diff --git a/kernel/fork.c b/kernel/fork.c
index e044517f2a300682fb07e13f52fe8c8d077af6a5..81c33682f187508dc1ea852d14e016306e557f52 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1097,6 +1097,7 @@ void mmput_async(struct mm_struct *mm)
 		schedule_work(&mm->async_put_work);
 	}
 }
+EXPORT_SYMBOL_GPL(mmput_async);
 #endif
 
 /**