linux-kernel - Re: [f2fs-dev] [PATCH -next] f2fs: remove set but not used variable 'params'

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Date:   Thu, 2 Apr 2020 17:14:15 +0800
From:   Jason Yan <yanaijie@...wei.com>
To:     Chao Yu <yuchao0@...wei.com>, <jaegeuk@...nel.org>,
        <chao@...nel.org>, <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [f2fs-dev] [PATCH -next] f2fs: remove set but not used variable
 'params'

Hi Chao,

在 2020/4/2 16:37, Chao Yu 写道:
> Hi Jason,
> 
> On 2020/4/2 14:15, Jason Yan wrote:
>> Fix the following gcc warning:
>>
>> fs/f2fs/compress.c:375:18: warning: variable 'params' set but not used [-Wunused-but-set-variable]
>>    ZSTD_parameters params;
>>                    ^~~~~~
>>
>> Reported-by: Hulk Robot <hulkci@...wei.com>
>> Signed-off-by: Jason Yan <yanaijie@...wei.com>
> 
> Thanks for the patch, would you mind that just merge this fix into
> original path which is still in f2fs private git tree?
> 

It's ok to merge this into the original patch.

> Thanks,
> 
>> ---
>>   fs/f2fs/compress.c | 2 --
>>   1 file changed, 2 deletions(-)
>>
>> diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
>> index f05ecf4cb899..df7b2d15eacd 100644
>> --- a/fs/f2fs/compress.c
>> +++ b/fs/f2fs/compress.c
>> @@ -372,12 +372,10 @@ static int zstd_compress_pages(struct compress_ctx *cc)
>>   
>>   static int zstd_init_decompress_ctx(struct decompress_io_ctx *dic)
>>   {
>> -	ZSTD_parameters params;
>>   	ZSTD_DStream *stream;
>>   	void *workspace;
>>   	unsigned int workspace_size;
>>   
>> -	params = ZSTD_getParams(F2FS_ZSTD_DEFAULT_CLEVEL, dic->clen, 0);
>>   	workspace_size = ZSTD_DStreamWorkspaceBound(MAX_COMPRESS_WINDOW_SIZE);
>>   
>>   	workspace = f2fs_kvmalloc(F2FS_I_SB(dic->inode),
>>
> 
> .
>