From: Ming Lei <ming.lei@canonical.com>
To: Jens Axboe <axboe@kernel.dk>, linux-kernel@vger.kernel.org
Cc: linux-scsi@vger.kernel.org, Christoph Hellwig <hch@lst.de>
Subject: [PATCH 0/8] block: per-distpatch_queue flush machinery
Date: Tue, 9 Sep 2014 21:05:41 +0800 [thread overview]
Message-ID: <1410267949-21904-1-git-send-email-ming.lei@canonical.com> (raw)
Hi,
As recent discussion, especially suggested by Christoph, this patchset
implements per-distpatch_queue flush machinery, so that:
- current init_request and exit_request callbacks can
cover flush request too, then the ugly and buggy copying
way of initializing flush request's pdu can be fixed
- flushing performance gets improved in case of multi hw-queue
About 70% throughput improvement is observed in sync write/randwrite
over multi dispatch-queue virtio-blk, see details in commit log
of patch 8/8.
This patchset can be pulled from below tree too:
git://kernel.ubuntu.com/ming/linux.git v3.17-block-dev
block/blk-core.c | 11 +--
block/blk-flush.c | 239 +++++++++++++++++++++++++++++++++++++++---------
block/blk-mq.c | 27 +++---
block/blk-mq.h | 1 -
block/blk-sysfs.c | 4 +-
block/blk.h | 35 ++++++-
include/linux/blk-mq.h | 2 +
include/linux/blkdev.h | 10 +-
8 files changed, 251 insertions(+), 78 deletions(-)
Thanks,
--
Ming Lei
next reply other threads:[~2014-09-09 13:06 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-09 13:05 Ming Lei [this message]
2014-09-09 13:05 ` [PATCH 1/8] blk-mq: allocate flush_rq in blk_mq_init_flush() Ming Lei
2014-09-09 18:35 ` Christoph Hellwig
2014-09-09 13:05 ` [PATCH 2/8] block: introduce blk_init_flush and its pair Ming Lei
2014-09-09 18:36 ` Christoph Hellwig
2014-09-09 13:05 ` [PATCH 3/8] block: move flush initialized stuff to blk_flush_init Ming Lei
2014-09-09 18:37 ` Christoph Hellwig
2014-09-09 13:05 ` [PATCH 4/8] block: avoid to use q->flush_rq directly Ming Lei
2014-09-09 18:38 ` Christoph Hellwig
2014-09-09 13:05 ` [PATCH 5/8] block: introduce blk_flush_queue to drive flush machinery Ming Lei
2014-09-09 18:43 ` Christoph Hellwig
2014-09-09 18:55 ` Jens Axboe
2014-09-10 1:25 ` Ming Lei
2014-09-10 1:23 ` Ming Lei
2014-09-09 13:05 ` [PATCH 6/8] block: flush: avoid to figure out flush queue unnecessarily Ming Lei
2014-09-09 18:44 ` Christoph Hellwig
2014-09-09 13:05 ` [PATCH 7/8] block: introduce 'blk_mq_ctx' parameter to blk_get_flush_queue Ming Lei
2014-09-09 13:05 ` [PATCH 8/8] blk-mq: support per-distpatch_queue flush machinery Ming Lei
2014-09-09 18:48 ` Christoph Hellwig
2014-09-10 1:40 ` Ming Lei
2014-09-10 19:02 ` Christoph Hellwig
2014-09-10 23:53 ` Ming Lei
2014-09-09 15:20 ` [PATCH 0/8] block: " Christoph Hellwig
2014-09-09 15:38 ` Ming Lei
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