Be able to expire all views, but not all nodes; ect...

Break this code out into its own function

function boost_cache_expire($paths) {
...
  // Get filenames & hash from db
  foreach ($data as $dblookup) {
    $result = db_query("SELECT filename, hash FROM {boost_cache} WHERE page_callback = '%s' AND page_arguments = '%s' AND page_id = '%s'", $dblookup['page_callback'], $dblookup['page_arguments'], $dblookup['page_id']);
    while ($info = db_fetch_array($result)) {
      // Flush expired files
      boost_cache_kill($info['filename'], $info['hash']);
    }
  }
}

This will rock your socks off