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=-2.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 65C12CA9EA0 for ; Fri, 25 Oct 2019 15:47:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2FEBC21D7B for ; Fri, 25 Oct 2019 15:47:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="he6aRuQ/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2395501AbfJYPrO (ORCPT ); Fri, 25 Oct 2019 11:47:14 -0400 Received: from mail-il1-f195.google.com ([209.85.166.195]:33082 "EHLO mail-il1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2395419AbfJYPrO (ORCPT ); Fri, 25 Oct 2019 11:47:14 -0400 Received: by mail-il1-f195.google.com with SMTP id v2so2270322ilm.0 for ; Fri, 25 Oct 2019 08:47:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=SsJ9ZEsxHLQX+f5vHYqEDrQy/+4JococvH2/h9P17zw=; b=he6aRuQ/AIXKWZI2PJA3rZyD95WzKjyJhLQXtgU2F+cFoWNyNr5oBn19vvmLGvleil GtyNdLTqx/qKDJhASDKdA1OfeQ86afMcrr/1/YA9HXLHyfYmIt7m3BmNszqWRC1PXtOT GN48AV+vgsBLwXVGUlHCoQDhuSmUX3pyzwuAzEkUEAnQvfVFIWXlNZAKRxSZJuKgBdI2 OvTYiTD9G/QxLBgOpNQA7oNTsqQ04KOIk+35wesndDTFmphRZB595YIcQvhWf4LrfhK0 JFczvffbCSE2VRcGW3zi4kBnPLP8B5grOkdyw2RRc3Zt64X7oda/4dyyi61tr7FjGNbi Jksg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=SsJ9ZEsxHLQX+f5vHYqEDrQy/+4JococvH2/h9P17zw=; b=TXLb9pWHQNECKaXQ9kXHX1nzlGwAN0sYq9pttmkU/mRVHNLGy5yHzTQjTPfM1ts9rJ nFHaORqrAvPMbduoLWHJL6Teldnh9/di3Tz6tMUT3vswz4PAzeegWh/bShtXBW9CJhvH liD3dbje97JnXYu7vVqUAeUBeg5NI6AScW5e2nc4/qYK4pOuXgvmN72G+SOhA00kdRnz 9HifEEsd+AtkF/tDcop6hFBT7jGKycLEqkAxrHyApCkdx8FUSbwhIWstWZVCiC40BPPX GP8yGIrhgdpi2iXUgrAYKFr4a8+H3eN1XCL3ZlcfGSDYC3JFQa0O8MSzd9cPwjvc0958 HoaA== X-Gm-Message-State: APjAAAUhI06kQS2T33loXQrm5WA+YwqIROOt3RdcwHSFFOrcj9BOzkBo Lx2XkHXg4bZgKtL2CKDk7xJr+z4NWVtiow== X-Google-Smtp-Source: APXvYqwyySGpPibGqJVkRv9IbFQnmdKTYqHgRrLK378RuRbWMxYvoS8nhyRCggpIVCKVC1/kW9KC/A== X-Received: by 2002:a92:ce12:: with SMTP id b18mr5159832ilo.130.1572018431360; Fri, 25 Oct 2019 08:47:11 -0700 (PDT) Received: from [192.168.1.159] ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id q11sm366277ilc.29.2019.10.25.08.47.09 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 25 Oct 2019 08:47:10 -0700 (PDT) Subject: Re: [PATCH liburing 1/1] test/defer: Test deferring with drain and links To: Pavel Begunkov , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org References: <3d2e8533-6085-b328-7e27-9a5be2027b7f@kernel.dk> <9ec359eb-b639-65a5-4f01-7e7fdfa9a8af@gmail.com> From: Jens Axboe Message-ID: <7a2af956-e96f-a24c-2afe-806789a7fae2@kernel.dk> Date: Fri, 25 Oct 2019 09:47:08 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <9ec359eb-b639-65a5-4f01-7e7fdfa9a8af@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/25/19 9:40 AM, Pavel Begunkov wrote: > On 25/10/2019 18:13, Jens Axboe wrote: >> On 10/25/19 3:48 AM, Pavel Begunkov (Silence) wrote: >>> From: Pavel Begunkov >>> >>> 1. test user_data integrity with cancelled links >>> 2. test the whole link is cancelled by sq_thread >>> 3. hunging io_uring based on koverflow and kdropped >>> >>> Be aware, that this test may leave unkillable user process, or >>> unstopped actively polling kthread. >> >> That's fine, that's what the test suite is for! Thanks, applied. > > Just found it "a bit uncomfortable", that after several runs > my CPU was doing nothing but polling in vain. Looks like it's testing one of the cases that isn't fixed that. We shouldn't do that until a known fix is available, at least. Basically the tests should test for things that used to be a problem, but are now fixed. But let's just get it fixed :-) -- Jens Axboe