From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bart Van Assche Subject: Re: [PATCH 1/5] blk-mq: introduce BLK_STS_DEV_RESOURCE Date: Mon, 22 Jan 2018 16:49:54 +0000 Message-ID: <1516639793.2545.14.camel@sandisk.com> References: <20180122033550.27855-1-ming.lei@redhat.com> <20180122033550.27855-2-ming.lei@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20180122033550.27855-2-ming.lei@redhat.com> Content-Language: en-US Content-ID: <88713A9BDCEBD04BA95CC23DD3DBEF57@namprd04.prod.outlook.com> Sender: linux-block-owner@vger.kernel.org To: "hch@infradead.org" , "linux-block@vger.kernel.org" , "snitzer@redhat.com" , "ming.lei@redhat.com" , "axboe@kernel.dk" Cc: "dm-devel@redhat.com" , "jejb@linux.vnet.ibm.com" , "linux-scsi@vger.kernel.org" , "martin.petersen@oracle.com" , "loberman@redhat.com" List-Id: dm-devel.ids T24gTW9uLCAyMDE4LTAxLTIyIGF0IDExOjM1ICswODAwLCBNaW5nIExlaSB3cm90ZToNCj4gQEAg LTEyODAsMTAgKzEyODIsMTggQEAgYm9vbCBibGtfbXFfZGlzcGF0Y2hfcnFfbGlzdChzdHJ1Y3Qg cmVxdWVzdF9xdWV1ZSAqcSwgc3RydWN0IGxpc3RfaGVhZCAqbGlzdCwNCj4gIAkJICogLSBTb21l IGJ1dCBub3QgYWxsIGJsb2NrIGRyaXZlcnMgc3RvcCBhIHF1ZXVlIGJlZm9yZQ0KPiAgCQkgKiAg IHJldHVybmluZyBCTEtfU1RTX1JFU09VUkNFLiBUd28gZXhjZXB0aW9ucyBhcmUgc2NzaS1tcQ0K PiAgCQkgKiAgIGFuZCBkbS1ycS4NCj4gKwkJICoNCj4gKwkJICogSWYgZHJpdmVycyByZXR1cm4g QkxLX1NUU19SRVNPVVJDRSBhbmQgU19TQ0hFRF9SRVNUQVJUDQo+ICsJCSAqIGJpdCBpcyBzZXQs IHJ1biBxdWV1ZSBhZnRlciAxMG1zIGZvciBhdm9pZGluZyBJTyBoYW5nDQo+ICsJCSAqIGJlY2F1 c2UgdGhlIHF1ZXVlIG1heSBiZSBpZGxlIGFuZCB0aGUgUkVTVEFSVCBtZWNoYW5pc20NCj4gKwkJ ICogY2FuJ3Qgd29yayBhbnkgbW9yZS4NCj4gIAkJICovDQo+IC0JCWlmICghYmxrX21xX3NjaGVk X25lZWRzX3Jlc3RhcnQoaGN0eCkgfHwNCj4gKwkJbmVlZHNfcmVzdGFydCA9IGJsa19tcV9zY2hl ZF9uZWVkc19yZXN0YXJ0KGhjdHgpOw0KPiArCQlpZiAoIW5lZWRzX3Jlc3RhcnQgfHwNCj4gIAkJ ICAgIChub190YWcgJiYgbGlzdF9lbXB0eV9jYXJlZnVsKCZoY3R4LT5kaXNwYXRjaF93YWl0LmVu dHJ5KSkpDQo+ICAJCQlibGtfbXFfcnVuX2h3X3F1ZXVlKGhjdHgsIHRydWUpOw0KPiArCQllbHNl IGlmIChuZWVkc19yZXN0YXJ0ICYmIChyZXQgPT0gQkxLX1NUU19SRVNPVVJDRSkpDQo+ICsJCQli bGtfbXFfZGVsYXlfcnVuX2h3X3F1ZXVlKGhjdHgsIDEwKTsNCj4gIAl9DQoNCkluIG15IG9waW5p b24gdGhlcmUgYXJlIHR3byBwcm9ibGVtcyB3aXRoIHRoZSBhYm92ZSBjaGFuZ2VzOg0KKiBPbmx5 IHRoZSBibG9jayBkcml2ZXIgYXV0aG9yIGNhbiBrbm93IHdoYXQgYSBnb29kIGNob2ljZSBpcyBm b3IgdGhlIHRpbWUNCiAgYWZ0ZXIgd2hpY2ggdG8gcmVydW4gdGhlIHF1ZXVlLiBTbyBJIHRoaW5r