Redirect User to login page

Here is from my previous project. The function is hooked into the template_redirect action. Inside the function there are 2 conditionals. The first is the the one that will redirect logged in user away from the login page. And the other one is to redirect non logged in user to the login page.

// add a redirect for logged out user
add_action('template_redirect', 'redirect_user');

function redirect_user(){
    global $current_user;
    if (is_page('login-page-for-non-logged-in-user') && is_user_logged_in()){
        $return_url = get_bloginfo('url');
        wp_redirect($return_url);
    }
    // this part is untested
    if (!is_page('login-page-for-non-logged-in-user') && !is_user_logged_in()){
        $return_url = get_bloginfo('url');
        wp_redirect($return_url);
    }
    // end of untested part
}