K 10 svn:author V 10 nwhitehorn K 8 svn:date V 27 2015-03-16T16:29:33.663395Z K 7 svn:log V 327 Convert PTE eviction lock from an RW lock to a RM lock. It is held for writing approximately never (< 0.00000001% under heavy VM load, and it can go for months without ever being acquired in normal operation). This provides a 10% (2-minute) improvement in wall clock time for make -j32 buildworld on a 4-core 32-thread POWER8. END