From: hch@lst.de (Christoph Hellwig)
Subject: [PATCH] nvme/pci: Poll CQ on timeout
Date: Tue, 28 Feb 2017 15:10:17 +0100 [thread overview]
Message-ID: <20170228141017.GC20317@lst.de> (raw)
In-Reply-To: <1487977168-5347-1-git-send-email-keith.busch@intel.com>
On Fri, Feb 24, 2017@05:59:28PM -0500, Keith Busch wrote:
> If an IO timeout occurs, it's helpful to know if the controller did not
> post a completion or the driver missed an interrupt. While we never expect
> the latter, this patch will make it possible to tell the difference so
> we don't have to guess.
Do you have any good real use case for it? I mostly don't like it
becuase it ties us to polling for a specific tag, something I'd like
to change in the ->poll API.
next prev parent reply other threads:[~2017-02-28 14:10 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-24 22:59 [PATCH] nvme/pci: Poll CQ on timeout Keith Busch
2017-02-27 14:42 ` Sagi Grimberg
2017-02-28 14:10 ` Christoph Hellwig [this message]
2017-02-28 16:00 ` Keith Busch
2017-02-28 17:44 ` Jens Axboe
2017-04-20 8:56 ` Johannes Thumshirn
2017-04-20 14:20 ` Keith Busch
2017-04-20 15:45 ` Jens Axboe
2017-04-20 16:17 ` Sagi Grimberg
2017-04-20 16:28 ` Keith Busch
2017-04-20 16:31 ` Jens Axboe
2017-04-21 6:39 ` Christoph Hellwig
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