diff --git a/fs/proc/root.c b/fs/proc/root.c
index 1e15a2b..b080b79 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -67,8 +67,7 @@
 		sb->s_flags = flags;
 		err = proc_fill_super(sb);
 		if (err) {
-			up_write(&sb->s_umount);
-			deactivate_super(sb);
+			deactivate_locked_super(sb);
 			return err;
 		}