From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8FC6D483818 for ; Tue, 13 Oct 2026 04:32:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791865970; cv=none; b=vE3dX6zgkb0CLb1OFhNU5n+Wmps5xx53cjLvv+UXNz47X2oYoQWytYFmDCkrabw23wwwuDc/+EzlrBWqvKeduFJtmge56l3ZSzrpIAgQ8La7+8WXmDQvyB4PmqB7BKFrrdTtiDVPLJW12b8zWcoyJ4BYZ8DFlh9mWLQR09k5Llo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791865970; c=relaxed/simple; bh=O+c86KBCIpcmHoOPuui80ObKYgipmB+kF2grc15B61o=; h=Date:To:From:Subject:Message-Id; b=YE3XdFs2UIUFKEldPNMzSjZ9qIKipf1JyOI4IZXl4YkpCmZ36zbUa7QgH5987gbiZScnHq24Jg2SX8aeMbEYe2reDRsA3tVE9b9aO5l0gI/Ft4rnJ3twfMI1HUbh4ztPNdCWjEvbvQzEmQFShVfZk7r2Sm/tD925KTJhfS/FCgk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=TljrCjNj; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="TljrCjNj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2F4A41F000FF; Tue, 13 Oct 2026 04:32:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1791865969; bh=e4sBhHjPU8T1W4knilv5ok5r/50bQgceq/m6TmqqGKk=; h=Date:To:From:Subject; b=TljrCjNjs9zR2iAvl0HeauuodBoJ8/+p7aYhmSPe5EsThmsW3XdMz0tXwIyz0b6vi Ugta4JyA9o6crhSmdimGsa8AlamaLq/PQCVnmb1SRvbBzQ27GX7Wv2cAIhqrO/374w Y6RhWtxRLen4ws9CynaPCb/26d8Mc5NSu1qzRQ2c= Date: Mon, 12 Oct 2026 21:32:48 -0700 To: mm-commits@vger.kernel.org,vbabka@kernel.org,surenb@google.com,shuah@kernel.org,rppt@kernel.org,rdunlap@infradead.org,mhocko@suse.com,ljs@kernel.org,liam@infradead.org,gutierrez.asier@huawei-partners.com,david@kernel.org,davidgow@davidgow.net,corbet@lwn.net,brendan.higgins@linux.dev,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-damon-core-use-mult_frac-in-damon_feed_loop_next_input.patch removed from -mm tree Message-Id: <20261013043249.2F4A41F000FF@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm/damon/core: use mult_frac() in damon_feed_loop_next_input() has been removed from the -mm tree. Its filename was mm-damon-core-use-mult_frac-in-damon_feed_loop_next_input.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: SJ Park Subject: mm/damon/core: use mult_frac() in damon_feed_loop_next_input() Date: Thu, 17 Sep 2026 07:22:01 -0700 damon_feed_loop_next_input() does its best effort overflow protection. score_goal_diff is always smaller than goal (10,000). Hence the calculation can be replaced to use mult_frac() without concerning the overflow. Use mult_frac(). Link: https://lore.kernel.org/20260917142210.90829-4-sj@kernel.org Signed-off-by: SJ Park Signed-off-by: Andrew Morton Reviewed-by: Asier Gutierrez Cc: Brendan Higgins Cc: David Gow Cc: David Hildenbrand Cc: Jonathan Corbet Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Randy Dunlap Cc: Shuah Khan Cc: Suren Baghdasaryan Cc: Vlastimil Babka --- mm/damon/core.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) --- a/mm/damon/core.c~mm-damon-core-use-mult_frac-in-damon_feed_loop_next_input +++ a/mm/damon/core.c @@ -2927,11 +2927,7 @@ static unsigned long damon_feed_loop_nex return min_input; score_goal_diff = abs_diff(score, goal); - - if (last_input < ULONG_MAX / score_goal_diff) - compensation = last_input * score_goal_diff / goal; - else - compensation = last_input / goal * score_goal_diff; + compensation = mult_frac(last_input, score_goal_diff, goal); if (over_achieving) return max(last_input - compensation, min_input); _ Patches currently in -mm which might be from sj@kernel.org are mm-damon-core-introduce-damos_quota_goal-complement.patch mm-damon-core-add-complement-argument-to-damos_new_quota_goal.patch mm-damon-sysfs-schemes-support-quota-goal-complement-flag.patch mm-damon-tests-core-kunit-test-quota_goal-complement-commit.patch selftests-damon-sysfssh-test-quota-goal-complement-flag-file.patch docs-mm-damon-design-document-damos-quota-goal-complement-flag.patch docs-admin-guide-mm-damon-usage-update-for-quota-goal-complement-file.patch docs-abi-damon-update-for-quota-goal-metric-complement-sysfs-file.patch