From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lukas Czerner Subject: Re: [PATCH] ext4: introduce per-inode DAX flag Date: Wed, 30 Aug 2017 17:30:48 +0200 Message-ID: <20170830153048.pslde7hv5rp5zibw@rh_laptop> References: <20170825151445.ycf5xomoxvebgaez@thunk.org> <20170825154032.GA1827@infradead.org> <20170825233358.GC17782@dastard> <20170828073853.GA23262@infradead.org> <20170828101014.GD17782@dastard> <20170829154922.GA24592@quack2.suse.cz> <20170829225717.GG10621@dastard> <20170830100059.GC28354@quack2.suse.cz> <20170830123450.GA14976@infradead.org> <20170830150019.cwrnum6zmrieqhdp@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Christoph Hellwig , Jan Kara , Dave Chinner , linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org To: Theodore Ts'o Return-path: Received: from mx1.redhat.com ([209.132.183.28]:42098 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751463AbdH3Paw (ORCPT ); Wed, 30 Aug 2017 11:30:52 -0400 Content-Disposition: inline In-Reply-To: <20170830150019.cwrnum6zmrieqhdp@thunk.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Wed, Aug 30, 2017 at 11:00:19AM -0400, Theodore Ts'o wrote: > Bringing this discussion back to the "ext4: introduce per-inode DAX > flag" patch, it sounds to me that I should _not_ apply this patch > until we figure out to fix this for reals. Does this sound fair? > > If we think it's completely unfixable, then maybe XFS should consider > (temporarily) withdrawing the per-file DAX support before there is a > userspace and you have to support it forever, but that's between the > NVM/dax and XFS folks to figure out. > > - Ted Hi Ted, I agree, this still has some issues even for ext4. Let's see what we can do about that and I'll revisit it later. Thanks! -Lukas