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[23.128.96.18]) by mx.google.com with ESMTP id i6si4134998edv.52.2020.07.16.16.17.32; Thu, 16 Jul 2020 16:17:55 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2020-01-29 header.b=d1BIlQya; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726514AbgGPXRY (ORCPT + 99 others); Thu, 16 Jul 2020 19:17:24 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:55426 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726189AbgGPXRX (ORCPT ); Thu, 16 Jul 2020 19:17:23 -0400 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 06GNDPgK088443; Thu, 16 Jul 2020 23:17:07 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=corp-2020-01-29; bh=8jtki/pU95bZMs51t72Fvdic/OjDlvBAeH0vxva+v1M=; b=d1BIlQyasWZQ9MBtOcWLb43omvjPgkZWmnYzB71AFO0OcQc+6doqyh8kCIQnKRDmFggS xZsMl0rbWhLZRY66Kwjdho6Q7gptc2icRRCVHEaKHyLYaUWCNaX4Vrhs+tkBcLGSf1AJ HMJybpVlmy4UNTSTNnq+xjoHHQs98r2OTElwLvyZPGHDliwl/RSX6+SNQzSzBavtNA+Z oV98Ev4fcwSrtUr3k+vFBmFL7LzpSATz8Y+J9AVj+Xvco0eUBKZ2RkaSEvGPgfbaJPRg 8Qv1Q/MFs9S9Tjj3/ynJ7n7YQbfrc7VrJWCTYvSsapQaq/X34KorYouq+TU70KjwLAUu jg== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by aserp2120.oracle.com with ESMTP id 3275cmm8mr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 16 Jul 2020 23:17:07 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 06GNDiTN111977; Thu, 16 Jul 2020 23:15:06 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3020.oracle.com with ESMTP id 327qbctyd5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 16 Jul 2020 23:15:06 +0000 Received: from abhmp0013.oracle.com (abhmp0013.oracle.com [141.146.116.19]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 06GNF3TF013005; Thu, 16 Jul 2020 23:15:04 GMT Received: from [192.168.2.112] (/50.38.35.18) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 16 Jul 2020 16:15:03 -0700 Subject: Re: [PATCH v4 03/15] mm,madvise: call soft_offline_page() without MF_COUNT_INCREASED To: Oscar Salvador , akpm@linux-foundation.org Cc: mhocko@suse.com, linux-mm@kvack.org, david@redhat.com, aneesh.kumar@linux.vnet.ibm.com, naoya.horiguchi@nec.com, linux-kernel@vger.kernel.org, Naoya Horiguchi , Oscar Salvador References: <20200716123810.25292-1-osalvador@suse.de> <20200716123810.25292-4-osalvador@suse.de> From: Mike Kravetz Message-ID: <0467947a-4306-bc36-2c5e-04e578990d36@oracle.com> Date: Thu, 16 Jul 2020 16:15:01 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: <20200716123810.25292-4-osalvador@suse.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9684 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 malwarescore=0 mlxscore=0 spamscore=0 phishscore=0 suspectscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007160149 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9684 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 priorityscore=1501 bulkscore=0 adultscore=0 lowpriorityscore=0 phishscore=0 spamscore=0 impostorscore=0 malwarescore=0 mlxlogscore=999 clxscore=1011 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007160149 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/16/20 5:37 AM, Oscar Salvador wrote: > From: Naoya Horiguchi > > The call to get_user_pages_fast is only to get the pointer to a struct > page of a given address, pinning it is memory-poisoning handler's job, > so drop the refcount grabbed by get_user_pages_fast > > Signed-off-by: Naoya Horiguchi > Signed-off-by: Oscar Salvador Reviewed-by: Mike Kravetz -- Mike Kravetz