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[172.10.233.147]) by smtp.gmail.com with ESMTPSA id j8-20020a252308000000b00bf44703efd3sm1487805ybj.6.2023.06.26.21.44.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Jun 2023 21:44:19 -0700 (PDT) Date: Mon, 26 Jun 2023 21:44:08 -0700 (PDT) From: Hugh Dickins X-X-Sender: hugh@ripple.attlocal.net To: "Vishal Moola (Oracle)" cc: Andrew Morton , Matthew Wilcox , linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org, Hugh Dickins , Catalin Marinas , Huacai Chen , Geert Uytterhoeven , Thomas Bogendoerfer , Dinh Nguyen , Jonas Bonn , David Hildenbrand , Claudio Imbrenda , Paul Walmsley , "David S. Miller" , Richard Weinberger , Yoshinori Sato , Dave Hansen , Arnd Bergmann , Christophe Leroy Subject: Re: [PATCH v6 00/33] Split ptdesc from struct page In-Reply-To: <20230627031431.29653-1-vishal.moola@gmail.com> Message-ID: References: <20230627031431.29653-1-vishal.moola@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230626_214427_131646_FEF2A9C5 X-CRM114-Status: GOOD ( 12.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 26 Jun 2023, Vishal Moola (Oracle) wrote: > The MM subsystem is trying to shrink struct page. This patchset > introduces a memory descriptor for page table tracking - struct ptdesc. ... > 39 files changed, 686 insertions(+), 455 deletions(-) I don't see the point of this patchset: to me it is just obfuscation of the present-day tight relationship between page table and struct page. Matthew already explained: > The intent is to get ptdescs to be dynamically allocated at some point > in the ~2-3 years out future when we have finished the folio project ... So in a kindly mood, I'd say that this patchset is ahead of its time. But I can certainly adapt to it, if everyone else sees some point to it. Hugh _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel