linux-kernel - Re: [PATCH RESEND] staging: erofs: return the error value if fill_inline

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Message-ID: <a503962c-0d06-d186-3230-b208410939b0@huawei.com>
Date:   Wed, 26 Jun 2019 17:02:48 +0800
From:   Gao Xiang <gaoxiang25@...wei.com>
To:     Yue Hu <zbestahu@...il.com>, <yuchao0@...wei.com>,
        <gregkh@...uxfoundation.org>
CC:     <linux-erofs@...ts.ozlabs.org>, <devel@...verdev.osuosl.org>,
        <linux-kernel@...r.kernel.org>, <huyue2@...ong.com>,
        Miao Xie <miaoxie@...wei.com>
Subject: Re: [PATCH RESEND] staging: erofs: return the error value if
 fill_inline_data() fails

Hi Yue,

On 2019/6/26 11:30, Yue Hu wrote:
> From: Yue Hu <huyue2@...ong.com>
> 
> We should consider the error returned by fill_inline_data() when filling
> last page in fill_inode(). If not getting inode will be successful even
> though last page is bad. That is illogical. Also change -EAGAIN to 0 in
> fill_inline_data() to stand for successful filling.
> 
> Signed-off-by: Yue Hu <huyue2@...ong.com>

ditto, add the tags from other guyes.

Thanks,
Gao Xiang

> ---
>  drivers/staging/erofs/inode.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/erofs/inode.c b/drivers/staging/erofs/inode.c
> index d6e1e16..1433f25 100644
> --- a/drivers/staging/erofs/inode.c
> +++ b/drivers/staging/erofs/inode.c
> @@ -156,7 +156,7 @@ static int fill_inline_data(struct inode *inode, void *data,
>  		inode->i_link = lnk;
>  		set_inode_fast_symlink(inode);
>  	}
> -	return -EAGAIN;
> +	return 0;
>  }
>  
>  static int fill_inode(struct inode *inode, int isdir)
> @@ -223,7 +223,7 @@ static int fill_inode(struct inode *inode, int isdir)
>  		inode->i_mapping->a_ops = &erofs_raw_access_aops;
>  
>  		/* fill last page if inline data is available */
> -		fill_inline_data(inode, data, ofs);
> +		err = fill_inline_data(inode, data, ofs);
>  	}
>  
>  out_unlock:
>