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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 893EDC83004 for ; Tue, 28 Apr 2020 11:16:39 +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 5EA96206D6 for ; Tue, 28 Apr 2020 11:16:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="BbEv0tv/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5EA96206D6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org 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 37D89110BD429; Tue, 28 Apr 2020 04:15:42 -0700 (PDT) Received-SPF: None (mailfrom) identity=mailfrom; client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=willy@infradead.org; receiver= Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 9F43F1007B7B4 for ; Tue, 28 Apr 2020 04:15:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Transfer-Encoding :Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Sender:Reply-To:Content-ID:Content-Description; bh=u2H9SL+UMErMdRB2YXU6A5uO+y4zqg8b68UfJIqKHUU=; b=BbEv0tv/tpdRIsWJ5h4Vm4N5uQ N6PimFztig63e/oRDUJ0P7VhoKLjfva0KIy4rlZjQ2OheYN1i8n/GKpj2swy49MNk/3u3jcNMaGvn ye/iybuk4S7mglrs/hNIx6WJySktdeNKwPTGx/RPP0xLx6DFnyk4a0jqJCX6BncQiuHkzfusZOPPh bMgyUGN91SR7w+nOOebqqyYc7/cJ5mH98QgOYiw1Yk0d8xv1IGMzJwM0OBwI00wIucyImvp4Lg9um NaXoPXFKBqIYa/RLoTWaGGtZWGiiOvDLiQiQZFwaJAE7rHjxktGJjWcGK1wg+u+micKtkLYptCD2i cVFpmLJw==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jTOE8-0002zk-5p; Tue, 28 Apr 2020 11:16:36 +0000 Date: Tue, 28 Apr 2020 04:16:36 -0700 From: Matthew Wilcox To: Ruan Shiyang Subject: Re: =?utf-8?B?5Zue5aSNOiBSZQ==?= =?utf-8?Q?=3A?= [RFC PATCH 0/8] dax: Add a dax-rmap tree to support reflink Message-ID: <20200428111636.GK29705@bombadil.infradead.org> References: <20200427084750.136031-1-ruansy.fnst@cn.fujitsu.com> <20200427122836.GD29705@bombadil.infradead.org> <20200428064318.GG2040@dread.disaster.area> <259fe633-e1ff-b279-cd8c-1a81eaa40941@cn.fujitsu.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <259fe633-e1ff-b279-cd8c-1a81eaa40941@cn.fujitsu.com> Message-ID-Hash: QV5BQJKDH4K26LUDDY3RM6TVYJUWXMV5 X-Message-ID-Hash: QV5BQJKDH4K26LUDDY3RM6TVYJUWXMV5 X-MailFrom: willy@infradead.