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b=aBVRzBQlIrFuu2OUTsWUbIox+hZloXoDBTy2pGUmntedummE3L9kqa8ZfGuBBGr7Q uYshUqMV/yFoM8+/atUm/RI/XgPlJQi2ba/siXveguUzhb5eUD1GhwSehIrTMQ/lOB cvwjL5Ie+qOqKMYW4toDZ9Cua/RE+4A2QnlpX47+VMJgBhCpH3bzrfARSKFfNr/P82 YpH9wkVYtOFcOcnidfqvV7tq6hKjr8i6oGARSx3dyoJIihFOx4FJTENEu5sMDdEnxL xrKnJWXOiCw3EdgO0u/3eoxXnSZNaPIiXM+PNmcjpyDwJMxvXUcVnriiFdfGJf5NoZ Hj38E/WLv3Q5A== From: SJ Park To: Liew Rui Yan Cc: SJ Park , damon@lists.linux.dev, linux-mm@kvack.org Subject: Re: [RFC PATCH] mm/damon/reclaim: add 'available' memory as an optional watermarks metric Date: Sun, 28 Jun 2026 10:04:45 -0700 Message-ID: <20260628170447.88064-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260628085547.21814-1-aethernet65535@gmail.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: a1ujjdg1tnx77ywwfgp1qfh95bcwdmt1 X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: BDA9B120006 X-HE-Tag: 1782666300-990803 X-HE-Meta: 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 i8L+BfNf 3xPEDlkGsZUmWWM/F63L6tdbHLguFXAUfSWpBVyoC4Rv+zkdIB3J0hz0DEihT5dFeKJoPoFooJRtCW6sWlx6ffoOm0ESteG7Kv0Xf09M7n9qtAJRcQaYMjgOcEXuTdUuFou3qVnmqRi0ldGKmmN3vrCML5XYeGM6nLqIYnpmmdLb8o95feXPNxHLBwXg9I96/y6aQkk8siRw/SgQMFUY4Mwgepbt8X+QEZFMTRc0I2z0lS8xl9D+InMCVm1uHXvWZ7JbRt5r94tPazG1ODb1ACPnzs6W469fZslVY Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sun, 28 Jun 2026 16:55:38 +0800 Liew Rui Yan wrote: > On Sat, 27 Jun 2026 15:26:43 -0700 SJ Park wrote: > > > > I will drop this patch. I think controlling DAMOS pause/rusume > > > separately might be better suited for execution in user space (such as > > > controlling‘quota_ms’ and ‘quota_sz’). > > > > For explicit DAMOS-only pause/resume, you may also be interested in > > max_nr_snapshots [1] feature. > > Thank you for the pointer to the 'max_nr_snapshots' feature! Feel free to let me know if you have any question for the feature. > > > > > > > By the way, I sent you an email about three weeks ago (Fri, 5 Jun 2026 > > > 20:28:00 +0800) introducing a userspace auto-tuner program I wrote for > > > DAMON_RECLAIM's 'min_age', and asking for your thoughts. I am not sure > > > if it reached you, could you please check? I would really appreciate > > > your feedback on that as well. > > > > I don't recall that mail. Did you send that to damon@lists.linux.dev or other > > public mailing lists? If so, could you share the message id or lore.kernel.org > > link of the mail? If not, could you please resend? > > I hadn't previously sent this to damon@lists.linux.dev or any public > mailing list. > > Since I have completely rewritten it (the email) and it focuses on a > standalone userspace program/daemon, I have submitted it as a new > independent RFC thread [1] to avoid biasing this patch's topic. Makes perfect sense. I will review. > > > [1] https://lkml.kernel.org/r/20251216080128.42991-8-sj@kernel.org > > [1] https://lore.kernel.org/damon/20260628085155.20828-1-aethernet65535@gmail.com Thanks, SJ [...]