From nobody Fri Dec 19 13:25:48 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 49815322A27; Mon, 8 Dec 2025 06:30:42 +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=1765175443; cv=none; b=IIVILWxDA3VMOkAVFAYayomtPXMJTwEdiMsqHtEgMUIDUkAwNVliWRUGKzQqKVqQVWwSWkRFl3LOvjyWa5Mr9NTsKXFM3J8Rz8A6mGJpdFg050IYB85UFC15HHdbH2iL1qeVo+0Z9lkEq7WU5NcY4yjd2JtiiJWnQOqvLt1wArk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765175443; c=relaxed/simple; bh=3vYcUeBmXr4garxcQHjJx07QLWWSN2yZSMq4StEXQLo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TWHldEvoIZM4W8vOckU4yQp0j96DE88HYVbA9WGtrNQzEaaZqXvdTmQ6gcQ1EjpvQwRbeH/4rMApOSnFT2MjteGywpZNos/saU0POOQtPJO8Gwbn0NR6JIY4SY0iahrRtTlSiTHb3SNtD+fh5Oib00tYWKKojecK9tM1hwtqjEU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=P0xtLSkF; 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="P0xtLSkF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7AA08C4CEF1; Mon, 8 Dec 2025 06:30:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765175442; bh=3vYcUeBmXr4garxcQHjJx07QLWWSN2yZSMq4StEXQLo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=P0xtLSkFs7pqEae043u1j3xnB95Eun6fs+QGZgZO9d81R7nVANe8WzFd7INUNaH5J G0cu5g13QicS+7SpfXLfFYjeCO7OZky97UtEnCU1Fg8vOIqL0guCnn+Met1AgHKg5M 5NTPXJXNgEVF4hk8vk1FGAsAu82jhb0v522m+QxbyOFfL7UlnXHN/ha84/c+mqS2eq 0qSRuP9CaCpfcNNAkk+LdrdatyCNz+99Jk1hlLUrlAc3UBxmBAqyPlfv8/yoebiFZt WeGrFytSTuFCntaqviHlHDTKBMaMONUSg6xP56TYbN2K/XjRoJDfgJDnBS6pPwmnAS 6VzqV0nDquVZQ== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v3 34/37] mm/damon/core: report whether the page fault was for writing Date: Sun, 7 Dec 2025 22:29:38 -0800 Message-ID: <20251208062943.68824-35-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251208062943.68824-1-sj@kernel.org> References: <20251208062943.68824-1-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" The page fault event reporting function can know if the access was for writing or reading. Add the information to the report. Signed-off-by: SeongJae Park --- mm/damon/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/damon/core.c b/mm/damon/core.c index 782af39ef0c0..e2fd17b83a92 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -1732,6 +1732,7 @@ void damon_report_page_fault(struct vm_fault *vmf, bo= ol huge_pmd) .size =3D 1, /* todo: set appripriately */ .cpu =3D smp_processor_id(), .tid =3D task_pid_vnr(current), + .is_write =3D vmf->flags & FAULT_FLAG_WRITE, }; =20 if (huge_pmd) --=20 2.47.3