>What is the invariant which makes you believe that
>"old_page == ZERO_PAGE(new_page)" at this spot each
>and every time?
Nothing, but you overlooked the other part of my patch. I also added a
flush into copy_cow_page() in the case where old_page != ZERO_PAGE.
Duh, I must be getting old. Your patch is fine.
Later,
David S. Miller
davem@redhat.com
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