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b=aRMevG6JLVYkL0wBFdrn6ynusrO/tCacdQm5POZg/Xma+pc21b9eOr63hXqZVDX9f 9nT477K6WHXvIvUqT6uVuj1B7p3WRGKeVzdI6hs+E0l6jIIrkMF9jHQR070UTCAahJ wZLx0jeH6LJZCeFZUcmwL0l7bnLW53+qLeHyhAUtk8AKUc7c+f9ZzWRSbpWD1g8+Qr YV790KYMzuV2tfcxOxFhTO8ZTE0z+WDRbsvhBlSxJ9exPaUwCLteDLpNsZX2a6J7sN xPU8xSOrnuQ0nySeg5/4X73+ayIqQxsMkHW42K+HrQ/syfaKwYG5fGZ0qKHfcdOlPI PfGAbb4pZTkXQ== From: SJ Park To: SJ Park Cc: Andrew Morton , Liew Rui Yan , stable@vger.kernel.org, damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v4] mm/damon/core: allow esz to be set to zero Date: Tue, 8 Sep 2026 07:50:35 -0700 Message-ID: <20260908145036.104970-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260908135413.97570-1-sj@kernel.org> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam04 X-Rspam-User: X-Stat-Signature: jrgd38aa9zzgdm6r9z65gjjjg3aojf1b X-Rspamd-Queue-Id: 30E531C0004 X-HE-Tag: 1788879044-226445 X-HE-Meta: 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 SpL+p9zc eXUcefm9ySPp4GpmoXdNMTxeLmF1zZGkRnOq9SsfyYGWZ+la9/OHZlNDd8J2sHUgTKamygKvgKQDO2p/Z8AWaGObfbU1oR4bXLDOLSEbUZbln7R1j8iN/rbA3swnJoCt06lNnAzZOaPQrFzjsbKQgsm/mKFOc8LLJRKK6Hd9eOpx9L5glvYehpH69zB4DEw6mjHbgGOaRkl2dyz5r8ZBLW2HN1t1FI6P7krf9/B10Pk24gp9+BiRxEbthE2Jg+zS+Ya3u Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, 8 Sep 2026 06:54:11 -0700 SJ Park wrote: > From: Liew Rui Yan > > When the temporal quota goal tuner determines that the goal has been > achieved (score >= 10000), it sets esz_bp to zero so that the esz > becomes zero. However, damos_set_effective_quota() clamps the esz to > min_region_sz when quota->ms is set. > > This is a minor issue, the main problem is that it doesn't match the > description in the documentation, which state that if the goal has > already been [over-]achieved, the quota will be set to zero. > > Fix this by set quota (esz) as minimum as possible. Sashiko found a few pre-existing issues but no blocker for this patch. Thanks, SJ [...]