From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from esa5.hgst.iphmx.com ([216.71.153.144]:23856 "EHLO esa5.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752451AbdHVUKU (ORCPT ); Tue, 22 Aug 2017 16:10:20 -0400 From: Bart Van Assche To: "hch@infradead.org" , "linux-block@vger.kernel.org" , "axboe@fb.com" , "ming.lei@redhat.com" CC: "loberman@redhat.com" Subject: Re: [PATCH V2 06/20] blk-mq-sched: don't dequeue request until all in ->dispatch are flushed Date: Tue, 22 Aug 2017 20:09:32 +0000 Message-ID: <1503432571.2508.15.camel@wdc.com> References: <20170805065705.12989-1-ming.lei@redhat.com> <20170805065705.12989-7-ming.lei@redhat.com> In-Reply-To: <20170805065705.12989-7-ming.lei@redhat.com> 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 T24gU2F0LCAyMDE3LTA4LTA1IGF0IDE0OjU2ICswODAwLCBNaW5nIExlaSB3cm90ZToNCj4gKwkv Kg0KPiArCSAqIFdoZXJldmVyIERJU1BBVENIX0JVU1kgaXMgc2V0LCBibGtfbXFfcnVuX2h3X3F1 ZXVlKCkNCj4gKwkgKiB3aWxsIGJlIHJ1biB0byB0cnkgdG8gbWFrZSBwcm9ncmVzcywgc28gaXQg aXMgYWx3YXlzDQo+ICsJICogc2FmZSB0byBjaGVjayB0aGUgc3RhdGUgaGVyZS4NCj4gKwkgKi8N Cj4gKwlpZiAodGVzdF9iaXQoQkxLX01RX1NfRElTUEFUQ0hfQlVTWSwgJmhjdHgtPnN0YXRlKSkN Cj4gKwkJcmV0dXJuOw0KDQpUaGUgY29tbWVudCBhYm92ZSB0ZXN0X2JpdCgpIGlzIHVzZWZ1bCBi dXQgZG9lcyBub3QgZXhwbGFpbiB0aGUgcHVycG9zZSBvZg0KdGhlIGVhcmx5IHJldHVybi4gSXMg dGhlIHB1cnBvc2Ugb2YgdGhlIGVhcmx5IHJldHVybiBwZXJoYXBzIHRvIHNlcmlhbGl6ZQ0KYmxr X21xX3NjaGVkX2Rpc3BhdGNoX3JlcXVlc3RzKCkgY2FsbHM/IElmIHNvLCBwbGVhc2UgbWVudGlv biB0aGlzLg0KDQpUaGFua3MsDQoNCkJhcnQu