48bd6d4a49
pathes, as far as I see and testing seems to confirm it. Comparision of old_lock with LK_SHARED make sense only if vnode is locked by current thread. When downgrading, pass LK_RETRY to the vn_lock(), since otherwise vn_lock() unlocks the doomed vnode, causing extra unlock. Reported and tested by: pho Approved by: re (rwatson) MFC after: 3 weeks