linux-kernel - Re: [PATCH] ext4: remove dead code in updating backup sb

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Date:   Mon, 2 Jan 2023 17:41:41 +0100
From:   Jan Kara <jack@...e.cz>
To:     Tanmay Bhushan <007047221b@...il.com>
Cc:     Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ext4: remove dead code in updating backup sb

On Fri 30-12-22 15:18:58, Tanmay Bhushan wrote:
> ext4_update_backup_sb checks for err having some value
> after unlocking buffer. But err has not been updated
> till that point in any code which will lead execution
> of the code in question.
> 
> Signed-off-by: Tanmay Bhushan <007047221b@...il.com>

Looks good to me. Feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  fs/ext4/ioctl.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
> index 8067ccda34e4..2e8c34036313 100644
> --- a/fs/ext4/ioctl.c
> +++ b/fs/ext4/ioctl.c
> @@ -155,9 +155,6 @@ static int ext4_update_backup_sb(struct super_block *sb,
>  	set_buffer_uptodate(bh);
>  	unlock_buffer(bh);
>  
> -	if (err)
> -		goto out_bh;
> -
>  	if (handle) {
>  		err = ext4_handle_dirty_metadata(handle, NULL, bh);
>  		if (err)
> -- 
> 2.34.1
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR