Date: Tue, 27 Jun 2017 02:27:44 +0200
From: "Luis R. Rodriguez" <mcgrof@kernel.org>
To: Jessica Yu <jeyu@redhat.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Peter Zijlstra <peterz@infradead.org>
Cc: Jessica Yu <jeyu@redhat.com>, Kees Cook <keescook@chromium.org>,
        "Luis R. Rodriguez" <mcgrof@kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Shuah Khan <shuah@kernel.org>, Rusty Russell <rusty@rustcorp.com.au>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        Arnaldo Carvalho de Melo <acme@redhat.com>,
        Jonathan Corbet <corbet@lwn.net>,
        Josh Triplett <josh@joshtriplett.org>, martin.wilck@suse.com,
        Michal Marek <mmarek@suse.com>, Petr Mladek <pmladek@suse.com>,
        hare <hare@suse.com>, rwright@hpe.com, Jeff Mahoney <jeffm@suse.com>,
        David Sterba <DSterba@suse.com>, Filipe Manana <fdmanana@suse.com>,
        NeilBrown <neilb@suse.com>, Guenter Roeck <linux@roeck-us.net>,
        rgoldwyn@suse.com,
        Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>,
        Heinrich Schuchardt <xypron.glpk@gmx.de>,
        Aaron Tomlin <atomlin@redhat.com>, Miroslav Benes <mbenes@suse.cz>,
        "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
        Dan Williams <dan.j.williams@intel.com>,
        Josh Poimboeuf <jpoimboe@redhat.com>,
        "David S. Miller" <davem@davemloft.net>,
        Ingo Molnar <mingo@redhat.com>, Alan Cox <alan@linux.intel.com>,
        "Ted Ts'o" <tytso@mit.edu>, Greg KH <gregkh@linuxfoundation.org>,
        linux-kselftest@vger.kernel.org,
        "linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 0/4] kmod: help make deterministic
Message-ID: <20170627002744.GP21846@wotan.suse.de>
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On Tue, Jun 27, 2017 at 12:44:42AM +0200, Luis R. Rodriguez wrote:
> On Mon, Jun 26, 2017 at 11:37:36PM +0200, Jessica Yu wrote:
> > +++ Kees Cook [20/06/17 17:23 -0700]:
> > > On Tue, Jun 20, 2017 at 1:56 PM, Luis R. Rodriguez <mcgrof@kernel.org> wrote:
> > > > On Fri, May 26, 2017 at 02:12:24PM -0700, Luis R. Rodriguez wrote:
> > > > > Luis R. Rodriguez (4):
> > > > >   module: use list_for_each_entry_rcu() on find_module_all()
> > > > >   kmod: reduce atomic operations on kmod_concurrent and simplify
> > > > >   kmod: add test driver to stress test the module loader
> > > > >   kmod: throttle kmod thread limit
> > > > 
> > > > About a month now with no further nitpicks. What tree should these changes
> > > > go through if there are no issues? Andrew's, Jessica's ?
> > > 
> > > Seems like going through Jessica's would make the most sense?
> > 
> > Would be happy to take patches 01 (which I need to anyway), 02,
> > possibly 04 if decoupled from the test driver (03).
> 
> Feel free to decouple it, but note that then the commit log must then be
> changed. My own take is this fix is not so critical as it is a corner case, so
> I have instead preferred to couple in the test case and respective fix
> together. I'll leave it up to you how to proceed.

Note: Linus noted swait is actually very special use-case [0] so I'd hate to
add a new use case not vetted for. This use case on kmod.c really does *not*
require anything but a simple wait though, so really am inclined to let that
through unless I hear back...

[0] https://lkml.kernel.org/r/20170627001534.GK21846@wotan.suse.de

  Luis