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Date:   Wed, 21 Nov 2018 07:07:06 +1100
From:   Stephen Rothwell <sfr@canb.auug.org.au>
To:     Joel Fernandes <joel@joelfernandes.org>
Cc:     Andy Lutomirski <luto@kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Hugh Dickins <hughd@google.com>, Jann Horn <jannh@google.com>,
        Khalid Aziz <khalid.aziz@oracle.com>,
        Linux API <linux-api@vger.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@vger.kernel.org>, Linux-MM <linux-mm@kvack.org>,
        marcandre.lureau@redhat.com, Matthew Wilcox <willy@infradead.org>,
        Mike Kravetz <mike.kravetz@oracle.com>,
        Shuah Khan <shuah@kernel.org>
Subject: Re: [PATCH -next 1/2] mm/memfd: make F_SEAL_FUTURE_WRITE seal more
 robust
Message-ID: <20181121070658.011d576d@canb.auug.org.au>
In-Reply-To: <20181120183926.GA124387@google.com>
References: <20181120052137.74317-1-joel@joelfernandes.org>
        <CALCETrXgBENat=5=7EuU-ttQ-YSXT+ifjLGc=hpJ=unRgSsndw@mail.gmail.com>
        <20181120183926.GA124387@google.com>
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Hi Joel,

On Tue, 20 Nov 2018 10:39:26 -0800 Joel Fernandes <joel@joelfernandes.org> =
wrote:
>
> On Tue, Nov 20, 2018 at 07:13:17AM -0800, Andy Lutomirski wrote:
> > On Mon, Nov 19, 2018 at 9:21 PM Joel Fernandes (Google)
> > <joel@joelfernandes.org> wrote: =20
> > >
> > > A better way to do F_SEAL_FUTURE_WRITE seal was discussed [1] last we=
ek
> > > where we don't need to modify core VFS structures to get the same
> > > behavior of the seal. This solves several side-effects pointed out by
> > > Andy [2].
> > >
> > > [1] https://lore.kernel.org/lkml/20181111173650.GA256781@google.com/
> > > [2] https://lore.kernel.org/lkml/69CE06CC-E47C-4992-848A-66EB23EE6C74=
@amacapital.net/
> > >
> > > Suggested-by: Andy Lutomirski <luto@kernel.org>
> > > Fixes: 5e653c2923fd ("mm: Add an F_SEAL_FUTURE_WRITE seal to memfd") =
=20
> >=20
> > What tree is that commit in?  Can we not just fold this in? =20
>=20
> It is in linux-next. Could we keep both commits so we have the history?

Well, its in Andrew's mmotm, so its up to him.

--=20
Cheers,
Stephen Rothwell

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