linux-kernel - Re: [GIT PULL] Memory folios for v5.15

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Date:   Tue, 24 Aug 2021 12:48:13 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     David Howells <dhowells@...hat.com>
Cc:     Matthew Wilcox <willy@...radead.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Linux-MM <linux-mm@...ck.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [GIT PULL] Memory folios for v5.15

On Tue, Aug 24, 2021 at 12:38 PM Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> "pageset" is such a great name that we already use it, so I guess that
> doesn't work.

Actually, maybe I can backtrack on that a bit.

Maybe 'pageset' would work as a name. It's not used as a type right
now, but the usage where we do have those comments around 'struct
per_cpu_pages' are actually not that different from the folio kind of
thing. It has a list of "pages" that have a fixed order.

So that existing 'pageset' user might actually fit in conceptually.
The 'pageset' is only really used in comments and as part of a field
name, and the use does seem to be kind of consistent with the Willy's
use of a "aligned allocation-group of pages".

                 Linus