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

[Amir Goldstein]

On Thu, Apr 6, 2017 at 3:26 PM, Richard Weinberger <richard at nod.at> wrote:
> Am 06.04.2017 um 14:09 schrieb Richard Weinberger:
>>> Were you able to make any progress? still working on this?
>>> If this is too complicated to get in for this cycle, better send a patch
>>> to disable O_TMPFILE support for ubifs and fix the problem properly on
>>> followup merge cycle.
>>> Because right now ubifs O_TMPFILE support is broken and breaks overlayfs mount.
>>
>> I have a test and currently testing it. As it looks the situation is less worse
>> than I thought first. :-)
>
> s/test/patch :)
>

Richard,

Maybe it's not my business to interfere with ubifs development and I
haven't seen your patch.

But on the face of it, it doesn't sound like fixing O_TMPFILE is a
trivial fix, so not sure
it is wise to send a patch for -rc7?...

How about sending the patch to disable O_TMPFILE for -rc7 and queuing
your fix for v4.12?
Without any patch, v4.11 is going to have a regression with overlayfs+ubifs.

Amir.