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-block@vger.kernel.org" , "axboe@kernel.dk" Subject: Re: [RFC PATCH] blk-mq: Fix lost request during timeout Date: Mon, 18 Sep 2017 22:07:58 +0000 Message-ID: <1505772477.12701.6.camel@wdc.com> References: <1505772186-4601-1-git-send-email-keith.busch@intel.com> In-Reply-To: <1505772186-4601-1-git-send-email-keith.busch@intel.com> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 List-ID: T24gTW9uLCAyMDE3LTA5LTE4IGF0IDE4OjAzIC0wNDAwLCBLZWl0aCBCdXNjaCB3cm90ZToNCj4g SSB0aGluayB3ZSd2ZSBhbHdheXMga25vd24gaXQncyBwb3NzaWJsZSB0byBsb3NlIGEgcmVxdWVz dCBkdXJpbmcgdGltZW91dA0KPiBoYW5kbGluZywgYnV0IGp1c3QgYWNjZXB0ZWQgdGhhdCBwb3Nz aWJpbGl0eS4gSXQgc2VlbXMgdG8gYmUgY2F1c2luZw0KPiBwcm9ibGVtcywgdGhvdWdoLCBsZWFk aW5nIHRvIHVubmVjZXNzYXJ5IGVycm9yIGVzY2FsYXRpb24gYW5kIElPIGZhaWx1cmVzLg0KPiAN Cj4gVGhlIHBvc3NpYmxpdHkgYXJpc2VzIHdoZW4gdGhlIGJsb2NrIGxheWVyIG1hcmtzIHRoZSBy ZXF1ZXN0IGNvbXBsZXRlDQo+IHByaW9yIHRvIHJ1bm5pbmcgdGhlIHRpbWVvdXQgaGFuZGxlci4g SWYgdGhhdCByZXF1ZXN0IGhhcHBlbnMgdG8gY29tcGxldGUNCj4gd2hpbGUgdGhlIGhhbmRsZXIg aXMgcnVubmluZywgdGhlIHJlcXVlc3Qgd2lsbCBiZSBsb3N0LCBpbmV2aXRhYmx5DQo+IHRyaWdn ZXJpbmcgYSBzZWNvbmQgdGltZW91dC4NCj4gDQo+IFRoaXMgcGF0Y2ggYXR0ZW1wdHMgdG8gc2hv cnRlbiB0aGUgd2luZG93IGZvciB0aGlzIHJhY2UgY29uZGl0aW9uIGJ5DQo+IGNsZWFyaW5nIHRo ZSBzdGFydGVkIGZsYWcgd2hlbiB0aGUgZHJpdmVyIGNvbXBsZXRlcyBhIHJlcXVlc3QuIFRoZSBi bG9jaw0KPiBsYXllcidzIHRpbWVvdXQgaGFuZGxlciB3aWxsIHRoZW4gY29tcGxldGUgdGhlIGNv bW1hbmQgaWYgaXQgb2JzZXJ2ZXMNCj4gdGhlIHN0YXJ0ZWQgZmxhZyBpcyBubyBsb25nZXIgc2V0 Lg0KPiANCj4gTm90ZSBpdCdzIHBvc3NpYmxlIHRvIGxvc2UgdGhlIGNvbW1hbmQgZXZlbiB3aXRo IHRoaXMgcGF0Y2guIEl0J3MganVzdA0KPiBsZXNzIGxpa2VseSB0byBoYXBwZW4uDQoNCkhlbGxv IEtlaXRoLA0KDQpBcmUgeW91IHN1cmUgdGhlIHJvb3QgY2F1c2Ugb2YgdGhpcyByYWNlIGNvbmRp dGlvbiBpcyBpbiB0aGUgYmxrLW1xIGNvcmU/DQpJJ3ZlIG5ldmVyIG9ic2VydmVkIHN1Y2ggYmVo YXZpb3IgaW4gYW55IG9mIG15IG51bWVyb3VzIHNjc2ktbXEgdGVzdHMgKHdoaWNoDQp0cmlnZ2Vy IHRpbWVvdXRzKS4gQXJlIHlvdSBzdXJlIHRoZSByYWNlIHlvdSBvYnNlcnZlZCBpcyBub3QgY2F1 c2VkIGJ5IGENCmJsa19tcV9yZWluaXRfdGFnc2V0KCkgY2FsbCwgYSBmdW5jdGlvbiB0aGF0IGlz IG9ubHkgdXNlZCBieSB0aGUgTlZNZSBkcml2ZXINCmFuZCBub3QgYnkgYW55IG90aGVyIGJsb2Nr IGRyaXZlcj8NCg0KQmFydC4=