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[156.151.31.85]) by mx.google.com with ESMTPS id w8si2102004plz.37.2019.02.14.02.56.10 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 14 Feb 2019 02:56:10 -0800 (PST) Received-SPF: pass (google.com: domain of william.kucharski@oracle.com designates 156.151.31.85 as permitted sender) client-ip=156.151.31.85; Authentication-Results: mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2018-07-02 header.b=FRLmD30R; spf=pass (google.com: domain of william.kucharski@oracle.com designates 156.151.31.85 as permitted sender) smtp.mailfrom=william.kucharski@oracle.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x1EAn0os187554; Thu, 14 Feb 2019 10:56:00 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=content-type : mime-version : subject : from : in-reply-to : date : cc : content-transfer-encoding : message-id : references : to; s=corp-2018-07-02; bh=MnGiBnQN2atIOsmm2xtueuCS5wsVO8PurpyWe54oMEY=; b=FRLmD30RcQReYecFBxI9oMI/5aXV+duA4KBSBunkGGhGpFqeMB40KJIMWKgRqzg5rOmW 8XyR3cjW2FGQARhFEshHXsJVbTrwVCbiXGHWwRexsHc1y/2/s6B32pG/xw8yN588TRDK MsRJZlIEiWfy46c8yn2OgjZuGcvVyHCrvGtmmGNy25ZefRRcFu8fxTx7G5S5tMCMNU1X 8KZVO87X2USuIoF0No67oFRbWBDxeOf5mfGPXk1rpaEbzUzol683V82Tdmye7aXkuN8h abIWJBlOqEnTB8BtNC2eSNLhGaIOCHsWIs8t1Yr/RKIV3KThFIWp9+OF1qTYeakEwfwe hA== Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by userp2120.oracle.com with ESMTP id 2qhree7b1b-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 14 Feb 2019 10:56:00 +0000 Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserv0022.oracle.com (8.14.4/8.14.4) with ESMTP id x1EAtrm0000306 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 14 Feb 2019 10:55:53 GMT Received: from abhmp0004.oracle.com (abhmp0004.oracle.com [141.146.116.10]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id x1EAtq7D014060; Thu, 14 Feb 2019 10:55:52 GMT Received: from [192.168.0.110] (/73.243.10.6) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 14 Feb 2019 02:55:52 -0800 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.2\)) Subject: Re: [LSF/MM TOPIC] (again) THP for file systems From: William Kucharski In-Reply-To: <20190213235959.GX12668@bombadil.infradead.org> Date: Thu, 14 Feb 2019 03:55:50 -0700 Cc: Song Liu , "lsf-pc@lists.linux-foundation.org" , "linux-mm@kvack.org" , linux-kernel , linux-raid , "bpf@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "Kirill A. Shutemov" Content-Transfer-Encoding: 7bit Message-Id: <98E2D333-409A-47AF-886F-3E661BD1C4EE@oracle.com> References: <77A00946-D70D-469D-963D-4C4EA20AE4FA@fb.com> <20190213235959.GX12668@bombadil.infradead.org> To: Matthew Wilcox X-Mailer: Apple Mail (2.3445.104.2) X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9166 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902140079 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 Feb 13, 2019, at 4:59 PM, Matthew Wilcox wrote: > > I believe the direction is clear. It needs people to do the work. > We're critically short of reviewers. I got precious little review of > the original XArray work, which made Andrew nervous and delayed its > integration. Now I'm getting little review of the followup patches > to lay the groundwork for filesystems to support larger page sizes. > I have very little patience for this situation. I'll be happy to dive in and look at the changes from an mm point of view, but I don't feel qualified to comment on all the file system considerations. Perhaps if someone from the fs side would volunteer; I know well how frustrating it can be to be trapped in code review suspended animation.