From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794165384; b=mcg/opMLaXXdW+o5oWAkkOJLVpPYW3MltkXr10a/FyljVaZkRqYJw+TiW8Sq7HKqAjxU XGyGxu2vO0/OgBdIwb98HUE5AWE+mPXApITciDaeCniDEtHorxRgtmh/NgSLzwHAAUQVx G7UBm8BtAEnBS0qGvD5FiQR5l4BLBZN7pSontdaiB0w8xxpNl+N/AduKxWy6B4PAQ2jaE 9t/qnPboCFDTyHzGdDS8D0kL5+T0nM10Wl1Xro7fN0LI+JJHSkK3xAbtmXLqiqUFpCh6O ZwTlFc4WFrEFqLPMJTEyY4ALPj7qVai0MhHVcTsjhGh576BZWAlbHfeJnsapYX53oDg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794165384; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; bh=hDPWmvInaWp2wgeM0od2Li5jTmlC0VSnDu9Tp3ujlp4=; b=ZI+/9S8sq+2ltNbgzrhZccIDDLHAm9WKZ8ZZIUBeFle1fHwUaxMN1IqblLH8wXB//gVW pgCm19rrFlyvg20leHjNqoXPVkm7PSiQc7fXzn3v1eFSP+2PEFjKq8e6f+WZu3PSs4M5K EkUCIt86UQjzOXls6SqjIRiKkQHWJnELdNDkK/laIVR/cR01pOJMCm8w3l0K6hXRi47Zj OB7lwDk2bGfxDhyNInlJNkEgKByKwjm/EZ+qYEjkbtjEKVriXifm9C361m1wEm11vELVU jMOVf51TVzIX2vy0ioLWKkOnotey5WitjFlSjJ/YcIeMqxPONxoC79ky09m5JJ8RyCA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=DWRYdLW0; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F3F29606A321; Sun, 8 Nov 2026 19:16:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=DWRYdLW0 Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB0B51F008A1; Sun, 8 Nov 2026 19:16:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794165383; bh=hDPWmvInaWp2wgeM0od2Li5jTmlC0VSnDu9Tp3ujlp4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=DWRYdLW03GiWffLovga+Iq0EPnZ9NHj2rUQxCvGN/uZLj1mfIAYRrpUl63hEZLGh1 De44HsD471r11Pex1jM0Ayr9muj5myH/MAjuPC317KyAjisdknFpw7azOJP8AZrScv 3f1GsSNjhIF6kfVuSSMSXHRFSgP9J9DBZZlYmxKp/f1Umm7+e6icYYu91JAaHFl+DC JthQKu6mwILUWW+7kI6FRkmGeGZImX7V32AtlPxZCAZl1VsX00VVxSPFXJboSKZWRM mVGQvffWVcr8T2vQ06WF83ogzi7Cl1xsteTA5hpkKK2FwrJXvt4bB061o6p1q3bqpP kGG21wZE41Unw== From: SJ Park To: Cc: SJ Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 2/4] mm/damon/ops-common: implement DAMON_FILTER_TYPE_ACTIVE operation Date: Sun, 8 Nov 2026 11:16:12 -0800 Message-ID: <20261108191615.113362-3-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20261108191615.113362-1-sj@kernel.org> References: <20261108191615.113362-1-sj@kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Implement DAMON_FILTER_TYPE_ACTIVE operation. Use folio_test_active() to show if the folio of the given memory is on an active LRU list. The implementation is made on ops-common, so both vaddr and paddr gain the support of the filter type. Signed-off-by: SJ Park --- mm/damon/ops-common.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/mm/damon/ops-common.c b/mm/damon/ops-common.c index b9571f53e538c..2216a0023154f 100644 --- a/mm/damon/ops-common.c +++ b/mm/damon/ops-common.c @@ -574,6 +574,13 @@ bool damon_ops_filter_match(struct damon_filter *filter, struct folio *folio) matched = filter->range_min <= folio_sz && folio_sz <= filter->range_max; break; + case DAMON_FILTER_TYPE_ACTIVE: + if (!folio) { + matched = false; + break; + } + matched = folio_test_active(folio); + break; default: break; } -- 2.47.3