From nobody Thu Dec 18 13:09:24 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A6D3014831E; Thu, 27 Feb 2025 01:58:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740621483; cv=none; b=qBzbSOKDKGPXACMxPfT2iViDzddkwL1uhCNOXNsCwXZ/fEpZefbo+sOTF+NB2gX6KW/UbEvHHtGWqjdtJFQukxn9qtZNpsUDQiXnlYQep/jFU8G6VYleKsOAt1LOXA/Nxs/JWK1jJNRGxdSIpezm8P3Q/aedGkLSzXrUAGEPA9E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740621483; c=relaxed/simple; bh=N/YtlGcWQ2PX0NMUIcuI8F7U0I6DV10Xf2TomWII3qk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=eSc8pwBMJBV5bTzlF+sldvUa4114xUsspHxxmF2OPCfm7UlJlQInLmUHkFN3nDZkpx65DLL9M+aJ2xXc5x2hqb0EcEBGN84OAWwyJ97Lxq34EbMPjqDUA4ahogZpJcEaafjIFHFPm2FlrnPA0dTyt5ux/PsOTzHe2RkbpKsc7oI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=t1dUbAnf; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="t1dUbAnf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 079F0C4CEE2; Thu, 27 Feb 2025 01:58:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1740621483; bh=N/YtlGcWQ2PX0NMUIcuI8F7U0I6DV10Xf2TomWII3qk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=t1dUbAnfFVOaSAla8yVUEws7sBVMN8BWmcjrpG4/6zKUr56c2+Hgd9MoRMyC7DcE+ 6eGzAOyhCaUMviM/3vJ6pFMlhbeVEg0jemrvzo/Edm7SrN+agFMW3fwmoaD8xrBMCb y7myLvuuU+3pID+CqtewZT+vjo/3aVeHbqEfBFYBwPOtkvlOU4QRFJTIjadPYKnENr 6ApnqsgnyiFci4rNtMiRv3JMog+qrrRbMV97PHlfoj47WicQ5NnM7xlL0uLEcC4gdy mlnjVmdd05ZDzVmcEC4jVaF/tjnP4RwkquBCakk3frYFaDAsRPoLacw0Zizdu3dQl8 /J+2uSXbBzwDg== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v2 2/9] mm/damon/paddr: support ops_filters Date: Wed, 26 Feb 2025 17:57:47 -0800 Message-Id: <20250227015754.38789-3-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250227015754.38789-1-sj@kernel.org> References: <20250227015754.38789-1-sj@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" DAMON keeps all DAMOS filters in damos->filters. No filter is saved in damos->ops_filters, but upcoming changes will make it to use damos->ops_filters to have all operations layer handled DAMOS filters. DAMON physical address space operations set implementation (paddr) is not ready for the changes, since it handles only damos->filters. To avoid any breakage during the upcoming changes, make paddr to handle both lists. After the change is made, ->filters support on paddr can be safely removed. Signed-off-by: SeongJae Park --- mm/damon/paddr.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c index 25090230da17..3e651308ba5d 100644 --- a/mm/damon/paddr.c +++ b/mm/damon/paddr.c @@ -257,6 +257,10 @@ static bool damos_pa_filter_out(struct damos *scheme, = struct folio *folio) if (damos_pa_filter_match(filter, folio)) return !filter->allow; } + damos_for_each_ops_filter(filter, scheme) { + if (damos_pa_filter_match(filter, folio)) + return !filter->allow; + } return false; } =20 @@ -287,6 +291,12 @@ static unsigned long damon_pa_pageout(struct damon_reg= ion *r, struct damos *s, break; } } + damos_for_each_ops_filter(filter, s) { + if (filter->type =3D=3D DAMOS_FILTER_TYPE_YOUNG) { + install_young_filter =3D false; + break; + } + } if (install_young_filter) { filter =3D damos_new_filter( DAMOS_FILTER_TYPE_YOUNG, true, false); @@ -535,6 +545,8 @@ static bool damon_pa_scheme_has_filter(struct damos *s) =20 damos_for_each_filter(f, s) return true; + damos_for_each_ops_filter(f, s) + return true; return false; } =20 --=20 2.39.5