From: Roger Pau Monne <roger.pau@citrix.com>
Date: Wed, 17 Apr 2013 18:19:00 +0000 (+0200)
Subject: xen-blkback: expand map/unmap functions
X-Git-Tag: v3.11-rc3~32^2~9^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31552ee32df89f97a61766cee51b8dabb1ae3f4f;p=pandora-kernel.git

xen-blkback: expand map/unmap functions

Preparatory change for implementing indirect descriptors. Change
xen_blkbk_{map/unmap} in order to be able to map/unmap a random amount
of grants (previously it was limited to
BLKIF_MAX_SEGMENTS_PER_REQUEST). Also, remove the usage of pending_req
in the map/unmap functions, so we can map/unmap grants without needing
to pass a pending_req.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xen.org
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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