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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.

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

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