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Dave Chinner , "linux-kernel@vger.kernel.org" , "linux-xfs@vger.kernel.org" , "linux-nvdimm@lists.01.org" , "linux-mm@kvack.org" , "linux-fsdevel@vger.kernel.org" , "darrick.wong@oracle.com" , "hch@lst.de" , "rgoldwyn@suse.de" , "Qi, Fuli" , "Gotou, Yasunori" 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 T24gVHVlLCBBcHIgMjgsIDIwMjAgYXQgMDU6MzI6NDFQTSArMDgwMCwgUnVhbiBTaGl5YW5nIHdy b3RlOg0KPiBPbiAyMDIwLzQvMjgg5LiL5Y2IMjo0MywgRGF2ZSBDaGlubmVyIHdyb3RlOg0KPiA+ IE9uIFR1ZSwgQXByIDI4LCAyMDIwIGF0IDA2OjA5OjQ3QU0gKzAwMDAsIFJ1YW4sIFNoaXlhbmcg d3JvdGU6DQo+ID4gPiDlnKggMjAyMC80LzI3IDIwOjI4OjM2LCAiTWF0dGhldyBXaWxjb3giIDx3 aWxseUBpbmZyYWRlYWQub3JnPiDlhpnpgZM6DQo+ID4gPiA+IE9uIE1vbiwgQXByIDI3LCAyMDIw IGF0IDA0OjQ3OjQyUE0gKzA4MDAsIFNoaXlhbmcgUnVhbiB3cm90ZToNCj4gPiA+ID4gPiAgIFRo aXMgcGF0Y2hzZXQgaXMgYSB0cnkgdG8gcmVzb2x2ZSB0aGUgc2hhcmVkICdwYWdlIGNhY2hlJyBw cm9ibGVtIGZvcg0KPiA+ID4gPiA+ICAgZnNkYXguDQo+ID4gPiA+ID4gDQo+ID4gPiA+ID4gICBJ biBvcmRlciB0byB0cmFjayBtdWx0aXBsZSBtYXBwaW5ncyBhbmQgaW5kZXhlcyBvbiBvbmUgcGFn ZSwgSQ0KPiA+ID4gPiA+ICAgaW50cm9kdWNlZCBhIGRheC1ybWFwIHJiLXRyZWUgdG8gbWFuYWdl IHRoZSByZWxhdGlvbnNoaXAuICBBIGRheCBlbnRyeQ0KPiA+ID4gPiA+ICAgd2lsbCBiZSBhc3Nv Y2lhdGVkIG1vcmUgdGhhbiBvbmNlIGlmIGlzIHNoYXJlZC4gIEF0IHRoZSBzZWNvbmQgdGltZSB3 ZQ0KPiA+ID4gPiA+ICAgYXNzb2NpYXRlIHRoaXMgZW50cnksIHdlIGNyZWF0ZSB0aGlzIHJiLXRy ZWUgYW5kIHN0b3JlIGl0cyByb290IGluDQo+ID4gPiA+ID4gICBwYWdlLT5wcml2YXRlKG5vdCB1 c2VkIGluIGZzZGF4KS4gIEluc2VydCAoLT5tYXBwaW5nLCAtPmluZGV4KSB3aGVuDQo+ID4gPiA+ ID4gICBkYXhfYXNzb2NpYXRlX2VudHJ5KCkgYW5kIGRlbGV0ZSBpdCB3aGVuIGRheF9kaXNhc3Nv Y2lhdGVfZW50cnkoKS4NCj4gPiA+ID4gDQo+ID4gPiA+IERvIHdlIHJlYWxseSB3YW50IHRvIHRy YWNrIGFsbCBvZiB0aGlzIG9uIGEgcGVyLXBhZ2UgYmFzaXM/ICBJIHdvdWxkDQo+ID4gPiA+IGhh dmUgdGhvdWdodCBhIHBlci1leHRlbnQgYmFzaXMgd2FzIG1vcmUgdXNlZnVsLiAgRXNzZW50aWFs bHksIGNyZWF0ZQ0KPiA+ID4gPiBhIG5ldyBhZGRyZXNzX3NwYWNlIGZvciBlYWNoIHNoYXJlZCBl eHRlbnQuICBQZXIgcGFnZSBqdXN0IHNlZW1zIGxpa2UNCj4gPiA+ID4gYSBodWdlIG92ZXJoZWFk Lg0KPiA+ID4gPiANCj4gPiA+IFBlci1leHRlbnQgdHJhY2tpbmcgaXMgYSBuaWNlIGlkZWEgZm9y IG1lLiAgSSBoYXZlbid0IHRob3VnaHQgb2YgaXQNCj4gPiA+IHlldC4uLg0KPiA+ID4gDQo+ID4g PiBCdXQgdGhlIGV4dGVudCBpbmZvIGlzIG1haW50YWluZWQgYnkgZmlsZXN5c3RlbS4gIEkgdGhp bmsgd2UgbmVlZCBhIHdheQ0KPiA+ID4gdG8gb2J0YWluIHRoaXMgaW5mbyBmcm9tIEZTIHdoZW4g YXNzb2NpYXRpbmcgYSBwYWdlLiAgTWF5IGJlIGEgYml0DQo+ID4gPiBjb21wbGljYXRlZC4gIExl