From nobody Fri Dec 19 16:53:31 2025 Received: from mail-pl1-f177.google.com (mail-pl1-f177.google.com [209.85.214.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 09F381CF5C3 for ; Wed, 4 Sep 2024 08:41:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725439265; cv=none; b=sKxypGBIDJlg7co0VUjZnRIkEnwwocK5uJ900tH73rf7oa7jTTWRx5vQtahtJHBLTlazMiV+OyL7gwXA3+YKjk08iMHSpWP7UANyws5X4r2DiulAp+5Jlq180qJyCGVSPmDAHE3RfUo24wUy8Ws7qogz3/IZKWCpvYF+G+y5gyI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725439265; c=relaxed/simple; bh=Ks+ctZjoe6oexIKNJorWHsj/FHxBIY1SArqgBxdFKSU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=FDM76jLAm0IAsHtijjo/ocpXjuglqqNXLkCCVE9e6kn8ZJq8qw+qiFclQCGvtxzeBr+MRMmpq8Lux94yjTjY4S93WAH3ulfechSsl59wFl1q+Y/EWGirQ4vZVAXP3ToOpHx+JWpHiypglut+l14kwgGU3oAzCn3Ah1zjYZk4L0w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=bytedance.com; spf=pass smtp.mailfrom=bytedance.com; dkim=pass (2048-bit key) header.d=bytedance.com header.i=@bytedance.com header.b=V2hc6NaB; arc=none smtp.client-ip=209.85.214.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=bytedance.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bytedance.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bytedance.com header.i=@bytedance.com header.b="V2hc6NaB" Received: by mail-pl1-f177.google.com with SMTP id d9443c01a7336-20573eb852aso3452365ad.1 for ; Wed, 04 Sep 2024 01:41:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1725439263; x=1726044063; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=7WBwKEY9MWquOlo01BPdpzLz4TZdRIsQgPATlcDwMyk=; b=V2hc6NaBrZkWeQ0WQyvpl2gJ76mcNH2gR+15KXmAYJb8WXMaw3FCdaJL45jSV5xX/I No/yREwGCzNI6qRIFgnANtmslsaBBNq4jx2COw2gC+edRn2c56mdZuZZmI2qAsrXeN20 vtJfCNRAePt9G9d992zvuzNXdGyfW5DkTGRt56ARDuAUValARVZtDtGQ/CvnvK1Oanmk mTEHKML0CkmM2/y3PB/PARPHU9POC2D0mLuANdx3L4WwhzkxQbBNhbIyo9YnB0NgkKgA DTEu+L9+UHmeog9gUAGQYtbM0iXukANUj4Z3ThjqmjpUXZwDeUMFOCOstaHVW2xpFcU+ GQVg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725439263; x=1726044063; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=7WBwKEY9MWquOlo01BPdpzLz4TZdRIsQgPATlcDwMyk=; b=F1QClwJIXCMFpf7YdroD29mOEmQV3u/qIR4QxBaSX6wUQPXKw7OtCBbD4oIJBOCOPl GCzOS2kyR1p6e4t+Ra/S9fQkFG2qNDKcunXoay9S+AFgc0psHDg9SF1ZmCgkgOoJG+VJ 7MpHkGBd8fH1OndsblGM58PzZh8VNDbbTs85R+jaL7E6i+0ed3Y7q6l2KreC+o7WsLBd 86dmYygY3JhNxDlaLmbBQhLzGnlau4k3xzDfwzwmTFNa0FFZpPDb3DcI3p0/S0lt+hoC TiL/6FLvfKmg3tJMIkNXeWLofGRLgIuxZsr/99QzzUGE1Br9+TGqm0eiJws4QPFj735M GI9Q== X-Gm-Message-State: AOJu0YzdzB4rCppTHm804PbAY/V+9u96nhydL5V0xN5ml4uFRi5urNnG pLczLdPWbsCHN29LZWpw0KrMK83i9tSJQs/xeX6D1LbnPql4yQAvekdlMoMJVaw= X-Google-Smtp-Source: AGHT+IFosxGKKraD23O7QyExDWz973MicB0gfFUEF3j/RrDnY2sLd35727GFsppJnEl62/xkyI7W0A== X-Received: by 2002:a17:902:c412:b0:204:e471:8f06 with SMTP id d9443c01a7336-206b83566dcmr20294065ad.17.1725439263160; Wed, 04 Sep 2024 01:41:03 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([139.177.225.242]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-206ae95a51csm9414045ad.117.2024.09.04.01.40.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Sep 2024 01:41:02 -0700 (PDT) From: Qi Zheng To: david@redhat.com, hughd@google.com, willy@infradead.org, muchun.song@linux.dev, vbabka@kernel.org, akpm@linux-foundation.org, rppt@kernel.org, vishal.moola@gmail.com, peterx@redhat.com, ryan.roberts@arm.com, christophe.leroy2@cs-soprasteria.com Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, Qi Zheng Subject: [PATCH v3 03/14] powerpc: assert_pte_locked() use pte_offset_map_ro_nolock() Date: Wed, 4 Sep 2024 16:40:11 +0800 Message-Id: <20240904084022.32728-4-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20240904084022.32728-1-zhengqi.arch@bytedance.com> References: <20240904084022.32728-1-zhengqi.arch@bytedance.com> 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" In assert_pte_locked(), we just get the ptl and assert if it was already held, so convert it to using pte_offset_map_ro_nolock(). Signed-off-by: Qi Zheng Acked-by: David Hildenbrand Reviewed-by: Muchun Song --- arch/powerpc/mm/pgtable.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index 7316396e452d8..61df5aed79894 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -398,7 +398,7 @@ void assert_pte_locked(struct mm_struct *mm, unsigned l= ong addr) */ if (pmd_none(*pmd)) return; - pte =3D pte_offset_map_nolock(mm, pmd, addr, &ptl); + pte =3D pte_offset_map_ro_nolock(mm, pmd, addr, &ptl); BUG_ON(!pte); assert_spin_locked(ptl); pte_unmap(pte); --=20 2.20.1