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SubjectRe: [PATCH] mm: compaction: Abort compaction if too many pages are isolated and caller is asynchronous
On Mon, Jun 06, 2011 at 11:43:45AM +0100, Mel Gorman wrote:
> Maybe not full, but it has more PageReserved pages than anywhere else
> and few MIGRATE_MOVABLE blocks. MIGRATE_MOVABLE gets skipped during
> async compaction we could easily reach the end of the DMA zone quickly.

Debug data has nr_isolated_file in dma zone 1 and nr_isolated_file in
normal zone being -1.

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