Andreas Kling 7f9a33dba1 Kernel: Make Region single-owner instead of ref-counted ...

This simplifies the ownership model and makes Region easier to reason
about. Userspace Regions are now primarily kept by Process::m_regions.

Kernel Regions are kept in various OwnPtr<Regions>'s.

Regions now only ever get unmapped when they are destroyed.

2019-09-27 14:25:42 +02:00

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