linux-kernel - Re: Folio discussion recap

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Message-ID: <20210920100332.gd4a2c3aza3rufk5@box.shutemov.name>
Date:   Mon, 20 Sep 2021 13:03:32 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     Johannes Weiner <hannes@...xchg.org>
Cc:     Dave Chinner <david@...morbit.com>,
        "Darrick J. Wong" <djwong@...nel.org>,
        Kent Overstreet <kent.overstreet@...il.com>,
        Matthew Wilcox <willy@...radead.org>,
        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>,
        Christoph Hellwig <hch@...radead.org>,
        David Howells <dhowells@...hat.com>
Subject: Re: Folio discussion recap

On Fri, Sep 17, 2021 at 07:15:40PM -0400, Johannes Weiner wrote:
> The code I'm specifically referring to here is the conversion of some
> code that encounters both anon and file pages - swap.c, memcontrol.c,
> workingset.c, and a few other places. It's a small part of the folio
> patches, but it's a big deal for the MM code conceptually.

Hard to say without actually trying, but my worry here that this may lead
to code duplication to separate file and anon code path. I donno.

-- 
 Kirill A. Shutemov