wakeup_flusher_threads  112 fs/sync.c      	wakeup_flusher_threads(WB_REASON_SYNC);
wakeup_flusher_threads  196 include/linux/writeback.h void wakeup_flusher_threads(enum wb_reason reason);
wakeup_flusher_threads 1991 mm/page-writeback.c 		wakeup_flusher_threads(WB_REASON_PERIODIC);
wakeup_flusher_threads 2027 mm/vmscan.c    		wakeup_flusher_threads(WB_REASON_VMSCAN);