From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0B940C2BB48 for ; Tue, 15 Dec 2020 23:10:41 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 898A322D02 for ; Tue, 15 Dec 2020 23:10:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 898A322D02 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=fromorbit.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 41194100EF26A; Tue, 15 Dec 2020 15:10:40 -0800 (PST) Received-SPF: Pass (helo) identity=helo; client-ip=211.29.132.249; helo=mail105.syd.optusnet.com.au; envelope-from=david@fromorbit.com; receiver= Received: from mail105.syd.optusnet.com.au (mail105.syd.optusnet.com.au [211.29.132.249]) by ml01.01.org (Postfix) with ESMTP id 5B335100EF264 for ; Tue, 15 Dec 2020 15:10:37 -0800 (PST) Received: from dread.disaster.area (pa49-179-6-140.pa.nsw.optusnet.com.au [49.179.6.140]) by mail105.syd.optusnet.com.au (Postfix) with ESMTPS id 1941F3C3F8B; Wed, 16 Dec 2020 10:10:29 +1100 (AEDT) Received: from dave by dread.disaster.area with local (Exim 4.92.3) (envelope-from ) id 1kpJSY-004N5L-QJ; Wed, 16 Dec 2020 10:10:22 +1100 Date: Wed, 16 Dec 2020 10:10:22 +1100 From: Dave Chinner To: Jane Chu Subject: Re: [RFC PATCH v2 0/6] fsdax: introduce fs query to support reflink Message-ID: <20201215231022.GL632069@dread.disaster.area> References: <20201123004116.2453-1-ruansy.fnst@cn.fujitsu.com> <89ab4ec4-e4f0-7c17-6982-4f55bb40f574@oracle.com> <3b35604c-57e2-8cb5-da69-53508c998540@oracle.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <3b35604c-57e2-8cb5-da69-53508c998540@oracle.com> X-Optus-CM-Score: 0 X-Optus-CM-Analysis: v=2.3 cv=YKPhNiOx c=1 sm=1 tr=0 cx=a_idp_d a=uDU3YIYVKEaHT0eX+MXYOQ==:117 a=uDU3YIYVKEaHT0eX+MXYOQ==:17 a=IkcTkHD0fZMA:10 a=zTNgK-yGK50A:10 a=7-415B0cAAAA:8 a=1WtExyGbPUdzLH7rxhUA:9 a=QEXdDO2ut3YA:10 a=biEYGPWJfzWAr4FL6Ov7:22 Message-ID-Hash: 34J5MQMRELT47Q2BNBMUEGX4BMDQGJQD X-Message-ID-Hash: 34J5MQMRELT47Q2BNBMUEGX4BMDQGJQD X-MailFrom: david@fromorbit.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-nvdimm@lists.01.