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    SubjectRe: [PATCH V2 1/2] mm: hotplug: implement non-movable version of get_user_pages() called get_user_pages_non_movable()
    On Mon, May 13, 2013 at 10:54:03AM -0400, Jeff Moyer wrote:
    > How do you propose to move the ring pages?

    It's the same problem as doing a TLB shootdown: flush the old pages from
    userspace's mapping, copy any existing data to the new pages, then
    repopulate the page tables. It will likely require the addition of
    address_space_operations for the mapping, but that's not too hard to do.

    -ben
    --
    "Thought is the essence of where you are now."


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