From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 916D6606A321 for ; Mon, 9 Nov 2026 09:20:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=PWMKq2ci Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4jNPQq6nJsz2xKx; Mon, 09 Nov 2026 20:20:51 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2600:3c0a:e001:78e:0:1991:8:25" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1794216051; cv=none; b=f1CF4q029h9rMYjOdUwOFnKSO/9DkBwO86pShyD+nMGw9X8tT4s8rqWQ9nKj6IQYbWcmFt45141QEhemt59JEGo1gNeeDcsQgvAPuXmz6aaKSbZTA4QMsn/Sg1GQQwsQzgugDsLL1lKQ5qQcLeRlEm2WIGDdCIvxxEPxD9spblgv6/9e6hkPCMTa+MvQ6FI0OrUGvVP4BTpw9xBxhdhcdWWrfNs7yn8Eyc0yQNS1Hr8QnW4kpZXRLEvmt/0x3NHUPAWu87y50l9XqCg4uLvcGIkRG7eXutBh86frU/GwQzGot0vZfXWI9+s/hb222UbEPadKTx+Ap/QXKC8wZCp6pw== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1794216051; c=relaxed/relaxed; bh=8h0PI3x5L84bxHJWgvhwyPcSqbxezc6i6wUfYwT0/gw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=i083CyOpE2wGgdMwK+nrENwJcgGTmDHWCjqZLRQndFl8ZmH2KeLNVycqj/6J5mm2XstLxciGyWIQ1658NUOq1fDtrN6LXydg3MS89eN5yEyxsotpfzh+hzF8kdb8LYAl/bNXBIdQMXuTbzQ8mPMVw16JLsa+oprqmftBe95FSa0Stl9i4MM56IanD9+ed6xpFQVwXwSId85vEoferyNSH7RZk3lEWqFRfFYPaXp7VK4+63ydOfLzUbhSwm7p2dbeq2lKIm/Uat0fsjaZAvPZB7B0ze+dORlteT8ZyVwnLjt0rs7TBCiWbIkQqfFYf+dm97eIKG6qGfaH1pYU2f/vHA== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=PWMKq2ci; dkim-atps=neutral; spf=pass (client-ip=2600:3c0a:e001:78e:0:1991:8:25; helo=sea.source.kernel.org; envelope-from=osalvador@kernel.org; receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=PWMKq2ci; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=2600:3c0a:e001:78e:0:1991:8:25; helo=sea.source.kernel.org; envelope-from=osalvador@kernel.org; receiver=lists.ozlabs.org) Received: from sea.source.kernel.org (sea.source.kernel.org [IPv6:2600:3c0a:e001:78e:0:1991:8:25]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4jNPQq2Rybz2xGg for ; Mon, 09 Nov 2026 20:20:51 +1100 (AEDT) Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 8AEBB43D06; Mon, 9 Nov 2026 09:20:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2B8531F008A2; Mon, 9 Nov 2026 09:20:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794216049; bh=8h0PI3x5L84bxHJWgvhwyPcSqbxezc6i6wUfYwT0/gw=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=PWMKq2cik7On9nLBWZZo+q2yFr8sWXi/dqsHfAOWf5G8lTU47xEhSOhDJMI8XikaX 5m07d7IVQvL4OmfmjXbpZC1xKhl0bnPIHFCc1+GnK9lePH1J9OXffOSC3rolXJf+DP k4ocKY24KRkrPS6q7WNJrkW/H6guwGWdd1Qlf00BWCHthyiEskC+lVYU1caVCSxDJ4 8mr+TmUNdQsWrTcx+JFHlqbf5vM/T8amfu0IckZaVZKSK+i+YeSGHR/TccZjqYXArb yGxJbGTMk29VHdRtuVjfBsvlx9exyhCVwGps8u3eDDtXsofy9sTxR1LmMTyHZmh202 /IyFsFh/XTSVw== Date: Mon, 9 Nov 2026 10:20:41 +0100 From: "Oscar Salvador (SUSE)" To: Muchun Song Cc: David Hildenbrand , Madhavan Srinivasan , Mike Rapoport , Andrew Morton , Lance Yang , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Ritesh Harjani , Shrikanth Hegde , Oscar Salvador , Qi Zheng , Muchun Song , Huacai Chen , WANG Xuerui , 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() Message-ID: References: <20261107043122.25650-1-songmuchun@bytedance.com> <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=us-ascii Content-Disposition: inline In-Reply-To: <20261107043122.25650-5-songmuchun@bytedance.com> X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS 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 Reviewed-by: Oscar Salvador (SUSE) -- Oscar Salvador SUSE Labs