linux-kernel - Re: [PATCH 21/23] cgroup: make cftype->[un]register_event() deal with cgroup_subsys

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Date:	Fri, 2 Aug 2013 12:08:51 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Tejun Heo <tj@...nel.org>
CC:	<containers@...ts.linux-foundation.org>, <cgroups@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>,
	Balbir Singh <bsingharora@...il.com>
Subject: Re: [PATCH 21/23] cgroup: make cftype->[un]register_event() deal
 with cgroup_subsys_state instead of cgroup

> @@ -506,15 +506,17 @@ struct cftype {
>  	 * you want to provide this functionality. Use eventfd_signal()
>  	 * on eventfd to send notification to userspace.
>  	 */
> -	int (*register_event)(struct cgroup *cgrp, struct cftype *cft,
> -			struct eventfd_ctx *eventfd, const char *args);
> +	int (*register_event)(struct cgroup_subsys_state *css,
> +			      struct cftype *cft, struct eventfd_ctx *eventfd,
> +			      const char *args);
>  	/*
>  	 * unregister_event() callback will be called when userspace
>  	 * closes the eventfd or on cgroup removing.
>  	 * This callback must be implemented, if you want provide
>  	 * notification functionality.
>  	 */
> -	void (*unregister_event)(struct cgroup *cgrp, struct cftype *cft,
> +	void (*unregister_event)(struct cgroup_subsys_state *css,
> +				 struct cftype *cft,
>  			struct eventfd_ctx *eventfd);

align this line?

>  };

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