From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yb0-f197.google.com (mail-yb0-f197.google.com [209.85.213.197]) by kanga.kvack.org (Postfix) with ESMTP id 0CFDD6B0069 for ; Sat, 10 Sep 2016 13:51:20 -0400 (EDT) Received: by mail-yb0-f197.google.com with SMTP id t5so45004455yba.0 for ; Sat, 10 Sep 2016 10:51:20 -0700 (PDT) Received: from imap.thunk.org (imap.thunk.org. [2600:3c02::f03c:91ff:fe96:be03]) by mx.google.com with ESMTPS id o65si2550243ywb.360.2016.09.10.10.51.19 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 10 Sep 2016 10:51:19 -0700 (PDT) Date: Sat, 10 Sep 2016 13:49:10 -0400 From: Theodore Ts'o Subject: Re: [PATCH v2 2/9] ext2: tell DAX the size of allocation holes Message-ID: <20160910174910.yyirb7smiob7evt5@thunk.org> References: <20160823220419.11717-1-ross.zwisler@linux.intel.com> <20160823220419.11717-3-ross.zwisler@linux.intel.com> <20160825075728.GA11235@infradead.org> <20160826212934.GA11265@linux.intel.com> <20160829074116.GA16491@infradead.org> <20160829125741.cdnbb2uaditcmnw2@thunk.org> <20160909164808.GC18554@linux.intel.com> <20160910073151.GB5295@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160910073151.GB5295@infradead.org> Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Hellwig Cc: Dan Williams , Matthew Wilcox , Ross Zwisler , "linux-kernel@vger.kernel.org" , Andrew Morton , "linux-nvdimm@ml01.01.org" , Dave Chinner , "linux-mm@kvack.org" , Andreas Dilger , Alexander Viro , Jan Kara , "linux-fsdevel@vger.kernel.org" , "linux-ext4@vger.kernel.org" On Sat, Sep 10, 2016 at 12:31:51AM -0700, Christoph Hellwig wrote: > I've mentioned this before, but I'd like to repeat it. With all the > work reqwuired in the file system I would prefer to drop DAX support > in ext2 (and if people really cry for it reinstate the trivial old xip > support). Why is so much work required to support the new DAX interfaces in ext2? Is that unique to ext2, or is adding DAX support just going to be painful for all file systems? Hopefully it's not the latter, right? - Ted -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org