WB_WRITTEN         97 mm/backing-dev.c 		   (unsigned long) K(wb_stat(wb, WB_WRITTEN)),
WB_WRITTEN        604 mm/page-writeback.c 	inc_wb_stat(wb, WB_WRITTEN);
WB_WRITTEN       1365 mm/page-writeback.c 	written = percpu_counter_read(&wb->stat[WB_WRITTEN]);