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 323EC371899 for ; Mon, 31 Aug 2026 21:35:28 +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=1788212130; cv=none; b=Elqm5fFUys1Gu4dyZL4Gbmo0N18pP9IqXHiOby65lzdoAeiieac3vlhqA4xZMTVOJtPNRdDpQTZ0p0FmAZ71oKbGEKMmd+qsuxoHBbYSc4M68PqUPnPXPxOI+Wg7K9l0W1lp/PGfkP8SsSdO1yE2zOWST1uq/9tg31hhZyGe06I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788212130; c=relaxed/simple; bh=XMT6O/0uHqSXF0X1GZP4ItDvSrgNNBjiUsDm/RIY5J0=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=JoBXGkrGiUzyQBcMfaFFR2VZEkAl/hEd5EGW3Z+tjqM+h76NwTldG4WAWfYHxvawuKyLcgPxNY5BmRKm+pS62TgmtLELbAc7z70dAiMVc6GK90cv/Xp+rGW9UGUDEx9Im1/vmgwxihQPiX4qOut/xRyPeW0oFM0s6+3IJIrY1e4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DF/Gckxx; 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="DF/Gckxx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B1D0F1F000E9; Mon, 31 Aug 2026 21:35:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788212128; bh=XMT6O/0uHqSXF0X1GZP4ItDvSrgNNBjiUsDm/RIY5J0=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=DF/GckxxkarxJC8xZ1yaKDWBT/IvdsOcM+j1woVIesdU6r2eYLDtKRhA2MPNMK8Xo 86B2paQvVA383OooBL1mm3eENMgVH3OTaWZuUmfw955kATW7QnUc7hjOSf8XGJ6xY+ oP8U8QcRdJArU2m94inmgir6JZgmXW8zHIMLhwxkbOK9juTXO3TJquFK7ho/O3ns7F B9klzOwVP97gfr18xe40QaWmgA8pgB5Yp1Qq6j0RwN9LoYB1jYPap2/vOvALVDOyUc 4nvi5sXNGrUC3Z0tnmowvM/IwxJTkCB6IBiRHaQE24hM/WyDDG/Nk1r/6v6KJ+TB8I ykMfiiXaUqVDA== From: sashiko-bot@kernel.org Subject: Re: [PATCH v2 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: <20260831-remove-pg_private-v2-2-3668159cd9e8@nvidia.com> References: <20260831-remove-pg_private-v2-0-3668159cd9e8@nvidia.com> <20260831-remove-pg_private-v2-2-3668159cd9e8@nvidia.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Mon, 31 Aug 2026 21:35:28 +0000 Message-Id: <20260831213528.B1D0F1F000E9@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/20260831-remove-pg_= private-v2-0-3668159cd9e8@nvidia.com?part=3D2