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-raid@vger.kernel.org, darrick.wong@oracle.com, hch@lst.de, song@kernel.org, rgoldwyn@suse.de, qi.fuli@fujitsu.com, y-goto@fujitsu.com X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 T24gVHVlLCBEZWMgMTUsIDIwMjAgYXQgMTE6MDU6MDdBTSAtMDgwMCwgSmFuZSBDaHUgd3JvdGU6 DQo+IE9uIDEyLzE1LzIwMjAgMzo1OCBBTSwgUnVhbiBTaGl5YW5nIHdyb3RlOg0KPiA+IEhpIEph bmUNCj4gPiANCj4gPiBPbiAyMDIwLzEyLzE1IOS4iuWNiDQ6NTgsIEphbmUgQ2h1IHdyb3RlOg0K PiA+ID4gSGksIFNoaXlhbmcsDQo+ID4gPiANCj4gPiA+IE9uIDExLzIyLzIwMjAgNDo0MSBQTSwg U2hpeWFuZyBSdWFuIHdyb3RlOg0KPiA+ID4gPiBUaGlzIHBhdGNoc2V0IGlzIGEgdHJ5IHRvIHJl c29sdmUgdGhlIHByb2JsZW0gb2YgdHJhY2tpbmcgc2hhcmVkIHBhZ2UNCj4gPiA+ID4gZm9yIGZz ZGF4Lg0KPiA+ID4gPiANCj4gPiA+ID4gQ2hhbmdlIGZyb20gdjE6DQo+ID4gPiA+IMKgwqAgLSBJ bnRvcmR1Y2UgLT5ibG9ja19sb3N0KCkgZm9yIGJsb2NrIGRldmljZQ0KPiA+ID4gPiDCoMKgIC0g U3VwcG9ydCBtYXBwZWQgZGV2aWNlDQo+ID4gPiA+IMKgwqAgLSBBZGQgJ25vdCBhdmFpbGFibGUn IHdhcm5pbmcgZm9yIHJlYWx0aW1lIGRldmljZSBpbiBYRlMNCj4gPiA+ID4gwqDCoCAtIFJlYmFz ZWQgdG8gdjUuMTAtcmMxDQo+ID4gPiA+IA0KPiA+ID4gPiBUaGlzIHBhdGNoc2V0IG1vdmVzIG93 bmVyIHRyYWNraW5nIGZyb20gZGF4X2Fzc29jYWl0ZV9lbnRyeSgpIHRvIHBtZW0NCj4gPiA+ID4g ZGV2aWNlLCBieSBpbnRyb2R1Y2luZyBhbiBpbnRlcmZhY2UgLT5tZW1vcnlfZmFpbHVyZSgpIG9m IHN0cnVjdA0KPiA+ID4gPiBwYWdlbWFwLsKgIFRoZSBpbnRlcmZhY2UgaXMgY2FsbGVkIGJ5IG1l bW9yeV9mYWlsdXJlKCkgaW4gbW0sIGFuZA0KPiA+ID4gPiBpbXBsZW1lbnRlZCBieSBwbWVtIGRl dmljZS7CoCBUaGVuIHBtZW0gZGV2aWNlIGNhbGxzIGl0cyAtPmJsb2NrX2xvc3QoKQ0KPiA+ID4g PiB0byBmaW5kIHRoZSBmaWxlc3lzdGVtIHdoaWNoIHRoZSBkYW1hZ2VkIHBhZ2UgbG9jYXRlZCBp biwgYW5kIGNhbGwNCj4gPiA+ID4gLT5zdG9yYWdlX2xvc3QoKSB0byB0cmFjayBmaWxlcyBvciBt ZXRhZGF0YSBhc3NvY2FpdGVkIHdpdGggdGhpcyBwYWdlLg0KPiA+ID4gPiBGaW5hbGx5IHdlIGFy ZSBhYmxlIHRvIHRyeSB0byBmaXggdGhlIGRhbWFnZWQgZGF0YSBpbiBmaWxlc3lzdGVtIGFuZCBk bw0KPiA+ID4gDQo+ID4gPiBEb2VzIHRoYXQgbWVhbiBjbGVhcmluZyBwb2lzb24/IGlmIHNvLCB3 b3VsZCB5b3UgbWluZCB0byBlbGFib3JhdGUNCj4gPiA+IHNwZWNpZmljYWxseSB3aGljaCBjaGFu Z2UgZG9lcyB0aGF0Pw0KPiA+IA0KPiA+IFJlY292ZXJpbmcgZGF0YSBmb3IgZmlsZXN5c3RlbSAo b3IgcG1lbSBkZXZpY2UpIGhhcyBub3QgYmVlbiBkb25lIGluDQo+ID4gdGhpcyBwYXRjaHNldC4u LsKgIEkganVzdCB0cmlnZ2VyZWQgdGhlIGhhbmRsZXIgZm9yIHRoZSBmaWxlcyBzaGFyaW5nIHRo ZQ0KPiA+IGNvcnJ1cHRlZCBwYWdlIGhlcmUuDQo+IA0KPiBUaGFua3MhIFRoYXQgY29uZmlybXMg bXkgdW5kZXJzdGFuZGluZy4NCj4gDQo+IFdpdGggdGhlIGZyYW1ld29yayBwcm92aWRlZCBieSB0 