linux-kernel - Re: [PATCH RFC 3/4] xen, blkfront: introduce support for multiple hw queues

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Message-ID: <53F73D29.4020401@citrix.com>
Date:	Fri, 22 Aug 2014 13:52:57 +0100
From:	David Vrabel <david.vrabel@...rix.com>
To:	Arianna Avanzini <avanzini.arianna@...il.com>,
	<konrad.wilk@...cle.com>, <boris.ostrovsky@...cle.com>,
	<xen-devel@...ts.xenproject.org>, <linux-kernel@...r.kernel.org>
CC:	<bob.liu@...cle.com>, <felipe.franciosi@...rix.com>, <axboe@...com>
Subject: Re: [PATCH RFC 3/4] xen, blkfront: introduce support for multiple
 hw queues

On 22/08/14 12:20, Arianna Avanzini wrote:
> This commit introduces in xen-blkfront actual support for multiple
> hardware queues. The number of available hardware queues is gathered
> from the backend via XenStore; in case the expected XenStore key
> is not available, the frontend defaults to a single I/O ring.

Can you split this into a part that reactors blkfront handle multiple
queues and the part that adds the XenStore negotiation for this?

You will also need to to add documentation for the XenStore keys to the
blkif.h header in Xen.

David
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