WB_FRN_TIME_AVG_SHIFT  664 fs/fs-writeback.c 		avg_time += (max_time >> WB_FRN_TIME_AVG_SHIFT) -
WB_FRN_TIME_AVG_SHIFT  665 fs/fs-writeback.c 			    (avg_time >> WB_FRN_TIME_AVG_SHIFT);