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Date:   Mon, 15 Feb 2021 00:22:57 +0000
From:   David Howells <dhowells@...hat.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     dhowells@...hat.com, Matthew Wilcox <willy@...radead.org>,
        Jeff Layton <jlayton@...hat.com>,
        David Wysochanski <dwysocha@...hat.com>,
        Anna Schumaker <anna.schumaker@...app.com>,
        Trond Myklebust <trondmy@...merspace.com>,
        Steve French <sfrench@...ba.org>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        ceph-devel@...r.kernel.org, linux-afs@...ts.infradead.org,
        linux-cachefs@...hat.com, CIFS <linux-cifs@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        "open list:NFS, SUNRPC, AND..." <linux-nfs@...r.kernel.org>,
        v9fs-developer@...ts.sourceforge.net,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [GIT PULL] fscache: I/O API modernisation and netfs helper library

Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> But no, it's not a replacement for actual code review after the fact.
> 
> If you think email has too long latency for review, and can't use
> public mailing lists and cc the people who are maintainers, then I
> simply don't want your patches.

I think we were talking at cross-purposes by the term "development" here.  I
was referring to the discussion of how the implementation should be done and
working closely with colleagues - both inside and outside Red Hat - to get
things working, not specifically the public review side of things.  It's just
that I don't have a complete record of the how-to-implement-it, the
how-to-get-various-bits-working-together and the why-is-it-not-working?
discussions.

Anyway, I have posted my fscache modernisation patches multiple times for
public review, I have tried to involve the wider community in aspects of the
development on public mailing lists and I have been including the maintainers
in to/cc.

I've posted the more full patchset for public review a number of times:

4th May 2020:
https://lore.kernel.org/linux-fsdevel/158861203563.340223.7585359869938129395.stgit@warthog.procyon.org.uk/

13th Jul (split into three subsets):
https://lore.kernel.org/linux-fsdevel/159465766378.1376105.11619976251039287525.stgit@warthog.procyon.org.uk/
https://lore.kernel.org/linux-fsdevel/159465784033.1376674.18106463693989811037.stgit@warthog.procyon.org.uk/
https://lore.kernel.org/linux-fsdevel/159465821598.1377938.2046362270225008168.stgit@warthog.procyon.org.uk/

20th Nov:
https://lore.kernel.org/linux-fsdevel/160588455242.3465195.3214733858273019178.stgit@warthog.procyon.org.uk/

I then cut it down and posted that publically a couple of times:

20th Jan:
https://lore.kernel.org/linux-fsdevel/161118128472.1232039.11746799833066425131.stgit@warthog.procyon.org.uk/

25th Jan:
https://lore.kernel.org/linux-fsdevel/161161025063.2537118.2009249444682241405.stgit@warthog.procyon.org.uk/

I let you know what was coming here:
https://lore.kernel.org/linux-fsdevel/447452.1596109876@warthog.procyon.org.uk/
https://lore.kernel.org/linux-fsdevel/2522190.1612544534@warthog.procyon.org.uk/

to try and find out whether you were going to have any objections to the
design in advance, rather than at the last minute.

I've apprised people of what I was up to:
https://lore.kernel.org/lkml/24942.1573667720@warthog.procyon.org.uk/
https://lore.kernel.org/linux-fsdevel/2758811.1610621106@warthog.procyon.org.uk/
https://lore.kernel.org/linux-fsdevel/1441311.1598547738@warthog.procyon.org.uk/
https://lore.kernel.org/linux-fsdevel/160655.1611012999@warthog.procyon.org.uk/

Asked for consultation on parts of what I wanted to do:
https://lore.kernel.org/linux-fsdevel/3326.1579019665@warthog.procyon.org.uk/
https://lore.kernel.org/linux-fsdevel/4467.1579020509@warthog.procyon.org.uk/
https://lore.kernel.org/linux-fsdevel/3577430.1579705075@warthog.procyon.org.uk/

Asked someone who is actually using fscache in production to test the rewrite:
https://listman.redhat.com/archives/linux-cachefs/2020-December/msg00000.html

I've posted partial patches to try and help 9p and cifs along:
https://lore.kernel.org/linux-fsdevel/1514086.1605697347@warthog.procyon.org.uk/
https://lore.kernel.org/linux-cifs/1794123.1605713481@warthog.procyon.org.uk/
https://lore.kernel.org/linux-fsdevel/241017.1612263863@warthog.procyon.org.uk/
https://lore.kernel.org/linux-cifs/270998.1612265397@warthog.procyon.org.uk/

(Jeff has been handling Ceph and Dave NFS).

Proposed conference topics related to this:
https://lore.kernel.org/linux-fsdevel/9608.1575900019@warthog.procyon.org.uk/
https://lore.kernel.org/linux-fsdevel/14196.1575902815@warthog.procyon.org.uk/
https://lore.kernel.org/linux-fsdevel/364531.1579265357@warthog.procyon.org.uk/

though the lockdown put paid to that:-(

Willy has discussed it too:
https://lore.kernel.org/linux-fsdevel/20200826193116.GU17456@casper.infradead.org/

David

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