From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Bart Van Assche To: "snitzer@redhat.com" CC: "linux-block@vger.kernel.org" , "hch@infradead.org" , "martin.petersen@oracle.com" , "ming.lei@redhat.com" , "axboe@kernel.dk" , "linux-scsi@vger.kernel.org" , "jejb@linux.vnet.ibm.com" , "loberman@redhat.com" , "dm-devel@redhat.com" Subject: Re: [PATCH V3] blk-mq: introduce BLK_STS_DEV_RESOURCE Date: Sun, 28 Jan 2018 00:54:38 +0000 Message-ID: <1517100877.3055.23.camel@wdc.com> References: <20180123161613.14214-1-ming.lei@redhat.com> <1516724659.3339.7.camel@sandisk.com> <20180123163717.GE13277@ming.t460p> <1516726653.3339.20.camel@wdc.com> <20180124033109.GA15945@ming.t460p> <20180127190920.GA24759@redhat.com> <1517091161.3055.7.camel@wdc.com> <20180128002356.GA25933@redhat.com> In-Reply-To: <20180128002356.GA25933@redhat.com> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 List-ID: T24gU2F0LCAyMDE4LTAxLTI3IGF0IDE5OjIzIC0wNTAwLCBNaWtlIFNuaXR6ZXIgd3JvdGU6DQo+ IFlvdXIgY29udHJpYnV0aW9ucyBkbyBfbm90XyBtYWtlIHVwIGZvciB5b3VyIGluYWJpbGl0eSB0 byB3b3JrIHdlbGwgd2l0aA0KPiBvdGhlcnMuICBUaXJlc29tZSBkb2Vzbid0IGJlZ2luIHRvIGRl c2NyaWJlIHRoZXNlIGludGVyYWN0aW9ucy4NCj4gDQo+IExpZmUgaXMgdG9vIHNob3J0IHRvIGNv bnRpbnVlIGVuZHVyaW5nIHlvdXIgYnVsbHNoaXQuDQo+IA0KPiBCdXQgZG8gbGV0IHVzIGtub3cg d2hlbiB5b3UgaGF2ZSBzb21ldGhpbmcgb2Ygc3Vic3RhbmNlIHRvIGNvbnRyaWJ1dGUNCj4gKGhp bnQ6IGNvZGUgdGFsa3MpLg0KDQpTb3JyeSBNaWtlIGJ1dCB3aGF0IHlvdSB3cm90ZSBhYm92ZSBp cyBub3Qgb25seSB2ZXJ5IGdyb3NzIGJ1dCBpdCBpcyBhbHNvDQp3cm9uZy4gV2hhdCBJIGRpZCBp biBteSBlLW1haWwgaXMgdG8gaWRlbnRpZnkgdGVjaG5pY2FsIHByb2JsZW1zIGluIE1pbmcncw0K d29yay4gQWRkaXRpb25hbGx5LCBpdCBzZWVtcyBsaWtlIHlvdSBmb3Jnb3QgdGhhdCByZWNlbnRs eSBJIGhlbHBlZCBNaW5nPw0KTXkgcGF0Y2ggImJsay1tcTogQXZvaWQgdGhhdCBibGtfbXFfZGVs YXlfcnVuX2h3X3F1ZXVlKCkgaW50cm9kdWNlcw0KdW5pbnRlbmRlZCBkZWxheXMiIGhhcyBiZWVu IHF1ZXVlZCBieSBKZW5zIGZvciBrZXJuZWwgdjQuMTYgYW5kIHNvbHZlcyBhDQpwcm9ibGVtIHRo YXQgTWluZyBoYXMgYmVlbiB3b3JraW5nIG9uIGZvciB0d28gbW9udGhzIGJ1dCB0aGF0IGhlIHdh cw0KdW5hYmxlIHRvIGNvbWUgdXAgd2l0aCBhIHByb3BlciBmaXggZm9yLiBBZGRpdGlvbmFsbHks IHRoZXJlIGlzIHNvbWV0aGluZw0KdGhhdCB5b3UgaGF2ZSB0byBleHBsYWluOiB0aGUgcGF0Y2gg ImRtIG1wYXRoOiBkb24ndCBjYWxsDQpibGtfbXFfZGVsYXlfcnVuX2h3X3F1ZXVlKCkgaW4gY2Fz ZSBvZiBCTEtfU1RTX1JFU09VUkNFIiB0aGF0IHlvdSBoYXZlDQpxdWV1ZWQgaW4geW91ciB0cmVl IGlzIHdyb25nIGFuZCBpbnRyb2R1Y2VzIGEgcmVncmVzc2lvbg0KKGh0dHBzOi8vZ2l0Lmtlcm5l bC5vcmcvcHViL3NjbS9saW51eC9rZXJuZWwvZ2l0L3NuaXR6ZXIvbGludXguZ2l0L2NvbW1pdC8/ aD1kbS00LjE2JmlkPTMxNmE3OTVhZDM4OGUwYzNjYTYxMzQ1NDg1MWEyODA3OWQ5MTdhOTIpLg0K SSdtIHN1cnByaXNlZCB0aGF0IHlvdSBoYXZlIG5vdCB5ZXQgcmV2ZXJ0ZWQgdGhhdCBwYXRjaD8g QlRXLCBpbiBjYXNlIHlvdQ0Kd291bGQgbm90IHlldCBoYXZlIG5vdGljZWQgbXkgcGF0Y2ggImJs ay1tcTogQXZvaWQgdGhhdA0KYmxrX21xX2RlbGF5X3J1bl9od19xdWV1ZSgpIGludHJvZHVjZXMg dW5pbnRlbmRlZCBkZWxheXMiIGVsaW1pbmF0ZXMgdGhlDQpkZWxheSB5b3UgcmVmZXJyZWQgdG8g aW4gdGhlIGRlc2NyaXB0aW9uIG9mIHRoYXQgcGF0Y2guDQoNCkluIGNhc2UgdGhlIGFib3ZlIHdv dWxkIG5vdCB5ZXQgaGF2ZSBhZGRyZXNzZWQgdGhlIHRlY2huaWNhbCBpc3N1ZShzKSB5b3UNCmFy ZSBmYWNpbmcsIEkgd291bGQgcmVhbGx5IGFwcHJlY2lhdGUgaXQgaWYgeW91IHdvdWxkIHN0b3Ag dXNpbmcgaW5zdWx0cyBhbmQNCmlmIHlvdSBjb3VsZCBleHBsYWluIHdoYXQgdGVjaG5pY2FsIHBy b2JsZW1zIHlvdSBhcmUgZmFjaW5nLiBJc24ndCB0aGF0IHdoYXQNCnRoZSBMaW51eCBrZXJuZWwg aXMgYWJvdXQsIG5hbWVseSBhYm91dCBjb2xsYWJvcmF0aW9uIGJldHdlZW4gdGVjaG5pY2FsDQpw ZW9wbGUgZnJvbSBkaWZmZXJlbnQgb3JnYW5pemF0aW9ucz8gSXNuJ3QgdGhhdCB3aGF0IG1hZGUg dGhlIExpbnV4IGtlcm5lbA0KZ3JlYXQ/DQoNCkJhcnQu