On Thu, Jan 26, 2012 at 03:01:02PM -0500, Rik van Riel wrote:

Currently a failed order-9 (transparent hugepage) compaction can
lead to memory compaction being temporarily disabled for a memory
zone.  Even if we only need compaction for an order 2 allocation,
eg. for jumbo frames networking.

The fix is relatively straightforward: keep track of the highest
order at which compaction is succeeding, and only defer compaction
for orders at which compaction is failing.

Signed-off-by: Rik van Riel <redacted>

Acked-by: Mel Gorman <redacted>

-- 
Mel Gorman
SUSE Labs

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