K 10 svn:author V 7 davidxu K 8 svn:date V 27 2009-03-13T06:06:20.577313Z K 7 svn:log V 220 1) Check NULL pointer before calling umtx_pi_adjust_locked(), this avoids a PANIC. 2) Rework locking for POSIX priority-mutex, this fixes a race where a thread may wait there forever even if the mutex is unlocked. END