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 57D2827FB18 for ; Tue, 8 Sep 2026 03:07:32 +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=1788836853; cv=none; b=OF4x+duezvHEECBEBmCIhWlqTBZO3AwAC52OXPTYJEfC26u1GlpnW+BmCsgCYhIm61jeXFY+Nv1uxuYBnX+YXS/SRn1f6RrPNUx9ApTdmqnjM81k9kAKRSMT23qIJ0Z4UwQXPqS80Q4v+FiKNLqVBlrwHcAeeuViC3ro27ramC8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788836853; c=relaxed/simple; bh=/nErJv/jUQCqBSBcaZjVJZYU+btd3l4YBQRgvJbA/QI=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=ThZM+sqb092ifAlDdqA2TmGcCwXQJwLx8+/0mzG8Vs2HEHJWAiHmcCENG3UrqoD2l+KfgQbwi78Y9ejA6w+9EKX9NfA15wRunDWYdN0lA4X3CRV4Mg8iJ7Q54qunYPQTV1usKtA9BGQF1DygKjbVDeKELuVc30uO0iFXKfVrYDI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FsWMODSv; 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="FsWMODSv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CB8301F00A3A; Tue, 8 Sep 2026 03:07:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788836851; bh=/nErJv/jUQCqBSBcaZjVJZYU+btd3l4YBQRgvJbA/QI=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=FsWMODSvtOPVZ6/QWQFBL+iXj68gYCSzRtAXvOgTvLRKFgFfONNQCmz/tdVCjZoHm tPgEFQKcJOPSdBlzzTLsuq7xEdd1bdMpqQe/mFxd7taKk75hn6XVTsJqDfUczX348N KvmMI6Rf7vOwvSms1qssVWF2RStO1FE+lxTcASP3oLlDydcYI1sPIoQwD8Vr38qf34 2DHc5fJBcTkcL4LcFAawI7RZm6CIHQLLWT4mkXFHV0NJJu4N8I3DE3hXfOiBLvLnRX erUX8oOvVl5h4/LNVOWlgVU4/Mruw1/txA3LLvHS4U+Oaj/bI/kVyOTqInBAgnWpJ4 LOCrPXR79Z2iw== From: sashiko-bot@kernel.org Subject: Re: [PATCH v3 02/14] 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: <20260907-remove-pg_private-v3-2-6ae22f9d9272@nvidia.com> References: <20260907-remove-pg_private-v3-0-6ae22f9d9272@nvidia.com> <20260907-remove-pg_private-v3-2-6ae22f9d9272@nvidia.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Tue, 08 Sep 2026 03:07:31 +0000 Message-Id: <20260908030731.CB8301F00A3A@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: Claude:claude-opus-4-8 > Assisted-by: Codex:gpt-5 > To: Peter Zijlstra > To: Ingo Molnar > To: Arnaldo Carvalho de Melo > [ ... ] > Cc: "H. Peter Anvin" > Cc: linux-perf-users@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Acked-by: Usama Arif > 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/20260907-remove-pg_= private-v3-0-6ae22f9d9272@nvidia.com?part=3D2