Index: nfs_vnops.c
===================================================================
RCS file: /zoo/pjd/repo/src/sys/nfsclient/nfs_vnops.c,v
retrieving revision 1.276
diff -u -p -r1.276 nfs_vnops.c
--- nfs_vnops.c	1 Jun 2007 01:12:44 -0000	1.276
+++ nfs_vnops.c	5 Jun 2007 13:47:32 -0000
@@ -851,6 +851,7 @@ nfs_lookup(struct vop_lookup_args *ap)
 	int error = 0, attrflag, fhsize;
 	int v3 = NFS_ISV3(dvp);
 	struct thread *td = cnp->cn_thread;
+	int lktype;
 	
 	*vpp = NULLVP;
 	if ((flags & ISLASTCN) && (dvp->v_mount->mnt_flag & MNT_RDONLY) &&
@@ -930,9 +931,10 @@ nfs_lookup(struct vop_lookup_args *ap)
 	}
 
 	if (flags & ISDOTDOT) {
+		lktype = VOP_ISLOCKED(dvp, td);
 		VOP_UNLOCK(dvp, 0, td);
 		error = nfs_nget(dvp->v_mount, fhp, fhsize, &np, cnp->cn_lkflags);
-		vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY, td);
+		vn_lock(dvp, lktype | LK_RETRY, td);
 		if (error)
 			return (error);
 		newvp = NFSTOV(np);