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Kernel: Refactor Region/PageDirectory ownership model.

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Make PageDirectory retainable and have each Region co-own the PageDirectory
they're mapped into. When unmapped, Region has no associated PageDirectory.

This allows Region to automatically unmap itself when destroyed.
This commit is contained in:
Andreas Kling 2019-01-22 05:01:00 +01:00
parent afccbe51a4
commit 2f2f28f212
5 changed files with 60 additions and 68 deletions
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2
Kernel/Process.h
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@ -273,7 +273,7 @@ private:
int alloc_fd();
OwnPtr<PageDirectory> m_page_directory;
RetainPtr<PageDirectory> m_page_directory;
Process* m_prev { nullptr };
Process* m_next { nullptr };