On 05/02/2012 04:47 AM, Bartlomiej Zolnierkiewicz wrote:
From: Bartlomiej Zolnierkiewicz<b.zolnierkie@xxxxxxxxxxx> Subject: [PATCH v5] mm: compaction: handle incorrect MIGRATE_UNMOVABLE type pageblocks When MIGRATE_UNMOVABLE pages are freed from MIGRATE_UNMOVABLE type pageblock (and some MIGRATE_MOVABLE pages are left in it) waiting until an allocation takes ownership of the block may take too long. The type of the pageblock remains unchanged so the pageblock cannot be used as a migration target during compaction. Fix it by:
Cc: Mel Gorman<mgorman@xxxxxxx> Cc: Minchan Kim<minchan@xxxxxxxxxx> Cc: Rik van Riel<riel@xxxxxxxxxx> Cc: Marek Szyprowski<m.szyprowski@xxxxxxxxxxx> Signed-off-by: Bartlomiej Zolnierkiewicz<b.zolnierkie@xxxxxxxxxxx> Signed-off-by: Kyungmin Park<kyungmin.park@xxxxxxxxxxx>
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