Re: [PATCH V7 0/6] block/scsi: safe SCSI quiescing

From	Ming Lei <ming.lei@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH V7 0/6] block/scsi: safe SCSI quiescing
Date	2017-09-30 12:00 +0200
Message-ID	<uvmIV-2qS-5@gated-at.bofh.it> (permalink)
References	<uvji1-nu-3@gated-at.bofh.it> <uvmzg-2mW-9@gated-at.bofh.it>
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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

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[PATCH V7 0/6] block/scsi: safe SCSI quiescing Ming Lei <ming.lei@redhat.com> - 2017-09-30 08:20 +0200
  [PATCH V7 5/6] block: support PREEMPT_ONLY Ming Lei <ming.lei@redhat.com> - 2017-09-30 08:20 +0200
    Re: [PATCH V7 5/6] block: support PREEMPT_ONLY Bart Van Assche <Bart.VanAssche@wdc.com> - 2017-10-02 22:50 +0200
  [PATCH V7 2/6] block: tracking request allocation with q_usage_counter Ming Lei <ming.lei@redhat.com> - 2017-09-30 08:20 +0200
    Re: [PATCH V7 2/6] block: tracking request allocation with  q_usage_counter Christoph Hellwig <hch@infradead.org> - 2017-10-02 22:50 +0200
    Re: [PATCH V7 2/6] block: tracking request allocation with  q_usage_counter Bart Van Assche <Bart.VanAssche@wdc.com> - 2017-10-02 22:50 +0200
  [PATCH V7 4/6] block: prepare for passing RQF_PREEMPT to request allocation Ming Lei <ming.lei@redhat.com> - 2017-09-30 08:20 +0200
  Re: [PATCH V7 0/6] block/scsi: safe SCSI quiescing Martin Steigerwald <martin@lichtvoll.de> - 2017-09-30 11:50 +0200
    Re: [PATCH V7 0/6] block/scsi: safe SCSI quiescing Ming Lei <ming.lei@redhat.com> - 2017-09-30 12:00 +0200

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