linux-kernel - Re: [MAINTAINER SUMMIT] Folios as a potential Kernel/Maintainers Summit topic?

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Date:   Wed, 15 Sep 2021 18:41:34 +0000
From:   Chris Mason <clm@...com>
To:     Theodore Ts'o <tytso@....edu>
CC:     James Bottomley <James.Bottomley@...senpartnership.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Kent Overstreet <kent.overstreet@...il.com>,
        "Matthew Wilcox" <willy@...radead.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Darrick J. Wong" <djwong@...nel.org>,
        Christoph Hellwig <hch@...radead.org>,
        David Howells <dhowells@...hat.com>,
        "ksummit@...ts.linux.dev" <ksummit@...ts.linux.dev>
Subject: Re: [MAINTAINER SUMMIT] Folios as a potential Kernel/Maintainers
 Summit topic?


> On Sep 15, 2021, at 2:20 PM, Theodore Ts'o <tytso@....edu> wrote:
> 
> On Wed, Sep 15, 2021 at 02:03:46PM -0400, James Bottomley wrote:
>> On Wed, 2021-09-15 at 13:42 -0400, Theodore Ts'o wrote:
>> [...]
>>> Would this be helpful?  (Or Linus could pull either the folio or
>>> pageset branch, and make this proposal obsolete, which would be
>>> great.  :-)
>> 
>> This is a technical rather than process issue isn't it?  You don't have
>> enough technical people at the Maintainer summit to help meaningfully. 
>> The ideal location, of course, was LSF/MM which is now not happening.
>> 
>> However, we did offer the Plumbers BBB infrastructure to willy for a MM
>> gathering which could be expanded to include this.
> 
> Well, that's why I was suggesting doing this as a LPC BOF, and using
> an LPC BOF session on Friday --- I'm very much aware we don't have the
> right tehcnical people at the Maintainer Summit.
> 
> It's not clear we will have enough MM folks at the LPC, and I agree
> LSF/MM would be a better venue --- but as you say, it's not happening.
> We could also use the BBB infrastructure after the LPC as well, if we
> can't get everyone lined up and available on short notice.  There are
> a lot of different possibilities; I'm for anything where all of the
> stakeholders agree will work, so we can make forward progress.

I think the two different questions are:

* What work is left for merging folios?

* What process should we use to make the overall development of folio sized changes more predictable and rewarding for everyone involved?

-chris