diff --git a/binder/android/os/IVold.aidl b/binder/android/os/IVold.aidl
index 8422efb..77478d9 100644
--- a/binder/android/os/IVold.aidl
+++ b/binder/android/os/IVold.aidl
@@ -69,7 +69,8 @@
     int getStorageLifeTime();
     void setGCUrgentPace(int neededSegments, int minSegmentThreshold,
                          float dirtyReclaimRate, float reclaimWeight,
-                         int gcPeriod, int minGCSleepTime);
+                         int gcPeriod, int minGCSleepTime,
+                         int targetDirtyRatio);
     void refreshLatestWrite();
     int getWriteAmount();