Each user is redirected to his personal Page!

I am a beginner with php…
Is possible that after the registration is automatically created a page that is visible only to the user and admin? I need to load for each user personal documents that no one else can see.

This code automatically creates a page for each registered user:

function my_create_page($user_id){
  $the_user = get_userdata($user_id);
  $new_user_name = $the_user->user_login;
  $my_post = array();
  $my_post['post_title'] = $new_user_name;
  $my_post['post_type'] = 'page';
  $my_post['comment_status'] = 'closed';
  $my_post['post_content'] = 'Welcome, this is your private page';
  $my_post['post_status'] = 'publish';
  wp_insert_post( $my_post );
  }
  add_action('user_register', 'my_create_page');

How to make these pages visible only to the specific user and the admin?
Thanks,
Giovanni

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