From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Mon, 26 Aug 2019 12:17:59 -0600 From: Jonathan Corbet Message-ID: <20190826121759.6fa594b7@lwn.net> In-Reply-To: <20190821075714.65140-4-satyat@google.com> References: <20190821075714.65140-1-satyat@google.com> <20190821075714.65140-4-satyat@google.com> MIME-Version: 1.0 Subject: Re: [f2fs-dev] [PATCH v4 3/8] block: blk-crypto for Inline Encryption List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net To: Satya Tangirala Cc: linux-scsi@vger.kernel.org, Kim Boojin , Kuohong Wang , Barani Muthukumaran , linux-f2fs-devel@lists.sourceforge.net, linux-block@vger.kernel.org, linux-fscrypt@vger.kernel.org, linux-fsdevel@vger.kernel.org List-ID: T24gV2VkLCAyMSBBdWcgMjAxOSAwMDo1NzowOSAtMDcwMApTYXR5YSBUYW5naXJhbGEgPHNhdHlh dEBnb29nbGUuY29tPiB3cm90ZToKCj4gV2UgaW50cm9kdWNlIGJsay1jcnlwdG8sIHdoaWNoIG1h bmFnZXMgcHJvZ3JhbW1pbmcga2V5c2xvdHMgZm9yIHN0cnVjdAo+IGJpb3MuIFdpdGggYmxrLWNy eXB0bywgZmlsZXN5c3RlbXMgb25seSBuZWVkIHRvIGNhbGwgYmlvX2NyeXB0X3NldF9jdHggd2l0 aAo+IHRoZSBlbmNyeXB0aW9uIGtleSwgYWxnb3JpdGhtIGFuZCBkYXRhX3VuaXRfbnVtOyB0aGV5 IGRvbid0IGhhdmUgdG8gd29ycnkKPiBhYm91dCBnZXR0aW5nIGEga2V5c2xvdCBmb3IgZWFjaCBl bmNyeXB0aW9uIGNvbnRleHQsIGFzIGJsay1jcnlwdG8gaGFuZGxlcwo+IHRoYXQuIEJsay1jcnlw dG8gYWxzbyBtYWtlcyBpdCBwb3NzaWJsZSBmb3IgbGF5ZXJlZCBkZXZpY2VzIGxpa2UgZGV2aWNl Cj4gbWFwcGVyIHRvIG1ha2UgdXNlIG9mIGlubGluZSBlbmNyeXB0aW9uIGhhcmR3YXJlLgo+IAo+ IEJsay1jcnlwdG8gZGVsZWdhdGVzIGNyeXB0byBvcGVyYXRpb25zIHRvIGlubGluZSBlbmNyeXB0 aW9uIGhhcmR3YXJlIHdoZW4KPiBhdmFpbGFibGUsIGFuZCBhbHNvIGNvbnRhaW5zIGEgc29mdHdh cmUgZmFsbGJhY2sgdG8gdGhlIGtlcm5lbCBjcnlwdG8gQVBJLgo+IEZvciBtb3JlIGRldGFpbHMs IHJlZmVyIHRvIERvY3VtZW50YXRpb24vYmxvY2svYmxrLWNyeXB0by50eHQuCgpTbyB0aGF0IGZp bGUgZG9lc24ndCBzZWVtIHRvIGV4aXN0OyBkaWQgeW91IG1lYW4gaW5saW5lLWVuY3J5cHRpb24u