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Wed, 13 May 2020 12:03:57 -0700 (PDT) Subject: Re: [PATCH 06/16] nvme: enforce extended LBA format for fabrics metadata To: Max Gurtovoy , linux-nvme@lists.infradead.org, kbusch@kernel.org, hch@lst.de, sagi@grimberg.me, martin.petersen@oracle.com, jsmart2021@gmail.com, axboe@kernel.dk References: <20200504155755.221125-1-maxg@mellanox.com> <20200504155755.221125-7-maxg@mellanox.com> From: James Smart Message-ID: <33e04c87-f41a-e5a4-05f0-807d52bb78ff@broadcom.com> Date: Wed, 13 May 2020 12:03:54 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200504155755.221125-7-maxg@mellanox.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200513_120400_298419_C2202364 X-CRM114-Status: GOOD ( 19.89 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vladimirk@mellanox.com, idanb@mellanox.com, israelr@mellanox.com, shlomin@mellanox.com, oren@mellanox.com, nitzanc@mellanox.com Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org CgpPbiA1LzQvMjAyMCA4OjU3IEFNLCBNYXggR3VydG92b3kgd3JvdGU6Cj4gQW4gZXh0ZW5kZWQg TEJBIGlzIGEgbGFyZ2VyIExCQSB0aGF0IGlzIGNyZWF0ZWQgd2hlbiBtZXRhZGF0YSBhc3NvY2lh dGVkCj4gd2l0aCB0aGUgTEJBIGlzIHRyYW5zZmVycmVkIGNvbnRpZ3VvdXNseSB3aXRoIHRoZSBM QkEgZGF0YSAoQUtBCj4gaW50ZXJsZWF2ZWQpLiBUaGUgbWV0YWRhdGEgbWF5IGJlIGVpdGhlciB0 cmFuc2ZlcnJlZCBhcyBwYXJ0IG9mIHRoZSBMQkEKPiAoY3JlYXRpbmcgYW4gZXh0ZW5kZWQgTEJB KSBvciBpdCBtYXkgYmUgdHJhbnNmZXJyZWQgYXMgYSBzZXBhcmF0ZQo+IGNvbnRpZ3VvdXMgYnVm ZmVyIG9mIGRhdGEuIEFjY29yZGluZyB0byB0aGUgTlZNZW9GIHNwZWMsIGEgZmFicmljcyBjdHJs Cj4gc3VwcG9ydHMgb25seSBhbiBFeHRlbmRlZCBMQkEgZm9ybWF0LiBGYWlsIHJldmFsaWRhdGlv biBpbiBjYXNlIHdlIGhhdmUgYQo+IHNwZWMgdmlvbGF0aW9uLiBBbHNvIGFkZCBhIGZsYWcgdGhh dCB3aWxsIGltcGx5IG9uIGNhcGFibGUgdHJhbnNwb3J0cyBhbmQKPiBjb250cm9sbGVycyBhcyBw YXJ0IG9mIGEgcHJlcGFyYXRpb24gZm9yIGFsbG93aW5nIGVuZC10by1lbmQgcHJvdGVjdGlvbgo+ IGluZm9ybWF0aW9uIGZvciBmYWJyaWMgY29udHJvbGxlcnMuCj4KPiBTdWdnZXN0ZWQtYnk6IENo cmlzdG9waCBIZWxsd2lnIDxoY2hAbHN0LmRlPgo+IFNpZ25lZC1vZmYtYnk6IE1heCBHdXJ0b3Zv eSA8bWF4Z0BtZWxsYW5veC5jb20+Cj4gU2lnbmVkLW9mZi1ieTogSXNyYWVsIFJ1a3NoaW4gPGlz cmFlbHJAbWVsbGFub3guY29tPgo+IFJldmlld2VkLWJ5OiBDaHJpc3RvcGggSGVsbHdpZyA8aGNo QGxzdC5kZT4KPiAtLS0KPiAgIGRyaXZlcnMvbnZtZS9ob3N0L2NvcmUuYyB8IDQxICsrKysrKysr KysrKysrKysrKysrKysrKysrKy0tLS0tLS0tLS0tLS0tCj4gICAxIGZpbGUgY2hhbmdlZCwgMjcg aW5zZXJ0aW9ucygrKSwgMTQgZGVsZXRpb25zKC0pCj4KPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9u dm1lL2hvc3QvY29yZS5jIGIvZHJpdmVycy9udm1lL2hvc3QvY29yZS5jCj4gaW5kZXggODliMWJm Y2IuLmY1NjUyODEgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9udm1lL2hvc3QvY29yZS5jCj4gKysr IGIvZHJpdmVycy9udm1lL2hvc3QvY29yZS5jCj4gQEAgLTE5NDEsMTYgKzE5NDIsMjQgQEAgc3Rh dGljIHZvaWQgX19udm1lX3JldmFsaWRhdGVfZGlzayhzdHJ1Y3QgZ2VuZGlzayAqZGlzaywgc3Ry