Merge "Check the data directory before mount tmpfs"
diff --git a/core/jni/com_android_internal_os_Zygote.cpp b/core/jni/com_android_internal_os_Zygote.cpp
index aacf700..5efc4db 100644
--- a/core/jni/com_android_internal_os_Zygote.cpp
+++ b/core/jni/com_android_internal_os_Zygote.cpp
@@ -202,6 +202,8 @@
  */
 static constexpr int STORAGE_DIR_CHECK_TIMEOUT_US = 1000 * 1000 * 60 * 5;
 
+static void WaitUntilDirReady(const std::string& target, fail_fn_t fail_fn);
+
 /**
  * A helper class containing accounting information for USAPs.
  */
@@ -1249,7 +1251,11 @@
     auto volPath = StringPrintf("%s/%s", externalPrivateMountPath, ent->d_name);
     auto cePath = StringPrintf("%s/user", volPath.c_str());
     auto dePath = StringPrintf("%s/user_de", volPath.c_str());
+    // Wait until dir user is created.
+    WaitUntilDirReady(cePath.c_str(), fail_fn);
     MountAppDataTmpFs(cePath.c_str(), fail_fn);
+    // Wait until dir user_de is created.
+    WaitUntilDirReady(dePath.c_str(), fail_fn);
     MountAppDataTmpFs(dePath.c_str(), fail_fn);
   }
   closedir(dir);