dHh0CmhlcmU/Cgo+IFNpZ25lZC1vZmYtYnk6IFNhdHlhIFRhbmdpcmFsYSA8c2F0eWF0QGdvb2ds ZS5jb20+Cj4gLS0tCj4gIERvY3VtZW50YXRpb24vYmxvY2svaW5saW5lLWVuY3J5cHRpb24udHh0 IHwgMTg2ICsrKysrKwo+ICBibG9jay9LY29uZmlnICAgICAgICAgICAgICAgICAgICAgICAgICAg ICB8ICAgMiArCj4gIGJsb2NrL01ha2VmaWxlICAgICAgICAgICAgICAgICAgICAgICAgICAgIHwg ICAzICstCj4gIGJsb2NrL2Jpby1jcnlwdC1jdHguYyAgICAgICAgICAgICAgICAgICAgIHwgICA3 ICstCj4gIGJsb2NrL2Jpby5jICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIHwgICA1ICsK PiAgYmxvY2svYmxrLWNvcmUuYyAgICAgICAgICAgICAgICAgICAgICAgICAgfCAgMTEgKy0KPiAg YmxvY2svYmxrLWNyeXB0by5jICAgICAgICAgICAgICAgICAgICAgICAgfCA3MzcgKysrKysrKysr KysrKysrKysrKysrKwo+ICBpbmNsdWRlL2xpbnV4L2Jpby1jcnlwdC1jdHguaCAgICAgICAgICAg ICB8ICAgNyArCj4gIGluY2x1ZGUvbGludXgvYmxrLWNyeXB0by5oICAgICAgICAgICAgICAgIHwg IDQ3ICsrCj4gIDkgZmlsZXMgY2hhbmdlZCwgMTAwMiBpbnNlcnRpb25zKCspLCAzIGRlbGV0aW9u cygtKQo+ICBjcmVhdGUgbW9kZSAxMDA2NDQgRG9jdW1lbnRhdGlvbi9ibG9jay9pbmxpbmUtZW5j cnlwdGlvbi50eHQKPiAgY3JlYXRlIG1vZGUgMTAwNjQ0IGJsb2NrL2Jsay1jcnlwdG8uYwo+ICBj cmVhdGUgbW9kZSAxMDA2NDQgaW5jbHVkZS9saW51eC9ibGstY3J5cHRvLmgKPiAKPiBkaWZmIC0t Z2l0IGEvRG9jdW1lbnRhdGlvbi9ibG9jay9pbmxpbmUtZW5jcnlwdGlvbi50eHQgYi9Eb2N1bWVu dGF0aW9uL2Jsb2NrL2lubGluZS1lbmNyeXB0aW9uLnR4dAo+IG5ldyBmaWxlIG1vZGUgMTAwNjQ0 Cj4gaW5kZXggMDAwMDAwMDAwMDAwLi45MjU2MTFhNWVhNjUKPiAtLS0gL2Rldi9udWxsCj4gKysr IGIvRG9jdW1lbnRhdGlvbi9ibG9jay9pbmxpbmUtZW5jcnlwdGlvbi50eHQKClNvIHdlJ3ZlIGJl ZW4gZG9pbmcgb3VyIGJlc3QgdG8gZ2V0IHJpZCBvZiAudHh0IGZpbGVzIGluIHRoZSBkb2N1bWVu dGF0aW9uCnRyZWUuICBJJ2QgcmVhbGx5IGJlIGEgbG90IGhhcHBpZXIgaWYgdGhpcyB3ZXJlIGFu IFJTVCBmaWxlIGluc3RlYWQuICBUaGUKZ29vZCBuZXdzIGlzIHRoYXQgaXQncyBhbHJlYWR5IDk5 JSBSU1QsIHNvIGxpdHRsZSB3b3VsZCBoYXZlIHRvIGNoYW5nZS4KClNlZSB0aGUgaW5mbyBpbiBE b2N1bWVudGF0aW9uL2RvYy1ndWlkZSBmb3IgZGV0YWlscy4KCj4gQEAgLTAsMCArMSwxODYgQEAK PiArQkxLLUNSWVBUTyBhbmQgS0VZU0xPVCBNQU5BR0VSCj4gKz09PT09PT09PT09PT09PT09PT09 