From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from g9t1613g.houston.hpe.com ([15.241.32.99]:52710 "EHLO g9t1613g.houston.hpe.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965270AbeALXPD (ORCPT ); Fri, 12 Jan 2018 18:15:03 -0500 Received: from g9t5008.houston.hpe.com (g9t5008.houston.hpe.com [15.241.48.72]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by g9t1613g.houston.hpe.com (Postfix) with ESMTPS id 47BAC6210B for ; Fri, 12 Jan 2018 23:15:03 +0000 (UTC) From: "Kani, Toshi" To: "david@fromorbit.com" CC: "ross.zwisler@linux.intel.com" , "linux-nvdimm@lists.01.org" , "linux-fsdevel@vger.kernel.org" Subject: Re: DAX 2MB mappings for XFS Date: Fri, 12 Jan 2018 23:15:00 +0000 Message-ID: <1515801655.16384.57.camel@hpe.com> References: <1515788779.16384.29.camel@hpe.com> <20180112211915.GF27323@dastard> <1515795857.16384.34.camel@hpe.com> <20180112222750.GG27323@dastard> In-Reply-To: <20180112222750.GG27323@dastard> Content-Language: en-US Content-Type: text/plain; charset="utf-8" Content-ID: <031583E0F3E3064392BA05DE9C21BA3A@NAMPRD84.PROD.OUTLOOK.COM> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-fsdevel-owner@vger.kernel.org List-ID: T24gU2F0LCAyMDE4LTAxLTEzIGF0IDA5OjI3ICsxMTAwLCBEYXZlIENoaW5uZXIgd3JvdGU6DQo+ IE9uIEZyaSwgSmFuIDEyLCAyMDE4IGF0IDA5OjM4OjIyUE0gKzAwMDAsIEthbmksIFRvc2hpIHdy b3RlOg0KPiA+IE9uIFNhdCwgMjAxOC0wMS0xMyBhdCAwODoxOSArMTEwMCwgRGF2ZSBDaGlubmVy IHdyb3RlOg0KPiA+ICA6DQo+ID4gPiBJT1dzLCB3aGF0IHlvdSBhcmUgc2VlaW5nIGlzIHRyeWlu ZyB0byBkbyBhIHZlcnkgbGFyZ2UgYWxsb2NhdGlvbiBvbg0KPiA+ID4gYSB2ZXJ5IHNtYWxsICg4 R0IpIFhGUyBmaWxlc3lzdGVtLiAgSXQncyByYXJlIHNvbWVvbmUgYXNrcyB0bw0KPiA+ID4gYWxs b2NhdGUgPjI1JSBvZiB0aGUgZmlsZXN5c3RlbSBzcGFjZSBpbiBvbmUgYWxsb2NhdGlvbiwgc28g aXQncyBub3QNCj4gPiA+IHN1cnByaXNpbmcgaXQgdHJpZ2dlcnMgRU5PU1BDLWxpa2UgYWxnb3Jp dGhtcyBiZWNhdXNlIGl0IGRvZXNuJ3QgZml0DQo+ID4gPiBpbnRvIGEgc2luZ2xlIEFHLi4uLg0K PiA+ID4gDQo+ID4gPiBXZSBjYW4gcHJvYmFibHkgbG9vayB0byBvcHRpbWlzZSB0aGlzLCBidXQg SSdtIG5vdCBzdXJlIGlmIHdlIGNhbg0KPiA+ID4gZWFzaWx5IGRpZmZlcmVudGlhdGUgdGhpcyBj YXNlIChpLmUuIGFsbG9jYXRpb24gcmVxdWVzdCBsYXJnZXIgdGhhbg0KPiA+ID4gY29udGluZ3Vv dXMgZnJlZSBzcGFjZSkgZnJvbSB0aGUgc2FtZSBzaXR1YXRpb24gbmVhciBFTk9TUEMgd2hlbiB3 ZQ0KPiA+ID4gcmVhbGx5IGRvIGhhdmUgdG8gdHJpbSB0byBmaXQuLi4NCj4gPiA+IA0KPiA+ID4g UmVtZW1iZXI6IHN0cmlwZSB1bml0IGFsbG9jYXRpb24gYWxpZ25tZW50IGlzIGEgaGludCBpbiBY