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

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Date:   Thu, 1 Sep 2016 09:40:17 -0700
From:   "Darrick J. Wong" <darrick.wong@...cle.com>
To:     "Theodore Ts'o" <tytso@....edu>
Cc:     Török Edwin <edwin@...rok.net>,
        Daeho Jeong <daeho.jeong@...sung.com>,
        Youngjin Gil <youngjin.gil@...sung.com>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        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 Mon, Aug 22, 2016 at 10:33:08AM +0300, Török Edwin wrote:
> 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).

Ted, ping for stable inclusion please? :)

--D

> 
> Best regards,
> --Edwin
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