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Message-Id: <1244811255-5391-1-git-send-email-jens.axboe@oracle.com>
Date: Fri, 12 Jun 2009 14:54:00 +0200
From: Jens Axboe <jens.axboe@...cle.com>
To: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Cc: chris.mason@...cle.com, david@...morbit.com, hch@...radead.org,
akpm@...ux-foundation.org, jack@...e.cz,
yanmin_zhang@...ux.intel.com, richard@....demon.co.uk,
damien.wyart@...e.fr, dedekind1@...il.com, fweisbec@...il.com
Subject: [PATCH 0/15] Per-bdi writeback flusher threads v10
Hi,
Here's the 10th version of the writeback patches. Changes since v9:
- Fix bdi task exit race leaving work on the list, flush it after we
know we cannot be found anymore.
- Rename flusher tasks from bdi-foo to flush-foo. Should make it more
clear to the casual observer.
- Fix a problem with the btrfs bdi register patch that would spew
warnings for > 1 mounted btrfs file system.
- Rebase to current -git, there were some conflicts with the latest work
from viro/hch.
- Fix a block layer core problem were stacked devices would overwrite
the bdi state, causing problems and warning spew.
- In bdi_writeback_all(), in the race occurence of a work allocation
failure, restart scanning from the beginning. Then we can drop the
bdi_lock mutex before diving into bdi specific writeback.
- Convert bdi_lock to a spinlock.
- Use spin_trylock() in bdi_writeback_all(), if this isn't a data
integrity writeback. Debatable, I kind of like it...
- Get rid of BDI_CAP_FLUSH_FORKER, just check for match with the
default_backing_dev_info.
- Fix race in list checking in bdi_forker_task().
For ease of patching, I've put the full diff here:
http://kernel.dk/writeback-v10.patch
and also stored this in a writeback-v10 branch that will not change,
you can pull that into Linus tree from here:
git://git.kernel.dk/linux-2.6-block.git writeback-v10
Please test and report results/interesting finds. Thanks!
b/block/blk-core.c | 6
b/block/blk-settings.c | 4
b/drivers/block/aoe/aoeblk.c | 1
b/drivers/char/mem.c | 1
b/fs/btrfs/disk-io.c | 27 -
b/fs/buffer.c | 2
b/fs/char_dev.c | 1
b/fs/configfs/inode.c | 1
b/fs/fs-writeback.c | 818 +++++++++++++++++++++++++++-------
b/fs/fuse/inode.c | 1
b/fs/hugetlbfs/inode.c | 1
b/fs/nfs/client.c | 1
b/fs/ocfs2/dlm/dlmfs.c | 1
b/fs/ramfs/inode.c | 1
b/fs/super.c | 3
b/fs/sysfs/inode.c | 1
b/fs/ubifs/super.c | 4
b/include/linux/backing-dev.h | 72 ++
b/include/linux/fs.h | 11
b/include/linux/writeback.h | 15
b/kernel/cgroup.c | 1
b/mm/Makefile | 2
b/mm/backing-dev.c | 519 +++++++++++++++++++++
b/mm/page-writeback.c | 157 ------
b/mm/swap_state.c | 1
b/mm/vmscan.c | 2
mm/pdflush.c | 269 -----------
27 files changed, 1317 insertions(+), 606 deletions(-)
--
Jens Axboe
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