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SubjectRe: [PATCH 2/7] export memory cgroup's swappines by mem_cgroup_swappiness()
On Thu 16-06-11 12:52:22, KAMEZAWA Hiroyuki wrote:
> From 6f9c40172947fb92ab0ea6f7d73d577473879636 Mon Sep 17 00:00:00 2001
> From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> Date: Wed, 15 Jun 2011 12:06:31 +0900
> Subject: [PATCH 2/7] export memory cgroup's swappines by mem_cgroup_swappiness()
>
> Each memory cgroup has 'swappiness' value and it can be accessed by
> get_swappiness(memcg). The major user is try_to_free_mem_cgroup_pages()
> and swappiness is passed by argument.
>
> It's now static function but some planned updates will need to
> get swappiness from files other than memcontrol.c
> This patch exports get_swappiness() as mem_cgroup_swappiness().
> By this, we can remove the argument of swapiness from try_to_fre...
>
> I think this makes sense because passed swapiness is always from memory
> cgroup passed as an argument and this duplication of argument is
> not very good.

Yes makes sense and it makes it more looking like a global reclaim.

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

Reviewed-by: Michal Hocko <mhocko@suse.cz>

--
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9
Czech Republic


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