linux-kernel - Re: [PATCH] zram: constify attribute

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Message-ID: <20170703062709.GA14258@bbox>
Date:   Mon, 3 Jul 2017 15:27:09 +0900
From:   Minchan Kim <minchan@...nel.org>
To:     Arvind Yadav <arvind.yadav.cs@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     ngupta@...are.org, sergey.senozhatsky.work@...il.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] zram: constify attribute_group structures.

Hello,

On Mon, Jul 03, 2017 at 11:43:13AM +0530, Arvind Yadav wrote:
> attribute_groups are not supposed to change at runtime. All functions
> working with attribute_groups provided by <linux/sysfs.h> work with const
> attribute_group. So mark the non-const structs as const.

If so, how about changing all of places where not have used const
as well as zram?

Anyway, I'm okay with this.

> 
> File size before:
>    text	   data	    bss	    dec	    hex	filename
>    8293	    841	      4	   9138	   23b2	drivers/block/zram/zram_drv.o
> 
> File size After adding 'const':
>    text	   data	    bss	    dec	    hex	filename
>    8357	    777	      4	   9138	   23b2	drivers/block/zram/zram_drv.o
> 
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
Acked-by: Minchan Kim <minchan@...nel.org>

Thanks.