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Tue, 28 Jul 2020 10:11:53 -0700 (PDT) Subject: Re: [PATCH] nvme-fabrics: allow to queue requests for live queues To: Sagi Grimberg , Chao Leng , linux-nvme@lists.infradead.org, Christoph Hellwig , Keith Busch References: <20200728053523.21657-1-sagi@grimberg.me> <8ff91295-9393-a548-a46f-85d415d9cbc9@huawei.com> <233d8e35-f85f-458e-05ad-5baba1b04bbb@grimberg.me> From: James Smart Message-ID: Date: Tue, 28 Jul 2020 10:11:49 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <233d8e35-f85f-458e-05ad-5baba1b04bbb@grimberg.me> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200728_131157_496034_C48D63D0 X-CRM114-Status: GOOD ( 21.78 ) 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: , 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 CgpPbiA3LzI3LzIwMjAgMTE6NDkgUE0sIFNhZ2kgR3JpbWJlcmcgd3JvdGU6Cj4KPj4+IGRpZmYg LS1naXQgYS9kcml2ZXJzL252bWUvaG9zdC9mYWJyaWNzLmMgYi9kcml2ZXJzL252bWUvaG9zdC9m YWJyaWNzLmMKPj4+IGluZGV4IDRlYzQ4MjlkNjIzMy4uMmU3ODM4ZjQyZTM2IDEwMDY0NAo+Pj4g LS0tIGEvZHJpdmVycy9udm1lL2hvc3QvZmFicmljcy5jCj4+PiArKysgYi9kcml2ZXJzL252bWUv aG9zdC9mYWJyaWNzLmMKPj4+IEBAIC01NjQsMjEgKzU2NCwxMyBAQCBib29sIF9fbnZtZl9jaGVj a19yZWFkeShzdHJ1Y3QgbnZtZV9jdHJsIAo+Pj4gKmN0cmwsIHN0cnVjdCByZXF1ZXN0ICpycSwK Pj4+IMKgIHsKPj4+IMKgwqDCoMKgwqAgc3RydWN0IG52bWVfcmVxdWVzdCAqcmVxID0gbnZtZV9y ZXEocnEpOwo+Pj4gLcKgwqDCoCAvKgo+Pj4gLcKgwqDCoMKgICogSWYgd2UgYXJlIGluIHNvbWUg c3RhdGUgb2Ygc2V0dXAgb3IgdGVhcmRvd24gb25seSBhbGxvdwo+Pj4gLcKgwqDCoMKgICogaW50 ZXJuYWxseSBnZW5lcmF0ZWQgY29tbWFuZHMuCj4+PiAtwqDCoMKgwqAgKi8KPj4+IC3CoMKgwqAg aWYgKCFibGtfcnFfaXNfcGFzc3Rocm91Z2gocnEpIHx8IChyZXEtPmZsYWdzICYgTlZNRV9SRVFf VVNFUkNNRCkpCj4+ICJpZiAoIWJsa19ycV9pc19wYXNzdGhyb3VnaChycSkpIiBzaG91bGQgbm90 IGRlbGV0ZS4gQmVjYXVzZSBpZiB3ZSAKPj4gZGVsZXRlLAo+PiB0aGUgbm9ybWFsIGlvIHdpbGwg YmUgc2VuZCB0byB0YXJnZXQsIHRoZSB0YXJnZXQgY2FuIG5vdCB0cmVhdCB0aGUgaW8KPj4gaWYg dGhlIHF1ZXVlIGlzIG5vdCBOVk1FX0NUUkxfTElWRS4KPgo+IFN1cmUgaXQgZG9lcywgdGhlIG9u bHkgcmVhc29uIGZvciB1cyB0byBkZW55IHRoaXMgSS9PLCBpcyBpZiB0aGUgcXVldWUKPiBpcyBu