linux-kernel - Re: [PATCH v2 3/8] erofs: simplify erofs_xattr_generic

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Message-ID: <20230331142431.00003145.zbestahu@gmail.com>
Date:   Fri, 31 Mar 2023 14:24:31 +0800
From:   Yue Hu <zbestahu@...il.com>
To:     Jingbo Xu <jefflexu@...ux.alibaba.com>
Cc:     xiang@...nel.org, chao@...nel.org, linux-erofs@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, huyue2@...lpad.com,
        zhangwen@...lpad.com
Subject: Re: [PATCH v2 3/8] erofs: simplify erofs_xattr_generic_get()

On Thu, 30 Mar 2023 16:29:05 +0800
Jingbo Xu <jefflexu@...ux.alibaba.com> wrote:

> erofs_xattr_generic_get() won't be called from xattr handlers other than
> user/trusted/security xattr handler, and thus there's no need of extra
> checking.
> 
> Signed-off-by: Jingbo Xu <jefflexu@...ux.alibaba.com>
> Reviewed-by: Gao Xiang <hsiangkao@...ux.alibaba.com>

Reviewed-by: Yue Hu <huyue2@...lpad.com>

> ---
>  fs/erofs/xattr.c | 17 +++--------------
>  1 file changed, 3 insertions(+), 14 deletions(-)
> 
> diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c
> index dc36a0c0919c..d76b74ece2e5 100644
> --- a/fs/erofs/xattr.c
> +++ b/fs/erofs/xattr.c
> @@ -432,20 +432,9 @@ static int erofs_xattr_generic_get(const struct xattr_handler *handler,
>  				   struct dentry *unused, struct inode *inode,
>  				   const char *name, void *buffer, size_t size)
>  {
> -	struct erofs_sb_info *const sbi = EROFS_I_SB(inode);
> -
> -	switch (handler->flags) {
> -	case EROFS_XATTR_INDEX_USER:
> -		if (!test_opt(&sbi->opt, XATTR_USER))
> -			return -EOPNOTSUPP;
> -		break;
> -	case EROFS_XATTR_INDEX_TRUSTED:
> -		break;
> -	case EROFS_XATTR_INDEX_SECURITY:
> -		break;
> -	default:
> -		return -EINVAL;
> -	}
> +	if (handler->flags == EROFS_XATTR_INDEX_USER &&
> +	    !test_opt(&EROFS_I_SB(inode)->opt, XATTR_USER))
> +		return -EOPNOTSUPP;
>  
>  	return erofs_getxattr(inode, handler->flags, name, buffer, size);
>  }