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Sat, 07 Mar 2026 09:29:24 +0800 Message-ID: <0fb36b71-d9b9-4a43-a13c-463469fb202f@linux.alibaba.com> Date: Sat, 7 Mar 2026 09:29:22 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 0/6] support batched checking of the young flag for MGLRU To: Andrew Morton Cc: david@kernel.org, catalin.marinas@arm.com, will@kernel.org, lorenzo.stoakes@oracle.com, ryan.roberts@arm.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, riel@surriel.com, harry.yoo@oracle.com, jannh@google.com, willy@infradead.org, baohua@kernel.org, dev.jain@arm.com, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, hannes@cmpxchg.org, zhengqi.arch@bytedance.com, shakeel.butt@linux.dev, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20260306152042.8516ec644e95e9a23df30e5f@linux-foundation.org> From: Baolin Wang In-Reply-To: <20260306152042.8516ec644e95e9a23df30e5f@linux-foundation.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: AAC781A0015 X-Stat-Signature: bc6rxs8kpusgbpaa8hfqe5fsrhuyiweq X-Rspam-User: X-HE-Tag: 1772846970-509187 X-HE-Meta: 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 D/kZjzbt nGObrBc1PZH8pap1hYNltqzVK9m2AZ/oCJc2EjN+h/lg86jqn1Ba7VPU8qx+1BwjzajRHrCDL+jeIwdTEGuwVYFn8gfGV+EuZZ3Pa+3879+QmfVW0fSOCUAitiStDm/bLQOGunWWW10suBp/0s1vSZ/FFmDuyHrnrtjKMgU9ybc9cKdGU/BXJVEH+S34eWLNMMg9hcmO6hyWtsKg5tbWut3vNOOModvUGv9xWQFkdDE75GX4YronqB3Ckm8tkXluYRhnphPTsOMYWb03BG6x3lqdAYlLZmWfrHLK7CH9pQxvOIlDZgvHuW4LiSKNH1onTQXd3fWvYCv74kDo= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 3/7/26 7:20 AM, Andrew Morton wrote: > On Fri, 6 Mar 2026 14:43:36 +0800 Baolin Wang wrote: > >> This is a follow-up to the previous work [1], to support batched checking >> of the young flag for MGLRU. >> >> Similarly, batched checking of young flag for large folios can improve >> performance during large-folio reclamation when MGLRU is enabled. I >> observed noticeable performance improvements (see patch 5) on an Arm64 >> machine that supports contiguous PTEs. All mm-selftests are passed. > > Thanks, I updated mm-new with this. > >> Changes from v2: >> v2: https://lore.kernel.org/all/cover.1772185080.git.baolin.wang@linux.alibaba.com/ >> - Update the commit message of patch 5 (per David). >> - Fix some coding style issues (per David). >> - Remove 'cur_pte' variable in lru_gen_look_around() (per David). >> - Move 'ptes += nr;' to the suitable place in folio_referenced_one() (per David). >> - Add acked tag from David. Thanks. >> > > Here's how v3 altered mm.git: Thanks Andrew. LGTM.