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SubjectRe: mm question
> It does not have to be contiguous. I was thinking of simply starting with 
> the smallest address and trying to free the pages until the needed amount
> is available. But I have no idea how to properly do locking or force the
> page to be swapped out or something.

You can simply get_free_page() 300K of pages. However you can't land them
in a given band other than the existing "below 16Mb" "below 4Gb" "anywhere"

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