vmw_cotable_scrub  563 drivers/gpu/drm/vmwgfx/vmwgfx_context.c 		WARN_ON(vmw_cotable_scrub(res, readback));
vmw_cotable_scrub 1307 drivers/gpu/drm/vmwgfx/vmwgfx_drv.h extern int vmw_cotable_scrub(struct vmw_resource *res, bool readback);