Re: [Xen-devel] [PATCH v2] Persistent grant maps for xen blkdrivers

From: Jan Beulich
Date: Mon Sep 24 2012 - 07:36:35 EST


>>> On 21.09.12 at 17:52, Oliver Chick <oliver.chick@xxxxxxxxxx> wrote:
> Changes since v1:
>
> * Maximum number of persistent grants per device now 64, rather than
> 256, as this is the actual maxmimum request in a (1 page) ring.

As said previously, I don't see why this needs to have a separate
#define at all - it's simply __RING_SIZE(). No adding this would
also imply that - apart from perhaps documenting the new xenstore
nodes - io/blkif.h would need changing at all (which otherwise would
require a hypervisor side patch to be submitted too).

Jan

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