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

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Date:   Thu, 9 Sep 2021 15:56:54 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     Christoph Hellwig <hch@...radead.org>,
        Matthew Wilcox <willy@...radead.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Johannes Weiner <hannes@...xchg.org>
Subject: Re: [GIT PULL] Memory folios for v5.15

On 9/9/21 14:43, Christoph Hellwig wrote:
> So what is the result here?  Not having folios (with that or another
> name) is really going to set back making progress on sane support for
> huge pages.  Both in the pagecache but also for other places like direct
> I/O.

Yeah, the silence doesn't seem actionable. If naming is the issue, I believe
Matthew had also a branch where it was renamed to pageset. If it's the
unclear future evolution wrt supporting subpages of large pages, should we
just do nothing until somebody turns that hypothetical future into code and
we see whether it works or not?