On 11/16/2012 06:22 AM, Mel Gorman wrote:
Note: Based on "mm/mpol: Use special PROT_NONE to migrate pages" but
        sufficiently different that the signed-off-bys were dropped

Combine our previous _PAGE_NUMA, mpol_misplaced and migrate_misplaced_page()
pieces into an effective migrate on fault scheme.

Note that (on x86) we rely on PROT_NONE pages being !present and avoid
the TLB flush from try_to_unmap(TTU_MIGRATION). This greatly improves the
page-migration performance.

Based-on-work-by: Peter Zijlstra <a.p.zijls...@chello.nl>
Signed-off-by: Mel Gorman <mgor...@suse.de>

Reviewed-by: Rik van Riel <r...@redhat.com>

(this is getting easier, I must have reviewed this code 4x now)

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