From nobody Sun Feb 8 11:16:56 2026 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 79733EEA8 for ; Mon, 6 Oct 2025 05:52:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759729944; cv=none; b=fKF3dev4T1AeNMdB1nX/S6fq4pTL1hlZ3g7DawVxEfKBykZXxaEdcNOrqltws4QaD5DkuVsYd2uGYJrqfVdudelbYayVXfXOb5F/z5rvnqv8bEifkXAYZNWi3R6qlUAu04JMv6Id5SRd1ql3GnXfqBk7BTFBtHntqGX2l5C0ro8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759729944; c=relaxed/simple; bh=qY3qCRDZ7NEOGKCtGNtjypd/KmSsT/S+ooPu525NMd8=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=CotLakFZ7Ty+OXrZ8AgCBCg6Jo1m6smV+fdfNP2FBnEg7ZyEtFOpVa3nTN4OXy/TnPzXMqeRsbBS7YaiA1mnZtF33N2Z/vCdqK5YQ883IM+mFgMsAJxoMg1sWg0GIFFKVL+Z3Lk1x7sbn3RjyhgWSFB+ltPIm76RMoqsx3X+CRY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8086C1424; Sun, 5 Oct 2025 22:52:12 -0700 (PDT) Received: from ergosum.cambridge.arm.com (ergosum.cambridge.arm.com [10.1.196.45]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 8B84B3F59E; Sun, 5 Oct 2025 22:52:19 -0700 (PDT) From: Anshuman Khandual To: linux-mm@kvack.org Cc: Anshuman Khandual , Andrew Morton , David Hildenbrand , linux-kernel@vger.kernel.org Subject: [PATCH] mm/dirty: Replace READ_ONCE() with pudp_get() Date: Mon, 6 Oct 2025 06:52:14 +0100 Message-Id: <20251006055214.1845342-1-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.30.2 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" Replace READ_ONCE() with a standard page table accessor i.e pudp_get() that anyways defaults into READ_ONCE() in cases where platform does not override Cc: Andrew Morton Cc: David Hildenbrand Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual Acked-by: David Hildenbrand Reviewed-by: Dev Jain Reviewed-by: Oscar Salvador --- mm/mapping_dirty_helpers.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/mapping_dirty_helpers.c b/mm/mapping_dirty_helpers.c index c193de6cb23a..737c407f4081 100644 --- a/mm/mapping_dirty_helpers.c +++ b/mm/mapping_dirty_helpers.c @@ -149,7 +149,7 @@ static int wp_clean_pud_entry(pud_t *pud, unsigned long= addr, unsigned long end, struct mm_walk *walk) { #ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD - pud_t pudval =3D READ_ONCE(*pud); + pud_t pudval =3D pudp_get(pud); =20 /* Do not split a huge pud */ if (pud_trans_huge(pudval)) { --=20 2.30.2