K 10
svn:author
V 4
jeff
K 8
svn:date
V 27
2018-02-24T02:08:18.679156Z
K 7
svn:log
V 260
Protect pageout wakeup with atomics and a new lock.  Protect free_count with
atomics and move it out from under the free lock.  Only wakeup pageout on
transitions to low states.  Only set and clear bits from threads making
transitions across count thresholds.

END