linux-kernel - Re: [PATCH] fault-inject: use DEFINE_DEBUGFS

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Message-ID: <5DB97D91.1010500@huawei.com>
Date:   Wed, 30 Oct 2019 20:09:53 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     Akinobu Mita <akinobu.mita@...il.com>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] fault-inject: use DEFINE_DEBUGFS_ATTRIBUTE to define
 debugfs fops

On 2019/10/30 18:29, Akinobu Mita wrote:
> 2019年10月30日(水) 17:26 zhong jiang <zhongjiang@...wei.com>:
>> It is more clear to use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs file
>> operation rather than DEFINE_SIMPLE_ATTRIBUTE.
>>
>> Signed-off-by: zhong jiang <zhongjiang@...wei.com>
>> ---
>>  lib/fault-inject.c | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/lib/fault-inject.c b/lib/fault-inject.c
>> index 8186ca8..4e61326 100644
>> --- a/lib/fault-inject.c
>> +++ b/lib/fault-inject.c
>> @@ -164,7 +164,7 @@ static int debugfs_ul_get(void *data, u64 *val)
>>         return 0;
>>  }
>>
>> -DEFINE_SIMPLE_ATTRIBUTE(fops_ul, debugfs_ul_get, debugfs_ul_set, "%llu\n");
>> +DEFINE_DEBUGFS_ATTRIBUTE(fops_ul, debugfs_ul_get, debugfs_ul_set, "%llu\n");
>>
>>  static void debugfs_create_ul(const char *name, umode_t mode,
>>                               struct dentry *parent, unsigned long *value)
> Nowadays we have debugfs_create_ulong(), so should we use it instead of
> debugfs_create_ul() defined in this file and remove the definision
> altogether?
>
> .
yes, you are right. That is better. I will repost in v2. Thanks

Sincerely,
zhong jiang
>