Someone

	if (!deform_only) {
		
		/* Will use later to speed up subsurf/derivedmesh */
	
		int tot_dm_face = dm__->getNumEdges(dm__);
		int totface = me->totface;
		int *origindex = DM_get_face_data_layer(dm__, CD_ORIGINDEX);
		int i;
		LinkNode *node, *node_array;
		
		node= MEM_callocN(sizeof(LinkNode)*tot_dm_face, "faceindicies");
		node_array = MEM_callocN(sizeof(LinkNode **)*totface, "faceindicies");
		
		for (i=0; i < tot_dm_face; i++, origindex++, node++) {
			node->link = (void *)i; // or use the index?
			if (node_array + (*origindex)) {
				node_array[*origindex]->next = node;
			} else {
				node_array[*origindex] = *node;
			}
		}
	}