From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-f197.google.com (mail-pf1-f197.google.com [209.85.210.197]) by kanga.kvack.org (Postfix) with ESMTP id C04B88E0001 for ; Tue, 11 Sep 2018 17:16:51 -0400 (EDT) Received: by mail-pf1-f197.google.com with SMTP id a23-v6so13326840pfo.23 for ; Tue, 11 Sep 2018 14:16:51 -0700 (PDT) Received: from bombadil.infradead.org (bombadil.infradead.org. [2607:7c80:54:e::133]) by mx.google.com with ESMTPS id 16-v6si22171448pgy.641.2018.09.11.14.16.50 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 11 Sep 2018 14:16:50 -0700 (PDT) Date: Tue, 11 Sep 2018 14:16:45 -0700 From: Matthew Wilcox Subject: Re: [RFC v9 PATCH 2/4] mm: mmap: zap pages with read mmap_sem in munmap Message-ID: <20180911211645.GA12159@bombadil.infradead.org> References: <1536699493-69195-1-git-send-email-yang.shi@linux.alibaba.com> <1536699493-69195-3-git-send-email-yang.shi@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1536699493-69195-3-git-send-email-yang.shi@linux.alibaba.com> Sender: owner-linux-mm@kvack.org List-ID: To: Yang Shi Cc: mhocko@kernel.org, ldufour@linux.vnet.ibm.com, vbabka@suse.cz, akpm@linux-foundation.org, dave.hansen@intel.com, oleg@redhat.com, srikar@linux.vnet.ibm.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org On Wed, Sep 12, 2018 at 04:58:11AM +0800, Yang Shi wrote: > mm/mmap.c | 97 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-- I really think you're going about this the wrong way by duplicating vm_munmap().