diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 9525573..02d5f1e 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -177,6 +177,11 @@
     std::atomic<nsecs_t> mLastSwapTime = 0;
 };
 
+struct SCOPED_CAPABILITY UnnecessaryLock {
+    explicit UnnecessaryLock(Mutex& mutex) ACQUIRE(mutex) {}
+    ~UnnecessaryLock() RELEASE() {}
+};
+
 class SurfaceFlinger : public BnSurfaceComposer,
                        public PriorityDumper,
                        private IBinder::DeathRecipient,