- Clear LOCKSHARED if LOOKUP_SHARED is not enabled. This is not strictly

necessary since we disable the shared locks in vfs_cache, but it is
   prefered that the option not leak out into filesystems when it is
   disabled.

Sponsored by:	Isilon Systems, Inc.

sys/kern/vfs_lookup.c

@@ -117,6 +117,9 @@ namei(ndp)
 	    ("namei: nameiop contaminated with flags"));
 	KASSERT((cnp->cn_flags & OPMASK) == 0,
 	    ("namei: flags contaminated with nameiops"));
+#ifndef LOOKUP_SHARED
+	cnp->cn_flags &= ~LOCKSHARED;
+#endif
 	fdp = p->p_fd;
 
 	/*