Re: [PATCH v2 00/10] change the implementation of the PageHighMem()

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On Fri, May 01, 2020 at 07:52:35PM +0900, Joonsoo Kim wrote:
> > - New code will pop up which gets it wrong and nobody will notice for
> >   a long time.
> 
> Hmm... I think that it's not that hard to decide correct macro. If we rename
> PageHighMem() with PageDirectMapped(), they, PageDirectMapped() and
> PageHighMemZone(), are self-explanation macro. There would be no
> confusion to use.

What confuses me is why we even need PageHighMemZone - mostly code
should not care about particular zones.  Maybe just open coding
PageHighMemZone makes more sense - it is a little more cumersome, but
at least it makes it explicit what we check for.  I already sent you
an incremental diff for one obvious place, but maybe we need to look
through the remaining ones if we can kill them or open code them in an
obvious way.




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