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Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been suspended

From Keith Busch <keith.busch@intel.com>
Newsgroups linux.kernel
Subject Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been suspended
Date 2016-02-03 17:40 +0100
Message-ID <qY8Df-4ol-1@gated-at.bofh.it> (permalink)
References <qXoTM-4WL-13@gated-at.bofh.it> <qXpZw-5Jg-1@gated-at.bofh.it> <qXIza-2Za-31@gated-at.bofh.it> <qY6UO-3c5-9@gated-at.bofh.it> <qY8Df-4ol-3@gated-at.bofh.it>
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On Wed, Feb 03, 2016 at 04:35:03PM +0000, Wenbo Wang wrote:
> For async io (executed by run_work worker) it should work. However for sync io in blk_mq_run_hw_queue, this seems not help, there is still a window.

Alright, for lack of a better way to sync a stopped queue, the driver's
indication looks like the best we can do at this point.

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Thread

[PATCH] NVMe: do not touch sq door bell if nvmeq has been suspended Wenbo Wang <mail_weber_wang@163.com> - 2016-02-01 16:50 +0100
  RE: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended "Busch, Keith" <keith.busch@intel.com> - 2016-02-01 17:00 +0100
    RE: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended Wenbo Wang <wenbo.wang@memblaze.com> - 2016-02-01 17:20 +0100
  Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended Jens Axboe <axboe@fb.com> - 2016-02-01 18:00 +0100
    Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended Sagi Grimberg <sagig@dev.mellanox.co.il> - 2016-02-02 13:50 +0100
      Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended Keith Busch <keith.busch@intel.com> - 2016-02-02 15:30 +0100
        Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended Sagi Grimberg <sagig@dev.mellanox.co.il> - 2016-02-02 15:40 +0100
          Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended Keith Busch <keith.busch@intel.com> - 2016-02-02 15:50 +0100
            Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended Sagi Grimberg <sagig@dev.mellanox.co.il> - 2016-02-02 18:30 +0100
    Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended Keith Busch <keith.busch@intel.com> - 2016-02-02 18:30 +0100
    Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended Keith Busch <keith.busch@intel.com> - 2016-02-03 15:50 +0100
      Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended Keith Busch <keith.busch@intel.com> - 2016-02-03 17:40 +0100
        Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended Sagi Grimberg <sagig@dev.mellanox.co.il> - 2016-02-07 14:50 +0100
        Re: [PATCH] NVMe: do not touch sq door bell if nvmeq has been  suspended Keith Busch <keith.busch@intel.com> - 2016-02-08 16:10 +0100

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