K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2020-10-17T21:22:40.639186Z
K 7
svn:log
V 323
cache: don't automatically evict negative entries if usage is low

The previous scheme only looked at negative entry count in relation to the
total count, leading to tons of spurious evictions if the cache is not
significantly populated.

Instead, only try the above if negative entry count goes beyond namecache
capacity.

END