linux-ext4 - Re: [PATCH] fs: ext4: remove unused variable warning in parse

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Message-Id: <20191112162341.E3F334204C@d06av24.portsmouth.uk.ibm.com>
Date:   Tue, 12 Nov 2019 21:53:39 +0530
From:   Ritesh Harjani <riteshh@...ux.ibm.com>
To:     Olof Johansson <olof@...om.net>, tytso@....edu,
        adilger.kernel@...ger.ca
Cc:     linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jan Kara <jack@...e.cz>
Subject: Re: [PATCH] fs: ext4: remove unused variable warning in
 parse_options()



On 11/11/19 7:55 AM, Olof Johansson wrote:
> Commit c33fbe8f673c5 ("ext4: Enable blocksize < pagesize for
> dioread_nolock") removed the only user of 'sbi' outside of the ifdef,
> so it caused a new warning:
> 
> fs/ext4/super.c:2068:23: warning: unused variable 'sbi' [-Wunused-variable]
> 
> Fixes: c33fbe8f673c5 ("ext4: Enable blocksize < pagesize for dioread_nolock")
> Signed-off-by: Olof Johansson <olof@...om.net>

hmm, I see that I had CONFIG_QUOTA enabled, so missed this.
Thanks for the patch.

You may add:
Reviewed-by: Ritesh Harjani <riteshh@...ux.ibm.com>

> ---
>   fs/ext4/super.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index f3279210f0ba9..ee8c42d8a04f0 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -2065,7 +2065,7 @@ static int parse_options(char *options, struct super_block *sb,
>   			 unsigned int *journal_ioprio,
>   			 int is_remount)
>   {
> -	struct ext4_sb_info *sbi = EXT4_SB(sb);
> +	struct ext4_sb_info __maybe_unused *sbi = EXT4_SB(sb);
>   	char *p, __maybe_unused *usr_qf_name, __maybe_unused *grp_qf_name;
>   	substring_t args[MAX_OPT_ARGS];
>   	int token;
>