From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from esa5.hgst.iphmx.com ([216.71.153.144]:48669 "EHLO esa5.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753231AbdKJQai (ORCPT ); Fri, 10 Nov 2017 11:30:38 -0500 From: Bart Van Assche To: "hch@infradead.org" , "linux-block@vger.kernel.org" , "axboe@fb.com" , "ming.lei@redhat.com" CC: "osandov@fb.com" , "hare@suse.com" Subject: Re: [PATCH] blk-mq: respect queue dead via blk_mq_quiesce_queue Date: Fri, 10 Nov 2017 16:30:35 +0000 Message-ID: <1510331434.2905.2.camel@wdc.com> References: <20171105121008.28180-1-ming.lei@redhat.com> <1509896328.2697.4.camel@wdc.com> In-Reply-To: <1509896328.2697.4.camel@wdc.com> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-block-owner@vger.kernel.org List-Id: linux-block@vger.kernel.org T24gU3VuLCAyMDE3LTExLTA1IGF0IDE1OjM4ICswMDAwLCBCYXJ0IFZhbiBBc3NjaGUgd3JvdGU6 DQo+IE9uIFN1biwgMjAxNy0xMS0wNSBhdCAyMDoxMCArMDgwMCwgTWluZyBMZWkgd3JvdGU6DQo+ ID4gZGlmZiAtLWdpdCBhL2Jsb2NrL2Jsay1jb3JlLmMgYi9ibG9jay9ibGstY29yZS5jDQo+ID4g aW5kZXggMDQ4YmU0YWE2MDI0Li4wYjEyMWYyOWUzYjEgMTAwNjQ0DQo+ID4gLS0tIGEvYmxvY2sv YmxrLWNvcmUuYw0KPiA+ICsrKyBiL2Jsb2NrL2Jsay1jb3JlLmMNCj4gPiBAQCAtNjU4LDYgKzY1 OCwxMCBAQCB2b2lkIGJsa19jbGVhbnVwX3F1ZXVlKHN0cnVjdCByZXF1ZXN0X3F1ZXVlICpxKQ0K PiA+ICAJcXVldWVfZmxhZ19zZXQoUVVFVUVfRkxBR19ERUFELCBxKTsNCj4gPiAgCXNwaW5fdW5s b2NrX2lycShsb2NrKTsNCj4gPiAgDQo+ID4gKwkvKiByZXNwZWN0IHF1ZXVlIERFQUQgdmlhIHF1 aWVzY2UgZm9yIGJsay1tcSAqLw0KPiA+ICsJaWYgKHEtPm1xX29wcykNCj4gPiArCQlibGtfbXFf cXVpZXNjZV9xdWV1ZShxKTsNCj4gPiArDQo+ID4gIAkvKiBmb3Igc3luY2hyb25vdXMgYmlvLWJh c2VkIGRyaXZlciBmaW5pc2ggaW4tZmxpZ2h0IGludGVncml0eSBpL28gKi8NCj4gPiAgCWJsa19m bHVzaF9pbnRlZ3JpdHkoKTsNCj4gDQo+IEhhdmUgeW91IGNvbnNpZGVyZWQgdG8gY2hhbmdlIHRo ZSBibGtfZnJlZXplX3F1ZXVlX3N0YXJ0KCkgY2FsbCBpbg0KPiBibGtfc2V0X3F1ZXVlX2R5aW5n KCkgaW50byBhIGJsa19mcmVlemVfcXVldWUoKSBjYWxsPyBUaGF0IGFwcHJvYWNoIGhhcyB0aGUN Cj4gYWR2YW50YWdlIHRoYXQgbm8gbmV3IGlmIChxLT5tcV9vcHMpIHRlc3QgaGFzIHRvIGJlIGlu dHJvZHVjZWQuDQoNClRoZXJlIGlzIGFuIGFkZGl0aW9uYWwgcmVhc29uIHdoeSBJIHRoaW5rIGl0 IHdvdWxkIGJlIGJldHRlciB0byBtYWtlDQpibGtfc2V0X3F1ZXVlX2R5aW5nKCkgd2FpdCB1bnRp bCByZXF1ZXN0cyB0aGF0IGFyZSBpbiBwcm9ncmVzcyBoYXZlIGZpbmlzaGVkLg0KU29tZSBibG9j ayBkcml2ZXJzLCBlLmcuIHRoZSBtdGlwIGRyaXZlciwgc3RhcnQgY2xlYW5pbmcgdXAgcmVzb3Vy Y2VzDQppbW1lZGlhdGVseSBhZnRlciBibGtfc2V0X3F1ZXVlX2R5aW5nKCkgaGFzIHJldHVybmVk LiBTbyBtYWtpbmcNCmJsa19zZXRfcXVldWVfZHlpbmcoKSB3YWl0IHdvdWxkIGZpeCBhIHJhY2Ug Y29uZGl0aW9uIGluIGF0IGxlYXN0IHRoZSBtdGlwDQpkcml2ZXIuDQoNCkJhcnQu