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Date:   Tue, 21 Apr 2020 02:00:05 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     js1304@gmail.com
Cc:     Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, Vlastimil Babka <vbabka@suse.cz>,
        Laura Abbott <labbott@redhat.com>,
        "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>,
        Mel Gorman <mgorman@techsingularity.net>,
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        Pavel Machek <pavel@ucw.cz>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: Re: [PATCH 01/10] mm/page-flags: introduce PageHighMemZone()
Message-ID: <20200421090005.GA23085@infradead.org>
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I don't think the names are very good.  I'd keep PageHighMem for the
existing highmem zone, and add something like PageDirectMapped or
similar for ay page that has a valid direct mapping address.  This will
also come in handy if we plan to go ahead with the xpfo work.