+2013-01-09 Userspace RCU 0.6.9
+ * API cleanup: use "uatomic_*" in cmm_smp_mb__ API
+ * uatomic: add memory barrier API for and/or/add/sub/inc/sub
+ * Fix uatomic sign cast
+ * Discourage use of pthread_atfork() for call_rcu handlers
+ * Fix call_rcu fork handling
+ * test: fork handling
+
+2012-09-11 Userspace RCU 0.6.8
+ * Fix: call_rcu list corruption on teardown
+