dWN0IG52bWVfaWRfbnMgKmlkKQo+ICAgCQlucy0+cGlfdHlwZSA9IDA7Cj4gICAKPiAgIAlpZiAo bnMtPm1zKSB7Cj4gLQkJaWYgKGlkLT5mbGJhcyAmIE5WTUVfTlNfRkxCQVNfTUVUQV9FWFQpCj4g LQkJCW5zLT5mZWF0dXJlcyB8PSBOVk1FX05TX0VYVF9MQkFTOwo+IC0KPiAgIAkJLyoKPiAtCQkg KiBGb3IgUENJLCBFeHRlbmRlZCBsb2dpY2FsIGJsb2NrIHdpbGwgYmUgZ2VuZXJhdGVkIGJ5IHRo ZQo+IC0JCSAqIGNvbnRyb2xsZXIuIE5vbi1leHRlbmRlZCBmb3JtYXQgY2FuIGJlIGdlbmVyYXRl ZCBieSB0aGUKPiAtCQkgKiBibG9jayBsYXllci4KPiArCQkgKiBGb3IgUENJZSBvbmx5IHRoZSBz ZXBhcmF0ZSBtZXRhZGF0YSBwb2ludGVyIGlzIHN1cHBvcnRlZCwKPiArCQkgKiBhcyB0aGUgYmxv Y2sgbGF5ZXIgc3VwcGxpZXMgbWV0YWRhdGEgaW4gYSBzZXBhcmF0ZSBiaW9fdmVjCj4gKwkJICog Y2hhaW4uIEZvciBGYWJyaWNzLCBvbmx5IG1ldGFkYXRhIGFzIHBhcnQgb2YgZXh0ZW5kZWQgZGF0 YQo+ICsJCSAqIExCQSBpcyBzdXBwb3J0ZWQgb24gdGhlIHdpcmUgcGVyIHRoZSBGYWJyaWNzIHNw ZWNpZmljYXRpb24sCj4gKwkJICogYnV0IHRoZSBIQkEvSENBIHdpbGwgZG8gdGhlIHJlbWFwcGlu ZyBmcm9tIHRoZSBzZXBhcmF0ZQo+ICsJCSAqIG1ldGFkYXRhIGJ1ZmZlcnMgZm9yIHVzLgo+ICAg CQkgKi8KPiAtCQlpZiAobnMtPmN0cmwtPm9wcy0+ZmxhZ3MgJiBOVk1FX0ZfTUVUQURBVEFfU1VQ UE9SVEVEKSB7Cj4gLQkJCWlmICghKG5zLT5mZWF0dXJlcyAmIE5WTUVfTlNfRVhUX0xCQVMpKQo+ ICsJCWlmIChpZC0+ZmxiYXMgJiBOVk1FX05TX0ZMQkFTX01FVEFfRVhUKSB7Cj4gKwkJCW5zLT5m ZWF0dXJlcyB8PSBOVk1FX05TX0VYVF9MQkFTOwo+ICsJCQlpZiAoKGN0cmwtPm9wcy0+ZmxhZ3Mg JiBOVk1FX0ZfRkFCUklDUykgJiYKPiArCQkJICAgIChjdHJsLT5vcHMtPmZsYWdzICYgTlZNRV9G X01FVEFEQVRBX1NVUFBPUlRFRCkgJiYKPiArCQkJICAgIGN0cmwtPm1heF9pbnRlZ3JpdHlfc2Vn bWVudHMpCj4gKwkJCQlucy0+ZmVhdHVyZXMgfD0gTlZNRV9OU19NRVRBREFUQV9TVVBQT1JURUQ7 CgpUaGlzIGlzIG9rLsKgIExhdGVyIHBhdGNoZXMgd2lsbCBzaG91bGQgZGVhbCB3aXRoIG5vIGJs b2NrLWxheWVyIAppbnRlZ3JpdHkgYnVmZmVyLCBidXQgaGF2aW5nIHRoZSB0cmFuc3BvcnQgcG9y dCBhdXRvLWdlbmVyYXRlL3N0cmlwIAppbnRlcmxlYXZlZCBwaSBkYXRhLCBhcyB3ZSB3aWxsIHdh bnQgdG8gcHJvdGVjdCBkdXJpbmcgdHJhbnNtaXNzaW9uIG9uIAp0aGUgd2lyZSwgbm90IGp1c3Qg UFJBQ1Q9MSBpdC4KCj4gKwkJfSBlbHNlIHsKPiArCQkJaWYgKFdBUk5fT05fT05DRShjdHJsLT5v cHMtPmZsYWdzICYgTlZNRV9GX0ZBQlJJQ1MpKQo+ICsJCQkJcmV0dXJuIC1FSU5WQUw7Cj4gKwkJ CWlmIChjdHJsLT5vcHMtPmZsYWdzICYgTlZNRV9GX01FVEFEQVRBX1NVUFBPUlRFRCkKPiAgIAkJ CQlucy0+ZmVhdHVyZXMgfD0gTlZNRV9OU19NRVRBREFUQV9TVVBQT1JURUQ7Cj4gICAJCX0KClRo ZSBOVk1FX0ZfTUVUQURBVEFfU1VQUE9SVEVEIGZsYWcgc2hvdWxkIGJlIG9uIGEgcGVyLWN0cmwg YmFzaXMuIFRoZXJlIAp3aWxsIGJlIGRpZmZlcmVudCB0cmFuc3BvcnQgcG9ydHMgdW5kZXIgdGhl IHNhbWUgdHJhbnNwb3J0IHdpdGggCmRpZmZlcmVudCBhYmlsaXRpZXMuCgpJJ20gb2sgaWYgdGhl c2UgcGF0Y2hlcyBnbyBpbiwgdGhlbiBhIGxhdGVyIHBhdGNoIG1vdmVzIHRoZSBmbGFncyAobWln aHQgCmFzIHdlbGwgbW92ZSBOVk1FX0ZfRkFCUklDUyB0b28pLgoKClJldmlld2VkLWJ5OsKgIEph bWVzIFNtYXJ0IDxqYW1lcy5zbWFydEBicm9hZGNvbS5jb20+CgotLSBqYW1lcwoKCgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1udm1lIG1haWxp bmcgbGlzdApsaW51eC1udm1lQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJh ZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1udm1lCg==