Re: [f2fs-dev] [PATCH 1/2 v2] f2fs: report ENOENT correct in f2fs_rename

From: Chao Yu
Date: Thu Sep 20 2018 - 02:14:40 EST


On 2018/9/20 6:50, Jaegeuk Kim wrote:
> This fixes wrong error report in f2fs_rename.
>
> Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
> ---
> Change log from v1:
> - cover rename2 case
>
> fs/f2fs/namei.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
> index 98d3ab7c3ce6..48f919469151 100644
> --- a/fs/f2fs/namei.c
> +++ b/fs/f2fs/namei.c
> @@ -833,7 +833,7 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
> struct f2fs_dir_entry *old_entry;
> struct f2fs_dir_entry *new_entry;
> bool is_old_inline = f2fs_has_inline_dentry(old_dir);
> - int err = -ENOENT;
> + int err;
>
> if (unlikely(f2fs_cp_error(sbi)))
> return -EIO;
> @@ -854,6 +854,7 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
> if (err)
> goto out;
>
> + err = -ENOENT;

It should be assigned after dquot_initialize(), otherwise, err's value can
still be reset to 0 due to dquot_initialize().

> if (new_inode) {
> err = dquot_initialize(new_inode);
> if (err)
> @@ -1049,6 +1050,7 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
> if (err)
> goto out;
>
> + err = -ENOENT;

We can remove err initialization like f2fs_rename()

int err;

Thanks,

> old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
> if (!old_entry) {
> if (IS_ERR(old_page))
>