From nobody Wed Apr 8 00:04:11 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EE0E4C4332F for ; Fri, 21 Oct 2022 03:10:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229868AbiJUDKe (ORCPT ); Thu, 20 Oct 2022 23:10:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40104 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229670AbiJUDK0 (ORCPT ); Thu, 20 Oct 2022 23:10:26 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8851FACF4C; Thu, 20 Oct 2022 20:10:21 -0700 (PDT) Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 29L31J72008126; Fri, 21 Oct 2022 03:10:16 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=qcppdkim1; bh=DsTItPlUtBGJbVGMl/Jdnss/A3xtazN0EmWPLV0xHSk=; b=WL8/QEuSWF/6Yw/gVnj7VLBTq/HZZ/+QDdGjjP6EgcpFGdLUmnoI/eKITgTvkoEy86O+ RGYAa74XnrafHBTmxW7OFzY4Zi+bU4UoESdlhJpsiGo2mXwVofF/Tbjfsh8LhuVS+bY5 5xwqiAHEUoB6ZhOe77Xj/ma+G8Ly5PmJ4a1cbAtp1xaeHDusfA+R1cRXz1IMaOHeB+XA H34sCiGhWFLFCqTa0sGwTgIyraxbhMVk0YbZtVGLP7hJXO1aJVCtUiVfhoQCUd1IOvWM 29IFeAYm2BmkRkTnqi/Zr0A7SxANepnmQvAxR5TNaRcVqlCvj5JlxAlX+zFZziRJWnyX bQ== Received: from nasanppmta04.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3kawde3fu5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 21 Oct 2022 03:10:15 +0000 Received: from pps.filterd (NASANPPMTA04.qualcomm.com [127.0.0.1]) by NASANPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 29L38WhU016313; Fri, 21 Oct 2022 03:10:15 GMT Received: from pps.reinject (localhost [127.0.0.1]) by NASANPPMTA04.qualcomm.com (PPS) with ESMTPS id 3kbk40028n-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 21 Oct 2022 03:10:15 +0000 Received: from NASANPPMTA04.qualcomm.com (NASANPPMTA04.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 29L374de015218; Fri, 21 Oct 2022 03:10:15 GMT Received: from nasanex01a.na.qualcomm.com ([10.52.223.231]) by NASANPPMTA04.qualcomm.com (PPS) with ESMTPS id 29L3AEtG018837 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 21 Oct 2022 03:10:15 +0000 Received: from aiquny2-gv.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Thu, 20 Oct 2022 20:10:11 -0700 From: Maria Yu To: , , , , CC: Maria Yu , , , Subject: [PATCH] mm/page_isolation: fix clang deadcode warning Date: Fri, 21 Oct 2022 11:09:53 +0800 Message-ID: <20221021030953.34925-1-quic_aiquny@quicinc.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: HqqFb_mtPIrkgfSpJYEGURS8f9LH0LXi X-Proofpoint-ORIG-GUID: HqqFb_mtPIrkgfSpJYEGURS8f9LH0LXi X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-10-20_13,2022-10-20_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 mlxlogscore=660 malwarescore=0 clxscore=1011 phishscore=0 mlxscore=0 spamscore=0 lowpriorityscore=0 priorityscore=1501 bulkscore=0 adultscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2209130000 definitions=main-2210210017 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" When !CONFIG_VM_BUG_ON, there is warning of clang-analyzer-deadcode.DeadStores: Value stored to 'mt' during its initialization is never read. Signed-off-by: Maria Yu --- mm/page_isolation.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/mm/page_isolation.c b/mm/page_isolation.c index 04141a9bea70..51d5c8025f77 100644 --- a/mm/page_isolation.c +++ b/mm/page_isolation.c @@ -330,9 +330,7 @@ static int isolate_single_pageblock(unsigned long bound= ary_pfn, int flags, zone->zone_start_pfn); =20 if (skip_isolation) { - int mt =3D get_pageblock_migratetype(pfn_to_page(isolate_pageblock)); - - VM_BUG_ON(!is_migrate_isolate(mt)); + VM_BUG_ON(!is_migrate_isolate(get_pageblock_migratetype(pfn_to_page(isol= ate_pageblock)))); } else { ret =3D set_migratetype_isolate(pfn_to_page(isolate_pageblock), migratet= ype, flags, isolate_pageblock, isolate_pageblock + pageblock_nr_pages); --=20 2.17.1