1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/namespace.h b/include/linux/namespace.h
index 697991b69f9b..0e5a86f13b2f 100644
--- a/include/linux/namespace.h
+++ b/include/linux/namespace.h
@@ -17,7 +17,8 @@ extern void __put_namespace(struct namespace *namespace);
 
 static inline void put_namespace(struct namespace *namespace)
 {
-        if (atomic_dec_and_test(&namespace->count))
+        if (atomic_dec_and_lock(&namespace->count, &vfsmount_lock))
+                /* releases vfsmount_lock */
                 __put_namespace(namespace);
 }