Andreas Kling 0d963fd641 Kernel: Remove unnecessary counting of VMObject-attached Regions ...

VMObject already has an IntrusiveList of all the Regions that map it.
We were keeping a counter in addition to this, and only using it in
a single place to avoid iterating over the list in case it only had
1 entry.

Simplify VMObject by removing this counter and always iterating the
list even if there's only 1 entry. :^)

2021-07-25 17:28:06 +02:00

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