[PATCH] Unused check for thread group leader in mem_cgroup_move_task

[KAMEZAWA Hiroyuki]

On Mon, 1 Dec 2008 09:51:35 +0530
Nikanth Karthikesan <knikanth at suse.de> wrote:

> Ok. Then should we remove the unused code which simply checks for thread group 
> leader but does nothing?
>  
> Thanks
> Nikanth
> 
Hmm, it seem that code is obsolete. thanks.
Balbir, how do you think ?

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu at jp.fujitsu.com>

Anyway we have to visit here, again.


> Remove the unused test for thread group leader in mem_cgroup_move_task.
> 
> Signed-off-by: Nikanth Karthikesan <knikanth at suse.de>
> 
> ---
> 
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 866dcc7..8e9287d 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -1151,14 +1151,6 @@ static void mem_cgroup_move_task(struct cgroup_subsys 
> *ss,
>  	mem = mem_cgroup_from_cont(cont);
>  	old_mem = mem_cgroup_from_cont(old_cont);
>  
> -	/*
> -	 * Only thread group leaders are allowed to migrate, the mm_struct is
> -	 * in effect owned by the leader
> -	 */
> -	if (!thread_group_leader(p))
> -		goto out;
> -
> -out:
>  	mmput(mm);
>  }
>  
> 
>