Re: [PATCH 10/25] mm, compaction: Ignore the fragmentation avoidance boost for isolation and compaction

On 1/4/19 1:49 PM, Mel Gorman wrote: > When pageblocks get fragmented, watermarks are artifically boosted to > reclaim pages to avoid further fragmentation events. However, compaction > is often either fragmentation-neutral or moving movable pages away from > unmovable/reclaimable pages. As the

[PATCH 10/25] mm, compaction: Ignore the fragmentation avoidance boost for isolation and compaction

When pageblocks get fragmented, watermarks are artifically boosted to reclaim pages to avoid further fragmentation events. However, compaction is often either fragmentation-neutral or moving movable pages away from unmovable/reclaimable pages. As the true watermarks are preserved, allow compaction