1051 void clear_wb_congested(struct bdi_writeback_congested *congested, int sync)  in clear_wb_congested()  argument
1053 	wait_queue_head_t *wqh = &congestion_wqh[sync];  in clear_wb_congested()
1056 	bit = sync ? WB_sync_congested : WB_async_congested;  in clear_wb_congested()
1058 		atomic_dec(&nr_wb_congested[sync]);  in clear_wb_congested()
1065 void set_wb_congested(struct bdi_writeback_congested *congested, int sync)  in set_wb_congested()  argument
1069 	bit = sync ? WB_sync_congested : WB_async_congested;  in set_wb_congested()
1071 		atomic_inc(&nr_wb_congested[sync]);  in set_wb_congested()
1084 long congestion_wait(int sync, long timeout)  in congestion_wait()  argument
1089 	wait_queue_head_t *wqh = &congestion_wqh[sync];  in congestion_wait()
1115 long wait_iff_congested(int sync, long timeout)  in wait_iff_congested()  argument
1120 	wait_queue_head_t *wqh = &congestion_wqh[sync];  in wait_iff_congested()
1126 	if (atomic_read(&nr_wb_congested[sync]) == 0) {  in wait_iff_congested()