linux-kernel - Re: [PATCH] fs/ntfs3: Remove unused variable cnt in ntfs_security

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Message-ID: <20210816233605.w2csfyhmebicw6k7@kari-VirtualBox>
Date:   Tue, 17 Aug 2021 02:36:05 +0300
From:   Kari Argillander <kari.argillander@...il.com>
To:     Nathan Chancellor <nathan@...nel.org>
Cc:     Konstantin Komarov <almaz.alexandrovich@...agon-software.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        ntfs3@...ts.linux.dev, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com
Subject: Re: [PATCH] fs/ntfs3: Remove unused variable cnt in
 ntfs_security_init()

On Mon, Aug 16, 2021 at 12:30:41PM -0700, Nathan Chancellor wrote:
> Clang warns:
> 
> fs/ntfs3/fsntfs.c:1874:9: warning: variable 'cnt' set but not used
> [-Wunused-but-set-variable]
>         size_t cnt, off;
>                ^
> 1 warning generated.
> 
> It is indeed unused so remove it.
> 
> Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
> Signed-off-by: Nathan Chancellor <nathan@...nel.org>

Looks like it was used for debugging or way before index_find_raw()
needed hint or something. So this should be ok.

Reviewed-by: Kari Argillander <kari.argillander@...il.com>

> ---
>  fs/ntfs3/fsntfs.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/fs/ntfs3/fsntfs.c b/fs/ntfs3/fsntfs.c
> index 92140050fb6c..c6599c514acf 100644
> --- a/fs/ntfs3/fsntfs.c
> +++ b/fs/ntfs3/fsntfs.c
> @@ -1871,7 +1871,7 @@ int ntfs_security_init(struct ntfs_sb_info *sbi)
>  	struct ATTRIB *attr;
>  	struct ATTR_LIST_ENTRY *le;
>  	u64 sds_size;
> -	size_t cnt, off;
> +	size_t off;
>  	struct NTFS_DE *ne;
>  	struct NTFS_DE_SII *sii_e;
>  	struct ntfs_fnd *fnd_sii = NULL;
> @@ -1946,7 +1946,6 @@ int ntfs_security_init(struct ntfs_sb_info *sbi)
>  	sbi->security.next_off =
>  		Quad2Align(sds_size - SecurityDescriptorsBlockSize);
>  
> -	cnt = 0;
>  	off = 0;
>  	ne = NULL;
>  
> @@ -1964,8 +1963,6 @@ int ntfs_security_init(struct ntfs_sb_info *sbi)
>  		next_id = le32_to_cpu(sii_e->sec_id) + 1;
>  		if (next_id >= sbi->security.next_id)
>  			sbi->security.next_id = next_id;
> -
> -		cnt += 1;
>  	}
>  
>  	sbi->security.ni = ni;
> 
> base-commit: 96b18047a7172037ff4206720f4e889670030b41
> -- 
> 2.33.0.rc2
> 
>