linux-kernel - Re: [RFC PATCH v1 1/8] zram: simplify and optimize zram_to

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Date:	Tue, 04 Jun 2013 15:09:05 +0200
From:	Jerome Marchand <jmarchan@...hat.com>
To:	Jiang Liu <liuj97@...il.com>
CC:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Nitin Gupta <ngupta@...are.org>,
	Minchan Kim <minchan@...nel.org>,
	Yijing Wang <wangyijing@...wei.com>,
	Jiang Liu <jiang.liu@...wei.com>, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v1 1/8] zram: simplify and optimize zram_to_dev()

Hi,

Please write a commit message, no matter how straightforward a patch may
seem to you.
Also the subject suffers from dyslexia: it's dev_to_zram, not zram_to_dev.

Thanks,
Jerome

On 06/03/2013 05:42 PM, Jiang Liu wrote:
> Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
> ---
>  drivers/staging/zram/zram_sysfs.c | 13 ++-----------
>  1 file changed, 2 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/staging/zram/zram_sysfs.c b/drivers/staging/zram/zram_sysfs.c
> index e6a929d..8cb7822 100644
> --- a/drivers/staging/zram/zram_sysfs.c
> +++ b/drivers/staging/zram/zram_sysfs.c
> @@ -30,18 +30,9 @@ static u64 zram_stat64_read(struct zram *zram, u64 *v)
>  	return val;
>  }
>  
> -static struct zram *dev_to_zram(struct device *dev)
> +static inline struct zram *dev_to_zram(struct device *dev)
>  {
> -	int i;
> -	struct zram *zram = NULL;
> -
> -	for (i = 0; i < zram_get_num_devices(); i++) {
> -		zram = &zram_devices[i];
> -		if (disk_to_dev(zram->disk) == dev)
> -			break;
> -	}
> -
> -	return zram;
> +	return (struct zram *)dev_to_disk(dev)->private_data;
>  }
>  
>  static ssize_t disksize_show(struct device *dev,
> 

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