volatile write to make isCleaning visible at ConcurrentLRUCache

[Furkan KAMACI]

Hi;

ConcurrentLRUCache<K,V>  class has that lines:

...
long oldestEntry = this.oldestEntry;
isCleaning = true;
this.oldestEntry = oldestEntry;     // volatile write to make isCleaning
visible
...

What does that assignment and so makes isCleaning visible?

Thanks;
Furkan KAMACI