[PATCH 0/9] Introduce blk_quiesce_queue() and blk_resume_queue()

Laurence Oberman loberman at redhat.com
Tue Oct 11 09:27:09 PDT 2016

----- Original Message -----
> From: "Bart Van Assche" <bart.vanassche at sandisk.com>
> To: "Jens Axboe" <axboe at fb.com>
> Cc: "Christoph Hellwig" <hch at lst.de>, "James Bottomley" <jejb at linux.vnet.ibm.com>, "Martin K. Petersen"
> <martin.petersen at oracle.com>, "Mike Snitzer" <snitzer at redhat.com>, "Doug Ledford" <dledford at redhat.com>, "Keith
> Busch" <keith.busch at intel.com>, linux-block at vger.kernel.org, linux-scsi at vger.kernel.org, linux-rdma at vger.kernel.org,
> linux-nvme at lists.infradead.org
> Sent: Monday, September 26, 2016 2:25:54 PM
> Subject: [PATCH 0/9] Introduce blk_quiesce_queue() and blk_resume_queue()
> Hello Jens,
> Multiple block drivers need the functionality to stop a request queue
> and to wait until all ongoing request_fn() / queue_rq() calls have
> finished without waiting until all outstanding requests have finished.
> Hence this patch series that introduces the blk_quiesce_queue() and
> blk_resume_queue() functions. The dm-mq, SRP and nvme patches in this
> patch series are three examples of where these functions are useful.
> These patches apply on top of the September 21 version of your
> for-4.9/block branch. The individual patches in this series are:
> 0001-blk-mq-Introduce-blk_mq_queue_stopped.patch
> 0002-dm-Fix-a-race-condition-related-to-stopping-and-star.patch
> 0003-RFC-nvme-Use-BLK_MQ_S_STOPPED-instead-of-QUEUE_FLAG_.patch
> 0004-block-Move-blk_freeze_queue-and-blk_unfreeze_queue-c.patch
> 0005-block-Extend-blk_freeze_queue_start-to-the-non-blk-m.patch
> 0006-block-Rename-mq_freeze_wq-and-mq_freeze_depth.patch
> 0007-blk-mq-Introduce-blk_quiesce_queue-and-blk_resume_qu.patch
> 0008-SRP-transport-Port-srp_wait_for_queuecommand-to-scsi.patch
> 0009-RFC-nvme-Fix-a-race-condition.patch
> Thanks,
> Bart.
> --
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I took Bart's latest patches from his tree and tested all the SRP/RDMA and as many of the nvme tests.

Everything is passing my tests, including SRP port resets etc.
The nvme tests were all on a small intel nvme card.

Tested-by: Laurence Oberman <loberman at redhat.com>

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