From f57250af7645e26baa7e9ab308699515368836be Mon Sep 17 00:00:00 2001
From: daichi <daichi@FreeBSD.org>
Date: Tue, 23 Oct 2007 03:34:58 +0000
Subject: [PATCH] MFC: Fixed un-vrele issue of upper layer root vnode of 
 unionfs.

Submitted by:   Masanori Ozawa <ozawa@ongs.co.jp> (unionfs developer)
Reviewed by:    jeff, kensmith
Approved by:    re (kensmith)
---
 sys/fs/unionfs/union_vfsops.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/fs/unionfs/union_vfsops.c b/sys/fs/unionfs/union_vfsops.c
index 4940611ff61a..108359b7f114 100644
--- a/sys/fs/unionfs/union_vfsops.c
+++ b/sys/fs/unionfs/union_vfsops.c
@@ -330,8 +330,8 @@ unionfs_domount(struct mount *mp, struct thread *td)
 	 */
 	error = unionfs_nodeget(mp, ump->um_uppervp, ump->um_lowervp,
 	    NULLVP, &(ump->um_rootvp), NULL, td);
+	vrele(upperrootvp);
 	if (error) {
-		vrele(upperrootvp);
 		free(ump, M_UNIONFSMNT);
 		mp->mnt_data = NULL;
 		return (error);