linux-kernel - Re: [PATCH v4 00/10] userfaultfd: add minor fault handling

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Date:   Mon, 8 Feb 2021 16:19:45 -0800
From:   Axel Rasmussen <axelrasmussen@...gle.com>
To:     Peter Xu <peterx@...hat.com>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        Alexey Dobriyan <adobriyan@...il.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Chinwen Chang <chinwen.chang@...iatek.com>,
        Huang Ying <ying.huang@...el.com>,
        Ingo Molnar <mingo@...hat.com>, Jann Horn <jannh@...gle.com>,
        Jerome Glisse <jglisse@...hat.com>,
        Lokesh Gidra <lokeshgidra@...gle.com>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Michal Koutný <mkoutny@...e.com>,
        Michel Lespinasse <walken@...gle.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Nicholas Piggin <npiggin@...il.com>, Shaohua Li <shli@...com>,
        Shawn Anastasio <shawn@...stas.io>,
        Steven Rostedt <rostedt@...dmis.org>,
        Steven Price <steven.price@....com>,
        Vlastimil Babka <vbabka@...e.cz>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-fsdevel@...r.kernel.org, Linux MM <linux-mm@...ck.org>,
        Adam Ruprecht <ruprecht@...gle.com>,
        Cannon Matthews <cannonmatthews@...gle.com>,
        "Dr . David Alan Gilbert" <dgilbert@...hat.com>,
        David Rientjes <rientjes@...gle.com>,
        Mina Almasry <almasrymina@...gle.com>,
        Oliver Upton <oupton@...gle.com>
Subject: Re: [PATCH v4 00/10] userfaultfd: add minor fault handling

On Mon, Feb 8, 2021 at 4:03 PM Peter Xu <peterx@...hat.com> wrote:
>
> On Thu, Feb 04, 2021 at 10:34:23AM -0800, Axel Rasmussen wrote:
> > - Split out adding #ifdef CONFIG_USERFAULTFD to a separate patch (instead of
> >   lumping it together with adding UFFDIO_CONTINUE). Also, extended it to make
> >   the same change for shmem as well as suggested by Hugh Dickins.
>
> It seems you didn't extend it to shmem yet. :) But I think it's fine - it can
> always be done as a separate patch then when you work on shmem, or even post it
> along.  Thanks,

Ah, indeed, sorry about this.

I had originally planned to only do hugetlb, but then added shmem
based on Hugh's comments. And then, later reverted the shmem parts as
per the original plan, after some additional discussion with Hugh. I
wrote the changelog entry somewhere in the middle of that, and forgot
to update it. :)

>
> --
> Peter Xu
>