linux-kernel - Re: [PATCH 1/2] mm: memcontrol: cleanup css

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Message-ID: <20160301195333.GA22717@cmpxchg.org>
Date:	Tue, 1 Mar 2016 14:53:33 -0500
From:	Johannes Weiner <hannes@...xchg.org>
To:	Vladimir Davydov <vdavydov@...tuozzo.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Tejun Heo <tj@...nel.org>, Michal Hocko <mhocko@...nel.org>,
	cgroups@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] mm: memcontrol: cleanup css_reset callback

On Tue, Mar 01, 2016 at 02:13:12PM +0300, Vladimir Davydov wrote:
>  - Do not take memcg_limit_mutex for resetting limits - the cgroup
>    cannot be altered from userspace anymore, so no need to protect them.
> 
>  - Use plain page_counter_limit() for resetting ->memory and ->memsw
>    limits instead of mem_cgrouop_resize_* helpers - we enlarge the
>    limits, so no need in special handling.
> 
>  - Reset ->swap and ->tcpmem limits as well.
> 
> Signed-off-by: Vladimir Davydov <vdavydov@...tuozzo.com>

Acked-by: Johannes Weiner <hannes@...xchg.org>