218   TaskStatistics delta = new_statistics;  in Update()  local
219   delta.minflt_ -= minflt_;  in Update()
220   delta.majflt_ -= majflt_;  in Update()
221   delta.cpu_delay_count_ -= cpu_delay_count_;  in Update()
222   delta.cpu_delay_ns_ -= cpu_delay_ns_;  in Update()
223   delta.block_io_delay_count_ -= block_io_delay_count_;  in Update()
224   delta.block_io_delay_ns_ -= block_io_delay_ns_;  in Update()
225   delta.swap_in_delay_count_ -= swap_in_delay_count_;  in Update()
226   delta.swap_in_delay_ns_ -= swap_in_delay_ns_;  in Update()
227   delta.reclaim_delay_count_ -= reclaim_delay_count_;  in Update()
228   delta.reclaim_delay_ns_ -= reclaim_delay_ns_;  in Update()
229   delta.total_delay_ns_ -= total_delay_ns_;  in Update()
230   delta.cpu_time_real_ -= cpu_time_real_;  in Update()
231   delta.cpu_time_virtual_ -= cpu_time_virtual_;  in Update()
232   delta.read_bytes_ -= read_bytes_;  in Update()
233   delta.write_bytes_ -= write_bytes_;  in Update()
234   delta.read_write_bytes_ -= read_write_bytes_;  in Update()
235   delta.cancelled_write_bytes_ -= cancelled_write_bytes_;  in Update()
237   return delta;  in Update()