K 10 svn:author V 4 jeff K 8 svn:date V 27 2008-03-29T23:36:26.000000Z K 7 svn:log V 375 - Don't allow calls to vn_lock() with no lock type requested. Callers which simply want a reference should use vref(). Callers which want to check validity need to hold a lock while performing any action based on that validity. vn_lock() would always release the interlock before returning making any action synchronous with the validity check impossible. END