From: Tejun Heo <tj@kernel.org>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-kernel@vger.kernel.org, kmo@daterainc.com, nab@linux-iscsi.org
Subject: Re: [PATCHSET block/for-next] blk-mq: update freezing
Date: Sat, 28 Jun 2014 08:13:14 -0400 [thread overview]
Message-ID: <20140628121314.GD10829@htj.dyndns.org> (raw)
In-Reply-To: <53A1BC0E.8040704@kernel.dk>
On Wed, Jun 18, 2014 at 09:19:26AM -0700, Jens Axboe wrote:
> > percpu/for-3.17 6fbc07bbe2b5 ("percpu: invoke __verify_pcpu_ptr() from the generic part of accessors and operations")
> >+[1] [PATCHSET percpu/for-3.17] percpu: implement percpu_ref_reinit()
> >
> >and available in the following git branch.
> >
> > git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git review-mq-percpu_ref
> >
> > block/blk-core.c | 13 ++++---
> > block/blk-mq.c | 90 ++++++++++++++++---------------------------------
> > block/blk-mq.h | 2 -
> > block/blk-sysfs.c | 2 -
> > include/linux/blkdev.h | 4 +-
> > 5 files changed, 44 insertions(+), 67 deletions(-)
>
> Thanks Tejun, this looks pretty good. I was worried the tryget_live() would
> be too expensive, but that looks not to be the case. I like the cleanups to
> using a general mechanism. I'll run this through some functional and
> performance testing.
FYI, the percpu_ref changes needed by this patchset are applied to
percpu/for-3.17 branch which is stable and can be pulled into the
block tree.
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git for-3.17
Thanks.
--
tejun
next prev parent reply other threads:[~2014-06-28 12:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-18 15:21 Tejun Heo
2014-06-18 15:21 ` [PATCH 1/6] blk-mq: make blk_mq_stop_hw_queue() reliably block queue processing Tejun Heo
2014-06-19 10:10 ` Ming Lei
2014-06-19 13:12 ` Tejun Heo
2014-06-18 15:21 ` [PATCH 2/6] blk-mq: fix a memory ordering bug in blk_mq_queue_enter() Tejun Heo
2014-06-18 15:21 ` [PATCH 3/6] block, blk-mq: draining can't be skipped even if bypass_depth was non-zero Tejun Heo
2014-06-18 15:21 ` [PATCH 4/6] blk-mq: decouble blk-mq freezing from generic bypassing Tejun Heo
2014-06-18 15:21 ` [PATCH 5/6] blk-mq: collapse __blk_mq_drain_queue() into blk_mq_freeze_queue() Tejun Heo
2014-06-18 15:21 ` [PATCH 6/6] blk-mq: use percpu_ref for mq usage count Tejun Heo
2014-06-18 16:19 ` [PATCHSET block/for-next] blk-mq: update freezing Jens Axboe
2014-06-28 12:13 ` Tejun Heo [this message]
2014-06-28 14:29 ` Jens Axboe
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