On Thu, Jul 21, 2016 at 03:11:01PM +0100, Mel Gorman wrote: > Page reclaim determines whether a pgdat is unreclaimable by examining how > many pages have been scanned since a page was freed and comparing that to > the LRU sizes. Skipped pages are not reclaim candidates but contribute to > scanned. This can prematurely mark a pgdat as unreclaimable and trigger > an OOM kill. > > This patch accounts for skipped pages as a partial scan so that an > unreclaimable pgdat will still be marked as such but by scaling the cost > of a skip, it'll avoid the pgdat being marked prematurely. > > Signed-off-by: Mel Gorman <mgor...@techsingularity.net>
Acked-by: Johannes Weiner <han...@cmpxchg.org>
