From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B739C432C0 for ; Thu, 28 Nov 2019 08:12:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 16F772176D for ; Thu, 28 Nov 2019 08:12:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727469AbfK1IMq (ORCPT ); Thu, 28 Nov 2019 03:12:46 -0500 Received: from esa3.mentor.iphmx.com ([68.232.137.180]:24205 "EHLO esa3.mentor.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727042AbfK1IMq (ORCPT ); Thu, 28 Nov 2019 03:12:46 -0500 IronPort-SDR: gUB2kUt1+pRxXifoPt4vBV2HzPVvUbyzapN3PI1XX0tf6GBUfMaYKYwbEAHjvhz6r+fmN52iLT Ip8+lvIp45Vrw0S2/BCloSpI6eLTs8GD2EdEduuWQesnS66oq4dBDPwJdw393q082VBo25xVZr h6+UzRT79b0HtxoktCYqya9pmyrC56YFLM9xx3QPD9dgPzuf47zrMYDxqPH8SPXUlj8fNCneng JnXVfRoJrX5NDaGUkFdr7Ndb886EU4Aq4AA9spta13V3yzYKJnFn0BqaZAr/3Dk49VcLxXQZMs DAM= X-IronPort-AV: E=Sophos;i="5.69,252,1571731200"; d="scan'208";a="43594070" Received: from orw-gwy-02-in.mentorg.com ([192.94.38.167]) by esa3.mentor.iphmx.com with ESMTP; 28 Nov 2019 00:12:45 -0800 IronPort-SDR: BC9926NUvcN8903q6aV7B+jT7cyDcgtEMEfhpPSOdKqIjmUDWFwal3A/It1NGkhUBk9+GoDqlt AEB1SQtVBgs+90iLSlSPkmzrcSuMviSDEPlpFUXkScbL5tUiH2++mKHXUfSP5Cmq2UPgibwHMx vbwgrXrdurVbVpsuU6cOq6DOeC5I1UUDBUOGg6jNzeOXqdiUVhNvqhjqe8l6ePXKSfEnlW2dyf Mqh+sIV2O7xwR/gqNM4r6GRwLL5rEUyKfS/YX6Xv1eoy8QvzPRpMGezRbRjj+W+pDJrYV2LxIp 1GU= From: "Schmid, Carsten" To: Andrea Vai , Finn Thain CC: Ming Lei , Damien Le Moal , Alan Stern , Jens Axboe , Johannes Thumshirn , USB list , SCSI development list , Himanshu Madhani , Hannes Reinecke , Omar Sandoval , "Martin K. Petersen" , Greg KH , Hans Holmberg , Kernel development list Subject: AW: AW: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6 Thread-Topic: AW: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6 Thread-Index: AQHVV3qcHF7jYFXqX02A+/ZaS0pzdqeAjBMAgANe+wCAFDitAIAAzHgAgACKv4CAAl41gIAAaSkAgAAFKQCAAEsvAIAABMGAgAA8WICAAIDlgIAAV4SAgAEWB4CAAIOAUIABi16AgAACn+A= Date: Thu, 28 Nov 2019 08:12:39 +0000 Message-ID: References: <20191109222828.GA30568@ming.t460p> <20191123072726.GC25356@ming.t460p> <20191125035437.GA3806@ming.t460p> <20191125102928.GA20489@ming.t460p> <20191125151535.GA8044@ming.t460p> <0876e232feace900735ac90d27136288b54dafe1.camel@unipv.it> <20191126023253.GA24501@ming.t460p> <0598fe2754bf0717d81f7e72d3e9b3230c608cc6.camel@unipv.it> In-Reply-To: Accept-Language: de-DE, en-IE, en-US Content-Language: de-DE