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 EFF32C433F5 for ; Mon, 23 May 2022 19:30:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229931AbiEWT36 (ORCPT ); Mon, 23 May 2022 15:29:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58230 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230077AbiEWT2b (ORCPT ); Mon, 23 May 2022 15:28:31 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D0548127191 for ; Mon, 23 May 2022 12:08:22 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id v5-20020a17090a7c0500b001df84fa82f8so135034pjf.5 for ; Mon, 23 May 2022 12:08:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=HGhI/hoYXnrfglg09HC05okNiQVh1y2D3mnwrysSE4A=; b=ysjlmrGopFKUcPSX99OGODaZLKvyI89cuGY8gLks9Oz3mcdgI18SscvRDxk1+hJjWz pva2qKrF4BJtHjmz+liv6ovyRiZg3UYpPwTgd9Rf0r83QbXny3hLxOB2GofL1gUbb2eZ WTErs4APngwBOl0IGJgkvYmV5c6QW5mfq6wZCL50aDWGoXvznfj7IO2dGbIrFXrHR/uO AvRsZLJYnyDXUxeVm1wICAf2+aivo4Oe3EeFrBpHrm9g9UG6viBXcUWBhR0DpUrVeLlJ kI6RvwFJfU8F5yIg/8pQRfvbMJHydllRIRka3IwUtB8+9IhYW9siTO96YmUVIG3FzCBj v1bg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=HGhI/hoYXnrfglg09HC05okNiQVh1y2D3mnwrysSE4A=; b=h3zofIGE9awm1G/mAUpoqBBtVCvGt1TmUsQ1xa30Lt1kRIdWhaBlTDuyNzzATDSPNh IAGlZBgJhMtyIdxmdVEJgjXwmc9IJTy9ot3PXcWFQVPj41+ga3mqrr4MZs8fnMc3YpbF withWXRTzqWExMTfXFC7zEzr3HfJHMJLSSXcb5EdN74R+5ErByronoSWtTJqxfnYFKS/ zzgLYW+h8AI7cb79LDOVO4eNDXUjJCcVdXkBhDt8TiOoZB50/oAANLSk2U2Mnyfd751y H4fIRAme8SfPQ7ozI+8AEki6Ji0bhkaWwOSjHg7N9beAd4SyBJ/pQRwfpiuOxIKv0j/3 M5xg== X-Gm-Message-State: AOAM533BfHK1HXXlgW2n3vK6tc5AXe/xST0GRAq9RkFbPcoV7MX7R8wH hCEA/i0CyPdxJUbdh+6UEailjA== X-Google-Smtp-Source: ABdhPJyUaT0BfeqpIVsU6nOQC5jWSr1s3TNCPpHen+8iEx2oV5/BKMOUxOfXkdSNVF43CdBspItnNA== X-Received: by 2002:a17:90b:1c02:b0:1df:d8b8:6eb1 with SMTP id oc2-20020a17090b1c0200b001dfd8b86eb1mr484106pjb.90.1653332902056; Mon, 23 May 2022 12:08:22 -0700 (PDT) Received: from [192.168.254.17] ([50.39.160.154]) by smtp.gmail.com with ESMTPSA id d17-20020a170903209100b0015e8e7db067sm5513766plc.4.2022.05.23.12.08.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 23 May 2022 12:08:21 -0700 (PDT) Message-ID: <7bbf2792-355b-65a7-e239-879b3f928384@linaro.org> Date: Mon, 23 May 2022 12:08:20 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0 Subject: Re: [PATCH] cgroup: don't queue css_release_work if one already pending Content-Language: en-US To: Tejun Heo Cc: =?UTF-8?Q?Michal_Koutn=c3=bd?= , Hillf Danton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzbot+e42ae441c3b10acf9e9d@syzkaller.appspotmail.com References: <20220412192459.227740-1-tadeusz.struk@linaro.org> <20220414164409.GA5404@blackbody.suse.cz> <20220422100400.GA29552@blackbody.suse.cz> <20220519112319.2455-1-hdanton@sina.com> <25fb057a-077f-b601-dcb7-130071c733db@linaro.org> <489592f6-b783-7bdb-2cc8-0c8e35ebc674@linaro.org> <20220520164255.GB17335@blackbody.suse.cz> <6ac66e89-2063-c5e8-df15-f77b76befc05@linaro.org> From: Tadeusz Struk In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/23/22 12:02, Tejun Heo wrote: > Can you try holding an extra ref in the killed path? Yes, I can try that. Should that be with or without the extra work_struct? -- Thanks, Tadeusz