linux-ext4 - Re: [PATCH] ext4: remove QUOTA flag setting in set_qf

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Date:   Mon, 8 Oct 2018 21:50:53 -0400
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     Chengguang Xu <cgxu519@....com>
Cc:     adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org
Subject: Re: [PATCH] ext4: remove QUOTA flag setting in set_qf_name()

On Tue, Oct 09, 2018 at 07:50:13AM +0800, Chengguang Xu wrote:
> Mount flag QUOTA is the same as flag USRQUOTA in ext4, so should
> not set flag QUOTA in set_qf_name().
> 
> Signed-off-by: Chengguang Xu <cgxu519@....com>
> ---
>  fs/ext4/super.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index 1145109968ef..9ed33e4860db 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -1566,7 +1566,6 @@ static int set_qf_name(struct super_block *sb, int qtype, substring_t *args)
>  		goto errout;
>  	}
>  	sbi->s_qf_names[qtype] = qname;
> -	set_opt(sb, QUOTA);

No, sorry.  This is still needed so that the usrjquota and the
grpjquota mount options will work correctly.  And it's not like
set_qf_name() is a performance hot path.

					- Ted