linux-kernel - Re: [PATCH v6 00/27] Memory Folios

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Date:   Fri, 2 Apr 2021 20:31:51 -0400
From:   Kent Overstreet <kent.overstreet@...il.com>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-cachefs@...hat.com,
        linux-afs@...ts.infradead.org
Subject: Re: [PATCH v6 00/27] Memory Folios

On Wed, Mar 31, 2021 at 07:47:01PM +0100, Matthew Wilcox (Oracle) wrote:
> The medium-term goal is to convert all filesystems and some device
> drivers to work in terms of folios.  This series contains a lot of
> explicit conversions, but it's important to realise it's removing a lot
> of implicit conversions in some relatively hot paths.  There will be very
> few conversions from folios when this work is completed; filesystems,
> the page cache, the LRU and so on will generally only deal with folios.

I'm pretty excited for this to land - 4k page overhead has been a pain point for
me for quite some time. I know this is going to be a lot of churn but I think
leveraging the type system is exactly the right way to go about this, and I
can't wait to start converting bcachefs.