Andreas Kling c1f8291ce4 Kernel: When physical page allocation fails, try to purge something ...

Instead of panicking right away when we run out of physical pages,
we now try to find a PurgeableVMObject with some volatile pages in it.
If we find one, we purge that entire object and steal one of its pages.

This makes it possible for the kernel to keep going instead of dying.
Very cool. :^)

2019-12-26 11:45:36 +01:00

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