Hi,

On 06/26, Sheng Yong wrote:
> After renaming a directory, fsck could detect unmatched pino. The scenario
> can be reproduced as the following:
> 
>       $ mkdir /bar/subbar /foo
>       $ rename /bar/subbar /foo
> 
> Then fsck will report:
> [ASSERT] (__chk_dots_dentries:1182)  --> Bad inode number[0x3] for '..', 
> parent parent ino is [0x4]

Does fsck report this? If LOST_PINO is found, it must skip parent ino?

> 
> Rename sets LOST_PINO for old_inode. However, the flag cannot be cleared,
> since dir is written back with CP. So, let's get rid of LOST_PINO for a
> renamed dir and fix the pino directly at the end of rename.
> 
> Signed-off-by: Sheng Yong <shengyo...@huawei.com>
> ---
>  fs/f2fs/namei.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
> index c31b40e5f9cf..b75dc2f4ad57 100644
> --- a/fs/f2fs/namei.c
> +++ b/fs/f2fs/namei.c
> @@ -772,7 +772,10 @@ static int f2fs_rename(struct inode *old_dir, struct 
> dentry *old_dentry,
>       }
>  
>       down_write(&F2FS_I(old_inode)->i_sem);
> -     file_lost_pino(old_inode);
> +     if (!old_dir_entry || whiteout)
> +             file_lost_pino(old_inode);
> +     else
> +             F2FS_I(old_inode)->i_pino = new_dir->i_ino;
>       up_write(&F2FS_I(old_inode)->i_sem);
>  
>       old_inode->i_ctime = current_time(old_inode);
> -- 
> 2.11.0
> 
> 
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