| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <082f01d1cdf6$c789a2b0$569ce810$@alibaba-inc.com>
Date: Fri, 24 Jun 2016 16:59:55 +0800
From: "Hillf Danton" <hillf.zj@...baba-inc.com>
To: "'Mel Gorman'" <mgorman@...hsingularity.net>
Cc: "'Johannes Weiner'" <hannes@...xchg.org>,
"'Vlastimil Babka'" <vbabka@...e.cz>,
"'linux-kernel'" <linux-kernel@...r.kernel.org>,
<linux-mm@...ck.org>, "Andrew Morton" <akpm@...ux-foundation.org>
Subject: [PATCH] mm, vmscan: Make kswapd reclaim no more than needed
We stop reclaiming pages if any eligible zone is balanced.
Signed-off-by: Hillf Danton <hillf.zj@...baba-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
--
Powered by blists - more mailing lists