reclaim_throttle
reclaim_throttle(pgdat, VMSCAN_THROTTLE_ISOLATED);
extern void reclaim_throttle(pg_data_t *pgdat, enum vmscan_throttle_state reason);
reclaim_throttle(NODE_DATA(numa_node_id()),
reclaim_throttle(pgdat, VMSCAN_THROTTLE_ISOLATED);
reclaim_throttle(pgdat, VMSCAN_THROTTLE_WRITEBACK);
reclaim_throttle(pgdat, VMSCAN_THROTTLE_WRITEBACK);
reclaim_throttle(pgdat, VMSCAN_THROTTLE_CONGESTED);
reclaim_throttle(pgdat, VMSCAN_THROTTLE_NOPROGRESS);