From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E7B71C282D7 for ; Wed, 30 Jan 2019 18:01:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C687A20869 for ; Wed, 30 Jan 2019 18:01:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727837AbfA3SBg convert rfc822-to-8bit (ORCPT ); Wed, 30 Jan 2019 13:01:36 -0500 Received: from mga14.intel.com ([192.55.52.115]:10892 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725446AbfA3SBg (ORCPT ); Wed, 30 Jan 2019 13:01:36 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Jan 2019 10:01:36 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,541,1539673200"; d="scan'208";a="112386287" Received: from fmsmsx104.amr.corp.intel.com ([10.18.124.202]) by orsmga006.jf.intel.com with ESMTP; 30 Jan 2019 10:01:35 -0800 Received: from fmsmsx155.amr.corp.intel.com (10.18.116.71) by fmsmsx104.amr.corp.intel.com (10.18.124.202) with Microsoft SMTP Server (TLS) id 14.3.408.0; Wed, 30 Jan 2019 10:01:34 -0800 Received: from crsmsx152.amr.corp.intel.com (172.18.7.35) by FMSMSX155.amr.corp.intel.com (10.18.116.71) with Microsoft SMTP Server (TLS) id 14.3.408.0; Wed, 30 Jan 2019 10:01:34 -0800 Received: from crsmsx101.amr.corp.intel.com ([169.254.1.57]) by CRSMSX152.amr.corp.intel.com ([169.254.5.81]) with mapi id 14.03.0415.000; Wed, 30 Jan 2019 12:01:33 -0600 From: "Weiny, Ira" To: 'Jason Gunthorpe' CC: Davidlohr Bueso , "akpm@linux-foundation.org" , "dledford@redhat.com" , "jack@suse.de" , "linux-rdma@vger.kernel.org" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "Dalessandro, Dennis" , "Marciniszyn, Mike" , Davidlohr Bueso Subject: RE: [PATCH 3/6] drivers/IB,qib: do not use mmap_sem Thread-Topic: [PATCH 3/6] drivers/IB,qib: do not use mmap_sem Thread-Index: AQHUt2Gl37+5b+zRw0atYrNw3MHiB6XGEOqAgABlsYCAANFCgP//rILg Date: Wed, 30 Jan 2019 18:01:33 +0000 Message-ID: <2807E5FD2F6FDA4886F6618EAC48510E79BA6A27@CRSMSX101.amr.corp.intel.com> References: <20190121174220.10583-1-dave@stgolabs.net> <20190121174220.10583-4-dave@stgolabs.net> <20190128233140.GA12530@ziepe.ca> <20190129044607.GL25106@ziepe.ca> <20190129185005.GC10129@iweiny-DESK2.sc.intel.com> <20190129231903.GA5352@ziepe.ca> In-Reply-To: <20190129231903.GA5352@ziepe.ca> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiMWIyZWE0MzUtMzA2OS00NmE5LTkyMDgtODAwZDFjNTRiZGMxIiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX05UIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE3LjEwLjE4MDQuNDkiLCJUcnVzdGVkTGFiZWxIYXNoIjoicmRSckVBakdiVzVYZ2k5Y3JFVCtETWc1Z2M4QWp1TFhLaVwvTmNnaXhjNXVYSW1hcGcrS0hDK2JGRFdYb2JpZVcifQ== x-ctpclassification: CTP_NT dlp-product: dlpe-windows dlp-version: 11.0.400.15 dlp-reaction: no-action x-originating-ip: [172.18.205.10] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > > On Tue, Jan 29, 2019 at 10:50:05AM -0800, Ira Weiny wrote: > > > .. and I'm looking at some of the other conversions here.. *most > > > likely* any caller that is manipulating rlimit for get_user_pages > > > should really be calling get_user_pages_longterm, so they should not > > > be converted to use _fast? > > > > Is this a question? I'm not sure I understand the meaning here? > > More an invitation to disprove the statement Generally I agree. But would be best if we could get fast GUP for performance. I have not worked out if that will be possible with the final "longterm" solutions. IRa > > Jason