From: Tejun Heo <tj@kernel.org>
To: Ming Lei <ming.lei@redhat.com>
Cc: Jens Axboe <axboe@fb.com>,
linux-block@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>,
linux-scsi@vger.kernel.org,
"Martin K . Petersen" <martin.petersen@oracle.com>,
"James E . J . Bottomley" <jejb@linux.vnet.ibm.com>,
Bart Van Assche <bart.vanassche@sandisk.com>,
Oleksandr Natalenko <oleksandr@natalenko.name>,
Johannes Thumshirn <jthumshirn@suse.de>,
Cathy Avery <cavery@redhat.com>,
Martin Steigerwald <martin@lichtvoll.de>,
linux-kernel@vger.kernel.org, Hannes Reinecke <hare@suse.com>,
Bart Van Assche <Bart.VanAssche@wdc.com>
Subject: Re: [PATCH V8 5/8] percpu-refcount: introduce __percpu_ref_tryget_live
Date: Tue, 3 Oct 2017 07:14:59 -0700 [thread overview]
Message-ID: <20171003141459.GI3301751@devbig577.frc2.facebook.com> (raw)
In-Reply-To: <20171003140406.26060-6-ming.lei@redhat.com>
Hello,
On Tue, Oct 03, 2017 at 10:04:03PM +0800, Ming Lei wrote:
> Block layer need to call this function after holding
> rcu lock in a real hot path, so introduce this helper.
The patch description is too anemic. It doesn't even describe what
changes are being made, let alone justifying them.
Thanks.
--
tejun
next prev parent reply other threads:[~2017-10-03 14:14 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-03 14:03 [PATCH V8 0/8] block/scsi: safe SCSI quiescing Ming Lei
2017-10-03 14:03 ` [PATCH V8 1/8] blk-mq: only run hw queues for blk-mq Ming Lei
2017-10-03 14:04 ` [PATCH V8 2/8] block: tracking request allocation with q_usage_counter Ming Lei
2017-10-03 14:04 ` [PATCH V8 3/8] block: Convert RQF_PREEMPT into REQ_PREEMPT Ming Lei
2017-10-03 14:04 ` [PATCH V8 4/8] block: pass 'op' to blk_queue_enter() Ming Lei
2017-10-03 14:04 ` [PATCH V8 5/8] percpu-refcount: introduce __percpu_ref_tryget_live Ming Lei
2017-10-03 14:14 ` Tejun Heo [this message]
2017-10-03 19:20 ` Ming Lei
2017-10-03 19:31 ` Tejun Heo
2017-10-03 18:40 ` Bart Van Assche
2017-10-03 19:24 ` Ming Lei
2017-10-03 14:04 ` [PATCH V8 6/8] blk-mq: return if queue is frozen via current blk_freeze_queue_start Ming Lei
2017-10-03 14:04 ` [PATCH V8 7/8] block: support PREEMPT_ONLY Ming Lei
2017-10-03 14:04 ` [PATCH V8 8/8] SCSI: set block queue at preempt only when SCSI device is put into quiesce Ming Lei
2017-10-03 18:27 ` [PATCH V8 0/8] block/scsi: safe SCSI quiescing Oleksandr Natalenko
2017-11-07 12:32 ` Oleksandr Natalenko
2017-11-07 13:17 ` Ming Lei
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