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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 1BB9FC5DF61 for ; Fri, 8 Nov 2019 02:07:54 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id EB29421D79 for ; Fri, 8 Nov 2019 02:07:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EB29421D79 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=stgolabs.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 8A85C6B0008; Thu, 7 Nov 2019 21:07:53 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 80A016B000A; Thu, 7 Nov 2019 21:07:53 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6F9D86B000C; Thu, 7 Nov 2019 21:07:53 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0006.hostedemail.com [216.40.44.6]) by kanga.kvack.org (Postfix) with ESMTP id 551CA6B0008 for ; Thu, 7 Nov 2019 21:07:53 -0500 (EST) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id 2F64E181AEF0B for ; Fri, 8 Nov 2019 02:07:53 +0000 (UTC) X-FDA: 76131474426.22.story81_7f00965c12003 X-HE-Tag: story81_7f00965c12003 X-Filterd-Recvd-Size: 1729 Received: from mx1.suse.de (mx2.suse.de [195.135.220.15]) by imf34.hostedemail.com (Postfix) with ESMTP for ; Fri, 8 Nov 2019 02:07:52 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 572CAAF35; Fri, 8 Nov 2019 02:07:50 +0000 (UTC) Date: Thu, 7 Nov 2019 18:03:37 -0800 From: Davidlohr Bueso To: Waiman Long Cc: Mike Kravetz , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Peter Zijlstra , Ingo Molnar , Will Deacon , Matthew Wilcox Subject: Re: [PATCH v2] hugetlbfs: Take read_lock on i_mmap for PMD sharing Message-ID: <20191108020337.pyf3ry3zsioh2ghz@linux-p48b> Mail-Followup-To: Waiman Long , Mike Kravetz , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Peter Zijlstra , Ingo Molnar , Will Deacon , Matthew Wilcox References: <20191107211809.9539-1-longman@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20191107211809.9539-1-longman@redhat.com> User-Agent: NeoMutt/20180716 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000002, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, 07 Nov 2019, Waiman Long wrote: >With this patch applied, the customer is seeing significant performance >improvement over the unpatched kernel. Could you give more details here? Thanks, Davidlohr