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Date:	Thu, 3 Apr 2014 09:36:31 +0200
From:	Christoph Hellwig <>
To:	Matias Bjorling <>
Cc:	Jens Axboe <>,,
Subject: Re: [RFC] blk-mq: support for shared tags

On Wed, Apr 02, 2014 at 09:10:12PM -0700, Matias Bjorling wrote:
> For the nvme driver, there's a single admin queue, which is outside
> blk-mq's control, and the X normal queues. Should we allow the shared
> tags structure to be used (get/put) for the admin queue, without
> initializing blk-mq? or should the drivers simply implement their own
> tags for their admin queue?

I'd still create a request_queue for the internal queue, just not register
a block device for it.  For example SCSI sets up queues for each LUN
found, but only a subset actually is exposed as a block device.

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