How to list ALL Pages in the dashboard?

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If that listing has too many pages, maybe you’ll run into troubles.

You probably already know that this can be set in the Screen Options of the page http://example.com/wp-admin/edit.php?post_type=page.

If you try to put a really high value there, this warning pops up and the system doesn’t accept it:

1500 pages

But the following permanently sets this value to 2000.
I don’t have more than 999 pages to test if that limit that WordPress is warning about will be overriden or not, but the 2k shows up after refreshing the page, and keeps there if you try to lower it.

add_filter( 'get_user_metadata', 'pages_per_page_wpse_23503', 10, 4 );
function pages_per_page_wpse_23503( $check, $object_id, $meta_key, $single )
{ 
    if( 'edit_page_per_page' == $meta_key )
        return 2000;

    return $check;
}

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