From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from newverein.lst.de (verein.lst.de [213.95.11.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 4AD7B21D49110 for ; Sat, 12 Aug 2017 00:31:30 -0700 (PDT) Date: Sat, 12 Aug 2017 09:33:49 +0200 From: Christoph Hellwig Subject: Re: [PATCH v2 0/5] fs, xfs: block map immutable files for dax, dma-to-storage, and swap Message-ID: <20170812073349.GA12679@lst.de> References: <150181368442.32119.13336247800141074356.stgit@dwillia2-desk3.amr.corp.intel.com> <20170805095013.GC14930@lst.de> <20170811104429.GA13736@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" To: Dan Williams Cc: Jan Kara , "linux-nvdimm@lists.01.org" , Linux API , "Darrick J. Wong" , Dave Chinner , "linux-kernel@vger.kernel.org" , linux-xfs@vger.kernel.org, Alexander Viro , Andy Lutomirski , linux-fsdevel , Christoph Hellwig List-ID: T24gRnJpLCBBdWcgMTEsIDIwMTcgYXQgMDM6MjY6MDVQTSAtMDcwMCwgRGFuIFdpbGxpYW1zIHdy b3RlOgo+IFJpZ2h0LCBidXQgdGhleSBsZXQgdXNlcnNwYWNlIG1ha2UgaW5mZXJlbmNlcyBhYm91 dCB0aGUgc3RhdGUgb2YKPiBtZXRhZGF0YSByZWxhdGl2ZSB0byBJL08gdG8gYSBnaXZlbiBzdG9y YWdlIGFkZHJlc3MuIEluIHRoaXMgcmVnYXJkCj4gU19JT01BUF9JTU1VVEFCTEUgaXMgbm8gZGlm ZmVyZW50IHRoYW4gTUFQX1NZTkMsIGJ1dCAnaW1tdXRhYmxlJyBnb2VzCj4gYSBzdGVwIGZ1cnRo ZXIgdG8gbGV0IGFuIGFwcGxpY2F0aW9uIGluZmVyIHRoYXQgdGhlIHN0b3JhZ2UgYWRkcmVzcyBp cwo+IHN0YWJsZS4gVGhpcyBlbmFibGVzIGFwcGxpY2F0aW9ucyB0aGF0IE1BUF9TWU5DIGRvZXMg bm90LCBzZWUgYmVsb3cuCgpCdXQgdGhlIGFwcGxpY2F0aW9uIG11c3Qgbm90IGtub3cgKGFuZCBj YW5ub3Qga25vdykgdGhlIHN0b3JhZ2UgYWRkcmVzcywKc28gaXQgZG9lc24ndCBtYXR0ZXIuCgo+ ID4gV2hhdCBpcyB0aGUgb2JzZXJ2YWJsZSBiZWhhdmlvciBvZiBhbiBleHRlbnQgbWFwIGNoYW5n ZT8gIEhvdyBjYW4geW91Cj4gPiBkZXNjcmliZSB5b3VyIGltbXV0YWJsZSBleHRlbnQgbWFwIGJl aGF2aW9yIHNvIHRoYXQgd2hlbiBJIHZpb2xhdGUKPiA+IHRoZW0gYnkgZS5nLiBtb3Zpbmcgb25l IGV4dGVudCB0byBhIGRpZmZlcmVudCBwbGFjZSBvbiBkaXNrIHlvdSBjYW4KPiA+IG9ic2VydmUg dGhhdCBpbiB1c2Vyc3BhY2U/Cj4gCj4gVGhlIHZpb2xhdGlvbiBpcyBibG9ja2VkLCBpdCdzIGlt bXV0YWJsZS4gVXNpbmcgdGhpcyBmZWF0dXJlIG1lYW5zIHRoZQo+IGFwcGxpY2F0aW9uIGlzIHRh a2luZyBhd2F5IHNvbWUgb2YgdGhlIGtlcm5lbCdzIGZyZWVkb20uIFRoYXQgaXMgYQo+IHZhbGlk IC8gc2FmZSB0cmFkZW9mZiBmb3IgdGhlIHNldCBvZiBhcHBsaWNhdGlvbnMgdGhhdCB3b3VsZCBv dGhlcndpc2UKPiByZXNvcnQgdG8gcmF3IGRldmljZSBhY2Nlc3MuCgpXaGF0IGNhbiB0aGUgYXBw