linux-kernel - Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super() and thaw

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Date:   Mon, 3 Oct 2016 18:44:35 +0200
From:   Oleg Nesterov <oleg@...hat.com>
To:     Dave Chinner <david@...morbit.com>
Cc:     Jan Kara <jack@...e.cz>, Al Viro <viro@...iv.linux.org.uk>,
        Nikolay Borisov <kernel@...p.com>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        fstests@...r.kernel.org
Subject: Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in
        freeze_super() and thaw_super() paths

On 10/03, Dave Chinner wrote:
>
> On Fri, Sep 30, 2016 at 07:14:34PM +0200, Oleg Nesterov wrote:
> > On 09/27, Oleg Nesterov wrote:
> > >
> > >
> > > It seems that generic/001 just hangs on my laptop. With or without this change.
> > > Or perhaps I didn't wait enough...
> >
> > /usr/bin/awk spins in user-mode forever, according to strace it doesn't do
> > any syscalls. I didn't even try to investigate.
>
> Are you using gawk, or some other version of awk? gawk doesn't have
> any problems

gawk, awk is symlink. And somehow this depends on userspace environment,
it doesn't hang on the full-blown Fedora 23.

> > Jan, I gave up.
> >
> > Whatever I did xfstests-dev/check reports a lot of failures, kernel bugs,
> > and finally either crashes the kernel or hangs.
>
> Did you run the auto group like I suggested? That's the set of tests
> that should complete successfully with minimal failures and without
> crashing the machine.

OK, I'll reserve a testing machine again.

Oleg.