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re: pg->offset and pg->flags

> Ignoring the free page allocator which abuses pg->offset, is there any
> reason we cannot fold pg->flags into pg->offset?  The lower PAGE_SHIFT bits
> of pg->offset are not used.

is this about making vm_page smaller?  if so, and it works, i guess that
seems fine, but how many bits do you want to use?  ie, what is the
smallest PAGE_SIZE we will support?

if not that, why?


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