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Received: from willy by casper.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1tONzu-00000005TnP-2lUU; Thu, 19 Dec 2024 21:23:54 +0000 Date: Thu, 19 Dec 2024 21:23:54 +0000 From: Matthew Wilcox To: Claudio Imbrenda Cc: David Hildenbrand , linux-mm@kvack.org, linux-s390@vger.kernel.org, "Vishal Moola (Oracle)" Subject: Re: [PATCH 1/2] s390: Convert gmap code to use ptdesc Message-ID: References: <20241219162252.1025317-1-willy@infradead.org> <20241219162252.1025317-2-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241219162252.1025317-2-willy@infradead.org> X-Stat-Signature: z3faqrdqwyqiajqybi4mtxhz3wwjqbkf X-Rspam-User: X-Rspamd-Queue-Id: 84AD8A000F X-Rspamd-Server: rspam08 X-HE-Tag: 1734643386-928064 X-HE-Meta: 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 n2T+yisR rUtMPlx9kYCV/c+Rp8mhgsD81RjPuSBFDbbOIlsCnPCtZLc4yh+8DtI6VhLsP0q7zAN5cNyFGnIR8kw8UIJamutQb1dne+TZJF9hmYUGRE1ZQUW58dd0wm0PnxKhnhtVUVZnPhC3dPW1b74UABZ6pcFm9DKEZcRZo0HEYvkPgzaCyDYYi+/HrKpsLG3+/7BDnu0T/r3UQ33zyR1PlLNt6QZfI4wEFflW6Yie2p8HA5Qz83fDTlkD/qvOOL7DzZlvPim8tBKYF8St3RQH87dYyabZ1jEUWsPTWApx0vbx2ch8MPTw= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, Dec 19, 2024 at 04:22:49PM +0000, Matthew Wilcox (Oracle) wrote: > There was originally some doubt about whether these page tables > should be represented by a vanilla struct page or whether they > should be a ptdesc. As we continue on our quest to shrink > struct page, we seem to have crossed the line into believing that > thse page tables should be a ptdesc. At least for now. Looking at this patch some more, I'm not sure that pt_index is really what we should be calling this. Would pt_gmap_addr make sense? If not, what's the right name?