From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755477AbaI3JpQ (ORCPT ); Tue, 30 Sep 2014 05:45:16 -0400 Received: from omr1.cc.vt.edu ([198.82.141.52]:36583 "EHLO omr1.cc.vt.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751170AbaI3JpN (ORCPT ); Tue, 30 Sep 2014 05:45:13 -0400 X-Mailer: exmh version 2.8.0 04/21/2012 with nmh-1.6+dev To: Matthew Wilcox Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Matthew Wilcox Subject: Re: [PATCH v11 00/21] Add support for NV-DIMMs to ext4 In-Reply-To: Your message of "Thu, 25 Sep 2014 16:33:17 -0400." <1411677218-29146-1-git-send-email-matthew.r.wilcox@intel.com> From: Valdis.Kletnieks@vt.edu References: <1411677218-29146-1-git-send-email-matthew.r.wilcox@intel.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1412070301_2231P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Tue, 30 Sep 2014 05:45:01 -0400 Message-ID: <15705.1412070301@turing-police.cc.vt.edu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --==_Exmh_1412070301_2231P Content-Type: text/plain; charset=us-ascii On Thu, 25 Sep 2014 16:33:17 -0400, Matthew Wilcox said: > Patch 19 adds some DAX infrastructure to support ext4. > > Patch 20 adds DAX support to ext4. It is broadly similar to ext2's DAX > support, but it is more efficient than ext4's due to its support for > unwritten extents. I don't currently have a use case for NV-DIMM support. However, it would be nice if this code could be leveraged to support 'force O_DIRECT on all I/O to this file' - that I *do* have a use case for. Patch 20 looks to my untrained eye like it *almost* gets there. (And if in fact it *does* do the whole enchilada, the Changelog etc should mention it :) --==_Exmh_1412070301_2231P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Exmh version 2.5 07/13/2001 iQIVAwUBVCp7nQdmEQWDXROgAQLv+Q/+MJrrdItGQo9RwAqKyVmn7uJA2UWWmBJ2 8otETBMl0IQHv+JHbQTUynXMD6AgKpBrAjkW56dTVc5XhnHIwR7ZzYfriYmp6jpe TdNb3iYP1zpKbixfHSCIhmacmJEk9tNYJdSTH1RKagFGM7DRA3LaG5A3PvEr/RGZ NpMgADZDUA3AbDT0CQkBVGJ5Y6osPAVq/fD6S0vyvUsmLAVsrtpYMPsJXXh6NaNw 5qoFjnBNkopPVIDY0vqcqJgNUC0bVRtgkrxhiwDnhzxVdz+qOAri8GbiHkKzAhB+ iXIbxUl+IH+BVAgmrMZPJA3MDr4U1bCj+dfNlfYI+Mgubm1hzSQEf4re9wcVjWiG lyV2NpxhQHkV1P+nw0gVvGd8e5qOWd2WLMdqo4UOGeUSYukhlR4BrkUs8FVt/4Jh a/nWascldQ4Lap270vrHRN8oKp9VRz8WoIqzugOg3Nuhtplg6bol5p6y3HnaCUFI dclwFW3OT0dDWODZFzXdOZQfCDoEbDwP0Zbk6C42XriNgm7cHEv4Mr06aahC81zo /oCZAosXBy61k13hKxRbDR4AHen1oEW/rKNlzhviOCbiIfk2eIrpwgSWtaKRyU5b nAvNr0JrjjmNG+K3AftGxa5wPl+cU1lSYM2gKYiawTH5210CbwfCSQ6j+1q4l2ch EMrC7MqtG0o= =q9v8 -----END PGP SIGNATURE----- --==_Exmh_1412070301_2231P--