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dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=MMq0OsFY; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.dev (client-ip=2001:41d0:1004:224b::6c; helo=mta0.migadu.com; envelope-from=lance.yang@linux.dev; receiver=lists.ozlabs.org) Received: from mta0.migadu.com (out-108.mta0.migadu.com [IPv6:2001:41d0:1004:224b::6c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4jNJkC2C17z2xMQ for ; Mon, 09 Nov 2026 16:48:48 +1100 (AEDT) X-Envelope-To: linuxppc-dev@lists.ozlabs.org DKIM-Signature: a=rsa-sha256; bh=JSOyM4K5zrqmDFF61CwIn14s5ShEHbu2alo+0Cxugro=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1794203309; v=1; x=1794808109; b=MMq0OsFYOeDFfLKeanMq/JRW5emG22N+JN82VeucMQQPT+M2lExIrVamS+c7q+asXdJ1pdl2 1X0kSw1FOEdPQI/obnIvW1WVZJsWlAMtC3SyfA526L1kdBXP241tfsR5N7B2uuz87yZGgwPpUpd dE+PwLyiJkXRbdzGAO40uSAY= X-Envelope-To: linuxppc-dev@lists.ozlabs.org Received: by smtp.migadu.com with ESMTPS id bae7ce2de6921a50; Mon, 09 Nov 2026 05:48:29 +0000 X-Mizu-Trace-ID: bae7ce2de6921a50 X-Migadu-Flow: FLOW_OUT From: Lance Yang To: songmuchun@bytedance.com Cc: david@kernel.org, maddy@linux.ibm.com, rppt@kernel.org, akpm@linux-foundation.org, lance.yang@linux.dev, mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org, ritesh.list@gmail.com, sshegde@linux.ibm.com, osalvador@suse.de, qi.zheng@linux.dev, muchun.song@linux.dev, chenhuacai@kernel.org, kernel@xen0n.name, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org, x86@kernel.org, loongarch@lists.linux.dev, linux-s390@vger.kernel.org Subject: Re: [PATCH v3 4/5] mm/sparse-vmemmap: drop vmemmap_can_optimize() Date: Mon, 9 Nov 2026 13:48:23 +0800 Message-ID: <20261109054823.45056-1-lance.yang@linux.dev> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20261107043122.25650-5-songmuchun@bytedance.com> References: <20261107043122.25650-5-songmuchun@bytedance.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , Precedence: list X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Sat, Nov 07, 2026 at 12:31:21PM +0800, Muchun Song wrote: >section_vmemmap_optimizable() can already decide whether a section uses >vmemmap optimization based on the section compound order. The DAX-specific >vmemmap_can_optimize() helper duplicates that policy, so remove it to >simplify the code. > >Signed-off-by: Muchun Song >--- With the arch fallbacks handled by the previous patches, we can just drop vmemmap_can_optimize() now ;) Nothing jumped out at me, so: Reviewed-by: Lance Yang