From nobody Wed Feb 11 10:05:59 2026 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) (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 6904214A4E7 for ; Tue, 21 May 2024 23:55:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.177.32 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716335756; cv=none; b=BOTJzG7hXY2GIz9+O2S3ryP2kDZF89OHNtcNeQ4v1ZK7/YDDFKlKJeqdc4oq9sl704PNAe/hp+su/SYU06hcwGIcp4lwL2wC80Dh/DaUkKM2d7dFtFG28P/kypgakve4RW0Lr43n/gj2XGiBMs5ljC9cxOCF9lwHzJs5TjW1nBY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716335756; c=relaxed/simple; bh=ihTcaZfF9lRkBEAHfa67ibCvGJNlg5fyNNR5cehumz4=; h=From:To:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Ozxrsy0GoGgBWsQr9oIrKNTkhJUx2RdOB6SP78tYHgm2zYUW+TipUttqVV+VrlVLssznQlE0FjenLZxyD585EfE1adiv2yG1TdkMTRqFjeMxDAwC+JGOWsjNqeMhqKzcCH0OpbUGsjenPZZ7qR3M5nhrMdqcwwb5jYiypSU9O/Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=h3CrhepT; arc=none smtp.client-ip=205.220.177.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="h3CrhepT" Received: from pps.filterd (m0246631.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 44LJi8dZ025724; Tue, 21 May 2024 23:55:40 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=corp-2023-11-20; bh=frA7aS1vLKTncyYL7L1DmGtD13xbXGlpWxyw+e4B7WM=; b=h3CrhepTNn/GaGgIJzZhqtsA7faeT1QZf89SKUeSOVcUQEJKLeokWgdytocXbQ/tR6wd mvdIHTnqEutpHvRGnRnDRNy0BeIXtqXtEbZ19zn0/AMebwZaz97AqmHJl6VA8GQ9RSTX pkUkL+cbnjeDIQ9wc72PTtUQeyieP/pbryXb98HMIJAmqNl+yM1zEXbTU2pRXuNfmKWU FPTPhJh4CglqeOBXb7DRzY9IM3xTiV1SHJRB6BybSR0VEj91El9FE9C8CCVzQpW2w7w1 ORy8M037XhGzohEkU3LnrD3PKhweG9vEWPfIaeaIiUMP5WMgGC7tBF7q/V3BPMrYnm8H 2g== Received: from iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta03.appoci.oracle.com [130.35.103.27]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3y6k466m2a-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 21 May 2024 23:55:40 +0000 Received: from pps.filterd (iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 44LMZkKi002667; Tue, 21 May 2024 23:55:39 GMT Received: from brm-x62-16.us.oracle.com (brm-x62-16.us.oracle.com [10.80.150.37]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3y6js8erce-5; Tue, 21 May 2024 23:55:39 +0000 From: Jane Chu To: linmiaohe@huawei.com, nao.horiguchi@gmail.com, akpm@linux-foundation.org, osalvador@suse.de, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 4/5] mm/memory-failure: move hwpoison_filter() higher up Date: Tue, 21 May 2024 17:54:28 -0600 Message-Id: <20240521235429.2368017-5-jane.chu@oracle.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240521235429.2368017-1-jane.chu@oracle.com> References: <20240521235429.2368017-1-jane.chu@oracle.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 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.650,FMLib:17.12.28.16 definitions=2024-05-21_14,2024-05-21_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 bulkscore=0 suspectscore=0 spamscore=0 mlxscore=0 adultscore=0 mlxlogscore=999 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2405010000 definitions=main-2405210182 X-Proofpoint-ORIG-GUID: fN-L7z8FkqKuAIhlYwvx_1gv1456QLzQ X-Proofpoint-GUID: fN-L7z8FkqKuAIhlYwvx_1gv1456QLzQ Content-Type: text/plain; charset="utf-8" Move hwpoison_filter() higher up as there is no need to spend a lot cycles only to find out later that the page is supposed to be skipped from hwpoison handling. Signed-off-by: Jane Chu Acked-by: Miaohe Lin Reviewed-by: Oscar Salvador --- mm/memory-failure.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 1e22d73c9329..794196951a04 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -2301,6 +2301,18 @@ int memory_failure(unsigned long pfn, int flags) } =20 folio =3D page_folio(p); + + /* filter pages that are protected from hwpoison test by users */ + folio_lock(folio); + if (hwpoison_filter(p)) { + ClearPageHWPoison(p); + folio_unlock(folio); + folio_put(folio); + res =3D -EOPNOTSUPP; + goto unlock_mutex; + } + folio_unlock(folio); + if (folio_test_large(folio)) { /* * The flag must be set after the refcount is bumped @@ -2364,14 +2376,6 @@ int memory_failure(unsigned long pfn, int flags) */ page_flags =3D folio->flags; =20 - if (hwpoison_filter(p)) { - ClearPageHWPoison(p); - folio_unlock(folio); - folio_put(folio); - res =3D -EOPNOTSUPP; - goto unlock_mutex; - } - /* * __munlock_folio() may clear a writeback folio's LRU flag without * the folio lock. We need to wait for writeback completion for this --=20 2.39.3