From: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Date: Wed, 9 Apr 2014 14:19:30 +0000 (+0200)
Subject: drm/nouveau: use shared fences for readable objects
X-Git-Tag: fixes-against-v3.18-rc2~73^2~72^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=809e9447b92ffe1346b2d6ec390e212d5307f61c;p=pandora-kernel.git

drm/nouveau: use shared fences for readable objects

nouveau keeps track in userspace whether a buffer is being
written to or being read, but it doesn't use that information.

Change this to allow multiple readers on the same bo.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
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