code: def _exclude_disk(self, device, file_system, mount_point):
          
          self.log.debug('_exclude_disk: {}, {}, {}'.format(device, file_system, mount_point))
  
          if not device or device == 'none':
              device = None
  
              # Allow no device if `all_partitions` is true so we can evaluate mount points
              if not self._all_partitions:
                  return True
  
          # Hack for NFS secure mounts
          # Secure mounts might look like this: '/mypath (deleted)', we should
          # ignore all the bits not part of the mount point name. Take also into
          # account a space might be in the mount point.
          mount_point = mount_point.rsplit(' ', 1)[0]
  
          return self._partition_blacklisted(device, file_system, mount_point) or not self._partition_whitelisted(
              device, file_system, mount_point
          )
docs: Return True for disks we don't want or that match regex in the config file