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From: Michal Hocko <mhocko@kernel.org>
To: Vladimir Davydov <vdavydov@parallels.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Tejun Heo <tj@kernel.org>, Oleg Nesterov <oleg@redhat.com>,
	Greg Thelen <gthelen@google.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
	linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 7/8] memcg: get rid of mm_struct::owner
Date: Tue, 14 Jul 2015 17:32:29 +0200	[thread overview]
Message-ID: <20150714153229.GH17660@dhcp22.suse.cz> (raw)
In-Reply-To: <20150711070905.GO2436@esperanza>

On Sat 11-07-15 10:09:06, Vladimir Davydov wrote:
[...]
> Why can't we make root_mem_cgroup statically allocated? AFAICS it's a
> common practice - e.g. see blkcg_root, root_task_group.

It's not that easy. mem_cgroup doesn't have a fixed size. It depends
on the number of online nodes. I haven't looked closer to this yet but
cgroup has an early init code path maybe we can hook in there.

I would like to settle with the current issues described in other email
first, though. This is just a cosmetic issue.
-- 
Michal Hocko
SUSE Labs

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  reply	other threads:[~2015-07-14 15:32 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-08 12:27 [PATCH 0/8 -v3] memcg cleanups + " Michal Hocko
2015-07-08 12:27 ` [PATCH 1/8] memcg: export struct mem_cgroup Michal Hocko
2015-07-08 15:39   ` Vladimir Davydov
2015-07-09 11:22     ` Michal Hocko
2015-07-09 11:51       ` Vladimir Davydov
2015-07-08 12:27 ` [PATCH 2/8] memcg: get rid of mem_cgroup_root_css for !CONFIG_MEMCG Michal Hocko
2015-07-08 15:41   ` Vladimir Davydov
2015-07-08 12:27 ` [PATCH 3/8] memcg: get rid of extern for functions in memcontrol.h Michal Hocko
2015-07-08 15:43   ` Vladimir Davydov
2015-07-08 12:27 ` [PATCH 4/8] memcg, mm: move mem_cgroup_select_victim_node into vmscan Michal Hocko
2015-07-08 16:01   ` Vladimir Davydov
2015-07-09 12:08     ` Michal Hocko
2015-07-08 12:27 ` [PATCH 5/8] memcg: restructure mem_cgroup_can_attach() Michal Hocko
2015-07-08 16:05   ` Vladimir Davydov
2015-07-08 12:27 ` [PATCH 6/8] memcg, tcp_kmem: check for cg_proto in sock_update_memcg Michal Hocko
2015-07-08 16:11   ` Vladimir Davydov
2015-07-08 12:27 ` [PATCH 7/8] memcg: get rid of mm_struct::owner Michal Hocko
2015-07-08 17:32   ` Vladimir Davydov
2015-07-09 14:09     ` Michal Hocko
2015-07-10  7:54       ` Vladimir Davydov
2015-07-10 12:45         ` Michal Hocko
2015-07-11  7:09           ` Vladimir Davydov
2015-07-14 15:32             ` Michal Hocko [this message]
2015-07-10 14:05   ` Michal Hocko
2015-07-14 15:18     ` Michal Hocko
2015-07-29 11:58       ` Michal Hocko
2015-07-29 13:14       ` Johannes Weiner
2015-07-29 15:05         ` Michal Hocko
2015-07-29 16:42           ` Johannes Weiner
2015-07-08 12:27 ` [PATCH 8/8] memcg: get rid of mem_cgroup_from_task Michal Hocko
2015-07-08 17:43   ` Vladimir Davydov
2015-07-09 14:13     ` Michal Hocko
2015-07-09 14:32       ` Vladimir Davydov
2015-07-09 16:33         ` Michal Hocko

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