From 2f738aa7b35cfd361de2aeebc65fc5a610d2e2e4 Mon Sep 17 00:00:00 2001
From: Eivind Eklund <eivind@FreeBSD.org>
Date: Sat, 18 Dec 1999 22:57:38 +0000
Subject: [PATCH] Do NOT unlock dvp if LOCKPARENT && vp == dvp.  Does not
 affect any code presently in the tree.

---
 sys/sys/namei.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/sys/namei.h b/sys/sys/namei.h
index 143c0f061c4f..29e35e1ab287 100644
--- a/sys/sys/namei.h
+++ b/sys/sys/namei.h
@@ -181,7 +181,8 @@ NDINIT(ndp, op, flags, segflg, namep, p)
 		_ndp->ni_cnd.cn_flags &= ~HASBUF;			\
 	}								\
 	if (!(_flags & NDF_NO_DVP_UNLOCK) &&				\
-	    (_ndp->ni_cnd.cn_flags & LOCKPARENT))			\
+	    (_ndp->ni_cnd.cn_flags & LOCKPARENT) &&			\
+	    _ndp->ni_dvp != _ndp->ni_vp)				\
 		VOP_UNLOCK(_ndp->ni_dvp, 0, _ndp->ni_cnd.cn_proc);	\
 	if (!(_flags & NDF_NO_DVP_RELE) &&				\
 	    (_ndp->ni_cnd.cn_flags & (LOCKPARENT|WANTPARENT))) {	\