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SubjectRe: [PATCH] mm: use a radix-tree to make do_move_pages() complexity linear
Nick Piggin wrote:
> If you are worried about vmalloc overhead, I'd suggest testing with -mm.
> I've rewritten the vmap code so it is now slightly scalable and sane to
> use.

I am actually only worried about move_pages() performance for large
buffers :) The vmalloc overhead is probably negligible against the
quadratic duration of move_pages() for dozens of MB.


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