On Tue, Sep 04, 2012 at 03:26:21PM +0200, Bartlomiej Zolnierkiewicz wrote:
> page->private gets re-used in __free_one_page() to store page order
Please write down result of end-user by this bug.
"So trace_mm_page_pcpu_drain may print order instead of migratetype"
> so migratetype value must be cached locally.
>
> Fixes regression introduced in a701623 ("mm: fix migratetype bug
> which slowed swapping").
>
> Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> Cc: Michal Nazarewicz <mina86@xxxxxxxxxx>
> Cc: Minchan Kim <minchan@xxxxxxxxxx>
> Cc: Mel Gorman <mgorman@xxxxxxx>
> Cc: Hugh Dickins <hughd@xxxxxxxxxx>
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
> Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
--
Kind regards,
Minchan Kim
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