From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from esa4.hgst.iphmx.com ([216.71.154.42]:36542 "EHLO esa4.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751496AbeCMRYL (ORCPT ); Tue, 13 Mar 2018 13:24:11 -0400 From: Bart Van Assche To: "linux-block@vger.kernel.org" , "jaco@uls.co.za" CC: "pieterk@uls.co.za" Subject: Re: disk-io lockup in 4.14.13 kernel Date: Tue, 13 Mar 2018 17:24:07 +0000 Message-ID: <1520961846.2638.25.camel@wdc.com> References: <16bae006-371f-1eea-56b6-8668249d870b@uls.co.za> <828103f7-7550-16a3-d482-8953adc5a234@wdc.com> <257ceeb7-f466-d13d-8818-829759eda587@uls.co.za> <1520737695.8740.4.camel@wdc.com> <6e2ef6eb-a610-8c52-52d8-a35e4d3f36c9@uls.co.za> <1520744455.8740.9.camel@wdc.com> <0d5c21c2-4fea-5870-e971-f90556fb4141@uls.co.za> <1520950225.2921.0.camel@wdc.com> <1520953606.2638.5.camel@wdc.com> In-Reply-To: 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 T24gVHVlLCAyMDE4LTAzLTEzIGF0IDE5OjE2ICswMjAwLCBKYWNvIEtyb29uIHdyb3RlOg0KPiBU aGUgc2VydmVyIGluIHF1ZXN0aW9uIGlzIHRoZSBkZXN0aW5hdGlvbiBvZiAgbnVtZXJvdXMgcnN5 bmMvc3NoIGNhc2VzDQo+ICh1c2VkIHByaW1hcmlseSBmb3IgYmFja3VwcykgYW5kIGlzIG5vdCBp bnRlbmRlZCBhcyBhIHJlYWwtdGltZSBzeXN0ZW0uDQo+IEknbSBoYXBweSB0byBlbmFibGUgdGhl IG9wdGlvbnMgYmVsb3cgdGhhdCB5b3Ugd291bGQgaW5kaWNhdGUgd291bGQgYmUNCj4gaGVscGZ1 bCBpbiBwaW5wb2ludGluZyB0aGUgcHJvYmxlbSAoYXNzdW1pbmcgd2UncmUgbm90IGxvb2tpbmcg YXQgYSA4eA0KPiBtb3JlIENQVSByZXF1aXJlZCB0eXBlIG9mIGRlZ3JhZGluZyBhcyBJJ3ZlIHJl Y2VudGx5IHNlZW4gd2l0aCBhc3Rlcmlzaw0KPiBsb2NrIGRlYnVnZ2luZyBlbmFibGVkKS4gSSd2 ZSBtYXJrZWQgaW4gYm9sZCBiZWxvdyB3aGF0IEkgYXNzdW1lIHdvdWxkDQo+IGJlIGhlbHBmdWwu ICBJZiB5b3UgZG9uJ3QgbWluZCBjb25maXJtaW5nIGZvciBtZSBJJ2xsIGVuYWJsZSBhbmQNCj4g c2NoZWR1bGUgYSByZWJvb3QuDQoNCkhlbGxvIEphY28sDQoNCk15IHJlY29tbWVuZGF0aW9uIGlz IHRvIHdhaXQgdW50aWwgdGhlIG1wdDNzYXMgbWFpbnRhaW5lcnMgcG9zdCBhIGZpeA0KZm9yIHdo YXQgSSByZXBvcnRlZCB5ZXN0ZXJkYXkgb24gdGhlIGxpbnV4LXNjc2kgbWFpbGluZyBsaXN0LiBF bmFibGluZw0KQ09ORklHX0RFQlVHX0FUT01JQ19TTEVFUCBoYXMgbmFtZWx5IGEgdmVyeSBhbm5v eWluZyBjb25zZXF1ZW5jZSBmb3IgdGhlDQptcHQzc2FzIGRyaXZlcjogdGhlIGZpcnN0IHByb2Nl c3MgdGhhdCBoaXRzIHRoZSAic2xlZXAgaW4gYXRvbWljIGNvbnRleHQiDQpidWcgZ2V0cyBraWxs ZWQuIEkgZG9uJ3QgdGhpbmsgdGhhdCB5b3Ugd2FudCB0aGlzIGtpbmQgb2YgYmVoYXZpb3Igb24g YQ0KcHJvZHVjdGlvbiBzZXR1cC4NCg0KQmFydC4NCg0KDQoNCg0K