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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C9FB2C433F5 for ; Fri, 26 Nov 2021 18:41:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:MIME-Version:Date:Message-ID:From:References:Cc:To: Subject:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Dn3JlSLQT9unLajVMFXj26hJHVTESOPmLbf77Et5Cto=; b=HeMH2ZmLeF6cT1tlt5UUaieC2B f8lpMjIdxo+HF7Iz/sGsy3rzRTIxR5yiN1/gJo7kwsnmIWGQHlWUW8+JohLVpSwiDdir0fl6DzpTc 1kswmN5J+qCihY89LJ/TOkN+WfwSzukLFIm9vR6IDAjnsiMX4ZyAmaNl+ns2jz2N1V1xIXyJoVbA0 cEwdq2qSD+Ln5wVEukTDlegKS1czTqxysCXCS2e3BSXukgP22AOFFjLAovwZP+/8apHTL63fireVq g0iASVe7nvsiTPH0770FhAhOXgobpxhgPsUe9ShE9nnCbR46lnlZ0fWo0CCiNmusQttmutQPVn+/X oMP3pVgQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mqgA4-00BXmu-Np; Fri, 26 Nov 2021 18:41:28 +0000 Received: from mail-il1-x130.google.com ([2607:f8b0:4864:20::130]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mqgA2-00BXmJ-6U for linux-nvme@lists.infradead.org; Fri, 26 Nov 2021 18:41:27 +0000 Received: by mail-il1-x130.google.com with SMTP id i9so9978345ilu.1 for ; Fri, 26 Nov 2021 10:41:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=Dn3JlSLQT9unLajVMFXj26hJHVTESOPmLbf77Et5Cto=; b=UNjy/Jv4WKcXZelCIVYlBcimUg0Fp/9Y0SMcJdLYa7It/0ARpXcFAH7DXMGioH/USa FcmTsiNaR5DOOqqdIAZsb7zTEnFac9CelF5GI6Zh5xGDPZbn9pxHhbNl9DwaSQBq3NXB pg6xIt2AKWQBhpjx1jsxoBbD9fq79X6ab0ie1Dd8BIfNxzmtcyEhf2S8gfRCvhN10IyW X5GwEKylzoQhqasSxkkWHOwgjo0POyGVrNFu1RubvkX3RkoXf/T7vBIX8kdZVRwKBbcC 6UfQH3R9tnOZrpyKI/ldw8y/aPZA5IKcMF6tutHL8gV9tGsdSNJzbcPEVcwzyZqWLMbb qlLQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=Dn3JlSLQT9unLajVMFXj26hJHVTESOPmLbf77Et5Cto=; b=IQOCuVSGepS/fW4T6kC5fpBF+EPiwlg+KLeUlAFe/RFcY7MyEiPV6ek77S264+37o5 C2WNzjyYp+UYvtd3H/mYB+XRGXauhgI++RTt2hJPGdZK2AXak1kwhDqQD4ZTZByh82Bq f7QLwN7wLhdygHmL7oGNBQpgbuFutB/gBq1tc0OVL8goxn7dNIHdqv0kyynMOI9eTwRx 2x9xur2DKoMBCVnuZr3/p9/Vg72eoNV0JPoosr9yfOg1WRetUP8OK5itASTLXbZ7cMDs VyNFPKZJhbBHhMyOWdhWG3NVTFaSTFW4SxNzwkPw5ho/DQN7hiid77geyiFq+izmRxqY 2VSQ== X-Gm-Message-State: AOAM531RT0tmsWdF7jbvZb4cfOWofqxwCyBzLsXh/DAWUZj2ffNslOXy 0K2JmXYhdW+B6vp4BWMBFLOAoTuf2xOnOC7N X-Google-Smtp-Source: ABdhPJzJK9pUIli5rOMIsOCySu1SxFt6BSM8IWUQXMeRmK3cP+2UPpMd/+bu06A3rIg3MRg5+wUwTQ== X-Received: by 2002:a92:d38b:: with SMTP id o11mr33208142ilo.35.1637952085029; Fri, 26 Nov 2021 10:41:25 -0800 (PST) Received: from [192.168.1.116] ([66.219.217.159]) by smtp.gmail.com with ESMTPSA id n12sm3981499ilk.80.2021.11.26.10.41.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 26 Nov 2021 10:41:24 -0800 (PST) Subject: Re: Write I/O queue hangup at random on recent Linus' kernels To: "Kenneth R. Crudup" Cc: linux-bcache@vger.kernel.org, linux-block@vger.kernel.org, linux-ext4@vger.kernel.org, linux-nvme@lists.infradead.org, Shinichiro Kawasaki References: <17206ea6-506d-b1de-09e8-c935ff308bd6@kernel.dk> <903be817-4118-f34e-1b35-a0108045590f@kernel.dk> <986e942b-d430-783b-5b1c-4525d4a94e48@panix.com> <1ff86d55-f39d-f88b-b8d-b6dfbd2f1b19@panix.com> From: Jens Axboe Message-ID: Date: Fri, 26 Nov 2021 11:41:22 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <1ff86d55-f39d-f88b-b8d-b6dfbd2f1b19@panix.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211126_104126_277217_A24C2F3E X-CRM114-Status: GOOD ( 13.39 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On 11/26/21 11:20 AM, Kenneth R. Crudup wrote: > > On Fri, 26 Nov 2021, Jens Axboe wrote: > >> I'd just do what you usually do, that's usually the best way to gain >> confidence in the fix. > ... >> That said, I'm pretty confident in the fix, > > OK, then I'll just continue my normal workflow. Sounds good. > ... but am I the first report of this you've seen? (I sometimes wonder how many > people use the master branch as a daily driver; an -rc went out a couple of > weeks ago that had a commit that broke suspend that manifested right away.) https://lore.kernel.org/linux-block/20211126095352.bkbrvtgfcmfj3wkj@shindev/ There's another here from today. But this particular window has a pretty narrow window, which often means that most people won't hit it, while the people that do hit it all the time... -- Jens Axboe