dCBtZSB0aGluayBhYm91dCBpdC4uLg0KPiA+IA0KPiA+IFRoYXQncyB3aHkgSSB3YW50IHRoZSAt dXNlciBvZiB0aGlzIGFzc29jaWF0aW9uLSB0byBkbyBhIGZpbGVzeXN0ZW0NCj4gPiBjYWxsb3V0 IGluc3RlYWQgb2Yga2VlcGluZyBpdCdzIG93biBuYWl2ZSB0cmFja2luZyBpbmZyYXN0cnVjdHVy ZS4NCj4gPiBUaGUgZmlsZXN5c3RlbSBjYW4gZG8gYW4gZWZmaWNpZW50LCBvbi1kZW1hbmQgcmV2 ZXJzZSBtYXBwaW5nIGxvb2t1cA0KPiA+IGZyb20gaXQncyBvd24gZXh0ZW50IHRyYWNraW5nIGlu ZnJhc3RydWN0dXJlLCBhbmQgdGhlcmUncyB6ZXJvDQo+ID4gcnVudGltZSBvdmVyaGVhZCB3aGVu IHRoZXJlIGFyZSBubyBlcnJvcnMgcHJlc2VudC4NCj4gPiANCj4gPiBBdCB0aGUgbW9tZW50LCB0 aGlzICJkYXggYXNzb2NpYXRpb24iIGlzIHVzZWQgdG8gInJlcG9ydCIgYSBzdG9yYWdlDQo+ID4g bWVkaWEgZXJyb3IgZGlyZWN0bHkgdG8gdXNlcnNwYWNlLiBJIHNheSAicmVwb3J0IiBiZWNhdXNl IHdoYXQgaXQNCj4gPiBkb2VzIGlzIGtpbGwgdXNlcnNwYWNlIHByb2Nlc3NlcyBkZWFkLiBUaGUg c3RvcmFnZSBtZWRpYSBlcnJvcg0KPiA+IGFjdHVhbGx5IG5lZWRzIHRvIGJlIHJlcG9ydGVkIHRv IHRoZSBvd25lciBvZiB0aGUgc3RvcmFnZSBtZWRpYSwNCj4gPiB3aGljaCBpbiB0aGUgY2FzZSBv ZiBGUy1EQVggaXMgdGhlIGZpbGVzeXRlbS4NCj4gDQo+IFVuZGVyc3Rvb2QuDQo+IA0KPiBCVFcs IHRoaXMgaXMgdGhlIHVzYWdlIGluIG1lbW9yeS1mYWlsdXJlLCBzbyB3aGF0IGFib3V0IHJtYXA/ ICBJIGhhdmUgbm90DQo+IGZvdW5kIGhvdyB0byB1c2UgdGhpcyB0cmFja2luZyBpbiBybWFwLiAg RG8geW91IGhhdmUgYW55IGlkZWFzPw0KPiANCj4gPiANCj4gPiBUaGF0IHdheSB0aGUgZmlsZXN5 c3RlbSBjYW4gdGhlbiBsb29rIHVwIGFsbCB0aGUgb3duZXJzIG9mIHRoYXQgYmFkDQo+ID4gbWVk aWEgcmFuZ2UgKGkuZS4gdGhlIGZpbGVzeXN0ZW0gYmxvY2sgaXQgY29ycmVzcG9uZHMgdG8pIGFu ZCB0YWtlDQo+ID4gYXBwcm9wcmlhdGUgYWN0aW9uLiBlLmcuDQo+IA0KPiBJIHRyaWVkIHdyaXRp bmcgYSBmdW5jdGlvbiB0byBsb29rIHVwIGFsbCB0aGUgb3duZXJzJyBpbmZvIG9mIG9uZSBibG9j ayBpbg0KPiB4ZnMgZm9yIG1lbW9yeS1mYWlsdXJlIHVzZS4gIEl0IHdhcyBkcm9wcGVkIGluIHRo aXMgcGF0Y2hzZXQgYmVjYXVzZSBJIGZvdW5kDQo+IG91dCB0aGF0IHRoaXMgbG9va3VwIGZ1bmN0 aW9uIG5lZWRzICdybWFwYnQnIHRvIGJlIGVuYWJsZWQgd2hlbiBta2ZzLiAgQnV0DQo+IGJ5IGRl ZmF1bHQsIHJtYXBidCBpcyBkaXNhYmxlZC4gIEkgYW0gbm90IHN1cmUgaWYgaXQgbWF0dGVycy4u Lg0KDQpJJ20gcHJldHR5IHN1cmUgeW91IGNhbid0IGhhdmUgc2hhcmVkIGV4dGVudHMgb24gYW4g WEZTIGZpbGVzeXN0ZW0gaWYgeW91DQpfZG9uJ3RfIGhhdmUgdGhlIHJtYXBidCBmZWF0dXJlIGVu YWJsZWQuICBJIG1lYW4sIHRoYXQncyB3aHkgaXQgZXhpc3RzLgpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwpMaW51eC1udmRpbW0gbWFpbGluZyBsaXN0IC0t IGxpbnV4LW52ZGltbUBsaXN0cy4wMS5vcmcKVG8gdW5zdWJzY3JpYmUgc2VuZCBhbiBlbWFpbCB0 byBsaW51eC1udmRpbW0tbGVhdmVAbGlzdHMuMDEub3JnCg==