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 0ABABC32772 for ; Tue, 23 Aug 2022 17:11:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244009AbiHWRLs (ORCPT ); Tue, 23 Aug 2022 13:11:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41720 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344305AbiHWRKl (ORCPT ); Tue, 23 Aug 2022 13:10:41 -0400 Received: from mail-pg1-x52a.google.com (mail-pg1-x52a.google.com [IPv6:2607:f8b0:4864:20::52a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8123E15B169 for ; Tue, 23 Aug 2022 06:37:50 -0700 (PDT) Received: by mail-pg1-x52a.google.com with SMTP id 202so12288420pgc.8 for ; Tue, 23 Aug 2022 06:37:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=content-transfer-encoding:mime-version:date:message-id:subject :references:in-reply-to:cc:to:from:from:to:cc; bh=n7iR6psZ0iOUa2Hyhot7GU8syOFqaZ9ER5oGtEDczdg=; b=gzwKQkZXZT1UZ65SM/9R7Cl/ZDlYyhZQznytLr5Xu3snKGW/n6vebjP7SWs+snSeJZ LOqBtED5BU9MJhTK4LHepgdwhSfNq6yrJySt3Og5p50NhnanNKmYZB88beBshEgcCjA4 ja9+yF6oNDFw8UK1TWra5d0nKp0+x6ic/UgdqwVk0wJTTt0HmmyVOptAm2cKZ3SZ6am8 6sr6hG2k9GisAKOAu69KMupuHuX5DMNsU4MuMkvJqtkdMNBQ9yr36vZ6b+exebrF364R HCdrrR9J8dr6HnWMTWm1diPzzC5mUrQsM1qDkRa8YyZm1SJE+dniIod67iMCnhD32pNc /edQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:date:message-id:subject :references:in-reply-to:cc:to:from:x-gm-message-state:from:to:cc; bh=n7iR6psZ0iOUa2Hyhot7GU8syOFqaZ9ER5oGtEDczdg=; b=HJsG/FqvnTKdD3gVQizgpTBinYyablMxkIigHna+wFkd8OWJ3rKGuSd01aMQQWi3P/ e8y10tpDIFtZbtR9dzyunvmkW6T2uWyOBEogHM+3xaPYoWIf26y9nK7QYVNbevNPhYJQ djR+0KQCSUljzv5LyfbG0lLCDUdNzOwD3sXz7Hw2KDDKBuUcgNewCqCJHtaySbDyI+5E o6XZfOOJVlbhevtbla09iwxaPjqxW4k24UB2z8aISEna8fcuf8kXJ3Kf9/DdF4lDS/j2 t3Ha+A80mTEZ70Lv96mSmTVGy2t7/ybSLazcXa1egV1t2eafdBvcKC3LRe3PDwC7dvtR A44Q== X-Gm-Message-State: ACgBeo1y+oFECtFfHmo43YPEPdQtnh0fS6tcNdsLc2nTtP0Gu2ai1JVg K/+Sgq1I6lftVzgL3l08dpc5Hw== X-Google-Smtp-Source: AA6agR43WZ/zqeBIRZ1JCqy6cCBGpWEy4XEWjFD62cNl4VC+iQfzRPpGQ8X0bfc8NEw4vlV4qrBnbQ== X-Received: by 2002:a62:1b12:0:b0:536:715c:4d96 with SMTP id b18-20020a621b12000000b00536715c4d96mr12590248pfb.77.1661261869924; Tue, 23 Aug 2022 06:37:49 -0700 (PDT) Received: from [127.0.0.1] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id u6-20020a170902e5c600b0016d88dc7745sm10512985plf.259.2022.08.23.06.37.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Aug 2022 06:37:48 -0700 (PDT) From: Jens Axboe To: jack@suse.cz, osandov@fb.com, yukuai1@huaweicloud.com Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, yi.zhang@huawei.com, yukuai3@huawei.com In-Reply-To: <20220803121504.212071-1-yukuai1@huaweicloud.com> References: <20220803121504.212071-1-yukuai1@huaweicloud.com> Subject: Re: [PATCH] sbitmap: fix possible io hung due to lost wakeup Message-Id: <166126186831.27028.2544657181662350295.b4-ty@kernel.dk> Date: Tue, 23 Aug 2022 07:37:48 -0600 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Wed, 3 Aug 2022 20:15:04 +0800, Yu Kuai wrote: > From: Yu Kuai > > There are two problems can lead to lost wakeup: > > 1) invalid wakeup on the wrong waitqueue: > > For example, 2 * wake_batch tags are put, while only wake_batch threads > are woken: > > [...] Applied, thanks! [1/1] sbitmap: fix possible io hung due to lost wakeup commit: 040b83fcecfb86f3225d3a5de7fd9b3fbccf83b4 Best regards, -- Jens Axboe