K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2017-05-04T03:11:59.642913Z
K 7
svn:log
V 185
cache: stop holding the ncneg_hot lock across purging

Only non-hot entries are purged so the lock is not needed in the first place.
This saves one lock/unlock pair.

MFC after:	1 week

END