linux-kernel - Re: [PATCH 1/2] memcg: fix memcg

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 for Android: free password hash cracker in your pocket

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

Date:	Tue, 17 Dec 2013 11:48:20 +0400
From:	Glauber Costa <glommer@...il.com>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	Vladimir Davydov <vdavydov@...allels.com>,
	LKML <linux-kernel@...r.kernel.org>, cgroups@...r.kernel.org,
	linux-mm@...ck.org, devel@...nvz.org,
	Glauber Costa <glommer@...nvz.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Balbir Singh <bsingharora@...il.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [PATCH 1/2] memcg: fix memcg_size() calculation

On Mon, Dec 16, 2013 at 8:47 PM, Michal Hocko <mhocko@...e.cz> wrote:
> On Sat 14-12-13 12:15:33, Vladimir Davydov wrote:
>> The mem_cgroup structure contains nr_node_ids pointers to
>> mem_cgroup_per_node objects, not the objects themselves.
>
> Ouch! This is 2k per node which is wasted. What a shame I haven't
> noticed this back then when reviewing 45cf7ebd5a033 (memcg: reduce the
> size of struct memcg 244-fold)
>
IIRC, they weren't pointers back then. I think they were embedded in
the structure, and I let
them embedded.
My mind may be tricking me, but I think I recall that Johannes changed
them to pointers
in a later time. No ?

In any case, this is correct.
--
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/