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    Subject[PATCH 34/39] autonuma: reset autonuma page data when pages are freed
    Date
    When pages are freed abort any pending migration. If knuma_migrated
    arrives first it will notice because get_page_unless_zero would fail.

    Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
    ---
    mm/page_alloc.c | 4 ++++
    1 files changed, 4 insertions(+), 0 deletions(-)

    diff --git a/mm/page_alloc.c b/mm/page_alloc.c
    index b9c80df..c986c0c 100644
    --- a/mm/page_alloc.c
    +++ b/mm/page_alloc.c
    @@ -614,6 +614,10 @@ static inline int free_pages_check(struct page *page)
    bad_page(page);
    return 1;
    }
    + autonuma_migrate_page_remove(page);
    +#ifdef CONFIG_AUTONUMA
    + ACCESS_ONCE(page->autonuma_last_nid) = -1;
    +#endif
    if (page->flags & PAGE_FLAGS_CHECK_AT_PREP)
    page->flags &= ~PAGE_FLAGS_CHECK_AT_PREP;
    return 0;

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