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Thu, 12 Mar 2020 17:30:15 +0000 Received: from pps.filterd (aserp3030.oracle.com [127.0.0.1]) by aserp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 02CHSFDd109698; Thu, 12 Mar 2020 17:30:15 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserp3030.oracle.com with ESMTP id 2yqkvn265d-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 12 Mar 2020 17:30:15 +0000 Received: from abhmp0004.oracle.com (abhmp0004.oracle.com [141.146.116.10]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 02CHUCMl000536; Thu, 12 Mar 2020 17:30:12 GMT Received: from [192.168.1.206] (/71.63.128.209) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 12 Mar 2020 09:34:34 -0700 USER-AGENT: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 Content-Language: en-US MIME-Version: 1.0 Message-ID: Date: Thu, 12 Mar 2020 09:34:32 -0700 (PDT) From: Mike Kravetz To: Qian Cai , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Michal Hocko , Hugh Dickins , Naoya Horiguchi , "Aneesh Kumar K.V" , Andrea Arcangeli , "Kirill A.Shutemov" , Davidlohr Bueso , Prakash Sangappa , Andrew Morton Subject: Re: [PATCH 0/2] hugetlbfs: use i_mmap_rwsem for more synchronization References: <20200305002650.160855-1-mike.kravetz@oracle.com> <1584028670.7365.182.camel@lca.pw> In-Reply-To: <1584028670.7365.182.camel@lca.pw> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9558 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=60 mlxlogscore=999 malwarescore=0 adultscore=0 bulkscore=0 mlxscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2003120089 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9558 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=60 spamscore=0 mlxscore=0 priorityscore=1501 lowpriorityscore=0 bulkscore=0 mlxlogscore=999 phishscore=0 adultscore=0 clxscore=1015 impostorscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2003120089 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 3/12/20 8:57 AM, Qian Cai wrote: > On Wed, 2020-03-04 at 16:26 -0800, Mike Kravetz wrote: >> While discussing the issue with huge_pte_offset [1], I remembered that >> there were more outstanding hugetlb races. These issues are: > > Reverted this series on the top of today's linux-next fixed the hang with LTP > move_pages12 on both powerpc and arm64, > > # /opt/ltp/testcases/bin/move_pages12 > tst_test.c:1217: INFO: Timeout per run is 0h 05m 00s > move_pages12.c:263: INFO: Free RAM 260577280 kB > move_pages12.c:281: INFO: Increasing 2048kB hugepages pool on node 0 to 4 > move_pages12.c:291: INFO: Increasing 2048kB hugepages pool on node 8 to 4 > move_pages12.c:207: INFO: Allocating and freeing 4 hugepages on node 0 > move_pages12.c:207: INFO: Allocating and freeing 4 hugepages on node 8 > Thank you for finding this. I'll dig into it. It is timing related as it takes a few test runs for me to reproduce. Sorry for the issues. Feel free to revert upstream and mm tree until there is a resolution. -- Mike Kravetz