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

[Richard Weinberger]

Amir,

Am 30.03.2017 um 11:07 schrieb Amir Goldstein:
> On Thu, Mar 30, 2017 at 12:03 PM, Richard Weinberger <richard at nod.at> wrote:
>> Amir,
>>
>> Am 30.03.2017 um 10:59 schrieb Amir Goldstein:
>>> On Thu, Mar 30, 2017 at 11:56 AM, Richard Weinberger <richard at nod.at> wrote:
>>>> It is perfectly fine to link a tmpfile back using linkat().
>>>> Since tmpfiles are created with a link count of 0 they appear
>>>> on the orphan list, upon re-linking the inode has to be removed
>>>> from the orphan list again.
>>>>
>>>
>>> Looks good.
>>>
>>>> Cc: <stable at vger.kernel.org>
>>>> Cc: Ralph Sennhauser <ralph.sennhauser at gmail.com>
>>>> Cc: Amir Goldstein <amir73il at gmail.com
>>>
>>> typo: missing closing >
>>
>> Whoops, copied one byte too few from Thunderbird. :D
>> Will fix before pushing.
>>
> 
> 
> It's worth mentioning the bug that Ralph reported.
> The fact that overlayfs mount in v4.11-rc causes corruption of ubifs is much
> more severe than what the current commit message implies (fix of a corner case).

Okay, I'll add more drama to the commit message.
Usually I assume that stable patches for filesystems are considered as something
serious.

> I would also add # v4.9 hint to stable tag, just to be nice ;-)

Isn't this why we have the Fixes tag?

Thanks,
//richard