Index: ufs/ffs/ffs_vfsops.c
===================================================================
RCS file: /home/ncvs/src/sys/ufs/ffs/ffs_vfsops.c,v
retrieving revision 1.340
diff -u -r1.340 ffs_vfsops.c
--- ufs/ffs/ffs_vfsops.c	26 Mar 2008 20:48:07 -0000	1.340
+++ ufs/ffs/ffs_vfsops.c	11 Apr 2008 09:31:21 -0000
@@ -866,7 +866,7 @@
 	 * Initialize filesystem stat information in mount struct.
 	 */
 	MNT_ILOCK(mp);
-	mp->mnt_kern_flag |= MNTK_MPSAFE;
+	mp->mnt_kern_flag |= MNTK_MPSAFE | MNTK_LOOKUP_SHARED;
 	MNT_IUNLOCK(mp);
 #ifdef UFS_EXTATTR
 #ifdef UFS_EXTATTR_AUTOSTART