Re: [PATCH 1/3] mm: add apply_to_existing_pages helper

[Andrew Morton]

On Sun, 8 Dec 2019 23:34:58 -0800 Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:

> Or a flags argument with descriptive flags to the existing function?
> These magic bool arguments don't scale..

True.  But it's easy enough to do s/bool create/enum mode/ in the
future should the need arise.  For now, the code is clearer.