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From: Tejun Heo <tj@kernel.org>
To: axboe@kernel.dk, tytso@mit.edu, djwong@us.ibm.com,
shli@kernel.org, neilb@suse.de, adilger.kernel@dilger.ca,
jack@suse.cz, snitzer@redhat.com, linux-kernel@vger.kernel.org,
kmannth@us.ibm.com, cmm@us.ibm.com, linux-ext4@vger.kernel.org,
rwheeler@redhat.com, hch@lst.de, josef@redhat.com
Subject: [PATCHSET] block: reimplement FLUSH/FUA to support merge
Date: Fri, 21 Jan 2011 16:59:55 +0100 [thread overview]
Message-ID: <1295625598-15203-1-git-send-email-tj@kernel.org> (raw)
Hello,
This patchset reimplements (yeah, once more) so that FLUSH/FUA
requests can be merged. This is inspired by Darrick's patches to
merge multiple zero-data flushes which helps workloads with highly
concurrent fsync requests.
For more information, please read the patch description on the third
patch.
0001-block-add-REQ_FLUSH_SEQ.patch
0002-block-improve-flush-bio-completion.patch
0003-block-reimplement-FLUSH-FUA-to-support-merge.patch
0001-0002 prepare for the reimplementation. 0003 reimplements.
Tested on FLUSH+FUA, FLUSH, and no FLUSH configurations. Works pretty
solid for me. Darrick says that preliminary performance test looks
okay. Darrick, please use this version for further testing as I fixed
a few problems.
This patchset is based on 2.6.38-rc1 (2b1caf6e) and available in the
following git branch,
git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git block-flush-merge
and contains the following changes.
block/blk-core.c | 56 ++---
block/blk-flush.c | 441 +++++++++++++++++++++++++++++++---------------
block/blk.h | 12 -
block/elevator.c | 7
include/linux/blk_types.h | 2
include/linux/blkdev.h | 18 +
include/linux/elevator.h | 1
7 files changed, 355 insertions(+), 182 deletions(-)
Thanks.
--
tejun
next reply other threads:[~2011-01-21 16:00 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-21 15:59 Tejun Heo [this message]
2011-01-21 15:59 ` [PATCH 1/3] block: add REQ_FLUSH_SEQ Tejun Heo
2011-01-21 15:59 ` [PATCH 2/3] block: improve flush bio completion Tejun Heo
2011-01-21 15:59 ` [PATCH 3/3] block: reimplement FLUSH/FUA to support merge Tejun Heo
2011-01-21 18:56 ` Vivek Goyal
2011-01-21 19:19 ` Vivek Goyal
2011-01-23 10:25 ` Tejun Heo
2011-01-23 10:29 ` Tejun Heo
2011-01-24 20:31 ` Darrick J. Wong
2011-01-25 10:21 ` Tejun Heo
2011-01-25 11:39 ` Jens Axboe
2011-03-23 23:37 ` Darrick J. Wong
2011-01-25 22:56 ` Darrick J. Wong
2011-01-22 0:49 ` Mike Snitzer
2011-01-23 10:31 ` Tejun Heo
2011-01-25 20:46 ` Vivek Goyal
2011-01-25 21:04 ` Mike Snitzer
2011-01-23 10:48 ` [PATCH UPDATED " Tejun Heo
2011-01-25 20:41 ` [KNOWN BUGGY RFC PATCH 4/3] block: skip elevator initialization for flush requests Mike Snitzer
2011-01-25 21:55 ` Mike Snitzer
2011-01-26 5:27 ` [RFC PATCH 4/3] block: skip elevator initialization for flush requests -- was never BUGGY relative to upstream Mike Snitzer
2011-01-26 10:03 ` [KNOWN BUGGY RFC PATCH 4/3] block: skip elevator initialization for flush requests Tejun Heo
2011-01-26 10:05 ` Tejun Heo
2011-02-01 17:38 ` [RFC " Mike Snitzer
2011-02-01 18:52 ` Tejun Heo
2011-02-01 22:46 ` [PATCH v2 1/2] " Mike Snitzer
2011-02-02 21:51 ` Vivek Goyal
2011-02-02 22:06 ` Mike Snitzer
2011-02-02 22:55 ` [PATCH v3 1/2] block: skip elevator data " Mike Snitzer
2011-02-03 9:28 ` Tejun Heo
2011-02-03 14:48 ` [PATCH v4 " Mike Snitzer
2011-02-03 13:24 ` [PATCH v3 " Jens Axboe
2011-02-03 13:38 ` Tejun Heo
2011-02-04 15:04 ` Vivek Goyal
2011-02-04 15:08 ` Tejun Heo
2011-02-04 16:58 ` [PATCH v5 " Mike Snitzer
2011-02-03 14:54 ` [PATCH v3 " Mike Snitzer
2011-02-01 22:46 ` [PATCH v2 2/2] block: share request flush fields with elevator_private Mike Snitzer
2011-02-02 21:52 ` Vivek Goyal
2011-02-03 9:24 ` Tejun Heo
2011-02-11 10:08 ` Jens Axboe
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