diff --git a/fs/namespace.c b/fs/namespace.c
index f815218..9dfb4ca 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1570,16 +1570,7 @@
 {
 	/* Is this a proxy for a mount namespace? */
 	struct inode *inode = dentry->d_inode;
-	struct proc_ns *ei;
-
-	if (!proc_ns_inode(inode))
-		return false;
-
-	ei = get_proc_ns(inode);
-	if (ei->ns_ops != &mntns_operations)
-		return false;
-
-	return true;
+	return proc_ns_inode(inode) && dentry->d_fsdata == &mntns_operations;
 }
 
 struct mnt_namespace *to_mnt_ns(struct ns_common *ns)
@@ -1596,7 +1587,7 @@
 	if (!is_mnt_ns_file(dentry))
 		return false;
 
-	mnt_ns = to_mnt_ns(get_proc_ns(dentry->d_inode)->ns);
+	mnt_ns = to_mnt_ns(get_proc_ns(dentry->d_inode));
 	return current->nsproxy->mnt_ns->seq >= mnt_ns->seq;
 }