On Fri, 21 Sep 2012 11:46:18 +0100 Mel Gorman <mgorman@xxxxxxx> wrote: > Changelog since V2 > o Fix BUG_ON triggered due to pages left on cc.migratepages > o Make compact_zone_order() require non-NULL arg `contended' > > Changelog since V1 > o only abort the compaction if lock is contended or run too long > o Rearranged the code by Andrea Arcangeli. > > isolate_migratepages_range() might isolate no pages if for example when > zone->lru_lock is contended and running asynchronous compaction. In this > case, we should abort compaction, otherwise, compact_zone will run a > useless loop and make zone->lru_lock is even contended. hm, this appears to be identical to mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long.patch mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix.patch mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix-2.patch so I simply omitted patches 2, 3 and 4. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>