aGUgcGF0Y2hzZXQsIGhvdyBkbyB5b3UgZW52aXNpb24gaXQgdG8NCj4gZWFzZS9zaW1wbGlmeSBw b2lzb24gcmVjb3ZlcnkgZnJvbSB0aGUgdXNlcidzIHBlcnNwZWN0aXZlPw0KDQpBdCB0aGUgbW9t ZW50LCBJJ2Qgc2F5IG5vIGNoYW5nZSB3aGF0LXNvLWV2ZXIuIFRIZSBiZWhhdmlvdXIgaXMNCm5l Y2Vzc2FyeSBzbyB0aGF0IHdlIGNhbiBraWxsIHdoYXRldmVyIHVzZXIgYXBwbGljYXRpb24gbWFw cw0KbXVsdGlwbHktc2hhcmVkIHBoeXNpY2FsIGJsb2NrcyBpZiB0aGVyZSdzIGEgbWVtb3J5IGVy cm9yLiBUSGUNCnJlY292ZXJ5IG1ldGhvZCBmcm9tIHRoYXQgaXMgdW5jaGFuZ2VkLiBUaGUgb25s eSBhZHZhbnRhZ2UgbWF5IGJlDQp0aGF0IHRoZSBmaWxlc3lzdGVtIChpZiBybWFwIGVuYWJsZWQp IGNhbiB0ZWxsIHlvdSB0aGUgZXhhY3QgZmlsZQ0KYW5kIG9mZnNldCBpbnRvIHRoZSBmaWxlIHdo ZXJlIGRhdGEgd2FzIGNvcnJ1cHRlZC4NCg0KSG93ZXZlciwgaXQgY2FuIGJlIHdvcnNlLCB0b286 IGl0IG1heSBhbHNvIG5vdyBjb21wbGV0ZWx5IHNodXQgZG93bg0KdGhlIGZpbGVzeXN0ZW0gaWYg dGhlIGZpbGVzeXN0ZW0gZGlzY292ZXJzIHRoZSBlcnJvciBpcyBpbiBtZXRhZGF0YQ0KcmF0aGVy IHRoYW4gdXNlciBkYXRhLiBUaGF0J3MgbXVjaCBtb3JlIGNvbXBsZXggdG8gcmVjb3ZlciBmcm9t LCBhbmQNCnJpZ2h0IG5vdyB3aWxsIHJlcXVpcmUgZG93bnRpbWUgdG8gdGFrZSB0aGUgZmlsZXN5 c3RlbSBvZmZsaW5lIGFuZA0KcnVuIGZzY2sgdG8gY29ycmVjdCB0aGUgZXJyb3IuIFRoYXQgbWF5 IHRyYXNoIHdoYXRldmVyIHRoZSBtZXRhZGF0YQ0KdGhhdCBjYW4ndCBiZSByZWNvdmVyZWQgcG9p bnRzIHRvLCBzbyB5b3Ugc3RpbGwgaGF2ZSBhIHVlc3IgZGF0YQ0KcmVjb3ZlcnkgcHJvY2VzcyB0 byBwZXJmb3JtIGFmdGVyIHRoaXMuLi4NCg0KPiBBbmQgaG93IGRvZXMgaXQgaGVscCBpbiBkZWFs aW5nIHdpdGggcGFnZSBmYXVsdHMgdXBvbiBwb2lzb25lZA0KPiBkYXggcGFnZT8NCg0KSXQgZG9l c24ndC4gSWYgdGhlIHBhZ2UgaXMgcG9pc29uZWQsIHRoZSBzYW1lIGJlaGF2aW91ciB3aWxsIG9j Y3VyDQphcyBkb2VzIG5vdy4gVGhpcyBpcyBzaW1wbHkgZXJyb3IgcmVwb3J0aW5nIGluZnJhc3Ry dWN0dXJlLCBub3QNCmVycm9yIGhhbmRsaW5nLg0KDQpGdXR1cmUgd29yayBtaWdodCBjaGFuZ2Ug aG93IHdlIGNvcnJlY3QgdGhlIGZhdWx0cyBmb3VuZCBpbiB0aGUNCnN0b3JhZ2UsIGJ1dCBJIHRo aW5rIHRoZSB1c2VyIHZpc2libGUgYmVoYXZpb3VyIGlzIGdvaW5nIHRvIGJlICJraWxsDQphcHBz IG1hcHBpbmcgY29ycnVwdGVkIGRhdGEiIGZvciBhIGxvbmcgdGltZSB5ZXQuLi4uDQoNCkNoZWVy cywNCg0KRGF2ZS4NCi0tIA0KRGF2ZSBDaGlubmVyDQpkYXZpZEBmcm9tb3JiaXQuY29tCl9fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkxpbnV4LW52ZGltbSBt YWlsaW5nIGxpc3QgLS0gbGludXgtbnZkaW1tQGxpc3RzLjAxLm9yZwpUbyB1bnN1YnNjcmliZSBz ZW5kIGFuIGVtYWlsIHRvIGxpbnV4LW52ZGltbS1sZWF2ZUBsaXN0cy4wMS5vcmcK