linux-kernel - Re: [PATCH -next] ceph: replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS

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Message-ID: <1407bfb44b60b3cdd704e48d85754c18693c925f.camel@kernel.org>
Date:   Wed, 23 Mar 2022 06:17:49 -0400
From:   Jeff Layton <jlayton@...nel.org>
To:     Yang Li <yang.lee@...ux.alibaba.com>
Cc:     xiubli@...hat.com, idryomov@...il.com, ceph-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org, Abaci Robot <abaci@...ux.alibaba.com>
Subject: Re: [PATCH -next] ceph: replace DEFINE_SIMPLE_ATTRIBUTE with
 DEFINE_DEBUGFS_ATTRIBUTE

On Wed, 2022-03-23 at 07:53 +0800, Yang Li wrote:
> Fix the following coccicheck warning:
> ./fs/ceph/debugfs.c:389:0-23: WARNING: congestion_kb_fops should be
> defined with DEFINE_DEBUGFS_ATTRIBUTE
> 
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
> ---
>  fs/ceph/debugfs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c
> index bec3c4549c07..05d15a0bbd9b 100644
> --- a/fs/ceph/debugfs.c
> +++ b/fs/ceph/debugfs.c
> @@ -386,7 +386,7 @@ static int congestion_kb_get(void *data, u64 *val)
>  	return 0;
>  }
>  
> -DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
> +DEFINE_DEBUGFS_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
>  			congestion_kb_set, "%llu\n");
>  
>  

I think you're the 4th person to propose this patch. Here are the three
prior postings:

    https://lore.kernel.org/ceph-devel/1577111958-100981-1-git-send-email-chenwandun@huawei.com/
    https://lore.kernel.org/ceph-devel/1612165930-110076-1-git-send-email-jiapeng.chong@linux.alibaba.com/
    https://lore.kernel.org/ceph-devel/20211221143614.480385-1-deng.changcheng@zte.com.cn/

It's not as simple as doing a 1:1 conversion like this. Please look at
the threads above and offer a revised patch or let us know whether you
want us to drop this one.

Thanks,
-- 
Jeff Layton <jlayton@...nel.org>