Messages in this thread Patch in this message | | | From | "Hillf Danton" <> | Subject | [PATCH] mm, vmscan: Make kswapd reclaim no more than needed | Date | Fri, 24 Jun 2016 16:59:55 +0800 |
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We stop reclaiming pages if any eligible zone is balanced.
Signed-off-by: Hillf Danton <hillf.zj@alibaba-inc.com> ---
--- a/mm/vmscan.c Thu Jun 23 17:56:34 2016 +++ b/mm/vmscan.c Fri Jun 24 16:45:58 2016 @@ -3185,15 +3185,10 @@ static int balance_pgdat(pg_data_t *pgda if (!populated_zone(zone)) continue; - if (!zone_balanced(zone, sc.order, classzone_idx)) { - classzone_idx = i; - break; - } + if (zone_balanced(zone, sc.order, classzone_idx)) + goto out; } - if (i < 0) - goto out; - /* * Do some background aging of the anon list, to give * pages a chance to be referenced before reclaiming. All @@ -3236,19 +3231,6 @@ static int balance_pgdat(pg_data_t *pgda /* Check if kswapd should be suspending */ if (try_to_freeze() || kthread_should_stop()) break; - - /* - * Stop reclaiming if any eligible zone is balanced and clear - * node writeback or congested. - */ - for (i = 0; i <= classzone_idx; i++) { - zone = pgdat->node_zones + i; - if (!populated_zone(zone)) - continue; - - if (zone_balanced(zone, sc.order, classzone_idx)) - goto out; - } /* * Raise priority if scanning rate is too low or there was no --
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