K 10 svn:author V 3 alc K 8 svn:date V 27 2003-08-23T06:52:32.000000Z K 7 svn:log V 334 To implement the sequential access optimization, vm_fault() may need to reacquire the "first" object's lock while a backing object's lock is held. Since this is a lock-order reversal, vm_fault() uses trylock to acquire the first object's lock, skipping the sequential access optimization in the unlikely event that the trylock fails. END