From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DA0D6606A33F for ; Mon, 9 Nov 2026 09:20:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=FtE+i+D5; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=PWMKq2ci DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Unsubscribe-Post:List-Owner; bh=8h0PI3x5L84bxHJWgvhwyPcSqbxezc6i6wUfYwT0/gw=; b=FtE+i+D5BUt4BZUtEr8XQawjBk hLMjM+CzWl1GFH3bVhlabABgT2tuk/qM++yU0pbDMG7zTSi0Fj3H/WpVHBqfMttYJbThZErFrK7J1 CCCwJruEehOQL923syla3ROhOrJqZW6Qs5lzBwRVhDSLngLHsRRyh4/7TdieFTAXuZYBLXMlIdrRl mAHHPW3srMKsnpcv7IXXDCnQLOVJ6aghjTg6PkaoG48+09NfOPX6TR75XUBj72eWM/0vem5nWnRii IvkcJmJZoLeU8h7N5v6xs9RnRcZxVUF7eH41ekyyKY+MtIGlvc1/3ANf2ggtQ0fuuU6tTaYcHzyFH /j/vuxCQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xQLYY-00000000Ef7-49FI; Mon, 09 Nov 2026 09:20:50 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xQLYY-00000000Ees-0WFu; Mon, 09 Nov 2026 09:20:50 +0000 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-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-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-10.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,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