From: Keith Busch <keith.busch@intel.com>
To: Scott Bauer <scott.bauer@intel.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Sagi Grimberg <sagi@grimberg.me>,
linux-nvme@lists.infradead.org, Rafael.Antognolli@intel.com,
axboe@fb.com, linux-block@vger.kernel.org,
jonathan.derrick@intel.com, j.naumann@fu-berlin.de
Subject: Re: [RFC PATCH 5/6] nvme: Add unlock_from_suspend
Date: Thu, 10 Nov 2016 18:23:12 -0500 [thread overview]
Message-ID: <20161110232312.GG4929@localhost.localdomain> (raw)
In-Reply-To: <20161110230130.GA1923@sbauer-Z170X-UD5>
On Thu, Nov 10, 2016 at 04:01:31PM -0700, Scott Bauer wrote:
> On Tue, Nov 01, 2016 at 06:57:05AM -0700, Christoph Hellwig wrote:
> > blk_execute_rq_nowait is the API to use - blk_mq_insert_request isn't
> > even exported.
>
> I remember now, after I changed it to use rq_nowait, why we added this wrapper
> function and used blk_mq_insert_request.
>
> When we dispatch opal commands down to the controller we're doing so in an IRQ,
> so if we use rq_nowait, we lockup.
In this case can we push the submission off to a work queue and use
blk_mq_insert_rq_nowait?
WARNING: multiple messages have this Message-ID (diff)
From: keith.busch@intel.com (Keith Busch)
Subject: [RFC PATCH 5/6] nvme: Add unlock_from_suspend
Date: Thu, 10 Nov 2016 18:23:12 -0500 [thread overview]
Message-ID: <20161110232312.GG4929@localhost.localdomain> (raw)
In-Reply-To: <20161110230130.GA1923@sbauer-Z170X-UD5>
On Thu, Nov 10, 2016@04:01:31PM -0700, Scott Bauer wrote:
> On Tue, Nov 01, 2016@06:57:05AM -0700, Christoph Hellwig wrote:
> > blk_execute_rq_nowait is the API to use - blk_mq_insert_request isn't
> > even exported.
>
> I remember now, after I changed it to use rq_nowait, why we added this wrapper
> function and used blk_mq_insert_request.
>
> When we dispatch opal commands down to the controller we're doing so in an IRQ,
> so if we use rq_nowait, we lockup.
In this case can we push the submission off to a work queue and use
blk_mq_insert_rq_nowait?
next prev parent reply other threads:[~2016-11-10 23:12 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-31 21:58 [RFC PATCH 0/6] Sed Opal Scott Bauer
2016-10-31 21:58 ` Scott Bauer
2016-10-31 21:58 ` [RFC PATCH 1/6] Include: Add definitions for sed Scott Bauer
2016-10-31 21:58 ` Scott Bauer
2016-10-31 21:58 ` [RFC PATCH 2/6] lib: Add Sed-opal library Scott Bauer
2016-10-31 21:58 ` Scott Bauer
2016-11-01 18:56 ` Jon Derrick
2016-11-01 18:56 ` Jon Derrick
2016-10-31 21:58 ` [RFC PATCH 3/6] lib: Add Sed to Kconfig and Makefile Scott Bauer
2016-10-31 21:58 ` Scott Bauer
2016-10-31 21:58 ` [RFC PATCH 4/6] include: Add sec_ops to block device operations Scott Bauer
2016-10-31 21:58 ` Scott Bauer
2016-10-31 21:58 ` [RFC PATCH 5/6] nvme: Add unlock_from_suspend Scott Bauer
2016-10-31 21:58 ` Scott Bauer
2016-11-01 8:18 ` Sagi Grimberg
2016-11-01 8:18 ` Sagi Grimberg
2016-11-01 13:57 ` Christoph Hellwig
2016-11-01 13:57 ` Christoph Hellwig
2016-11-01 14:40 ` Scott Bauer
2016-11-01 14:40 ` Scott Bauer
2016-11-10 23:01 ` Scott Bauer
2016-11-10 23:01 ` Scott Bauer
2016-11-10 23:23 ` Keith Busch [this message]
2016-11-10 23:23 ` Keith Busch
2016-11-10 23:19 ` Christoph Hellwig
2016-11-10 23:19 ` Christoph Hellwig
2016-11-07 18:45 ` Keith Busch
2016-11-07 18:45 ` Keith Busch
2016-11-07 18:33 ` Scott Bauer
2016-11-07 18:33 ` Scott Bauer
2016-10-31 21:58 ` [RFC PATCH 6/6] block: ioctl: Wire up Sed to block ioctls Scott Bauer
2016-10-31 21:58 ` Scott Bauer
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