Date: Tue, 18 Aug 2015 07:33:08 +0200
From: Damien Wyart <damien.wyart@gmail.com>
To: Tejun Heo <tj@kernel.org>
Cc: Jan Kara <jack@suse.cz>, Jens Axboe <axboe@kernel.dk>,
        Eryu Guan <eguan@redhat.com>, linux-kernel@vger.kernel.org,
        xfs@oss.sgi.com, axboe@fb.com, Jan Kara <jack@suse.com>,
        linux-fsdevel@vger.kernel.org, kernel-team@fb.com
Subject: Re: [PATCH block/for-linus] writeback: fix syncing of I_DIRTY_TIME
 inodes
Message-ID: <20150818053308.GA3629@brouette>
References: <20150812101204.GE17933@dhcp-13-216.nay.redhat.com>
 <20150813004435.GN3902@dastard>
 <20150813224415.GG4496@mtj.duckdns.org>
 <20150814111408.GB8710@quack.suse.cz>
 <20150814151401.GA6906@brouette>
 <20150817200034.GF21075@mtj.duckdns.org>
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> > I had an unstable system when running latest Linus tree with Tejun's
> > patch applied on top. Nothing fishy in the logs after rebooting without
> > the patch, but remote access with ssh when patch applied did not work
> > (as if /home partition could not be read). This system has / as ext4 and
> > other partitions (including /home) as XFS. Trying to login on tty
> > instead of X resulted in hang of X. I could reboot with sysrq, but can't
> > do further tests at the moment.

> > Back to same tree without the patch resulted in normal system.
> > So just a heads up the patch doesn't seem OK in its current state.

Hi Tejun,

> Have you been able to reproduce the failure? That sounds like an
> unlikely failure mode for the patch.

Unfortunately (as it would be nice to understand what happened), no.
I reapplied the patch on top of rc7 and could not reproduce the
unstability after several reboots.

I will continue running with the patch and report if anything strange
appears again...

-- 
Damien
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