b3QgbGl2ZS4gVGhlIGNvbnRyb2xsZXIgc3RhdGUgc2hvdWxkIG9ubHkgX2FkdmlzZV8gdXMgaWYg d2UgbmVlZCB0bwo+IGxvb2sgYXQgdGhlIHF1ZXVlIHN0YXRlLgoKSSBkaXNhZ3JlZSBzdHJvbmds eSB3aXRoIHJlbW92aW5nIHRoZSBjaGVjayBvbiBOVk1FX1JFUV9VU0VSQ01ELiBXZSd2ZSAKc2Vl biBjbGkgaW9jdGxzIGdvaW5nIHRvIHRoZSBhZG1pbiBxdWV1ZSB3aGlsZSB3ZSdyZSBpbiB0aGUg bWlkZGxlIG9mIApkb2luZyBjb250cm9sbGVyIGluaXRpYWxpemF0aW9uIGFuZCBpdCdzIGhhcyBo b3NlZCB0aGUgY29udHJvbGxlciBzdGF0ZSAKaW4gc29tZSBjYXNlcy4gV2UndmUgc2VlbiBjb21t YW5kcyBpc3N1ZWQgYmVmb3JlIHRoZSBjb250cm9sbGVyIGlzIGluIAp0aGUgcHJvcGVyIHN0YXRl LsKgIFRoZSBhZG1pbiBxdWV1ZSBtYXkgYmUgbGl2ZSAtIGJ1dCB3ZSBkb24ndCAKbmVjZXNzYXJp bHkgd2FudCBvdGhlciBpbyBzbmVha2luZyBpbi4KCkFzIGZvciB0aGUgYmxrX3JxX2lzX3Bhc3N0 aHJvdWdoIGNoZWNrIC0gSSBndWVzcyBJIGNhbiBzZWUgaXQgYmVpbmcgCmJhc2VkIG9uIHRoZSBx dWV1ZSBzdGF0ZSwgYW5kIHRoZSBjaGVjayBsb29rcyBva8KgICh3ZSBzaG91bGQgbmV2ZXIgc2Vl IAohYmxrX3JxX2lzX3Bhc3N0aHJvdWdoIG9uIHRoZSBhZG1pbiBxKS4KQnV0Li4uCi0gSSBkb24n dCBrbm93IHdoeSBpdCB3YXMgdGhhdCBpbXBvcnRhbnQgdG8gY2hhbmdlIGl0LiBPbiB0aGUgY29u bmVjdGluZyAKcGF0aCwgYWxsIHlvdSdyZSBkb2luZyBpcyBsZXR0aW5nIGlvIHN0YXJ0IGZsb3dp bmcgYmVmb3JlIGFsbCB0aGUgcXVldWVzIApoYXZlIGJlZW4gY3JlYXRlZC7CoCBEaWQgeW91IHJl YWxseSBuZWVkIHRvIHN0YXJ0IHRoYXQgbXVjaCBzb29uZXIgPwoKLSBCdXQgb24gdGhlIHJlc2V0 dGluZyBwYXRoLCBvciBkZWxldGluZyBjYXNlcywgeW91J3ZlIGFkZGVkIGEgY29uZGl0aW9uIApu b3cgd2hlcmUgdGhlIGNvbnRyb2xsZXIgc3RhdGUgd2FzIGNoYW5nZWQsIGJ1dCB0aGVyZSB3YXMg YSBkZWxheSBiZWZvcmUgCnRoZSB0cmFuc3BvcnQgbWFya2VkIHRoZSBxdWV1ZSBsaXZlLiBJdCdz IGNvbW1vbiBwcmFjdGljZSBpbiB0aGUgCnRyYW5zcG9ydHMgdG8gY2hhbmdlIHN0YXRlIHRoZW4g c2NoZWR1bGUgYSB3b3JrIGVsZW1lbnQgdG8gcGVyZm9ybSB0aGUgCmFjdHVhbCBzdGF0ZSBjaGFu Z2UuwqAgV2h5IHdvdWxkIHlvdSB3YW50IGlvIHRvIGNvbnRpbnVlIHRvIGZsb3cgZHVyaW5nIAp0 aGF0IHdpbmRvdyA/wqDCoCBUaGlzIG1heSBicmluZyBvdXQgb3RoZXIgcHJvYmxlbXMgd2UndmUg YXZvaWRlZCBpbiB0aGUgcGFzdC4KCi0tIGphbWVzCgoKCl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fCkxpbnV4LW52bWUgbWFpbGluZyBsaXN0CkxpbnV4LW52 bWVAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFu L2xpc3RpbmZvL2xpbnV4LW52bWUK