linux-kernel - Re: [PATCH v2 01/10] zram: kill unused zram_get_num

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Date:	Wed, 5 Jun 2013 14:52:42 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Jiang Liu <liuj97@...il.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Nitin Gupta <ngupta@...are.org>,
	Jerome Marchand <jmarchan@...hat.com>,
	Yijing Wang <wangyijing@...wei.com>,
	Jiang Liu <jiang.liu@...wei.com>, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 01/10] zram: kill unused zram_get_num_devices()

Hello,

On Wed, Jun 05, 2013 at 12:05:59AM +0800, Jiang Liu wrote:
> Now there's no caller of zram_get_num_devices(), so kill it.
> And change zram_devices to static because it's only used in zram_drv.c.
> 
> Signed-off-by: Jiang Liu <jiang.liu@...wei.com>

I am looking at next-20130604 and am still seeing that dev_to_zram is using it.
Maybe I expect Greg picked your eariler patch yesterday but I didn't Cced and
your patchset doesn't say anything about that although your patchset's title
says it's v2. So I'd like to make it clear.

Thanks.

> ---
>  drivers/staging/zram/zram_drv.c | 7 +------
>  drivers/staging/zram/zram_drv.h | 2 --
>  2 files changed, 1 insertion(+), 8 deletions(-)
> 
> diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c
> index e34e3fe..0a07de4 100644
> --- a/drivers/staging/zram/zram_drv.c
> +++ b/drivers/staging/zram/zram_drv.c
> @@ -37,7 +37,7 @@
>  
>  /* Globals */
>  static int zram_major;
> -struct zram *zram_devices;
> +static struct zram *zram_devices;
>  
>  /* Module params (documentation at end) */
>  static unsigned int num_devices = 1;
> @@ -669,11 +669,6 @@ static void destroy_device(struct zram *zram)
>  		blk_cleanup_queue(zram->queue);
>  }
>  
> -unsigned int zram_get_num_devices(void)
> -{
> -	return num_devices;
> -}
> -
>  static int __init zram_init(void)
>  {
>  	int ret, dev_id;
> diff --git a/drivers/staging/zram/zram_drv.h b/drivers/staging/zram/zram_drv.h
> index 2d1a3f1..a18b66d 100644
> --- a/drivers/staging/zram/zram_drv.h
> +++ b/drivers/staging/zram/zram_drv.h
> @@ -109,8 +109,6 @@ struct zram {
>  	struct zram_stats stats;
>  };
>  
> -extern struct zram *zram_devices;
> -unsigned int zram_get_num_devices(void);
>  #ifdef CONFIG_SYSFS
>  extern struct attribute_group zram_disk_attr_group;
>  #endif
> -- 
> 1.8.1.2
> 
> --
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-- 
Kind regards,
Minchan Kim
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