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SubjectPG_reserved bug
I've found a bug in the 2.4.20 kernel (might have appeared before), that if
the PG_reserved flag is set on a page, its reference count will be
incremented but won't be decremented. This is due to the wrong order of
lazy if tests in __free_pages().

I have two questions:
1. How do I report it? I found no maintainer for MM in MAINTAINERS
2. I'm writing a module that gets pages (via __get_free_pages) and holds
them throughout its lifetime. Where must I check if this page can be taken
from under me, without using the reserved bit? In other words, if I want to
make sure the behavior is the same with or without the reserved bit, what
must I maintain?


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