From: Hannes Reinecke <hare@suse.de>
To: Ming Lei <ming.lei@redhat.com>, Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, linux-nvme@lists.infradead.org,
Christoph Hellwig <hch@lst.de>, Keith Busch <kbusch@kernel.org>
Cc: Johannes Thumshirn <Johannes.Thumshirn@wdc.com>,
Sagi Grimberg <sagi@grimberg.me>, Chao Leng <lengchao@huawei.com>,
Bart Van Assche <bvanassche@acm.org>
Subject: Re: [PATCH V5 1/4] block: use test_and_{clear|test}_bit to set/clear QUEUE_FLAG_QUIESCED
Date: Fri, 11 Sep 2020 08:03:23 +0200 [thread overview]
Message-ID: <18b0ac79-73bb-66c4-3a3b-2263f7cd6c24@suse.de> (raw)
In-Reply-To: <20200911024117.62480-2-ming.lei@redhat.com>
On 9/11/20 4:41 AM, Ming Lei wrote:
> Prepare for replacing srcu with percpu-refcount for implementing queue
> quiesce.
>
> The following patch needs to avoid duplicated quiesce action for
> BLK_MQ_F_BLOCKING, so use test_and_{clear|test}_bit to set/clear
> QUEUE_FLAG_QUIESCED.
>
> Signed-off-by: Ming Lei <ming.lei@redhat.com>
> Cc: Sagi Grimberg <sagi@grimberg.me>
> Cc: Bart Van Assche <bvanassche@acm.org>
> Cc: Johannes Thumshirn <Johannes.Thumshirn@wdc.com>
> Cc: Chao Leng <lengchao@huawei.com>
> ---
> block/blk-core.c | 13 +++++++++++++
> block/blk-mq.c | 11 ++++++++---
> block/blk.h | 2 ++
> 3 files changed, 23 insertions(+), 3 deletions(-)
>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@suse.de +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer
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next prev parent reply other threads:[~2020-09-11 6:03 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-11 2:41 [PATCH V5 0/4] blk-mq: implement queue quiesce via percpu_ref for BLK_MQ_F_BLOCKING Ming Lei
2020-09-11 2:41 ` [PATCH V5 1/4] block: use test_and_{clear|test}_bit to set/clear QUEUE_FLAG_QUIESCED Ming Lei
2020-09-11 6:03 ` Hannes Reinecke [this message]
2020-09-11 2:41 ` [PATCH V5 2/4] blk-mq: implement queue quiesce via percpu_ref for BLK_MQ_F_BLOCKING Ming Lei
2020-09-11 2:41 ` [PATCH V5 3/4] blk-mq: add tagset quiesce interface Ming Lei
2020-09-11 2:41 ` [PATCH V5 4/4] nvme: use blk_mq_[un]quiesce_tagset Ming Lei
2020-09-11 17:29 ` [PATCH V5 0/4] blk-mq: implement queue quiesce via percpu_ref for BLK_MQ_F_BLOCKING Sagi Grimberg
2020-09-11 18:34 ` Sagi Grimberg
2020-09-11 18:45 ` Jens Axboe
2020-09-11 23:28 ` Ming Lei
2020-09-11 17:33 ` Keith Busch
2020-09-11 18:05 ` Jens Axboe
2020-09-11 19:12 ` Sagi Grimberg
2020-09-11 19:14 ` Jens Axboe
2020-09-14 3:05 ` Ming Lei
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