linux-ext4 - Re: 4.7.0-rc7 ext4 error in dx

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Date:   Mon, 22 Aug 2016 10:33:08 +0300
From:   Török Edwin <edwin@...rok.net>
To:     "Darrick J. Wong" <darrick.wong@...cle.com>,
        Theodore Ts'o <tytso@....edu>,
        Daeho Jeong <daeho.jeong@...sung.com>,
        Youngjin Gil <youngjin.gil@...sung.com>,
        Andreas Dilger <adilger.kernel@...ger.ca>
Cc:     Johannes Stezenbach <js@...21.net>, linux-kernel@...r.kernel.org,
        linux-ext4@...r.kernel.org
Subject: Re: 4.7.0-rc7 ext4 error in dx_probe

On 2016-08-18 02:28, Darrick J. Wong wrote:
> On Wed, Aug 17, 2016 at 05:27:25PM +0300, Török Edwin wrote:
>> On 2016-08-08 09:28, Darrick J. Wong wrote:
>>> On Sun, Aug 07, 2016 at 11:56:34PM -0400, Theodore Ts'o wrote:
>>>> On Fri, Aug 05, 2016 at 12:15:48PM -0700, Darrick J. Wong wrote:
>>>>>>> [1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/fs/ext4/inode.c?id=b47820edd1634dc1208f9212b7ecfb4230610a23
>>>>>>
>>>>>> I added the patch, rebuilt and rebooted.  It will take some time
>>>>>> before I'll report back since the issue is so hard to reproduce.
>>>>>
>>>>> FWIW I could trigger it reliably by running a bunch of directory traversal
>>>>> programs simultaneously on the same directory.  I have a script that fires
>>>>> up multiple mutts pointing to the Maildirs for the high traffic Linux lists.
>>>>
>>>> Hmm, I wonder if we should request that this patch be backported to
>>>> -stable.  Darrick, what do you think?
>>>
>>> Seems like an excellent idea.
>>
>> Hi,
>>
>> I see 4.7.1. was released, however before testing it in the changelog I can't
>> see the inode.c commit with the checksum fix.  Is there another commit that
>> would provide an equivalent fix, or is the fix not part of 4.7.1?
> 
> There's no 'equivalent' fix; the one we have simply didn't make it
> to the stable maintainers before 4.7.1 came out.
> 
> (Hey Ted, can you send the patch to ... whomever's in charge of 4.7?)

Ping? 4.7.2 is out....

The process for submitting to stable seems to be described here [1],
it doesn't say who can submit, but I  guess it'd be better if one of the people listed in the original commit,
or an ext4 maintainer submitted it.

FWIW 4.7.0+patch has been working reliably here, would be nice if I could tell people here that its safe to upgrade to 4.7.x (without manually patching it).

Best regards,
--Edwin
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