IG1vdmluZyB0aGUgcmVydW4gZGVsYXkgKDEwIG1zKQ0KICBjb25zdGFudCBmcm9tIGJsb2NrIGRy aXZlcnMgaW50byB0aGUgY29yZSBpcyBhIHN0ZXAgYmFja3dhcmRzIGluc3RlYWQgb2YgYQ0KICBz dGVwIGZvcndhcmRzLg0KKiBUaGUgcHVycG9zZSBvZiB0aGUgQkxLX01RX1NfU0NIRURfUkVTVEFS VCBmbGFnIGlzIHRvIGRldGVjdCB3aGV0aGVyIG9yIG5vdA0KICBhbnkgb2YgdGhlIHF1ZXVlIHJ1 bnMgdHJpZ2dlcmVkIGJ5IGZyZWVpbmcgYSB0YWcgaGFwcGVuZWQgY29uY3VycmVudGx5LiBJDQog IGRvbid0IHRoaW5rIHRoYXQgdGhlcmUgaXMgYW55IHJlbGF0aW9uc2hpcCBiZXR3ZWVuIHF1ZXVl IHJ1bnMgaGFwcGVuaW5nIGFsbA0KICBvciBub3QgY29uY3VycmVudGx5IGFuZCB0aGUgY2hhbmNl IHRoYXQgZHJpdmVyIHJlc291cmNlcyBiZWNvbWUgYXZhaWxhYmxlLg0KICBTbyBkZWNpZGluZyB3 aGV0aGVyIG9yIG5vdCBhIHF1ZXVlIHNob3VsZCBiZSByZXJ1biBiYXNlZCBvbiB0aGUgdmFsdWUg b2YNCiAgdGhlIEJMS19NUV9TX1NDSEVEX1JFU1RBUlQgZmxhZyBzZWVtcyB3cm9uZyB0byBtZS4N Cg0KPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9zY3NpL3Njc2lfbGliLmMgYi9kcml2ZXJzL3Njc2kv c2NzaV9saWIuYw0KPiBpbmRleCBkOWNhMWRmYWIxNTQuLjU1YmUyNTUwYzU1NSAxMDA2NDQNCj4g LS0tIGEvZHJpdmVycy9zY3NpL3Njc2lfbGliLmMNCj4gKysrIGIvZHJpdmVycy9zY3NpL3Njc2lf bGliLmMNCj4gQEAgLTIwMzAsOSArMjAzMCw5IEBAIHN0YXRpYyBibGtfc3RhdHVzX3Qgc2NzaV9x dWV1ZV9ycShzdHJ1Y3QgYmxrX21xX2h3X2N0eCAqaGN0eCwNCj4gIAljYXNlIEJMS19TVFNfT0s6 DQo+ICAJCWJyZWFrOw0KPiAgCWNhc2UgQkxLX1NUU19SRVNPVVJDRToNCj4gLQkJaWYgKGF0b21p Y19yZWFkKCZzZGV2LT5kZXZpY2VfYnVzeSkgPT0gMCAmJg0KPiAtCQkgICAgIXNjc2lfZGV2aWNl X2Jsb2NrZWQoc2RldikpDQo+IC0JCQlibGtfbXFfZGVsYXlfcnVuX2h3X3F1ZXVlKGhjdHgsIFND U0lfUVVFVUVfREVMQVkpOw0KPiArCQlpZiAoYXRvbWljX3JlYWQoJnNkZXYtPmRldmljZV9idXN5 KSB8fA0KPiArCQkgICAgc2NzaV9kZXZpY2VfYmxvY2tlZChzZGV2KSkNCj4gKwkJCXJldCA9IEJM S19TVFNfREVWX1JFU09VUkNFOw0KPiAgCQlicmVhazsNCj4gIAlkZWZhdWx0Og0KPiAgCQkvKg0K DQpUaGUgYWJvdmUgaW50cm9kdWNlcyB0d28gY2hhbmdlcyB0aGF0IGhhdmUgbm90IGJlZW4gbWVu dGlvbmVkIGluIHRoZQ0KZGVzY3JpcHRpb24gb2YgdGhpcyBwYXRjaDoNCi0gVGhlIHF1ZXVlIHJl cnVubmluZyBkZWxheSBpcyBjaGFuZ2VkIGZyb20gMyBtcyBpbnRvIDEwIG1zLiBXaGVyZSBpcyB0 aGUNCiAgZXhwbGFuYXRpb24gb2YgdGhpcyBjaGFuZ2U/IERvZXMgdGhpcyBjaGFuZ2UgaGF2ZSBh IHBvc2l0aXZlIG9yIG5lZ2F0aXZlDQogIHBlcmZvcm1hbmNlIGltcGFjdD8NCi0gVGhlIGFib3Zl IG1vZGlmaWVzIGEgZ3VhcmFudGVlZCBxdWV1ZSByZXJ1biBpbnRvIGEgcXVldWUgcmVydW4gdGhh dA0KICBtYXkgb3IgbWF5IG5vdCBoYXBwZW4sIGRlcGVuZGluZyBvbiB3aGV0aGVyIG9yIG5vdCBt dWx0aXBsZSB0YWdzIGdldCBmcmVlZA0KICBjb25jdXJyZW50bHkgKHJldHVybiBCTEtfU1RTX0RF Vl9SRVNPVVJDRSkuIFNvcnJ5IGJ1dCBJIHRoaW5rIHRoYXQncyB3cm9uZy4NCg0KQmFydC4=