PT09PT09PQo+ICsKPiArQ09OVEVOVFMKPiArMS4gT2JqZWN0aXZlCj4gKzIuIENvbnN0cmFpbnRz IGFuZCBub3Rlcwo+ICszLiBEZXNpZ24KPiArNC4gQmxrLWNyeXB0bwo+ICsgNC0xIFdoYXQgZG9l cyBibGstY3J5cHRvIGRvIG9uIGJpbyBzdWJtaXNzaW9uCj4gKzUuIExheWVyZWQgRGV2aWNlcwo+ ICs2LiBGdXR1cmUgb3B0aW1pemF0aW9ucyBmb3IgbGF5ZXJlZCBkZXZpY2VzCgpSU1Qgd291bGQg Z2VuZXJhdGUgdGhpcyBUT0MgZm9yIHlvdSwgc28geW91IGNhbiB0YWtlIGl0IG91dC4KCj4gKzEu IE9iamVjdGl2ZQo+ICs9PT09PT09PT09PT0KPiArCj4gK1dlIHdhbnQgdG8gc3VwcG9ydCBpbmxp bmUgZW5jcnlwdGlvbiAoSUUpIGluIHRoZSBrZXJuZWwuCj4gK1RvIGFsbG93IGZvciB0ZXN0aW5n LCB3ZSBhbHNvIHdhbnQgYSBjcnlwdG8gQVBJIGZhbGxiYWNrIHdoZW4gYWN0dWFsCj4gK0lFIGhh cmR3YXJlIGlzIGFic2VudC4gV2UgYWxzbyB3YW50IElFIHRvIHdvcmsgd2l0aCBsYXllcmVkIGRl dmljZXMKPiArbGlrZSBkbSBhbmQgbG9vcGJhY2sgKGkuZS4gd2Ugd2FudCB0byBiZSBhYmxlIHRv IHVzZSB0aGUgSUUgaGFyZHdhcmUKPiArb2YgdGhlIHVuZGVybHlpbmcgZGV2aWNlcyBpZiBwcmVz ZW50LCBvciBlbHNlIGZhbGwgYmFjayB0byBjcnlwdG8gQVBJCj4gK2VuL2RlY3J5cHRpb24pLgo+ ICsKPiArCj4gKzIuIENvbnN0cmFpbnRzIGFuZCBub3Rlcwo+ICs9PT09PT09PT09PT09PT09PT09 PT09PT0KPiArCj4gKzEpIElFIGhhcmR3YXJlIGhhdmUgYSBsaW1pdGVkIG51bWJlciBvZiDigJxr ZXlzbG90c+KAnSB0aGF0IGNhbiBiZSBwcm9ncmFtbWVkCgpTb21lIHBlb3BsZSBnZXQgaXJhdGUg d2hlbiB0aGV5IGVuY291bnRlciBub24tQVNDSUkgY2hhcmFjdGVycyBpbiB0aGUgZG9jczsKdGhh dCBpbmNsdWRlcyAic21hcnQgcXVvdGVzIi4KCkFsc28sIHMvaGF2ZS9oYXMvCgo+ICt3aXRoIGFu IGVuY3J5cHRpb24gY29udGV4dCAoa2V5LCBhbGdvcml0aG0sIGRhdGEgdW5pdCBzaXplLCBldGMu KSBhdCBhbnkgdGltZS4KPiArT25lIGNhbiBzcGVjaWZ5IGEga2V5c2xvdCBpbiBhIGRhdGEgcmVx dWVzdCBtYWRlIHRvIHRoZSBkZXZpY2UsIGFuZCB0aGUKPiArZGV2aWNlIHdpbGwgZW4vZGVjcnlw dCB0aGUgZGF0YSB1c2luZyB0aGUgZW5jcnlwdGlvbiBjb250ZXh0IHByb2dyYW1tZWQgaW50bwo+ ICt0aGF0IHNwZWNpZmllZCBrZXlzbG90LiBXaGVuIHBvc3NpYmxlLCB3ZSB3YW50IHRvIG1ha2Ug bXVsdGlwbGUgcmVxdWVzdHMgd2l0aAo+ICt0aGUgc2FtZSBlbmNyeXB0aW9uIGNvbnRleHQgc2hh