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Mon, 14 Sep 2026 07:48:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789372106; bh=KClFb1VkJGLkCtI9WH4c0jXlSTsGRG9fGPGrsgOGFto=; h=Subject:From:To:Cc:In-Reply-To:References:Date; b=nLdtUM3zSn5yjHCXAQDEJt8zxWnibA6ikmvc29vVbrh8Ln3dybfNcrz11rsuUPiEH 5KCUQOuV4EQE90HKBkr0a/v+1VvUJVsxbcvjzjVApP+WrhsacfI9YY0VRuBkLu+Kkd YgXkpu7rtKeyGbBpMQNP3XsuLaw0F4vuiQDXNJ3EwNQGpZveLv6/xNAJ/IOU19I/sb 2qFdKNiExZ6B71Cb1V/gYrS7EqO5zgaBEJVicA5k/tU5oGlQwEcpu0XBDijLiv9kai mSqrIdhSOo41skGmUtaFAPfB32scbc46USqILXRyS8XI2lgF+Rpg/5cvUro+uG/+rf 0ps/oyP1ttzlw== X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Subject: Re: [PATCH v3 02/11] mm/sparse-vmemmap: factor out shared vmemmap tail page allocation From: Mike Rapoport To: Muchun Song Cc: Andrew Morton , David Hildenbrand , Oscar Salvador , Madhavan Srinivasan , Michael Ellerman , Jonathan Corbet , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-doc@vger.kernel.org, Muchun Song , Lorenzo Stoakes , Mike Rapoport , Qi Zheng , Nicholas Piggin , Christophe Leroy , Randy Dunlap In-Reply-To: <20260911050228.58884-3-songmuchun@bytedance.com> References: <20260911050228.58884-1-songmuchun@bytedance.com> <20260911050228.58884-3-songmuchun@bytedance.com> Date: Mon, 14 Sep 2026 10:48:14 +0300 Message-Id: <178937209456.4188640.108482640666201896.b4-review@b4> X-Mailer: b4 0.17-dev On Fri, 11 Sep 2026 13:02:19 +0800, Muchun Song wrote: > HugeTLB and sparse-vmemmap each have their own helper to allocate the > shared vmemmap tail page used by vmemmap optimization. > > Factor that logic into a common vmemmap_shared_tail_page() helper. It > allocates the page through vmemmap_alloc_block(), and uses cmpxchg() > to install the per-zone shared page. > > [...] Acked-by: Mike Rapoport (Microsoft) -- Sincerely yours, Mike.