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The scan state occupies a large proportion of the struct drm_mm and is rarely used and only contains temporary state. That makes it suitable to moving to its struct and onto the stack of the callers. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> [danvet: Fix up etnaviv to compile, was missing a BUG_ON.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>