linux-kernel - Re: [PATCH] f2fs: hide unused procfs helpers

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Date:   Fri, 13 Jul 2018 17:17:54 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     Chao Yu <yuchao0@...wei.com>, <jaegeuk@...nel.org>
CC:     <linux-kernel@...r.kernel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>
Subject: Re: [PATCH] f2fs: hide unused procfs helpers



On 2018/7/13 17:02, Chao Yu wrote:
> Hello,
> 
> On 2018/7/13 11:53, YueHaibing wrote:
>> When CONFIG_PROC_FS isn't set, gcc warning this:
>>
>> fs/f2fs/sysfs.c:519:12: warning: ‘segment_info_seq_show’ defined but not used [-Wunused-function]
>>  static int segment_info_seq_show(struct seq_file *seq, void *offset)
>>             ^
>> fs/f2fs/sysfs.c:546:12: warning: ‘segment_bits_seq_show’ defined but not used [-Wunused-function]
>>  static int segment_bits_seq_show(struct seq_file *seq, void *offset)
>>             ^
>> fs/f2fs/sysfs.c:570:12: warning: ‘iostat_info_seq_show’ defined but not used [-Wunused-function]
>>  static int iostat_info_seq_show(struct seq_file *seq, void *offset)
>>
>> We can fix the warning by adding the same #ifdef around them.
> 
> Could you check below patch sent from Randy Dunlap? It has already fixed this
> issue, anyway, thanks for your patch. :)
> 
> [PATCH] f2fs: fix defined but not used build warnings

thank you for your information.
> 
> Thanks,
> 
>>
>> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
>> ---
>>  fs/f2fs/sysfs.c | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
>> index 2e7e611..7d45e65 100644
>> --- a/fs/f2fs/sysfs.c
>> +++ b/fs/f2fs/sysfs.c
>> @@ -516,6 +516,7 @@ static struct kobject f2fs_feat = {
>>  	.kset	= &f2fs_kset,
>>  };
>>  
>> +#ifdef CONFIG_PROC_FS
>>  static int segment_info_seq_show(struct seq_file *seq, void *offset)
>>  {
>>  	struct super_block *sb = seq->private;
>> @@ -608,6 +609,7 @@ static int iostat_info_seq_show(struct seq_file *seq, void *offset)
>>  
>>  	return 0;
>>  }
>> +#endif
>>  
>>  int __init f2fs_init_sysfs(void)
>>  {
>>
> 
> 
> .
>