RlMgdGhhdCB3ZQ0KPiA+ID4gY2FuIGFuZCBkbyBpZ25vcmUgd2hlbiBuZWNlc3NhcnkgLSBpdCdz IG5vdCBhIGJpbmRpbmcgcnVsZS4NCj4gPiANCj4gPiBUaGFua3MgZm9yIHRoZSBjbGFyaWZpY2F0 aW9uISAgQ2FuIFhGUyBhbGxvY2F0ZSBzbWFsbGVyIGV4dGVudHMgc28gdGhhdA0KPiA+IGVhY2gg ZXh0ZW50IHdpbGwgZml0IHRvIGFuIEFHPw0KPiANCj4gSSd2ZSBhbHJlYWR5IGFuc3dlcmVkIHRo YXQgcXVlc3Rpb246DQo+IA0KPiAJSSdtIG5vdCBzdXJlIGlmIHdlIGNhbiBlYXNpbHkgZGlmZmVy ZW50aWF0ZSB0aGlzIGNhc2UgKGkuZS4NCj4gCWFsbG9jYXRpb24gcmVxdWVzdCBsYXJnZXIgdGhh biBjb250aW5ndW91cyBmcmVlIHNwYWNlKSBmcm9tDQo+IAl0aGUgc2FtZSBzaXR1YXRpb24gbmVh ciBFTk9TUEMgd2hlbiB3ZSByZWFsbHkgZG8gaGF2ZSB0bw0KPiAJdHJpbSB0byBmaXQuLi4NCg0K UmlnaHQuICBJIHdhcyB0aGlua2luZyB0byBsaW1pdCB0aGUgZXh0ZW50IHNpemUgKGkuZS4gYSBo YWxmIG9yIHF1YXJ0ZXINCm9mIEFHIHNpemUpIHJlZ2FyZGxlc3Mgb2YgdGhlIEVOT1NQQyBjb25k aXRpb24sIGJ1dCBpdCBtYXkgYmUgdGhlIHNhbWUNCnRoaW5nLg0KDQo+ID4gZXh0NCBjcmVhdGVz IG11bHRpcGxlIHNtYWxsZXIgZXh0ZW50cyBmb3IgdGhlIHNhbWUgcmVxdWVzdC4NCj4gDQo+IFll cywgYmVjYXVzZSBpdCBoYXMgbXVjaCwgbXVjaCBzbWFsbGVyIGJsb2NrIGdyb3VwcyBzbyAiYWxs b2NhdGlvbiA+DQo+IG1heCBleHRlbnQgc2l6ZSAoMTI4TUIpIiBpcyBhIGNvbW1vbiBwYXRoLg0K PiANCj4gSXQncyBub3QgYSBjb21tb24gcGF0aCBvbiBYRlMgLSBmaWxlc3lzdGVtcyAoYW5kIGhl bmNlIEFHcykgYXJlDQo+IHR5cGljYWxseSBvcmRlcnMgb2YgbWFnbml0dWRlIGxhcmdlciB0aGFu IHRoZSBtYXhpbXVtIGV4dGVudCBzaXplDQo+ICg4R0IpIHNvIHRoZSBwcm9ibGVtIG9ubHkgc2hv d3MgdXAgd2hlbiB3ZSdyZSBuZWFyIEVOT1NQQy4gWEZTIGlzDQo+IHJlYWxseSBub3Qgb3B0aW1p c2VkIGZvciB0aW55IGZpbGVzeXN0ZW1zLCBhbmQgd2hlbiBpdCBjb21lcyB0byBwbWVtDQo+IHdl IHdlcmUgbGVhZCB0byBiZWxlaXZlIHdlJ2QgaGF2ZSBtdXRsaXBsZSB0ZXJhYnl0ZXMgb2YgcG1l bSBpbg0KPiBzeXN0ZW1zIGJ5IG5vdywgbm90IHN0aWxsIGJlIHN0dWNrIHdpdGggOEdCIE5WRElN TVMuIEhlbmNlIHdlJ3ZlDQo+IHNwZW50IHZlcnkgbGl0dGxlIHRpbWUgd29ycnlpbmcgYWJvdXQg c3VjaCBpc3N1ZXMgYmVjYXVzZSB3ZQ0KPiB3ZXJlbid0IGFpbWluZyB0byBzdXBwb3J0IHN1Y2gg c21hbGwgY2FwY2l0aWVzIGZvciB2ZXJ5IGxvbmcuLi4NCg0KSSBzZWUuICBZZXMsIHRoZXJlIHdp bGwgYmUgbXVsdGlwbGUgdGVyYWJ5dGVzIGNhcGFjaXR5LCBidXQgaXQgd2lsbCBhbHNvDQphbGxv dyB0byBkaXZpZGUgaXQgaW50byBtdWx0aXBsZSBzbWFsbGVyIG5hbWVzcGFjZXMuICBTbywgdXNl ciBtYXkNCmNvbnRpbnVlIHRvIGhhdmUgcmVsYXRpdmVseSBzbWFsbGVyIG5hbWVzcGFjZXMgZm9y IHRoZWlyIHVzZSBjYXNlcy4gIElmDQp1c2VyIGFsbG9jYXRlcyBhIG5hbWVzcGFjZSB0aGF0IGlz IGp1c3QgYmlnIGVub3VnaCB0byBob3N0IHNldmVyYWwNCmFjdGl2ZSBmaWxlcywgaXQgbWF5IGhp dCB0aGlzIGlzc3VlIHJlZ2FyZGxlc3Mgb2YgdGhlaXIgc2l6ZS4NCg0KVGhhbmtzLA0KLVRvc2hp DQo=