Return-Path: Received: from bombadil.infradead.org ([198.137.202.133]:53382 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726118AbeJBVfz (ORCPT ); Tue, 2 Oct 2018 17:35:55 -0400 Date: Tue, 2 Oct 2018 07:52:06 -0700 From: Christoph Hellwig To: Johannes Thumshirn Cc: Christoph Hellwig , Jan Kara , Dan Williams , Dave Jiang , linux-nvdimm@lists.01.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-api@vger.kernel.org Subject: Re: Problems with VM_MIXEDMAP removal from /proc//smaps Message-ID: <20181002145206.GA10903@infradead.org> References: <20181002100531.GC4135@quack2.suse.cz> <20181002121039.GA3274@linux-x5ow.site> <20181002142959.GD9127@quack2.suse.cz> <20181002143713.GA19845@infradead.org> <20181002144412.GC4963@linux-x5ow.site> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181002144412.GC4963@linux-x5ow.site> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Tue, Oct 02, 2018 at 04:44:13PM +0200, Johannes Thumshirn wrote: > On Tue, Oct 02, 2018 at 07:37:13AM -0700, Christoph Hellwig wrote: > > No, it should not. DAX is an implementation detail thay may change > > or go away at any time. > > Well we had an issue with an application checking for dax, this is how > we landed here in the first place. So what exacty is that "DAX" they are querying about (and no, I'm not joking, nor being philosophical).