diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 22d17eb..81f569a 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -1228,8 +1228,13 @@
     // don't need synchronization
     State mDrawingState{LayerVector::StateSet::Drawing};
     bool mVisibleRegionsDirty = false;
-    // Set during transaction commit stage to track if the input info for a layer has changed.
+
+    // Set during transaction application stage to track if the input info or children
+    // for a layer has changed.
+    // TODO: Also move visibleRegions over to a boolean system.
     bool mInputInfoChanged = false;
+    bool mSomeChildrenChanged;
+
     bool mGeometryInvalid = false;
     bool mAnimCompositionPending = false;