bGljYXRpb24gZG8gd2l0aCBpdCBzYWZlbHkgdGhhdCBpdCBjYW4ndCBvdGhlcndpc2UgZG8/ClNo b3J0IGFuc3dlcjogbm90aGluZy4KCj4gPgo+ID4gUGxlYXNlIGV4cGxhaW4gaG93IHRoaXMgaW50 ZXJmYWNlIGFsbG93cyBmb3IgYW55IHNvcnQgb2Ygc2FmZSB1c2Vyc3BhY2UKPiA+IERNQS4KPiAK PiBTbyB0aGlzIGlzIHdoZXJlIEkgY29udGludWUgdG8gc2VlIFNfSU9NQVBfSU1NVVRBQkxFIGJl aW5nIGFibGUgdG8KPiBzdXBwb3J0IGFwcGxpY2F0aW9ucyB0aGF0IE1BUF9TWU5DIGRvZXMgbm90 LiBEYXZlIG1lbnRpb25lZCB1c2Vyc3BhY2UKPiBwTkZTNCBzZXJ2ZXJzLCBidXQgdGhlcmUncyBh bHNvIFNhbWJhIGFuZCBvdGhlciBwcm90b2NvbHMgdGhhdCB3YW50IHRvCj4gbmVnb3RpYXRlIGEg ZGlyZWN0IHBhdGggdG8gcG1lbSBvdXRzaWRlIHRoZSBrZXJuZWwuCgpVc2Vyc3BhY2UgcE5GUyBz ZXJ2ZXJzIG11c3QgdXNlIGEgdXNlcnNwYWNlIGZpbGUgc3lzdGVtLiAgRXZlcnl0aGluZwplbHNl IGlzIGp1c3QgYnJhaW5kZWQgc3R1cGlkIGR1ZSB0byB0aGUgYW1vdW50IG9mIGNvbW11bmljYXRp b24gdGhleQpuZWVkIHRvIGRvLiAgQWxzbyBub3RlIHRoYXQgdGhlIG9ubHkgcE5GUyBsYXlvdXRz IHRoYXQgd291bGQgZXZlbiBjYXVzZQpkaXJlY3QgYmxvY2sgYWNjZXNzIGFyZSBwTkZTIGJsb2Nr L3Njc2kgYW5kIGZvciB0aG9zZSB0aGUKU19JT01BUF9JTU1VVEFCTEUgc2VtYW50aWNzIGFyZSBu b3QgdmVyeSB1c2VmdWwgKGJhY2tncm91bmQ6IEkgd3JvdGUKdGhlIExpbnV4IGltcGxlbWVudGF0 aW9uIGZvciB0aG9zZSwgYW5kIGF1dGhvcmVkIHRoZSBzY3NpIGxheW91dCBzcGVjKQoKCj4gQXBw bGljYXRpb25zIHRoYXQganVzdCB3YW50IGZsdXNoIGZyb20gdXNlcnNwYWNlIGNhbiB1c2UgTUFQ X1NZTkMsCj4gdGhvc2UgdGhhdCBuZWVkIHRvIHRlbXBvcmFyaWx5IHBpbiB0aGUgYmxvY2sgZm9y IFJETUEgY2FuIHVzZSB0aGUKPiBpbi1rZXJuZWwgcE5GUyBzZXJ2ZXIsIGFuZCB0aG9zZSB0aGF0 IG5lZWQgdG8gY29vcmRpbmF0ZSBib3RoIGZyb20KPiB1c2Vyc3BhY2UgY2FuIHVzZSBTX0lPTUFQ X0lNTVVUQUJMRS4gSXQncyBhIGNvbnRpbnV1bSwgbm90IGEKPiBjb21wZXRpdGlvbi4KCkFnYWlu IC0gaG93IGRvZXMgeW91ciBhcHBsaWNhdGlvbiBldmVuIGtub3cgdGhhdCBJIG1vdmVkIHlvdXIg YmxvY2sKYXJvdW5kIHdpdGggeW91ciBTX0lPTUFQX0lNTVVUQUJMRT8gIFdlIHNob3VsZCBuZXZl ciBhZGQgaW50ZXJmYWNlcwp0aGF0IG1hbmRhdGUgaW1wbGVtZW50YXRpb25zIC0gd2Ugc2hvdWxk IGJhc2VkIGludGVyZmFjZXMgYmFzZWQgb24KdXNlciBvYnNlcnZhYmxlIGJlaGF2aW9yIC0gYW5k IGRlYnVnIHRvb2xzIGxpa2UgZmllbWFwIGRvbid0IGNvdW50LgoKQmVmb3JlIGdvaW5nIGFueSBm dXJ0aGVyIHBsZWFzZSB3cml0ZSBhIG1hbiBwYWdlIHRoYXQgZGVzY3JpYmXRlSB5b3VyCmludGVu ZGVkIHNlbWFudGljcyBpbiBhIHdheSB0aGF0IGFuIGFwcGxpY2F0aW9uIHByb2dyYW1tZXIgdW5k ZXJzdGFuZHMuCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f CkxpbnV4LW52ZGltbSBtYWlsaW5nIGxpc3QKTGludXgtbnZkaW1tQGxpc3RzLjAxLm9yZwpodHRw czovL2xpc3RzLjAxLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LW52ZGltbQo=