linux-kernel - Re: [PATCH mm-unstable v2 00/16] mm: Introduce arch_mmap

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Message-ID: <695eabb8-ba28-4031-bc4d-66dc4f1d096f@lucifer.local>
Date: Fri, 13 Dec 2024 08:59:53 +0000
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: "Liam R. Howlett" <Liam.Howlett@...cle.com>,
        Kalesh Singh <kaleshsingh@...gle.com>, vbabka@...e.cz,
        yang@...amperecomputing.com, riel@...riel.com, david@...hat.com,
        minchan@...nel.org, jyescas@...gle.com, linux@...linux.org.uk,
        tsbogend@...ha.franken.de, James.Bottomley@...senpartnership.com,
        ysato@...rs.sourceforge.jp, dalias@...c.org,
        glaubitz@...sik.fu-berlin.de, davem@...emloft.net, andreas@...sler.com,
        tglx@...utronix.de, bp@...en8.de, dave.hansen@...ux.intel.com,
        x86@...nel.org, chris@...kel.net, jcmvbkbc@...il.com,
        bhelgaas@...gle.com, jason.andryuk@....com, leitao@...ian.org,
        linux-alpha@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-snps-arc@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-csky@...r.kernel.org,
        loongarch@...ts.linux.dev, linux-mips@...r.kernel.org,
        linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
        sparclinux@...r.kernel.org, linux-mm@...ck.org,
        kernel-team@...roid.com, android-mm@...gle.com,
        Jann Horn <jannh@...gle.com>
Subject: Re: [PATCH mm-unstable v2 00/16] mm: Introduce arch_mmap_hint()

On Thu, Dec 12, 2024 at 05:36:09PM -0800, Andrew Morton wrote:
> On Thu, 12 Dec 2024 22:51:34 +0000 Lorenzo Stoakes <lorenzo.stoakes@...cle.com> wrote:
>
> > You've fundamentally violated kernel process and etiquette. I'd be more
> > forgiving, but this is at v2 and you've not cc'd KEY people. Twice. This is
> > totally unacceptable. See [0] if you are unsure of how to do so.
>
> This feels excessive to me.  linux-mm averages a mere 140 mesages/day
> and it seems reasonable to assume that key people are spending their 5
> minutes to scroll through the email subjects.

In practice we did all miss it, and I don't think it's unreasonable to ask
people to run get_maintainers.pl to avoid this.

In any case, I truly do think this series works better as RFC, I mean Liam
has already voiced the kind of disagreements I share with it, and we need
to rethink how to approach it in general.

So if this is simply sent as RFC with the correct cc's (and ideally with
some review feedback applied - a better cover letter, etc.) then it makes
everything easier.

As mentioned the timing is unfortunate here, this is a series we really
want to make sure is properly reviewed before any chance of merge so again
this points to RFC being the way forward.