hammer_modify_node
hammer_modify_node(trans, node, &(node)->ondisk->field, \
hammer_modify_node(cursor->trans, cursor->node,
hammer_modify_node(cursor->trans, node, &elm->mirror_tid,
hammer_modify_node(cursor2.trans, cursor2.node,
hammer_modify_node(trans, node, elm, sizeof(*elm));
hammer_modify_node(cursor->trans, cursor->node,
hammer_modify_node(cursor->trans, cursor->parent,