From mboxrd@z Thu Jan  1 00:00:00 1970
From: keith.busch@intel.com (Keith Busch)
Date: Thu, 11 Feb 2016 17:00:12 +0000
Subject: [PATCH for-4.5 07/13] NVMe: Requeue requests on suspended queues
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On Thu, Feb 11, 2016@04:47:31PM +0000, Wenbo Wang wrote:
> If adding synchronize_rcu and blk_sync_queue, I guess this is not needed.

That was to sync IO tasks to make sure they saw the h/w cxt STOPPED
flag. We still need to restart those queues at some point to flush queued
requests to completion, and this patch is just prepping for that.

I used "blk_queue_dying" in a previous patch series. I went going back
and forth on using that criteria. SCSI has device states, so trying to
apply those ideas to namespaces.