From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9BC62C30653 for ; Thu, 27 Jun 2024 16:33:34 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1FDF36B0098; Thu, 27 Jun 2024 12:33:34 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1899A6B0099; Thu, 27 Jun 2024 12:33:34 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id F1C526B009A; Thu, 27 Jun 2024 12:33:33 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id CDCF76B0098 for ; Thu, 27 Jun 2024 12:33:33 -0400 (EDT) Received: from smtpin11.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 81BFD140C28 for ; Thu, 27 Jun 2024 16:33:33 +0000 (UTC) X-FDA: 82277214306.11.E2198DD Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by imf24.hostedemail.com (Postfix) with ESMTP id 6F381180013 for ; Thu, 27 Jun 2024 16:33:31 +0000 (UTC) Authentication-Results: imf24.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Jtwt8xMJ; spf=pass (imf24.hostedemail.com: domain of sj@kernel.org designates 145.40.73.55 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=none) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1719505995; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=al3rN4vSD9bQDje93vUT2q/tmPAaOO4GV7WAqX2Tqmo=; b=uVRmqhL+rm7YD2mzrrIo4vCS0ove+fyaBXI7lE0ReWnDOaGnHgeu1e+j+jSLMx4BKFgb6S SFoi0TOhE3/TZ0y3aDkNUQnVWWIb6HSUWcnWTHVwtjBt7tZbwujmJVmnRQs91jzCmtDi92 c8lKUQebx8u/5rx6dMdarNKLaUXnw7c= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1719505995; a=rsa-sha256; cv=none; b=j4CVvTG6lKNjgJRHNc1S980853wTxjeLvb4+nHG9Ab3TUbIM3OZMrJ3t7YnwDFQhpZNA9W RAfZAEl5cvuH41Z+UhQK67litAOijapSqNJujRUf7Jg13sc6qZQtk92FPr09gS6+QYK/Sp VpoNHVbYN3JRAYsQscTKXPlHgnmA2tE= ARC-Authentication-Results: i=1; imf24.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Jtwt8xMJ; spf=pass (imf24.hostedemail.com: domain of sj@kernel.org designates 145.40.73.55 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=none) header.from=kernel.org Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 725F2CE3332; Thu, 27 Jun 2024 16:33:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 55F78C2BBFC; Thu, 27 Jun 2024 16:33:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1719506007; bh=2DUeWGEU+EJlfVkYq57q0DvvAe6Il1OLdqPN8k+FcWI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Jtwt8xMJ6A6/JaQGJORqQg54gjxEyxEyuC3q+BoF7eZ3+KfC0oXv7YLAqOddbtb9X 4J6Oz40bvv3QEAd3bpR+3bfqd2UkB04vNKAmT+AQr8bFYLaLtTZErzLBpocxX7qP2i zp/cO07mztDg/+tedme4sfk07Zkj0VK7cb0eDMS/sv5FpYzEVzWNG9Yf8JdcPEOX3B zh4hFWgasgYu+8gaz3VIHmvw3rVzaTNIiEab6mEj11l5okiWBdXmMW3NF13/kGf18O BlId1jmvejfykSlZI3Ay07mX5r7Pg0M5NnAZLpL3UwKIswq2gzB1lZdsANUlum9J/f YNVdovoaxbQCg== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH mm-unstable] mm/damon/core: increase regions merge aggressiveness while respecting min_nr_regions