From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri, 7 Dec 2012 20:37:07 +0000 (+0000)
Subject: drm/i915: Preallocate the drm_mm_node prior to manipulating the GTT drm_mm manager
X-Git-Tag: v3.8-rc2~13^2~7^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dc9dd7a20fde95aa81a8307cde79c2dff9f83f3d;p=pandora-kernel.git

drm/i915: Preallocate the drm_mm_node prior to manipulating the GTT drm_mm manager

As we may reap neighbouring objects in order to free up pages for
allocations, we need to be careful not to allocate in the middle of the
drm_mm manager. To accomplish this, we can simply allocate the
drm_mm_node up front and then use the combined search & insert
drm_mm routines, reducing our code footprint in the process.

Fixes (partially) i-g-t/gem_tiled_swapping

Reported-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
[danvet: Again fixup atomic bikeshed.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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