From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Bart Van Assche To: "hch@lst.de" , "keith.busch@intel.com" , "linux-nvme@lists.infradead.org" , "linux-block@vger.kernel.org" , "axboe@kernel.dk" , "ming.lei@redhat.com" Subject: Re: [RFC PATCH 3/3] blk-mq: Remove generation seqeunce Date: Mon, 21 May 2018 23:29:06 +0000 Message-ID: References: <20180521231131.6685-1-keith.busch@intel.com> <20180521231131.6685-4-keith.busch@intel.com> In-Reply-To: <20180521231131.6685-4-keith.busch@intel.com> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 List-ID: T24gTW9uLCAyMDE4LTA1LTIxIGF0IDE3OjExIC0wNjAwLCBLZWl0aCBCdXNjaCB3cm90ZToNCj4g QEAgLTY1MCwyNyArNjAwLDEwIEBAIHN0YXRpYyB1NjQgYmxrX21xX3JxX2Fib3J0ZWRfZ3N0YXRl KHN0cnVjdCByZXF1ZXN0ICpycSkNCj4gIHZvaWQgYmxrX21xX2NvbXBsZXRlX3JlcXVlc3Qoc3Ry dWN0IHJlcXVlc3QgKnJxKQ0KPiAgew0KPiAgCXN0cnVjdCByZXF1ZXN0X3F1ZXVlICpxID0gcnEt PnE7DQo+IC0Jc3RydWN0IGJsa19tcV9od19jdHggKmhjdHggPSBibGtfbXFfbWFwX3F1ZXVlKHEs IHJxLT5tcV9jdHgtPmNwdSk7DQo+IC0JaW50IHNyY3VfaWR4Ow0KPiAgDQo+ICAJaWYgKHVubGlr ZWx5KGJsa19zaG91bGRfZmFrZV90aW1lb3V0KHEpKSkNCj4gIAkJcmV0dXJuOw0KPiAtCVsgLi4u IF0NCj4gKwlfX2Jsa19tcV9jb21wbGV0ZV9yZXF1ZXN0KHJxKTsNCj4gIH0NCj4gIEVYUE9SVF9T WU1CT0woYmxrX21xX2NvbXBsZXRlX3JlcXVlc3QpOw0KPiBbIC4uLiBdDQo+ICBzdGF0aWMgdm9p ZCBibGtfbXFfcnFfdGltZWRfb3V0KHN0cnVjdCByZXF1ZXN0ICpyZXEsIGJvb2wgcmVzZXJ2ZWQp DQo+ICB7DQo+ICAJY29uc3Qgc3RydWN0IGJsa19tcV9vcHMgKm9wcyA9IHJlcS0+cS0+bXFfb3Bz Ow0KPiAgCWVudW0gYmxrX2VoX3RpbWVyX3JldHVybiByZXQgPSBCTEtfRUhfUkVTRVRfVElNRVI7 DQo+ICANCj4gLQlyZXEtPnJxX2ZsYWdzIHw9IFJRRl9NUV9USU1FT1VUX0VYUElSRUQ7DQo+IC0N Cj4gIAlpZiAob3BzLT50aW1lb3V0KQ0KPiAgCQlyZXQgPSBvcHMtPnRpbWVvdXQocmVxLCByZXNl cnZlZCk7DQo+ICANCj4gIAlzd2l0Y2ggKHJldCkgew0KPiAgCWNhc2UgQkxLX0VIX0hBTkRMRUQ6 DQo+IC0JCV9fYmxrX21xX2NvbXBsZXRlX3JlcXVlc3QocmVxKTsNCj4gLQkJYnJlYWs7DQo+IC0J Y2FzZSBCTEtfRUhfUkVTRVRfVElNRVI6DQo+ICAJCS8qDQo+IC0JCSAqIEFzIG5vdGhpbmcgcHJl dmVudHMgZnJvbSBjb21wbGV0aW9uIGhhcHBlbmluZyB3aGlsZQ0KPiAtCQkgKiAtPmFib3J0ZWRf Z3N0YXRlIGlzIHNldCwgdGhpcyBtYXkgbGVhZCB0byBpZ25vcmVkDQo+IC0JCSAqIGNvbXBsZXRp b25zIGFuZCBmdXJ0aGVyIHNwdXJpb3VzIHRpbWVvdXRzLg0KPiArCQkgKiBJZiB0aGUgcmVxdWVz dCBpcyBzdGlsbCBpbiBmbGlnaHQsIHRoZSBkcml2ZXIgaXMgcmVxdWVzdGluZw0KPiArCQkgKiBi bGstbXEgY29tcGxldGUgaXQuDQo+ICAJCSAqLw0KPiAtCQlibGtfbXFfcnFfdXBkYXRlX2Fib3J0 ZWRfZ3N0YXRlKHJlcSwgMCk7DQo+ICsJCWlmIChibGtfbXFfcnFfc3RhdGUocmVxKSA9PSBNUV9S UV9JTl9GTElHSFQpDQo+ICsJCQlfX2Jsa19tcV9jb21wbGV0ZV9yZXF1ZXN0KHJlcSk7DQo+ICsJ CWJyZWFrOw0KPiArCWNhc2UgQkxLX0VIX1JFU0VUX1RJTUVSOg0KPiAgCQlibGtfYWRkX3RpbWVy KHJlcSk7DQo+ICAJCWJyZWFrOw0KPiAgCWNhc2UgQkxLX0VIX05PVF9IQU5ETEVEOg0KPiBAQCAt ODgwLDY0ICs3ODIsNjQgQEAgc3RhdGljIHZvaWQgYmxrX21xX3JxX3RpbWVkX291dChzdHJ1Y3Qg cmVxdWVzdCAqcmVxLCBib29sIHJlc2VydmVkKQ0KPiAgCX0NCj4gIH0NCg0KSSB0aGluayB0aGUg YWJvdmUgY2hhbmdlcyBjYW4gbGVhZCB0byBjb25jdXJyZW50IGNhbGxzIG9mDQpfX2Jsa19tcV9j b21wbGV0ZV9yZXF1ZXN0KCkgZnJvbSB0aGUgcmVndWxhciBjb21wbGV0aW9uIHBhdGggYW5kIHRo ZSB0aW1lb3V0DQpwYXRoLiBUaGF0J3Mgd3Jvbmc6IHRoZSBfX2Jsa19tcV9jb21wbGV0ZV9yZXF1 ZXN0KCkgY2FsbGVyIHNob3VsZCBndWFyYW50ZWUNCnRoYXQgbm8gY29uY3VycmVudCBjYWxscyBm cm9tIGFub3RoZXIgY29udGV4dCB0byB0aGF0IGZ1bmN0aW9uIGNhbiBvY2N1ci4NCg0KQmFydC4=