linux-kernel - Re: [PATCH] memcg: deprecate memory.force

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Message-ID: <20140512150014.GB1421@htj.dyndns.org>
Date:	Mon, 12 May 2014 11:00:14 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	lizefan@...wei.com, cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org, hannes@...xchg.org
Subject: Re: [PATCH] memcg: deprecate memory.force_empty knob

On Mon, May 12, 2014 at 04:58:03PM +0200, Michal Hocko wrote:
> @@ -4793,6 +4793,10 @@ static int mem_cgroup_force_empty_write(struct cgroup_subsys_state *css,
>  
>  	if (mem_cgroup_is_root(memcg))
>  		return -EINVAL;
> +	pr_info("%s (%d): memory.force_empty is deprecated and will be removed.",
> +			current->comm, task_pid_nr(current));
> +	pr_cont(" Let us know if you know if it needed in your usecase at");
> +	pr_cont(" linux-mm@...ck.org\n");
>  	return mem_cgroup_force_empty(memcg);

It probably would be way easier to just mark the knob with
CFTYPE_INSANE.

Thanks.

-- 
tejun
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