linux-kernel - Re: [PATCH 3/3] cpuset: two minor code-cleanups

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Message-ID: <6599ad830807160021n2d09a7c3mfc3122e7be768db5@mail.gmail.com>
Date:	Wed, 16 Jul 2008 00:21:20 -0700
From:	"Paul Menage" <menage@...gle.com>
To:	"Lai Jiangshan" <laijs@...fujitsu.com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Paul Jackson" <pj@....com>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] cpuset: two minor code-cleanups

On Tue, Jul 15, 2008 at 8:43 PM, Lai Jiangshan <laijs@...fujitsu.com> wrote:
> in function cpuset_update_task_memory_state()
> local variable
> struct task_struct *tsk = current;
>
> and local variable tsk is used 14 times and
> statement task_cs(tsk) is used twice in this function.
> So using task_cs(tsk) instead of task_cs(current) is
> better for readability.
>
> And "(struct cgroup_scanner *)&scan" is not good for
> readability also. (and "container_of" is used in cpuset_do_move_task(),
> not "(cpuset_hotplug_scanner *)scan")
>
> Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>

Acked-by: Paul Menage <menage@...gle.com>

Thanks.

> ---
> diff --git a/kernel/cpuset.c b/kernel/cpuset.c
> index 798b3ab..4513deb 100644
> --- a/kernel/cpuset.c
> +++ b/kernel/cpuset.c
> @@ -369,7 +369,7 @@ void cpuset_update_task_memory_state(void)
>                my_cpusets_mem_gen = top_cpuset.mems_generation;
>        } else {
>                rcu_read_lock();
> -               my_cpusets_mem_gen = task_cs(current)->mems_generation;
> +               my_cpusets_mem_gen = task_cs(tsk)->mems_generation;
>                rcu_read_unlock();
>        }
>
> @@ -1778,7 +1778,7 @@ static void move_member_tasks_to_cpuset(struct cpuset *from, struct cpuset *to)
>        scan.scan.heap = NULL;
>        scan.to = to->css.cgroup;
>
> -       if (cgroup_scan_tasks((struct cgroup_scanner *)&scan))
> +       if (cgroup_scan_tasks(&scan.scan))
>                printk(KERN_ERR "move_member_tasks_to_cpuset: "
>                                "cgroup_scan_tasks failed\n");
>  }
>
>
>
>
>
>
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