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Date:   Wed, 23 Dec 2020 13:55:15 -0500
From:   Andrea Arcangeli <aarcange@redhat.com>
To:     Peter Xu <peterx@redhat.com>
Cc:     Yu Zhao <yuzhao@google.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andy Lutomirski <luto@kernel.org>,
        Nadav Amit <nadav.amit@gmail.com>,
        linux-mm <linux-mm@kvack.org>,
        lkml <linux-kernel@vger.kernel.org>,
        Pavel Emelyanov <xemul@openvz.org>,
        Mike Kravetz <mike.kravetz@oracle.com>,
        Mike Rapoport <rppt@linux.vnet.ibm.com>,
        stable <stable@vger.kernel.org>,
        Minchan Kim <minchan@kernel.org>,
        Will Deacon <will@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH] mm/userfaultfd: fix memory corruption due to writeprotect
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On Wed, Dec 23, 2020 at 01:51:59PM -0500, Andrea Arcangeli wrote:
> NOTE: about the above comment, that mprotect takes
> mmap_read_lock. Your above code change in the commit above, still has
       ^^^^ write

Correction to avoid any confusion.