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From: Ming Lei <ming.lei@redhat.com>
To: Martin Steigerwald <martin@lichtvoll.de>
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>,
	linux-kernel@vger.kernel.org, Hannes Reinecke <hare@suse.com>
Subject: Re: [PATCH V7 0/6] block/scsi: safe SCSI quiescing
Date: Sat, 30 Sep 2017 17:51:58 +0800	[thread overview]
Message-ID: <20170930095157.GA28985@ming.t460p> (raw)
In-Reply-To: <8017332.HWsC7yeG6s@merkaba>

Hi Martin,

On Sat, Sep 30, 2017 at 11:47:10AM +0200, Martin Steigerwald wrote:
> Hi Ming.
> 
> Ming Lei - 30.09.17, 14:12:
> > Please consider this patchset for V4.15, and it fixes one
> > kind of long-term I/O hang issue in either block legacy path
> > or blk-mq.
> >
> > The current SCSI quiesce isn't safe and easy to trigger I/O deadlock.
> 
> Isn�t that material for -stable as well?

Yeah, the patch 6 is CCed to -stable.

> 
> I�d love to see this go into 4.14. Especially as its an LTS release.

I am fine with either 4.14 or 4.15, and it is up to Jens.

Thanks
Ming

WARNING: multiple messages have this Message-ID (diff)
From: Ming Lei <ming.lei@redhat.com>
To: Martin Steigerwald <martin@lichtvoll.de>
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>,
	linux-kernel@vger.kernel.org, Hannes Reinecke <hare@suse.com>
Subject: Re: [PATCH V7 0/6] block/scsi: safe SCSI quiescing
Date: Sat, 30 Sep 2017 17:51:58 +0800	[thread overview]
Message-ID: <20170930095157.GA28985@ming.t460p> (raw)
In-Reply-To: <8017332.HWsC7yeG6s@merkaba>

Hi Martin,

On Sat, Sep 30, 2017 at 11:47:10AM +0200, Martin Steigerwald wrote:
> Hi Ming.
> 
> Ming Lei - 30.09.17, 14:12:
> > Please consider this patchset for V4.15, and it fixes one
> > kind of long-term I/O hang issue in either block legacy path
> > or blk-mq.
> >
> > The current SCSI quiesce isn't safe and easy to trigger I/O deadlock.
> 
> Isn´t that material for -stable as well?

Yeah, the patch 6 is CCed to -stable.

> 
> I´d love to see this go into 4.14. Especially as its an LTS release.

I am fine with either 4.14 or 4.15, and it is up to Jens.

Thanks
Ming

  reply	other threads:[~2017-09-30  9:52 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-30  6:12 [PATCH V7 0/6] block/scsi: safe SCSI quiescing Ming Lei
2017-09-30  6:12 ` [PATCH V7 1/6] blk-mq: only run hw queues for blk-mq Ming Lei
2017-10-02 13:31   ` Christoph Hellwig
2017-09-30  6:12 ` [PATCH V7 2/6] block: tracking request allocation with q_usage_counter Ming Lei
2017-10-02 13:32   ` Christoph Hellwig
2017-10-02 16:01   ` Bart Van Assche
2017-10-02 16:01     ` Bart Van Assche
2017-09-30  6:12 ` [PATCH V7 3/6] block: pass flags to blk_queue_enter() Ming Lei
2017-10-02 13:40   ` Christoph Hellwig
2017-10-03  7:21     ` Ming Lei
2017-09-30  6:12 ` [PATCH V7 4/6] block: prepare for passing RQF_PREEMPT to request allocation Ming Lei
2017-10-02 13:45   ` Christoph Hellwig
2017-09-30  6:12 ` [PATCH V7 5/6] block: support PREEMPT_ONLY Ming Lei
2017-10-02 13:50   ` Christoph Hellwig
2017-10-03  8:22     ` Ming Lei
2017-10-02 16:27   ` Bart Van Assche
2017-10-02 16:27     ` Bart Van Assche
2017-10-03  8:13     ` Ming Lei
2017-09-30  6:12 ` [PATCH V7 6/6] SCSI: set block queue at preempt only when SCSI device is put into quiesce Ming Lei
2017-10-02 13:52   ` Christoph Hellwig
2017-10-03  8:17     ` Ming Lei
2017-09-30  9:47 ` [PATCH V7 0/6] block/scsi: safe SCSI quiescing Martin Steigerwald
2017-09-30  9:47   ` Martin Steigerwald
2017-09-30  9:51   ` Ming Lei [this message]
2017-09-30  9:51     ` Ming Lei

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