From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-f200.google.com (mail-pg1-f200.google.com [209.85.215.200]) by kanga.kvack.org (Postfix) with ESMTP id 068A36B000A for ; Fri, 5 Oct 2018 02:25:28 -0400 (EDT) Received: by mail-pg1-f200.google.com with SMTP id h37-v6so6054697pgh.4 for ; Thu, 04 Oct 2018 23:25:27 -0700 (PDT) Received: from bombadil.infradead.org (bombadil.infradead.org. [2607:7c80:54:e::133]) by mx.google.com with ESMTPS id a6-v6si6913128pgw.391.2018.10.04.23.25.26 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 04 Oct 2018 23:25:26 -0700 (PDT) Date: Thu, 4 Oct 2018 23:25:24 -0700 From: Christoph Hellwig Subject: Re: Problems with VM_MIXEDMAP removal from /proc//smaps Message-ID: <20181005062524.GA30582@infradead.org> References: <20181002100531.GC4135@quack2.suse.cz> <20181002121039.GA3274@linux-x5ow.site> <20181002142010.GB4963@linux-x5ow.site> <20181002144547.GA26735@infradead.org> <20181002150123.GD4963@linux-x5ow.site> <20181002150634.GA22209@infradead.org> <20181004100949.GF6682@linux-x5ow.site> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181004100949.GF6682@linux-x5ow.site> Sender: owner-linux-mm@kvack.org List-ID: To: Johannes Thumshirn Cc: Christoph Hellwig , Jan Kara , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-nvdimm@lists.01.org, mhocko@suse.cz, Dan Williams On Thu, Oct 04, 2018 at 12:09:49PM +0200, Johannes Thumshirn wrote: > On Tue, Oct 02, 2018 at 08:06:34AM -0700, Christoph Hellwig wrote: > > There is no promise, sorry. > > Well there have been lot's of articles on for instance lwn.net [1] [2] > [3] describing how to avoid the "overhead" of the page cache when > running on persistent memory. Since when is an article on some website a promise (of what exactly) by linux kernel developers?