add new macro main ram

include/starpu_data.h

@@ -96,13 +96,15 @@ int starpu_data_request_allocation(starpu_data_handle_t handle, unsigned node);
 
 int starpu_data_prefetch_on_node(starpu_data_handle_t handle, unsigned node, unsigned async);
 
+#define STARPU_MAIN_RAM 0
 
 enum starpu_node_kind
 {
 	STARPU_UNUSED     = 0x00,
 	STARPU_CPU_RAM    = 0x01,
 	STARPU_CUDA_RAM   = 0x02,
-	STARPU_OPENCL_RAM = 0x03
+	STARPU_OPENCL_RAM = 0x03,
+	STARPU_DISK_RAM   = 0x04
 };
 
 unsigned starpu_worker_get_memory_node(unsigned workerid);