X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [137.202.0.90] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org PiA+ID4gVGhlIHNoZWVyIHZvbHVtZSBvZiB0ZXN0aW5nIChwcm9iYWJseSBzb21lIHRlcmFieXRl cyBieSBub3cpIHdvdWxkDQo+ID4gPiBleGVyY2lzZSB0aGUgd2VhciBsZXZlbGluZyBhbGdvcml0 aG0gaW4gdGhlIEZUTC4NCj4gPiA+DQo+ID4gQnV0IHdpdGggIm9sZCBrZXJuZWwiIHRoZSBjb3B5 IG9wZXJhdGlvbiBzdGlsbCBpcyAiZmFzdCIsIGFzIGZhciBhcw0KPiA+IGkgdW5kZXJzdG9vZC4N Cj4gPiBJZiBGVEwgKGUuZy4gd2VhciBsZXZlbGluZykgd291bGQgc2xvdyBkb3duLCB3ZSB3b3Vs ZCBzZWUgdGhhdCBhbHNvDQo+ID4gaW4NCj4gPiB0aGUgb2xkIGtlcm5lbCwgcmlnaHQ/DQo+ID4N Cj4gPiBBbmRyZWEsIGNhbiB5b3UgY29uZmlybSB0aGF0IHRoZSBzYW1lIGRldmljZSB1c2VkIHdp dGggdGhlIG9sZCBmYXN0DQo+ID4ga2VybmVsIGlzIHN0aWxsIGZhc3QgdG9kYXk/DQo+IA0KPiBZ ZXMsIGl0IGlzIHN0aWxsIGZhc3QuIEp1c3QgcmFuIGEgMTAwIHRyaWFscyB0ZXN0IGFuZCBnb3Qg YW4gYXZlcmFnZQ0KPiBvZiA3MCBzZWNvbmRzIHdpdGggc3RhbmRhcmQgZGV2aWF0aW9uID0gNiBz ZWNvbmRzLCBhbGlnbmVkIHdpdGggdGhlDQo+IHBhc3QgdmFsdWVzIG9mIHRoZSBzYW1lIGtlcm5l bC4NCj4gDQo+IFRoYW5rcywNCj4gQW5kcmVhDQpJIGhhdmUgYmVlbiBpbnZvbHZlZCBpbiBzZXZl cmFsIGJlbmNobWFya2luZ3Mgb2YgZmxhc2ggZGV2aWNlcyBpbiB0aGUgcGFzdC4NClNvIHdoYXQg d2Ugc2VlIGhlcmUgaXMgZGVmaW5pdGVseSBub3QgYSBkZXZpY2UgaXNzdWUgcmVnYXJkaW5nIHdl YXIgbGV2ZWxpbmcuDQoNCkkgd2FudGVkIHRvIHByZXZlbnQgYWxsIG9mIHlvdSBnb2luZyBpbnRv IHRoZSB3cm9uZyBkaXJlY3Rpb24sIHRoYXQncyB3aHkNCmkgd2FudGVkIEFuZHJlYSB0byBjb25m aXJtIHRoYXQgaXQncyBub3QgYSBtYXR0ZXIgb2YgdGhlIGZsYXNoIGRldmljZS4NCg0KVGhlcmUg YXJlIHNvIG11Y2ggaXRlbXMgaW52b2x2ZWQgaW50byBiZW5jaG1hcmtpbmcgZmxhc2ggZGV2aWNl cy4NCkJ1dCBBbmRyZWEncyBvYnNlcnZhdGlvbnMgd2l0aCBmYWN0b3JzIG9mIDEwLTMwIHRpbWVz IHNsb3cgZG93bg0KaSBoYXZlIG5ldmVyIHNlZW4gYmVmb3JlLg0KDQpJIGFzc3VtZSB0aGUgb25s eSB0aGluZyB0aGF0IHlvdSBjaGFuZ2UgYmV0d2VlbiB0aGUgYmVuY2htYXJrcw0KaXMgdGhlIGtl cm5lbCAoYW5kIHRoZSBtb2R1bGVzLCBvZiBjb3Vyc2UpLCByaWdodCwgQW5kcmVhPw0KVGhlbiB3 ZSBjYW4gcnVsZSBvdXQgY2FjaGUgc2V0dGluZ3Mgd2hpY2ggbWFzc2l2ZWx5IGNhbiBpbXBhY3QN CmJlbmNobWFya3MuDQoNClRoZSBvbmx5IHRoaW5nIHRoYXQgbWFrZXMgc2Vuc2UgZnJvbSBteSBQ T1YgaXM6DQotIGNvbGxlY3QgdHJhY2VzIHdpdGggdGhlIGtlcm5lbCBiZWZvcmUgbWVudGlvbmVk IGNvbW1pdCAoZmFzdCkNCi0gYXBwbHkgcGF0Y2ggaW4gZG91YnQNCi0gYWdhaW4gY29sbGVjdCB0 cmFjZXMgKHNsb3cpDQotIGNvbXBhcmUgdGhlIHRyYWNlcw0KDQpUaGVuIHdlIHNob3VsZCBiZSBh YmxlIHRvIHNlZSB0aGUgZGlmZmVyZW5jZShzKS4NClVuZm9ydHVuYXRlbHkgaSdtIG5vdCBhbiBl eHBlcnQgb24gdGhlIFNDU0kgYW5kIFVTQiBrZXJuZWwgc3R1ZmYNCmludm9sdmVkIGhlcmUuIEVs c2UgaSB3b3VsZCB0cnkgdG8gdW5kZXJzdGFuZCB3aGF0IGhhcHBlbnMgYW5kDQpnaXZlIHlvdSBz b21lIGhpbnRzLg0KDQpCUg0KQ2Fyc3Rlbg0K