On Sat, Apr 30, 2022 at 10:10:32AM +0900, Wonhyuk Yang wrote: > To spread dirty page, nodes are checked whether > it reached the dirty limit using the expensive > node_dirty_ok(). To reduce the number of calling > node_dirty_ok(), last node that hit the dirty > limit is cached. > > Instead of caching the node, caching both node > and it's result of node_dirty_ok() can reduce > the number of calling node_dirty_ok() more than > before. > > Signed-off-by: Wonhyuk Yang <vvghjk1234@xxxxxxxxx> Acked-by: Mel Gorman <mgorman@xxxxxxx> I agree with Andrew that last_pgdat_dirty_ok is a better name. The old name was also bad but seeing as the area is being changed, fixing the name is harmless. -- Mel Gorman SUSE Labs
