diff --git a/binder/android/os/IVold.aidl b/binder/android/os/IVold.aidl
index 810fdad..15213ea 100644
--- a/binder/android/os/IVold.aidl
+++ b/binder/android/os/IVold.aidl
@@ -143,6 +143,12 @@
     // on failure.
     int getStorageRemainingLifetime();
 
+    int getWriteBoosterBufferSize();
+    int getWriteBoosterBufferAvailablePercent();
+    boolean setWriteBoosterBufferFlush(boolean enable);
+    boolean setWriteBoosterBufferOn(boolean enable);
+    int getWriteBoosterLifeTimeEstimate();
+
     const int FSTRIM_FLAG_DEEP_TRIM = 1;
 
     const int MOUNT_FLAG_PRIMARY = 1;