* elements entered into the array, during which, we're decaying all elements.
* If, after decay, an element gets inserted again, its generation is set to 11b
* to make sure it has higher numerical count than other, older elements and
- * thus emulate an an LRU-like behavior when deleting elements to free up space
+ * thus emulate an LRU-like behavior when deleting elements to free up space
* in the page.
*
* When an element reaches it's max count of action_threshold, we try to poison