From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Bart Van Assche To: "ming.lei@redhat.com" CC: "hch@lst.de" , "hare@suse.com" , "jthumshirn@suse.de" , "linux-block@vger.kernel.org" , "oleksandr@natalenko.name" , "martin.petersen@oracle.com" , "axboe@kernel.dk" Subject: Re: [PATCH v4 5/7] scsi: Reduce suspend latency Date: Wed, 27 Sep 2017 03:43:11 +0000 Message-ID: <1506481279.2822.5.camel@wdc.com> References: <20170925202924.16603-1-bart.vanassche@wdc.com> <20170925202924.16603-6-bart.vanassche@wdc.com> <20170926222322.GA8050@ming.t460p> In-Reply-To: <20170926222322.GA8050@ming.t460p> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 List-ID: T24gV2VkLCAyMDE3LTA5LTI3IGF0IDA2OjIzICswODAwLCBNaW5nIExlaSB3cm90ZToNCj4gICAg ICAgICBtdXRleF9sb2NrKCZzZGV2LT5zdGF0ZV9tdXRleCk7DQo+ICAgICAgICAgZXJyID0gc2Nz aV9kZXZpY2Vfc2V0X3N0YXRlKHNkZXYsIFNERVZfUVVJRVNDRSk7DQo+ICAgICAgICAgaWYgKGVy ciA9PSAwKQ0KPiAgICAgICAgICAgICAgICAgYmxrX3NldF9wcmVlbXB0X29ubHkocSwgdHJ1ZSk7 DQo+ICAgICAgICAgbXV0ZXhfdW5sb2NrKCZzZGV2LT5zdGF0ZV9tdXRleCk7DQo+IA0KPiAgICAg ICAgIGlmIChlcnIpDQo+ICAgICAgICAgICAgICAgICByZXR1cm4gZXJyOw0KPiANCj4gICAgICAg ICBibGtfbXFfZnJlZXplX3F1ZXVlKHEpOw0KPiAgICAgICAgIGJsa19tcV91bmZyZWV6ZV9xdWV1 ZShxKTsNCj4gDQo+IEFueSByZXF1ZXN0cyBhbGxvY2F0ZWQgYmVmb3JlIHNjc2lfZGV2aWNlX3Nl dF9zdGF0ZSgpIGFuZA0KPiBkaXNwYXRjaGVkIGFmdGVyIHNjc2lfZGV2aWNlX3NldF9zdGF0ZSgp IGNhbid0IGJlIGRyYWluZWQgdXANCj4gYW55IG1vcmUsIHRoZW4gYmxrX21xX2ZyZWV6ZV9xdWV1 ZSgpIHdpbGwgd2FpdCBmb3JldmVyIGZvciB0aGUNCj4gZHJhaW4gdXAsIHNvIG5vdCBvbmx5IHRo aXMgcGF0Y2hzZXQgY2FuJ3QgZml4IHRoZSBjdXJyZW50IHF1aWVzY2UNCj4gaXNzdWUsIGJ1dCBh bHNvIGludHJvZHVjZXMgbmV3IEkvTyBoYW5nIGluIHNjc2lfZGV2aWNlX3F1aWVzY2UoKS4NCg0K VGhhdCdzIGEgZ29vZCBjYXRjaCwgYnV0IGZvcnR1bmF0ZWx5IHRoaXMgaXMgdmVyeSBlYXN5IHRv IGZpeDogbW92ZSB0aGUNCmJsa19tcV9mcmVlemVfcXVldWUoKSBjYWxsIGJlZm9yZSB0aGUgbXV0 ZXhfbG9jaygpIGFuZCBzY3NpX2RldmljZV9zZXRfc3RhdGUoKQ0KY2FsbHMuIFRoZSBlcnJvciBw YXRoIHdpbGwgYWxzbyBuZWVkIHNvbWUgYWRqdXN0bWVudC4NCg0KQmFydC4=