Date: Thu, 27 Jun 2024 09:33:25 -0700 Message-Id: <20240627163325.75996-1-sj@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240626150516.fb14ba5e65ae9d59ece0d390@linux-foundation.org> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 6F381180013 X-Stat-Signature: mjru8w8znyn5uj1a69fm1zy7ym3aagaf X-Rspamd-Server: rspam09 X-Rspam-User: X-HE-Tag: 1719506011-828712 X-HE-Meta: U2FsdGVkX18sAtHmhbxHerwxIhQlw69PluNltW6iJmZt6UPWFEDm0ML9ikAtWjLKHsT4Lefbz1tZMz7V2It2QwovcLRoJaxVJnMksDnqo3iO5XvQeOWymUGYku7wNC5tj+zc/w4btZl4IDeHSAvXunmx7QG/MFcKfi8JOymW81A6+sgSdnMg7hzWL/x/laEwJfa1Z1VwHHgIws17wpGAHPdza+spHYAw+jXN/8fE0f+LLjAv6nqjHSlcmPtqXrFjUMfXdEqZdxhYWYOHRH1dBhd+xU6Kg3RfHJDx3wzDMKGLFPzfBwunRFDcVxYL6PeiP0QM0EGqcK1J7gbT1E2BBT+x7AWv15Ep5D9v1ICjGsd6rjBaukIowk34jcr11vopcuchSx8BAQdpxndDKt38eRL3mwWjB30Adgvd/9Z8JpxGhxyxFQgbHL9846eJO6B7AEUmiSEo8Huet6olqGPmzT0Ye1w8RuMQtuipczQEE85J+zWvjXHDzuoYEqBhQ3zLArSYGwdu/Hhp5vOPew2Vx5Qqlp6Ul+MRaGZT/sJvphhe+NYpwK7C5hB5I4cUr7JlxOzKVuUidXkQOdRzHcRreIoDCrQerdL+Z6tCM+7Lwu+VO62Aerv/EBLUCMb8KT9C2B8y327glnYB8QE0JqCiNztgQhkj18oZU3r+QC4fp9MzjsR7dP3qsmAEb0jvvR0KIfUmvzL+Jck3peT/WlmIRaFu//fAzQwXe955bV+som0GAJ2wr0rzdvdaWLe6SbFxA1Y5RLHvPtmQuOEvAf2YYZfmYPfxRwZhe9n25BqX08hy2sTw+TNUewOxsl6136NjBK36TBw57ZzEBSIcBh2oYSM+wtsXBCEucCM0l4AbbZ0QrfMLxtoeFtd8XGjEtmePkGCn3B8fXIxl7HRUuWqBJWF6qA+5QY7D+b4zE8YKax8lJZBq7MDYq4n0/sVsQEsIIpi4TGgemKMhAX3ZHVT cdpiD3GH TyeyMBNqPBb3idhagemHJ3ZNJE11+ehoho+8Wbq7cDTjLcf3EcxmUX2Wj4Sf4OTBUX01Jv6MhSSym6F5BY6Vwj70EhyMyAS7R9FnQu3REfDXyLjubAo7P6JDEQ01+1qsCSq+NV7aaHbanKpQzV0SNI9IViLEX7wZfiG/1P5Yy2/V4LmjIPZhWkO4hf2ueme6RBaBiQYeRF5ftTwOklwsx9PcWA1UF4L7tu762OOEuZwUVY9LBiYq8ep1mV+cFQxQ1C2nSrsXp7dlynlqHCygKDfuyuL8Wf4lV23p+GGf8spxckmDjbEfjfKO5rnShr8B9sN6yvpp1GNnJRZ8BczUB0oDMZA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Andrew, On Wed, 26 Jun 2024 15:05:16 -0700 Andrew Morton wrote: > On Wed, 26 Jun 2024 14:49:54 -0700 SeongJae Park wrote: > [...] > > I'll send the fix of the fix as a formal patch soon. > > > > FYI, the original fix is definitely better to be merged in stable kernels, but > > not urgent in my opinion, since the problematic case is not common and the > > behavior was same since the beginning of DAMON. Andrew, if you feel the > > original fix is not stable yet, please feel free to delay moving it to > > hotfix-stable for one week or two. > > That's fine - we can merge cc:stable patches any time, really - they > will still get backported. There's only a hurry to get fixes merged up > if they're security-related or if the issue is causing people problems. > > In this case I'll await your -fix-2.patch and we can merge the patch > next week. All sounds good, thank you Andrew! I just posted the -fix-2.patch: https://lore.kernel.org/20240627163153.75969-1-sj@kernel.org Thanks, SJ