linux-kernel - [PATCH mmotm/next] vmscan-memcg-always-use-swappiness-of-the-reclaimed-memcg-swappiness-and-o om-control-fix.patch

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.LSU.2.11.1405271436200.4485@eggly.anvils>
Date:	Tue, 27 May 2014 14:38:40 -0700 (PDT)
From:	Hugh Dickins <hughd@...gle.com>
To:	Michal Hocko <mhocko@...e.cz>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH mmotm/next]
 vmscan-memcg-always-use-swappiness-of-the-reclaimed-memcg-swappiness-and-o
 om-control-fix.patch

mem_cgroup_swappiness() oopses immediately when
booted with cgroup_disable=memory.  Fix that in the obvious inelegant
way for now - though I hope we are moving towards a world in which
almost all of the mem_cgroup_disabled() tests will vanish, with a
root_mem_cgroup which can handle the basics even when disabled.

Signed-off-by: Hugh Dickins <hughd@...gle.com>
---

 mm/memcontrol.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- mmotm/mm/memcontrol.c	2014-05-21 18:12:18.072022438 -0700
+++ linux/mm/memcontrol.c	2014-05-21 19:34:30.608546905 -0700
@@ -1531,7 +1531,7 @@ static unsigned long mem_cgroup_margin(s
 int mem_cgroup_swappiness(struct mem_cgroup *memcg)
 {
 	/* root ? */
-	if (!memcg->css.parent)
+	if (mem_cgroup_disabled() || !memcg->css.parent)
 		return vm_swappiness;
 
 	return memcg->swappiness;
--
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/