From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from esa5.hgst.iphmx.com ([216.71.153.144]:31796 "EHLO esa5.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751737AbdDAXaF (ORCPT ); Sat, 1 Apr 2017 19:30:05 -0400 From: Bart Van Assche To: "linux-kernel@vger.kernel.org" , "osandov@osandov.com" , "linux-block@vger.kernel.org" , "axboe@fb.com" CC: "kernel-team@fb.com" Subject: Re: [PATCH] blk-mq: add random early detection I/O scheduler Date: Sat, 1 Apr 2017 23:29:55 +0000 Message-ID: <1491089381.9734.2.camel@sandisk.com> References: 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 T24gU2F0LCAyMDE3LTA0LTAxIGF0IDE2OjA3IC0wNjAwLCBKZW5zIEF4Ym9lIHdyb3RlOg0KPiBP biAwNC8wMS8yMDE3IDAxOjU1IFBNLCBPbWFyIFNhbmRvdmFsIHdyb3RlOg0KPiA+IEZyb206IE9t YXIgU2FuZG92YWwgPG9zYW5kb3ZAZmIuY29tPg0KPiA+IA0KPiA+IFRoaXMgcGF0Y2ggaW50cm9k dWNlcyBhIG5ldyBJL08gc2NoZWR1bGVyIGJhc2VkIG9uIHRoZSBjbGFzc2ljIHJhbmRvbQ0KPiA+ IGVhcmx5IGRldGVjdGlvbiBhY3RpdmUgcXVldWUgbWFuYWdlbWVudCBhbGdvcml0aG0gWzFdLiBS YW5kb20gZWFybHkNCj4gPiBkZXRlY3Rpb24gaXMgb25lIG9mIHRoZSBzaW1wbGVzdCBhbmQgbW9z dCBzdHVkaWVkIEFRTSBhbGdvcml0aG1zIGZvcg0KPiA+IG5ldHdvcmtpbmcsIGJ1dCB1bnRpbCBu b3csIGl0IGhhc24ndCBiZWVuIGFwcGxpZWQgdG8gZGlzayBJL08NCj4gPiBzY2hlZHVsaW5nLg0K PiA+IA0KPiA+IFdoZW4gYXBwbGllZCB0byBuZXR3b3JrIHJvdXRlcnMsIFJFRCBwcm9iYWJpbGlz dGljYWxseSBlaXRoZXIgbWFya3MNCj4gPiBwYWNrZXRzIHdpdGggRUNOIG9yIGRyb3BzIHRoZW0s IGRlcGVuZGluZyBvbiB0aGUgY29uZmlndXJhdGlvbi4gV2hlbg0KPiA+IGRlYWxpbmcgd2l0aCBk aXNrIEkvTywgUE9TSVggZG9lcyBub3QgaGF2ZSBhbnkgbWVjaGFuaXNtIHdpdGggd2hpY2ggdG8N Cj4gPiBub3RpZnkgdGhlIGNhbGxlciB0aGF0IHRoZSBkaXNrIGlzIGNvbmdlc3RlZCwgc28gd2Ug aW5zdGVhZCBvbmx5IHByb3ZpZGUNCj4gPiB0aGUgbGF0dGVyIHN0cmF0ZWd5LiBJbmNsdWRlZCBp biB0aGlzIHBhdGNoIGlzIGEgbWlub3IgY2hhbmdlIHRvIHRoZQ0KPiA+IGJsay1tcSB0byBzdXBw b3J0IHRoaXMuDQo+IA0KPiBUaGlzIGlzIGdyZWF0IHdvcmsuIElmIHdlIGNvbWJpbmUgdGhpcyB3 aXRoIGEgdGhpbiBwcm92aXNpb25pbmcgdGFyZ2V0LA0KPiB3ZSBjYW4gZXZlbiB1c2UgdGhpcyB0 byBzYXZlIHNwYWNlIG9uIHRoZSBiYWNrZW5kLiBCZXR0ZXIgbGF0ZW5jaWVzLA0KPiBBTkQgbG93 ZXIgZGlzayB1dGlsaXphdGlvbi4NCj4gDQo+IEknbSB0ZW1wdGVkIHRvIGp1c3QgcXVldWUgdGhp cyB1cCBmb3IgdGhpcyBjeWNsZSBhbmQgbWFrZSBpdCB0aGUgZGVmYXVsdC4NCg0KSGVsbG8gSmVu cywNCg0KRGlkIHlvdSBtZWFuIG1ha2luZyB0aGlzIHRoZSBkZWZhdWx0IHNjaGVkdWxlciBmb3Ig U1NEcyBvbmx5IG9yIGZvciBhbGwgdHlwZXMNCm9mIGJsb2NrIGRldmljZXM/IE91ciAoV2VzdGVy biBEaWdpdGFsKSBleHBlcmllbmNlIGlzIHRoYXQgYW55IEkvTyBzY2hlZHVsZXINCnRoYXQgbGlt aXRzIHRoZSBxdWV1ZSBkZXB0aCByZWR1Y2VzIHRocm91Z2hwdXQgZm9yIGF0IGxlYXN0IGRhdGEt Y2VudGVyIHN0eWxlDQp3b3JrbG9hZHMgd2hlbiB1c2luZyBoYXJkIGRpc2tzLiBUaGlzIGlzIHdo eSBBZGFtIGlzIHdvcmtpbmcgb24gaW1wcm92aW5nIEkvTw0KcHJpb3JpdHkgc3VwcG9ydCBmb3Ig dGhlIExpbnV4IGJsb2NrIGxheWVyLiBUaGF0IGFwcHJvYWNoIG5hbWVseSBhbGxvd3MgdG8NCnJl ZHVjZSBsYXRlbmN5IG9mIGNlcnRhaW4gcmVxdWVzdHMgd2l0aG91dCBzaWduaWZpY2FudGx5IGlt cGFjdGluZyBhdmVyYWdlDQpsYXRlbmN5IGFuZCB0aHJvdWdocHV0Lg0KDQpCYXJ0Lg==