Jens Axboe
2009-06-03 11:12 ` Artem Bityutskiy
2009-06-03 11:42 ` Jens Axboe
2009-06-04 15:20 ` Frederic Weisbecker
2009-06-04 19:07 ` Andrew Morton
2009-06-04 19:13 ` Frederic Weisbecker
2009-06-04 19:50 ` Jens Axboe
2009-06-04 20:10 ` Jens Axboe
2009-06-04 22:34 ` Frederic Weisbecker
2009-06-05 19:15 ` Jens Axboe
2009-06-05 21:14 ` Jan Kara
2009-06-06 0:18 ` Chris Mason
2009-06-06 0:23 ` Jan Kara
2009-06-06 1:06 ` Frederic Weisbecker
2009-06-08 9:23 ` Jens Axboe
2009-06-08 12:23 ` Jan Kara
2009-06-08 12:28 ` Jens Axboe
2009-06-08 13:01 ` Jan Kara
2009-06-09 18:39 ` Frederic Weisbecker
2009-06-06 1:00 ` Frederic Weisbecker
2009-06-06 0:35 ` Frederic Weisbecker
2009-06-04 21:37 ` Frederic Weisbecker
2009-06-05 1:14 ` Zhang, Yanmin
2009-06-05 19:16 ` Jens Axboe
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