linux-kernel - Re: [PATCH] fs/ntfs3: remove redundant assignment to variable vcn

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Message-ID: <d8ff3d09-ac85-da53-c638-30135c9eb6c2@paragon-software.com>
Date:   Wed, 8 Jun 2022 18:28:49 +0300
From:   Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
To:     Colin Ian King <colin.i.king@...il.com>, <ntfs3@...ts.linux.dev>
CC:     <kernel-janitors@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <llvm@...ts.linux.dev>
Subject: Re: [PATCH] fs/ntfs3: remove redundant assignment to variable vcn



On 4/18/22 17:00, Colin Ian King wrote:
> Variable vcn is being assigned a value that is never read, it is
> being re-assigned again in the initialization of a for-loop.  The
> assignment is redundant and can be removed.
> 
> Cleans up clang scan build warning:
> fs/ntfs3/attrib.c:1176:7: warning: Value stored to 'vcn' during its
> initialization is never read [deadcode.DeadStores]
> 
> Signed-off-by: Colin Ian King <colin.i.king@...il.com>
> ---
>   fs/ntfs3/attrib.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/ntfs3/attrib.c b/fs/ntfs3/attrib.c
> index e8c00dda42ad..fc0623b029e6 100644
> --- a/fs/ntfs3/attrib.c
> +++ b/fs/ntfs3/attrib.c
> @@ -1173,7 +1173,7 @@ int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type,
>   {
>   	struct ntfs_sb_info *sbi = ni->mi.sbi;
>   	u8 cluster_bits = sbi->cluster_bits;
> -	CLST vcn = from >> cluster_bits;
> +	CLST vcn;
>   	CLST vcn_last = (to - 1) >> cluster_bits;
>   	CLST lcn, clen;
>   	int err;

Thanks for patch, applied!