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b=lwIdnL0V6B1xgbXh1rsqi180ml/YIQuwwmVrz8pReUB3hO+1SFrjb31YvG3wuQL3U pMkAfwtAgAxI1epLbRAhdgm49Cf68DKmh9Q551UbXS9SNeTcbyPdYTnSGopt1IB9oc EjXZUhVZ+wVon7RjnY9n+1msH7KPAxbuFiO9sTzs= Date: Thu, 30 Apr 2026 07:22:35 -0700 From: Andrew Morton To: Vineet Agarwal Cc: hannes@cmpxchg.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, kasong@tencent.com, qi.zheng@linux.dev, shakeel.butt@linux.dev, baohua@kernel.org, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, david@kernel.org, mhocko@kernel.org, ljs@kernel.org, linuszeng@tencent.com Subject: Re: [PATCH] mm/vmscan: fix delayed flusher wakeup in MGLRU Message-Id: <20260430072235.006c67550ab3d182d6cdce19@linux-foundation.org> In-Reply-To: <20260429185441.486804-1-agarwal.vineet2006@gmail.com> References: <20260429185441.486804-1-agarwal.vineet2006@gmail.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 2BCF620019 X-Stat-Signature: hcrdi4urbsetyq75ihaaw4skiaiq6ys6 X-HE-Tag: 1777558957-435780 X-HE-Meta: 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 ehKIkiAc turDkADvN3H5mEzYguv2UVhKW0tygWg12Sz70LpCH6IldEiKtAs0Id6kAW+9XEUBMqr3GYE0zyJIxem41SdBktnU8eWx4+2NqvrpCPUBckJ6IIsKMI9qz9kNTtnmX1rLf7DPeyo4ZW/tKAJx9r4JCAsiybKOEAq5osUA9AIjcGPAZHyJA8xC6Nke4o+L0cLp7sz7NNiEbgQQTnRm3rCz8FQXjIf5qiFi4aan3+j0cX5i+wyTQVtdDtjlGS7syVc8VWs8/E7YXuzGLnMXAiwpmOB9RG2V1qSuIF68EmLWmwXSO9MIQfeBtIX5IHtzSnayaY6YqWPgH16loICDRkJrmju3/AbX6i4fFz1vcLYasyBvW0MX13U+9oK7LTA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, 30 Apr 2026 00:24:41 +0530 Vineet Agarwal wrote: > MGLRU currently decides whether to wake flusher threads in > try_to_shrink_lruvec() using cumulative reclaim counters: > > ... > > Make MGLRU use the same per-batch flusher wakeup behavior as classic > reclaim by moving the flusher wakeup into evict_folios(), using > batch-local isolation results from scan_folios() instead of the > cumulative counters checked later in try_to_shrink_lruvec(). Thanks. AI review asked a couple of questions: https://sashiko.dev/#/patchset/20260429185441.486804-1-agarwal.vineet2006@gmail.com