[PATCH] ubifs: Fix O_TMPFILE corner case in ubifs_link()

[Richard Weinberger]

Am 30.03.2017 um 13:57 schrieb Adrian Hunter:
>> Reading deeper into the proved that I was wrong.
>> AFAIKT UBIFS' journal has currently no way to revive a deleted inode.
>> So, we have to think about a new solution.
> 
> Deleting the orphan looks right.  Just need to understand whether the
> recovery would do the right thing - actually it looks like O_TMPFILE might
> be OK and in other case we might be failing to remove nodes with sequence
> numbers greater than the deletion inode.

Sadly it does not the right thing.
I'm currently investigating why and how to deal with it.

I also managed to trigger that case. :(

Thanks,
//richard