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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9D920C41513 for ; Mon, 14 Aug 2023 21:43:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232588AbjHNVnB (ORCPT ); Mon, 14 Aug 2023 17:43:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49212 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232469AbjHNVmn (ORCPT ); Mon, 14 Aug 2023 17:42:43 -0400 Received: from mail-pf1-x431.google.com (mail-pf1-x431.google.com [IPv6:2607:f8b0:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 78E4112E for ; Mon, 14 Aug 2023 14:42:42 -0700 (PDT) Received: by mail-pf1-x431.google.com with SMTP id d2e1a72fcca58-68844c0af5dso110936b3a.1 for ; Mon, 14 Aug 2023 14:42:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20221208.gappssmtp.com; s=20221208; t=1692049362; x=1692654162; h=content-transfer-encoding:mime-version:date:message-id:subject :references:in-reply-to:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=DrArp5hxpkdgjNK8gMpBHma1X/irJT/bwo2nrrap7jw=; b=1/eIPU/Beo3pGB8oRf7iueZnFOu64es4saACfGEmGsl8pg9E1w29PMb9sFRMwL58X/ jmRPocTlbnFeY9iWpJvbRxnEhBVyrXRKM5g+TqSgZabP5oOx/ao09eZ+9pN0NGBaK2B4 bBm78X20IRdYe34mR25Q321/hGEJoxmJSdECaWAcz6y8b+lO5KSvpfiCQL+Rez8EflJW gkYp2D+fF8in0X0KmBif9aKIQo7Q9nCFMYbKIZI9iwI6yYSuVHleE5qBcedgsvM4thRv q11HFRYOA3NqGuTW8GZM3m7m1YvsvNN4jiIdbdkpMaGRUoAqLjNxcGqxSTxIzTUx1itm yfRw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692049362; x=1692654162; h=content-transfer-encoding:mime-version:date:message-id:subject :references:in-reply-to:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=DrArp5hxpkdgjNK8gMpBHma1X/irJT/bwo2nrrap7jw=; b=JoLKQEnWMsQzMKUdOyW/IXdXTAojVNzATusHihHb52vYBwIxKJ4gniIigvk1MGjbdS FsRsFaeaCN62x+IG0EuBqlw+gFgayW82wrZomoqTTX/eWsLRq19Mm2y9nlVYFk017pLV /84MYB7IqnCYq4cxcKNm25E55DWuIkdwqFo2kRbbfex8poH549t6pgIiHSchJeW/E0FQ OOGlDYZ3Ejv3qHkK5GC5M1fQ4u90Q9Qt8YCrxkPCdVA7IRkkieUXYepE6phGrAZA1d7P mWWOk6TOCKLF9jCvQAuBrvX/W/mHJ/V1rPgtOmzdfgbqUuw2B+Su6zlQ7xka6CVpkXap ECwQ== X-Gm-Message-State: AOJu0YxeJjJfjKVGzOar/qaklpNhbFLOBf9T5HCHQkqiSHYeHY+VDZWv TitYUO3E/Jn2YJW6FyJkf1pDzQ== X-Google-Smtp-Source: AGHT+IGWuKZrXvXNXMNbLK8XyKtfWy2Dj8d1s/Exg/N4xSpJ2YzMptutmIEe4694RskKGx76/2Mf9A== X-Received: by 2002:a05:6a20:729b:b0:134:d4d3:f0a5 with SMTP id o27-20020a056a20729b00b00134d4d3f0a5mr15183457pzk.2.1692049361961; Mon, 14 Aug 2023 14:42:41 -0700 (PDT) Received: from [127.0.0.1] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id c9-20020a62e809000000b0064aea45b040sm8322132pfi.168.2023.08.14.14.42.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Aug 2023 14:42:41 -0700 (PDT) From: Jens Axboe To: hch@lst.de, chuck.lever@oracle.com, chengming.zhou@linux.dev Cc: bvanassche@acm.org, cel@kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, zhouchengming@bytedance.com In-Reply-To: <20230813152325.3017343-1-chengming.zhou@linux.dev> References: <20230813152325.3017343-1-chengming.zhou@linux.dev> Subject: Re: [PATCH v2] blk-mq: release scheduler resource when request complete Message-Id: <169204936048.419413.8584205428292895580.b4-ty@kernel.dk> Date: Mon, 14 Aug 2023 15:42:40 -0600 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.13-dev-034f2 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 13 Aug 2023 23:23:25 +0800, chengming.zhou@linux.dev wrote: > Chuck reported [1] a IO hang problem on NFS exports that reside on SATA > devices and bisected to commit 615939a2ae73 ("blk-mq: defer to the normal > submission path for post-flush requests"). > > We analysed the IO hang problem, found there are two postflush requests > are waiting for each other. > > [...] Applied, thanks! [1/1] blk-mq: release scheduler resource when request complete (no commit info) Best regards, -- Jens Axboe