linux-kernel - Re: [PATCH -next 1/2] mm/memfd: make F_SEAL_FUTURE

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Message-ID: <CALCETrXgBENat=5=7EuU-ttQ-YSXT+ifjLGc=hpJ=unRgSsndw@mail.gmail.com>
Date:   Tue, 20 Nov 2018 07:13:17 -0800
From:   Andy Lutomirski <luto@...nel.org>
To:     Joel Fernandes <joel@...lfernandes.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Andrew Lutomirski <luto@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Hugh Dickins <hughd@...gle.com>, Jann Horn <jannh@...gle.com>,
        Khalid Aziz <khalid.aziz@...cle.com>,
        Linux API <linux-api@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>, Linux-MM <linux-mm@...ck.org>,
        marcandre.lureau@...hat.com, Matthew Wilcox <willy@...radead.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Shuah Khan <shuah@...nel.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [PATCH -next 1/2] mm/memfd: make F_SEAL_FUTURE_WRITE seal more robust

On Mon, Nov 19, 2018 at 9:21 PM Joel Fernandes (Google)
<joel@...lfernandes.org> wrote:
>
> A better way to do F_SEAL_FUTURE_WRITE seal was discussed [1] last week
> 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@...nel.org>
> Fixes: 5e653c2923fd ("mm: Add an F_SEAL_FUTURE_WRITE seal to memfd")

What tree is that commit in?  Can we not just fold this in?