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  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Fri, 4 Jul 2008 18:02:26 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	"kosaki.motohiro@...fujitsu.com" <kosaki.motohiro@...fujitsu.com>,
	"riel@...hat.com" <riel@...hat.com>
Subject: memcg: lru scan fix (Was: 2.6.26-rc8-mm1

Since rc5-mm3, memcg easily goes into OOM when limit was low.
This is a fix to split-lru to fix OOM.

==
Under memcg, active anon tend not to go to inactive anon.
This will cause OOM in memcg easily when tons of anon was used at once.
This check was lacked in split-lru.

Signed-off-by:KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

Index: test-2.6.26-rc8-mm1/mm/vmscan.c
===================================================================
--- test-2.6.26-rc8-mm1.orig/mm/vmscan.c
+++ test-2.6.26-rc8-mm1/mm/vmscan.c
@@ -1501,6 +1501,8 @@ static unsigned long shrink_zone(int pri
 	 */
 	if (scan_global_lru(sc) && inactive_anon_is_low(zone))
 		shrink_active_list(SWAP_CLUSTER_MAX, zone, sc, priority, 0);
+	else if (!scan_global_lru(sc))
+		shrink_active_list(SWAP_CLUSTER_MAX, zone, sc, priority, 0);
 
 	throttle_vm_writeout(sc->gfp_mask);
 	return nr_reclaimed;

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists