- Create bins each with its own map and lock. This would help cases
where the hash of a VA is differnet than ther one which falls in
different bin, and there is no lock contention
- Use STL shared mutexes, that way we can unique_lock for map updates
vs simple reads which can use shared_lock
Change-Id: I118818be65c6373700f5e511045babb6a398938a
Saleel Kudchadker
e23ff0520b