linux-kernel - Re: [PATCH v5 4/6] erofs: make the size of read data stored in buffer

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Date:   Thu, 1 Jun 2023 11:29:58 +0800
From:   Gao Xiang <hsiangkao@...ux.alibaba.com>
To:     Jingbo Xu <jefflexu@...ux.alibaba.com>, xiang@...nel.org,
        chao@...nel.org, huyue2@...lpad.com, linux-erofs@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 4/6] erofs: make the size of read data stored in
 buffer_ofs



On 2023/6/1 10:43, Jingbo Xu wrote:
> Since now xattr_iter structures have been unified, make the size of the
> read data stored in buffer_ofs.  Don't bother reusing buffer_size for
> this use, which may be confusing.
> 
> This is in preparation for the following further cleanup.
> 
> Signed-off-by: Jingbo Xu <jefflexu@...ux.alibaba.com>

Reviewed-by: Gao Xiang <hsiangkao@...ux.alibaba.com>

Thanks,
Gao Xiang

> ---
>   fs/erofs/xattr.c | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c
> index a691d539ae4f..19f9bf67440c 100644
> --- a/fs/erofs/xattr.c
> +++ b/fs/erofs/xattr.c
> @@ -337,7 +337,7 @@ static int xattr_checkbuffer(struct erofs_xattr_iter *it,
>   {
>   	int err = it->buffer_size < value_sz ? -ERANGE : 0;
>   
> -	it->buffer_size = value_sz;
> +	it->buffer_ofs = value_sz;
>   	return !it->buffer ? 1 : err;
>   }
>   
> @@ -370,7 +370,7 @@ static int inline_getxattr(struct inode *inode, struct erofs_xattr_iter *it)
>   		if (ret != -ENOATTR)
>   			break;
>   	}
> -	return ret ? ret : it->buffer_size;
> +	return ret ? ret : it->buffer_ofs;
>   }
>   
>   static int shared_getxattr(struct inode *inode, struct erofs_xattr_iter *it)
> @@ -392,7 +392,7 @@ static int shared_getxattr(struct inode *inode, struct erofs_xattr_iter *it)
>   		if (ret != -ENOATTR)
>   			break;
>   	}
> -	return ret ? ret : it->buffer_size;
> +	return ret ? ret : it->buffer_ofs;
>   }
>   
>   static bool erofs_xattr_user_list(struct dentry *dentry)