From 829c28be9bb9a05aa7eeb8a68a4536cca2d3d694 Mon Sep 17 00:00:00 2001
From: Amir Goldstein <amir73il@gmail.com>
Date: Fri, 29 Sep 2017 21:43:07 +0300
Subject: [PATCH] ovl: use d_splice_alias() in place of d_add() in lookup

This is required for NFS export.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
---
 fs/overlayfs/namei.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c
index d69ea0a385f6..9d3ccbd95dde 100644
--- a/fs/overlayfs/namei.c
+++ b/fs/overlayfs/namei.c
@@ -982,9 +982,7 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
 	dput(index);
 	kfree(stack);
 	kfree(d.redirect);
-	d_add(dentry, inode);
-
-	return NULL;
+	return d_splice_alias(inode, dentry);
 
 out_free_oe:
 	dentry->d_fsdata = NULL;