From: keith.busch@intel.com (Keith Busch)
Subject: [PATCH 2/4] NVMe: Sync stopped queues with block layer
Date: Thu, 4 Feb 2016 16:00:44 +0000 [thread overview]
Message-ID: <20160204160044.GD28747@localhost.localdomain> (raw)
In-Reply-To: <56B374D3.9010003@dev.mellanox.co.il>
On Thu, Feb 04, 2016@05:57:07PM +0200, Sagi Grimberg wrote:
>
> >Make sure no work will submit requests to a stopped h/w queue.
>
> Not sure what that buys us, and it's not documented. But
> I don't mind having it. Can you provide a better explanation
> why it's added?
This was trying to close that gap with requests queueing on stopped h/w
queues and writing the queue doorbell. It works for requests through
the kblock_workqueue, but that's not always the case, so it's only a
partial solution.
next prev parent reply other threads:[~2016-02-04 16:00 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-03 16:05 [PATCH 0/4] NVMe: Surprise removal fixes Keith Busch
2016-02-03 16:05 ` [PATCH 1/4] NVMe: Fix io incapable return values Keith Busch
2016-02-04 15:55 ` Sagi Grimberg
2016-02-08 18:10 ` Christoph Hellwig
2016-02-03 16:05 ` [PATCH 2/4] NVMe: Sync stopped queues with block layer Keith Busch
2016-02-04 15:57 ` Sagi Grimberg
2016-02-04 16:00 ` Keith Busch [this message]
2016-02-08 18:11 ` Christoph Hellwig
2016-02-03 16:05 ` [PATCH 3/4] NVMe: Surprise removal fixes Keith Busch
2016-02-08 18:16 ` Christoph Hellwig
2016-02-08 18:38 ` Keith Busch
2016-02-08 23:48 ` Keith Busch
2016-02-03 16:05 ` [PATCH 4/4] blk-mq: End unstarted requests on dying queue Keith Busch
2016-02-04 15:59 ` Sagi Grimberg
2016-02-08 18:13 ` Christoph Hellwig
2016-02-04 3:25 ` [PATCH 0/4] NVMe: Surprise removal fixes Wenbo Wang
2016-02-04 15:52 ` Keith Busch
2016-02-04 15:55 ` Sagi Grimberg
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