Re: [PATCH 06/11] mm: compaction: make isolate_lru_page() filter-awareagain

From: Rik van Riel
Date: Thu Dec 15 2011 - 22:35:08 EST


On 12/14/2011 10:41 AM, Mel Gorman wrote:
Commit [39deaf85: mm: compaction: make isolate_lru_page() filter-aware]
noted that compaction does not migrate dirty or writeback pages and
that is was meaningless to pick the page and re-add it to the LRU list.
This had to be partially reverted because some dirty pages can be
migrated by compaction without blocking.

This patch updates "mm: compaction: make isolate_lru_page" by skipping
over pages that migration has no possibility of migrating to minimise
LRU disruption.

Signed-off-by: Mel Gorman<mgorman@xxxxxxx>

Reviewed-by: Rik van Riel<riel@xxxxxxxxxx>

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