diff --git a/Process.h b/Process.h
index 1406782..1c59812 100644
--- a/Process.h
+++ b/Process.h
@@ -21,6 +21,7 @@
 namespace vold {
 
 int KillProcessesWithOpenFiles(const std::string& path, int signal);
+int KillProcessesWithMounts(const std::string& path, int signal);
 
 }  // namespace vold
 }  // namespace android