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Mon, 12 May 2025 07:38:46 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id wMBCEoalIWiiDgAAD6G6ig (envelope-from ); Mon, 12 May 2025 07:38:46 +0000 Message-ID: Date: Mon, 12 May 2025 09:38:46 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] MAINTAINERS: add mm GUP section To: Lorenzo Stoakes , David Hildenbrand , Zi Yan Cc: Uladzislau Rezki , Andrew Morton , Jason Gunthorpe , John Hubbard , Peter Xu , linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20250506173601.97562-1-lorenzo.stoakes@oracle.com> <20250506162113.f8fa0c00e76722a1789ec56a@linux-foundation.org> <13a32f52-dc5c-45ef-b45a-585586868509@lucifer.local> <28428030-1178-469a-a4ab-f1e7179d9106@lucifer.local> Content-Language: en-US From: Vlastimil Babka In-Reply-To: <28428030-1178-469a-a4ab-f1e7179d9106@lucifer.local> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Flag: NO X-Spam-Score: -4.30 X-Spam-Level: X-Spamd-Result: default: False [-4.30 / 50.00]; BAYES_HAM(-3.00)[99.99%]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FREEMAIL_CC(0.00)[gmail.com,linux-foundation.org,nvidia.com,redhat.com,kvack.org,vger.kernel.org]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCVD_TLS_ALL(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; RCPT_COUNT_SEVEN(0.00)[10]; MID_RHS_MATCH_FROM(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.cz:mid] On 5/8/25 14:23, Lorenzo Stoakes wrote: >> >> M for "PAGE ALLOCATOR", hmmm ..., I was hoping that Vlastimil might have >> capacity for that? :) > > Vlastimil? ;) > > I'd certainly support this. OK, can do, thanks. >> >> >> >> Not 100% sure what to do with >> >> * include/linux/page_isolation.h >> * mm/page_isolation.c >> >> (I hate the word "page isolation") >> >> They are mostly about page migration (either for alloc_contig... or memory >> hotunplug). Likely they should either go to the MIGRATION section or to the >> PAGE ALLOCATOR? Maybe MIGRATION makes more sense. Thoughts? > > I mean it explicitly relates to migrate type and migration so seems to me > it ought to be in migration. > > Though migrate type + the machinary around it is a product of the physical > page allocator (I even cover it in the 'physical memory' section of the > book). > > I wonder if our soon-to-be page allocator maintainer Vlastimil has > thoughts? ;) > > I'd vote for migration though to be honest. I checked the code briefly and although migratetypes are related to migration, it seems rather page allocator code to me. In fact if I didn't miss these files, I would have included them when proposing the PAGE ALLOCATOR section. Zi Yan has a series on that topic now and is one of the R: in PAGE ALLOCATOR. What do you think? >> >> -- >> Cheers, >> >> David / dhildenb >>