From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f199.google.com (mail-pf0-f199.google.com [209.85.192.199]) by kanga.kvack.org (Postfix) with ESMTP id 0C3E96B0069 for ; Sat, 10 Sep 2016 03:42:34 -0400 (EDT) Received: by mail-pf0-f199.google.com with SMTP id g202so236039640pfb.3 for ; Sat, 10 Sep 2016 00:42:34 -0700 (PDT) Received: from bombadil.infradead.org (bombadil.infradead.org. [2001:1868:205::9]) by mx.google.com with ESMTPS id r2si6451692pfj.57.2016.09.10.00.42.31 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 10 Sep 2016 00:42:33 -0700 (PDT) Date: Sat, 10 Sep 2016 00:42:28 -0700 From: Christoph Hellwig Subject: Re: [PATCH v2 2/9] ext2: tell DAX the size of allocation holes Message-ID: <20160910074228.GA23749@infradead.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> <20160910073012.GA5295@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: Matthew Wilcox Cc: Christoph Hellwig , Ross Zwisler , Theodore Ts'o , "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 07:33:18AM +0000, Matthew Wilcox wrote: > > caller specific is unaceptable. That being said your idea doesn't sounds > > unreasonable, but will require a bit more work and has no real short-term > > need. > > So your proposal is to remove buffer_heads from ext2? No, the proposal is to remove buffer_heads from XFS first, then GFS2 and then maybe others like ext4. I'd like to remove buffer_heads from the DAX path for ext2 and ext4 entitrely for sure (and direct I/O next). -- 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