From: Andrew Morton <akpm@linux-foundation.org>
To: Jan Kara <jack@suse.cz>
Cc: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC] JBD ordered mode rewrite
Date: Thu, 6 Mar 2008 15:53:01 -0800 [thread overview]
Message-ID: <20080306155301.52034da0.akpm@linux-foundation.org> (raw)
In-Reply-To: <20080306174209.GA14193@duck.suse.cz>
On Thu, 6 Mar 2008 18:42:09 +0100
Jan Kara <jack@suse.cz> wrote:
> Below is my rewrite of ordered mode in JBD. Now we don't have a list of
> data buffers that need syncing on transaction commit but a list of inodes
> that need writeout during commit. This brings all sorts of advantages such
> as possibility to get rid of journal heads and buffer heads for data
> buffers in ordered mode, better ordering of writes on transaction commit,
> simplification of some JBD code, no more anonymous pages when truncate of
> data being committed happens. The patch has survived some light testing
> but it still has some potential of eating your data so beware :) I've run
> dbench to see whether we didn't decrease performance by different handling
> of truncate and the throughput I'm getting on my machine is the same (OK,
> is lower by 0.5%) if I disable the code in truncate waiting for commit to
> finish... Also the throughput of dbench is about 2% better with my patch
> than with current JBD.
> Any comments or testing most welcome.
Thanks for plugging away with this.
Please change your patch preparation tools to always always include a
diffstat, OK?
fs/buffer.c | 3
fs/ext3/ialloc.c | 1
fs/ext3/inode.c | 118 +++++++++---------
fs/ext3/super.c | 2
fs/jbd/checkpoint.c | 1
fs/jbd/commit.c | 257 +++++++++++++----------------------------
fs/jbd/journal.c | 45 +++++++
fs/jbd/transaction.c | 288 +++++++++++-----------------------------------
fs/mpage.c | 5
include/linux/ext3_fs.h | 1
include/linux/ext3_fs_i.h | 1
include/linux/jbd.h | 70 +++++++----
include/linux/writeback.h | 2
13 files changed, 326 insertions(+), 468 deletions(-)
Would it make sense to turn this patch into a patch series sometime?
next prev parent reply other threads:[~2008-03-06 23:53 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-06 17:42 [RFC] JBD ordered mode rewrite Jan Kara
2008-03-06 19:05 ` Josef Bacik
2008-03-10 16:30 ` Jan Kara
2008-03-06 23:53 ` Andrew Morton [this message]
2008-03-10 17:38 ` Jan Kara
2008-03-07 1:34 ` Mark Fasheh
2008-03-10 18:00 ` Jan Kara
2008-03-07 10:55 ` Mingming Cao
2008-03-10 18:29 ` Jan Kara
2008-03-07 23:52 ` Andreas Dilger
2008-03-08 0:08 ` Mingming Cao
2008-03-08 12:14 ` Christoph Hellwig
2008-03-10 19:54 ` Jan Kara
2008-03-10 21:37 ` Andreas Dilger
2008-04-25 23:38 ` Possible race between direct IO and JBD? Mingming Cao
2008-04-26 10:41 ` Andrew Morton
2008-04-28 12:26 ` Jan Kara
2008-04-28 17:11 ` Badari Pulavarty
2008-04-28 18:09 ` Jan Kara
2008-04-28 19:09 ` Mingming Cao
2008-04-29 12:43 ` Jan Kara
2008-04-29 17:49 ` Mingming Cao
2008-05-01 15:16 ` [PATCH] jbd_commit_transaction() races with journal_try_to_drop_buffers() causing DIO failures Badari Pulavarty
2008-05-01 22:08 ` Mingming Cao
2008-05-05 17:06 ` Jan Kara
2008-05-05 17:53 ` Mingming Cao
2008-05-06 0:10 ` Badari Pulavarty
2008-05-09 22:27 ` Mingming Cao
2008-05-12 15:54 ` Jan Kara
2008-05-12 19:23 ` Mingming Cao
2008-05-13 14:20 ` Jan Kara
2008-05-13 0:39 ` Mingming Cao
2008-05-13 14:54 ` Jan Kara
2008-05-13 16:37 ` Mingming Cao
2008-05-13 22:23 ` Mingming Cao
2008-05-14 17:08 ` Jan Kara
2008-05-14 17:41 ` Mingming Cao
2008-05-14 18:14 ` Jan Kara
2008-05-16 14:13 ` Mingming Cao
2008-05-16 14:14 ` [PATCH] Fix DIO EIO error caused by race between jbd_commit_transaction() and journal_try_to_drop_buffers() Mingming Cao
2008-05-16 15:01 ` Josef Bacik
2008-05-16 17:11 ` Mingming Cao
2008-05-16 17:17 ` Badari Pulavarty
2008-05-16 17:30 ` Mingming Cao
2008-05-16 17:12 ` Badari Pulavarty
2008-05-16 21:01 ` [PATCH] JBD: Fix DIO EIO error caused by race between free buffer and commit trasanction Mingming Cao
2008-05-18 22:37 ` Jan Kara
2008-05-19 19:59 ` Mingming Cao
2008-05-19 20:25 ` Andrew Morton
2008-05-19 22:07 ` Mingming Cao
2008-05-20 9:30 ` Jens Axboe
2008-05-20 17:47 ` Mingming Cao
2008-05-20 18:02 ` [PATCH-v2] JBD: Fix " Mingming Cao
2008-05-20 23:53 ` Jan Kara
2008-05-21 17:14 ` Mingming
2008-05-24 22:44 ` Jan Kara
2008-05-28 18:18 ` Mingming Cao
2008-05-28 18:55 ` Jan Kara
2008-05-29 0:15 ` Mingming Cao
2008-05-29 0:16 ` [PATCH][take 5] " Mingming Cao
2008-05-29 0:18 ` [PATCH][take 5] JBD2: " Mingming Cao
2008-05-30 6:24 ` Aneesh Kumar K.V
2008-05-30 15:17 ` Mingming Cao
2008-05-21 23:38 ` [PATCH 1/2][TAKE3] JBD: " Mingming
2008-05-22 5:57 ` Andrew Morton
2008-05-21 23:39 ` [PATCH 2/2][TAKE3] JBD2: " Mingming
2008-05-20 18:03 ` [PATCH -v2] JBD2: Fix race between journal " Mingming Cao
2008-05-16 21:01 ` [PATCH] JBD2: Fix DIO EIO error caused by race between " Mingming Cao
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