Mateusz Guzik 93a85508ad cache: tidy up handling of negative entries
- track the total count of hot entries
- pre-read the lock when shrinking since it is typically already taken
- place the lock in its own cacheline
- shorten the hold time of hot lock list when zapping

Sponsored by:	The FreeBSD Foundation
2019-09-23 20:50:04 +00:00
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2019-09-20 20:47:10 +00:00
2019-09-23 12:43:08 +00:00
2019-09-17 18:49:13 +00:00