cmUgdGhlIHNhbWUga2V5c2xvdC4KPiArCj4gKzIpIFdlIG5lZWQgYSB3YXkgZm9yIGZpbGVzeXN0 ZW1zIHRvIHNwZWNpZnkgYW4gZW5jcnlwdGlvbiBjb250ZXh0IHRvIHVzZSBmb3IKPiArZW4vZGVj cnlwdGluZyBhIHN0cnVjdCBiaW8sIGFuZCBhIGRldmljZSBkcml2ZXIgKGxpa2UgVUZTKSBuZWVk cyB0byBiZSBhYmxlCj4gK3RvIHVzZSB0aGF0IGVuY3J5cHRpb24gY29udGV4dCB3aGVuIGl0IHBy b2Nlc3NlcyB0aGUgYmlvLgo+ICsKPiArMykgV2UgbmVlZCBhIHdheSBmb3IgZGV2aWNlIGRyaXZl cnMgdG8gZXhwb3NlIHRoZWlyIGNhcGFiaWxpdGllcyBpbiBhIHVuaWZpZWQKPiArd2F5IHRvIHRo ZSB1cHBlciBsYXllcnMuCj4gKwo+ICsKPiArMy4gRGVzaWduCj4gKz09PT09PT09PQo+ICsKPiAr V2UgYWRkIGEgc3RydWN0IGJpb19jcnlwdF9jdHggdG8gc3RydWN0IGJpbyB0aGF0IGNhbiByZXBy ZXNlbnQgYW4KPiArZW5jcnlwdGlvbiBjb250ZXh0LCBiZWNhdXNlIHdlIG5lZWQgdG8gYmUgYWJs ZSB0byBwYXNzIHRoaXMgZW5jcnlwdGlvbgo+ICtjb250ZXh0IGZyb20gdGhlIEZTIGxheWVyIHRv IHRoZSBkZXZpY2UgZHJpdmVyIHRvIGFjdCB1cG9uLgo+ICsKPiArV2hpbGUgSUUgaGFyZHdhcmUg d29ya3Mgb24gdGhlIG5vdGlvbiBvZiBrZXlzbG90cywgdGhlIEZTIGxheWVyIGhhcyBubwo+ICtr bm93bGVkZ2Ugb2Yga2V5c2xvdHMgLSBpdCBzaW1wbHkgd2FudHMgdG8gc3BlY2lmeSBhbiBlbmNy eXB0aW9uIGNvbnRleHQgdG8KPiArdXNlIHdoaWxlIGVuL2RlY3J5cHRpbmcgYSBiaW8uCj4gKwo+ ICtXZSBpbnRyb2R1Y2UgYSBrZXlzbG90IG1hbmFnZXIgKEtTTSkgdGhhdCBoYW5kbGVzIHRoZSB0 cmFuc2xhdGlvbiBmcm9tCj4gK2VuY3J5cHRpb24gY29udGV4dHMgc3BlY2lmaWVkIGJ5IHRoZSBG UyB0byBrZXlzbG90cyBvbiB0aGUgSUUgaGFyZHdhcmUuCgpTby4uLmlmIHRoaXMgd2VyZSBSU1Qs IHlvdSBjb3VsZCBoYXZlIGRpcmVjdGl2ZXMgdG8gcHVsbCBpbiB0aGUgbmljZQprZXJuZWxkb2Mg Y29tbWVudHMgeW91J3ZlIGFscmVhZHkgcHV0IGludG8gdGhlIHNvdXJjZS4KCkknbGwgc3RvcCBo ZXJlLi4ucHJlc3VtYWJseSBJJ3ZlIG1hZGUgbXkgcG9pbnQgYnkgbm93IDopCgpUaGFua3MgZm9y IGRvY3VtZW50aW5nIHRoaXMgc3Vic3lzdGVtIQoKam9uCgoKX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX18KTGludXgtZjJmcy1kZXZlbCBtYWlsaW5nIGxpc3QK TGludXgtZjJmcy1kZXZlbEBsaXN0cy5zb3VyY2Vmb3JnZS5uZXQKaHR0cHM6Ly9saXN0cy5zb3Vy Y2Vmb3JnZS5uZXQvbGlzdHMvbGlzdGluZm8vbGludXgtZjJmcy1kZXZlbAo=