From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751470AbbCTRmt (ORCPT ); Fri, 20 Mar 2015 13:42:49 -0400 Received: from auth-3.ukservers.net ([217.10.138.152]:48548 "EHLO auth-3.ukservers.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750920AbbCTRmq (ORCPT ); Fri, 20 Mar 2015 13:42:46 -0400 X-Greylist: delayed 634 seconds by postgrey-1.27 at vger.kernel.org; Fri, 20 Mar 2015 13:42:46 EDT Message-ID: <550C5993.9030104@youngman.org.uk> Date: Fri, 20 Mar 2015 17:32:03 +0000 From: Wols Lists User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: Andrew Morton , Boaz Harrosh CC: Matthew Wilcox , linux-arch@vger.kernel.org, axboe@kernel.dk, riel@redhat.com, hch@infradead.org, linux-nvdimm@ml01.01.org, Dave Hansen , linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, mgorman@suse.de, linux-fsdevel@vger.kernel.org Subject: Re: [Linux-nvdimm] [RFC PATCH 0/7] evacuate struct page from the block layer References: <20150316201640.33102.33761.stgit@dwillia2-desk3.amr.corp.intel.com> <20150318132650.3336261c58829f49a9af8675@linux-foundation.org> <20150319134313.GF4003@linux.intel.com> <550AF127.9010504@plexistor.com> <20150319125917.6cc2bf02687aab542027d8ac@linux-foundation.org> In-Reply-To: <20150319125917.6cc2bf02687aab542027d8ac@linux-foundation.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 19/03/15 19:59, Andrew Morton wrote: > This is all contingent upon the prevalence of machines which have vast > amounts of nv memory and relatively small amounts of regular memory. > How confident are we that this really is the future? Somewhat off-topic, but it's also the past. I can't help thinking of the early Pick machines, which treated backing store as one giant permanent virtual memory. Back when 300Mb hard drives were HUGE. Cheers, Wol