linux-kernel - Re: [PATCH 2/4] staging: lustre: ldlm: constify attribute

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Date:   Mon, 17 Jul 2017 13:12:29 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     oleg.drokin@...el.com, andreas.dilger@...el.com,
        jsimmons@...radead.org, gregkh@...uxfoundation.org,
        lustre-devel@...ts.lustre.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Cc:     john.hammond@...el.com, dmitry.eremin@...el.com, fan.yong@...el.com
Subject: Re: [PATCH 2/4] staging: lustre: ldlm: constify attribute_group
 structures.

Sorry for noise. Please ignore this.

~arvind


On Monday 17 July 2017 11:18 AM, 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.
>
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
> ---
>   drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c b/drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c
> index fff930f..e0c3e5d 100644
> --- a/drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c
> +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c
> @@ -926,7 +926,7 @@ static ssize_t cancel_unused_locks_before_replay_store(struct kobject *kobj,
>   	NULL,
>   };
>   
> -static struct attribute_group ldlm_attr_group = {
> +static const struct attribute_group ldlm_attr_group = {
>   	.attrs = ldlm_attrs,
>   };
>