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

From	Richard Weinberger <richard@nod.at>
Newsgroups	linux.kernel
Subject	Re: [PATCH] ubifs: Fix O_TMPFILE corner case in ubifs_link()
Date	2017-04-11 13:00 +0200
Message-ID	<tv1GF-5TL-7@gated-at.bofh.it> (permalink)
References	(5 earlier) <tqHnb-6iA-15@gated-at.bofh.it> <tteoF-8jD-3@gated-at.bofh.it> <tteoF-8jD-1@gated-at.bofh.it> <tteI2-8tl-27@gated-at.bofh.it> <tv1dD-5J4-5@gated-at.bofh.it>
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Hi!

Am 11.04.2017 um 12:20 schrieb Amir Goldstein:
> On Thu, Apr 6, 2017 at 3:26 PM, Richard Weinberger <richard@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.

No need to panic.
I verified some stuff and my first patch does the right thing but not in a nice way,
except in oneerror patch. In will land in -rc7.

For the next merge window I prepare patches that introduce a new journal function
for handling tmpfiles.

Thanks,
//richard

Thread

Re: [PATCH] ubifs: Fix O_TMPFILE corner case in ubifs_link() Amir Goldstein <amir73il@gmail.com> - 2017-04-11 12:30 +0200
  Re: [PATCH] ubifs: Fix O_TMPFILE corner case in ubifs_link() Richard Weinberger <richard@nod.at> - 2017-04-11 13:00 +0200
    Re: [PATCH] ubifs: Fix O_TMPFILE corner case in ubifs_link() Amir Goldstein <amir73il@gmail.com> - 2017-04-11 17:10 +0200
      Re: [PATCH] ubifs: Fix O_TMPFILE corner case in ubifs_link() Ralph Sennhauser <ralph.sennhauser@gmail.com> - 2017-04-17 17:30 +0200
        Re: [PATCH] ubifs: Fix O_TMPFILE corner case in ubifs_link() Richard Weinberger <richard@nod.at> - 2017-04-17 18:00 +0200

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