K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2020-09-23T10:42:41.575528Z
K 7
svn:log
V 170
cache: clean up atomic ops on numneg and numcache

- use subtract instead of adding -1
- drop the useless _rel fence

Note this should be converted to a scalable scheme.

END