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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 10:19:02AM +0100, Mel Gorman wrote:
> On Mon, May 13, 2013 at 05:11:43PM +0800, Tang Chen wrote:
...
> > If so, I'm wondering where should we put this callback pointers ?
> > In struct page ?
> >
>
> No, I would expect the callbacks to be part the address space operations
> which can be found via page->mapping.

If someone adds those callbacks and provides a means for testing them,
it would be pretty trivial to change the aio code to migrate its pinned
pages on demand.

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


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