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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 DD5FFC04AAF for ; Tue, 21 May 2019 14:10:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B80C2217D7 for ; Tue, 21 May 2019 14:10:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728342AbfEUOKp (ORCPT ); Tue, 21 May 2019 10:10:45 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:43613 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727624AbfEUOKp (ORCPT ); Tue, 21 May 2019 10:10:45 -0400 Received: from mail-wm1-f72.google.com ([209.85.128.72]) by youngberry.canonical.com with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.76) (envelope-from ) id 1hT5TX-0000qE-Vb for linux-block@vger.kernel.org; Tue, 21 May 2019 14:10:44 +0000 Received: by mail-wm1-f72.google.com with SMTP id 9so824793wmi.7 for ; Tue, 21 May 2019 07:10:43 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=3og88PFnyLDuGAX9qCeRLfhcIKeYUgXunXJTzgjv6aI=; b=MLii7cEgZs/1zAsIYrYYWhQ1aIt0b1iiANWawb+lo1dSsOMMynB8YtqyWQbLjb4SXe xugnOg1+iTwl8biV0WQ35wF6NZMGopfTZvbnBSI3N60Duk1aIW+gTMW+g1V8wzSbAWrI y22t5W+Lyj0PGtDsNMBls9MAUpDTsaBAxbyZs+8Phb33M9lkrycG0i25vaWscbqpTBHd hDbzTMkU/zeNfZ8mnC2O7waYGcuDsQ0kNPvW7UV41QQkwt95mPZmh+nPNwfrxo0h9esL 5Y0NeHn0ZcXRjIAcVizY+44TF0n85UgQfXdIqtZjD7aCDBlXC4zgHz9xxchSdtam08YB jERA== X-Gm-Message-State: APjAAAV/fIaQElgQTMYUJl7fqxUlQ14mw2dVxWbjGorXPMNMhrTy4zBI D2aG4h2de5lemV+rwIDyMfkdfj9MBe6aus9D4nC9Ku5xnKb2ieVYg9T8UpeO91YcmBtF+uMtUX/ MRrrkcVtkK1TY2DEM8B1tze/Dpjulo79mhN9nSmYG9Cc3cCUdugwQqVc9 X-Received: by 2002:a7b:cd0e:: with SMTP id f14mr3465094wmj.127.1558447843747; Tue, 21 May 2019 07:10:43 -0700 (PDT) X-Google-Smtp-Source: APXvYqw8DBZ1IFI4I+4dRGP+NgpwHHDVqa+fRTuAL80nwVbzVmjyDmk52vwMf9qjuQHgGxBE3XVoFFNu9M/75ptmK9U= X-Received: by 2002:a7b:cd0e:: with SMTP id f14mr3465016wmj.127.1558447842648; Tue, 21 May 2019 07:10:42 -0700 (PDT) MIME-Version: 1.0 References: <20190520220911.25192-1-gpiccoli@canonical.com> <20190520220911.25192-2-gpiccoli@canonical.com> <20190521125634.GB16799@infradead.org> In-Reply-To: <20190521125634.GB16799@infradead.org> From: Guilherme Piccoli Date: Tue, 21 May 2019 11:10:05 -0300 Message-ID: Subject: Re: [PATCH V2 2/2] md/raid0: Do not bypass blocking queue entered for raid0 bios To: Christoph Hellwig Cc: linux-block@vger.kernel.org, linux-raid , dm-devel@redhat.com, axboe@kernel.dk, Gavin Guo , Jay Vosburgh , "Guilherme G. Piccoli" , Ming Lei , Song Liu , Tetsuo Handa , stable@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Tue, May 21, 2019 at 9:56 AM Christoph Hellwig wrote: > > [1] https://lore.kernel.org/linux-block/20190515030310.20393-4-ming.lei@redhat.com/ > > Actually - that series should also fix you problem and avoid the need > for both patches in this series. Can you please test it? Hi Christoph, thanks for looking into this. You're right, this series fixes both issues. The problem I see though is that it relies on legacy IO path removal - for v5.0 and beyond, all fine. But backporting that to v4.17-v4.20 stable series will be quite painful. My fixes are mostly "oneliners". If we could get both approaches upstream, that'd be perfect! Cheers, Guilherme