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=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 B7B80C4CEC9 for ; Fri, 20 Sep 2019 07:03:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8CB3B206C2 for ; Fri, 20 Sep 2019 07:03:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=unipv-it.20150623.gappssmtp.com header.i=@unipv-it.20150623.gappssmtp.com header.b="vXH5kAAX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2394932AbfITHDi (ORCPT ); Fri, 20 Sep 2019 03:03:38 -0400 Received: from mail-wr1-f48.google.com ([209.85.221.48]:38078 "EHLO mail-wr1-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2394945AbfITHDh (ORCPT ); Fri, 20 Sep 2019 03:03:37 -0400 Received: by mail-wr1-f48.google.com with SMTP id l11so5579127wrx.5 for ; Fri, 20 Sep 2019 00:03:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=unipv-it.20150623.gappssmtp.com; s=20150623; h=message-id:subject:from:to:cc:date:in-reply-to:references :user-agent:mime-version:content-transfer-encoding; bh=iPb11oBM4mXymFs4UUGvQ+4qCrRBdbOKjtlw3sgl95E=; b=vXH5kAAX82UGTz+MibXvrnLawKTxDfMWSdnpdfZBHXooZKTd9IPmuU6vDFC99SCQzf XJv/8sA6CkmKXBt0DcK1pq/NinQJfQdjXrmaTGlDsIlnOQgMdOykNegVIQZrvLBRSs3G HAWanLAYYDUlrVGm1MooqH1Vqig3yYYVvbPmlIzpb77lM62Fp4+IZ3ACuUab7Ws4lTti X3j3RAZ+L1jceTG2oasvZCGZljm+RnG5hLJWIrudPUr1VXqLWGoSHhUahmH7FMsG1f7k FjjqQBEVaiBAvZaPqJTfLHhDarGdwJA2N+VeMxT6n8cvnp2r3De+D6WuXLSoxvds8clv qtZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:user-agent:mime-version:content-transfer-encoding; bh=iPb11oBM4mXymFs4UUGvQ+4qCrRBdbOKjtlw3sgl95E=; b=HWujeGD2RjcwWLRyYN0xZTE52qpn2MlvHWPdIN0klg+tlCP8hJAb/XkoX20+FUxVEM ktE7U07jsTECpSNEV0I0oZAAobwOWZdKud1ShK6id0LtsKzYZRepHNhY/VbwTlyzK2Iv egtq5qdps0pSqF2GUeiz9aFc8LWAVKQP29QrhULeE6Fh1xoEjI5GlAm6Rlo99nvCpUV4 PCEsZiDayYLJEtBph6qGMxPaNcpTHoA8mOWaT0f9bLoLdU6BRg6FdlG+bYXDoaKmmZAc p6ZVR77fi7LM6EMcdxfi/0SKX9847b5lcSJPlKpdpiMtoUt+PlPq7MtbW74RFY49zf+b rDcw== X-Gm-Message-State: APjAAAVBU01FrTK34QZdAf3fRs0XC61zFw4NuOXGEZ5wTlgRJ6LOLsEc dng5hbbiKocFH9/TIAriVWh3Hg== X-Google-Smtp-Source: APXvYqxECgCqPApWMHtyOa4f71NdXx5G1agL/X1wWGLsI39s8kKDaXojKuC8fWTB1X4KO8/r+o+unQ== X-Received: by 2002:adf:e4ce:: with SMTP id v14mr10751214wrm.15.1568963015062; Fri, 20 Sep 2019 00:03:35 -0700 (PDT) Received: from angus.unipv.it (angus.unipv.it. [193.206.67.163]) by smtp.gmail.com with ESMTPSA id v7sm1093401wru.87.2019.09.20.00.03.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Sep 2019 00:03:33 -0700 (PDT) Message-ID: <981fc98a9995eaee5f65709cacc46f13a2c603ad.camel@unipv.it> Subject: Re: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6 From: Andrea Vai To: Damien Le Moal , Alan Stern Cc: Johannes Thumshirn , Jens Axboe , USB list , SCSI development list , Himanshu Madhani , Hannes Reinecke , Ming Lei , Omar Sandoval , "Martin K. Petersen" , Greg KH , Hans Holmberg Date: Fri, 20 Sep 2019 09:03:28 +0200 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.32.4 (3.32.4-1.fc30) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Il giorno gio, 19/09/2019 alle 14.14 +0000, Damien Le Moal ha scritto: > On 2019/09/19 16:01, Alan Stern wrote: > [...] > > No doubt Andrea will be happy to test your fix when it's ready. Yes, of course. > > Hannes posted an RFC series: > > https://www.spinics.net/lists/linux-scsi/msg133848.html > > Andrea can try it. Ok, but I would need some instructions please, because I am not able to understand how to "try it". Sorry for that. > Andrea, > > What is the device in question ? Is it a USB external HDD ? SSD ? > Flash key ? It is a USB flash key (a.k.a. pendrive, flash drive, etc.): ID 0951:1666 Kingston Technology DataTraveler 100 G3/G4/SE9 G2 Thanks, and bye Andrea