linux-ext4 - Re: [PATCH] ext2: initialize quota info in ext2_xattr

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Date:   Wed, 8 Jul 2020 16:22:01 +0530
From:   Ritesh Harjani <riteshh@...ux.ibm.com>
To:     Chengguang Xu <cgxu519@...ernel.net>, jack@...e.com
Cc:     linux-ext4@...r.kernel.org
Subject: Re: [PATCH] ext2: initialize quota info in ext2_xattr_set()



On 6/26/20 11:19 AM, Chengguang Xu wrote:
> In order to correctly account/limit space usage, should initialize
> quota info before calling quota related functions.

How did you encounter the problem?
Any test case got hit?

> 
> Signed-off-by: Chengguang Xu <cgxu519@...ernel.net>

LGTM, feel free to add
Reviewed-by: Reviewed-by: Ritesh Harjani <riteshh@...ux.ibm.com>


> ---
>   fs/ext2/xattr.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
> index 943cc469f42f..913e5c4921ec 100644
> --- a/fs/ext2/xattr.c
> +++ b/fs/ext2/xattr.c
> @@ -437,6 +437,9 @@ ext2_xattr_set(struct inode *inode, int name_index, const char *name,
>   	name_len = strlen(name);
>   	if (name_len > 255 || value_len > sb->s_blocksize)
>   		return -ERANGE;
> +	error = dquot_initialize(inode);
> +	if (error)
> +		return error;
>   	down_write(&EXT2_I(inode)->xattr_sem);
>   	if (EXT2_I(inode)->i_file_acl) {
>   		/* The inode already has an extended attribute block. */
>