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 <20240215145602.1371274-10-max.kellermann@ionos.com> <Zc5mRRhhU7flXB2f@casper.infradead.org>
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From: Max Kellermann <max.kellermann@ionos.com>
Date: Thu, 15 Feb 2024 20:33:28 +0100
Message-ID: <CAKPOu+_LbVg4YNumZWAc6R+bA+_LTBniUkQgH=WRaFDCjnDoDg@mail.gmail.com>
Subject: Re: [PATCH v1 09/14] linux/mm.h: move usage count functions to mm/page_usage.h
To: Matthew Wilcox <willy@infradead.org>
Cc: akpm@linux-foundation.org, linux-mm@kvack.org, 
	linux-kernel@vger.kernel.org
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On Thu, Feb 15, 2024 at 8:30=E2=80=AFPM Matthew Wilcox <willy@infradead.org=
> wrote:
> Why does this want to be its own header instead of being part of
> page_ref.h?

Because I thought page_ref.h was a low-level header and the new one
would be higher-level with (slightly) heavier dependencies. Keeping
different layers of code in separate headers helps keeping
dependencies lean. I used the term "usage" from the explanatory
comment at the top. I'll amend the patch description to explain that
detail.