linux-kernel - Re: [PATCH] drivers/dax/bus: Use kobj_to

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Date:   Sun, 31 May 2020 22:45:15 -0700
From:   Ira Weiny <ira.weiny@...el.com>
To:     Shuai He <hexiaoshuaishuai@...il.com>
Cc:     dan.j.williams@...el.com, vishal.l.verma@...el.com,
        dave.jiang@...el.com, linux-nvdimm@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers/dax/bus: Use kobj_to_dev() API

On Fri, May 29, 2020 at 11:42:57AM +0800, Shuai He wrote:
> Use kobj_to_dev() API instead of container_of().
> 
> Signed-off-by: Shuai He <hexiaoshuaishuai@...il.com>

Seems reasonable:
Reviewed-by: Ira Weiny <ira.weiny@...el.com>

> ---
>  drivers/dax/bus.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c
> index df238c8..24625d2 100644
> --- a/drivers/dax/bus.c
> +++ b/drivers/dax/bus.c
> @@ -331,7 +331,7 @@ static DEVICE_ATTR_RO(numa_node);
>  
>  static umode_t dev_dax_visible(struct kobject *kobj, struct attribute *a, int n)
>  {
> -	struct device *dev = container_of(kobj, struct device, kobj);
> +	struct device *dev = kobj_to_dev(kobj);
>  	struct dev_dax *dev_dax = to_dev_dax(dev);
>  
>  	if (a == &dev_attr_target_node.attr && dev_dax_target_node(dev_dax) < 0)
> -- 
> 2.7.4
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