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 6470415665C for ; Mon, 21 Sep 2026 02:38:40 +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=1789958321; cv=none; b=gOtbEDL4fpLOmLwYvZ5G831RqOT0hwroAbxBkANp7B0d0LpIP9jMA9uWKr0kKCKZSZOQx9hRoloeKQXb/yZ1rpzkZsuyE30p2L5lYtM66NekiyD/DSH6lRmsydJ19lIJSiOCCbPoJWi8mBIJ6Fzg050fNJ9dou5fqCo6jNc547s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789958321; c=relaxed/simple; bh=qqhV0VRygie7DY0FhDg9x+DI0BwCWMlPJhd5ki46gZE=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=enDyDIPwtv7HoADUnHmm9Z+6cvNobot2yZF2vOAT13/RbYvbF/oRhCy/DHNI3EOP6LrLvfik34Pm8ShPNvlaJCAUue2/YbLhE4a62zb4WOG9e1/08eSrp+thXheD+ovQ7W0NMhObM+bIksDpaPeWLPnowOWMgkxfAWPsOTrRiZ8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=S+uKd18K; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="S+uKd18K" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E665D1F000FF; Mon, 21 Sep 2026 02:38:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789958320; bh=qqhV0VRygie7DY0FhDg9x+DI0BwCWMlPJhd5ki46gZE=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=S+uKd18KVYH7XPmmY08Rst+C5raSVSN8EYcKWmWPfUzw5zWvBeIR/NnX7UKd+8oLK J/oIX8isJLcpF9MNeyVowSPbWcjwnFTt4GPOUoz8skDV5lYSpmf82tof04I0yGXtWB rqVn9bWxp/24oVNYIcmlqOzixTEjHvy1pdFvfupXl7AfDPH0QaFcEBS/DcMyFejGRC mfdKKlkCRahyUzH8P57mII8arCXlo2Sw4Rbt5taRkBlMX4e0mspYCulwmv65ORLdfR dKyd7ugRYum0OkRaukmrRbr3nWgtZsrkCauAa0YWjqKzpHOFynXxmRZq6jDpTR2eC7 +c/aNOgcfOqNQ== From: sashiko-bot@kernel.org Subject: Re: [PATCH v5 02/17] perf/ring_buffer: stop using PG_private as AUX page high-order marker Reply-To: sashiko-reviews@lists.linux.dev To: "Zi Yan" Cc: linux-perf-users@vger.kernel.org In-Reply-To: <20260920-remove-pg_private-v5-2-bb68b6a21869@nvidia.com> References: <20260920-remove-pg_private-v5-0-bb68b6a21869@nvidia.com> <20260920-remove-pg_private-v5-2-bb68b6a21869@nvidia.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Mon, 21 Sep 2026 02:38:39 +0000 Message-Id: <20260921023839.E665D1F000FF@smtp.kernel.org> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > A high-order AUX page sets PG_private on its first page and stores the > order in first_page->private. Stop using PG_private and check > first_page->private for AUX page order only in the ring buffer and its > users. This is fine because page->private is 0 for order-0 AUX pages, > matching the page order. >=20 > It prepares for a future commit that remove PG_private. >=20 > No functional change intended. >=20 > Assisted-by: LLM > To: Peter Zijlstra > To: Ingo Molnar > To: Arnaldo Carvalho de Melo > To: Namhyung Kim > [ ... ] > Cc: linux-perf-users@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Acked-by: Usama Arif > Acked-by: David Hildenbrand (Arm) > Signed-off-by: Zi Yan Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260920-remove-pg_= private-v5-0-bb68b6a21869@nvidia.com?part=3D2