From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f170.google.com (mail-oi1-f170.google.com [209.85.167.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5965B13D891 for ; Fri, 28 Aug 2026 02:03:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.170 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787882617; cv=none; b=OKANarnvOCRlQXkaMwmF/P34/d/QRD60VynvrhS2bQ3CTeEmDZ0GOU0m0ukxzl7HKN6e5tImSzIg0ZgjmuAJgcknfX2bX9zFXDLhfWsNdTB4lGeFXSX2DSJ2iHzy9CNNjz+MwrBlp2YwhnPCWpps+WKU5/pHB8/C40aq3/ciK1g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787882617; c=relaxed/simple; bh=o8STLy72E4h/h+IrUcxPbm4uQeT9WaWvgLAmymwuyNw=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=O3AY44wcUdXClrCCRwk+5PA8HYbUEuBhgGDL5WJWbbxvBlPPjPsK8XfM2wjn/kahHSY7ZTI57VVXZ3G81ygu42beHK8mfhsE8I0T1IryZcQ6+yABy3v+so/K9yPDUvBkOGX5R9JiVmoN+BUtk0rFyH3kbfj2ALrlC0mq8oJu4vE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk; spf=pass smtp.mailfrom=kernel.dk; dkim=pass (2048-bit key) header.d=kernel-dk.20251104.gappssmtp.com header.i=@kernel-dk.20251104.gappssmtp.com header.b=GACq9F5r; arc=none smtp.client-ip=209.85.167.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kernel.dk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20251104.gappssmtp.com header.i=@kernel-dk.20251104.gappssmtp.com header.b="GACq9F5r" Received: by mail-oi1-f170.google.com with SMTP id 5614622812f47-4ab8cb2a6e4so618530b6e.0 for ; Thu, 27 Aug 2026 19:03:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20251104.gappssmtp.com; s=20251104; t=1787882614; x=1788487414; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=C5ykKG2FA8UXE/CNS1ckuIh5z7Gwn0o9g2gdMHvGoGo=; b=GACq9F5rTn2dpIWeJ5f0BD38lDZ9aqOZ68HYacTD4Z7FTyP8ohBi7G1Ce06gapADh6 DJ0nimr4ojrh03mPj2Ez0hJ3YBpTfmHeX0mv+e6GmLtWNBpCQLgGd7vA7WmlVUsxx+Hj MQ9H6ircaXEBiElbGECGry1kf1Q+Vq8gp5Ss4paRvPhVVZtrXuuV0NiSKu0NKt0lacUB GV0tvQ2+Hu5Qoebsa55mQiFXvTkobKlZGw5DFBiDLGW5bjMFabb5TDMUIXTMUxXZB5dU RPBzI57HeUCZxzVOx+g2GeBEFbPS/iUwNc2t1q2B/+xp1NR09a4hvRys+OxfVBdocWwB RIcA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787882614; x=1788487414; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=C5ykKG2FA8UXE/CNS1ckuIh5z7Gwn0o9g2gdMHvGoGo=; b=Ks4n/dDWF647WQo4EOV9+u9Q088mOyNJ4IAX3kDojgt8YMgX7Mj/V/N9v5qbR7RsqZ cx0GqSVJdBZrx4JT24KJyPNEv6w1I4HlZmwM8ev3jOuMScXtzNumfFhA7uGHWn2kPneh sbn7R7dDCQLOZeoHXnrMFYCOURO47CeVyjiqi5eW/jVSlCSz39bsFZcqmgkbNw6f5Ky4 anopSwkRy0np7iG5o4d3kyO+Y4D75IFkPDO89pvjVEib0uSSKs7AYFdxGRiwVFI/dLyG ZPQQBLf1hOu2fS+R8JQ6shl0VSydVmVDEizTAGeKjl4LTgtTnjdu80baUQ9E9fe8kbtJ 5Iow== X-Forwarded-Encrypted: i=1; AHgh+RqSIuTfJjX/+9wXp3NnEsucMC6frzLZOrNvtl6vOOWD9baa5RpMSTVjU8JVkLtjHelx0wdMomk=@vger.kernel.org X-Gm-Message-State: AFuF++m9UxZgbUVDlN8aS/I/ZupI/r0KFXVrpI8DbqD3PWBkM1XqWRzA q28T1kQ5W8baKWyb4rInyE0vviQ2vKcKFYY1CUyvV3Ts/BTmJ9HpjNNxBYGPP6JZO3ap0LEoTSJ xBF6uKl0= X-Gm-Gg: AR+sD12hsykgLIlrKyUS9OzHWGeibQ5tTf3bKwGiF74eN9sZO9zQRxKnXBCsVcdMDu9 kCQmROZlD4DyDT+86xTKiLL957JfiKKAHjQjZtL1IBa5ZkhX/mVy+sY3KDMzdziVORQB212qsUk dmx3/iQTLq9d3Mxv13E2iswyDx3z04xLQZjhOV9Tx41aQgaHp5Bf9PAid6aZ7MhyR5CkxfBSXII IomUJE/1TAJh4N15hML6QRrLjcxx8yi/HwlakyuWUmorb7RrO8GdqA8HxD+n4/az5CvhHVn4Scv YbpiHyaw9NQnT4koo5Huk5PzB1jiIvuLNTX+2LZ36U8CpV4vEhz9sVhA7BLskngB6gl6HlQ9G5n uFTHwAhcpp2RJMwYOqtprmo6mRHz6h1fanmAAO1nSbTwO75MxXgg1X1xZ9AxJsPcDQVIIYz3WAg evJC3GD5K0lcOJ2280uz9/BqtIZXspR3ZUg9A87SHfVorTJxM3eV6+Op2GUbAO3pwbAnGcMWNrv sFh/wN74N4VBYCKa8XrQaiLEayfUaCWmiMkiWCh2cmWUoc= X-Received: by 2002:a05:6820:188c:b0:6ac:abdb:7f99 with SMTP id 006d021491bc7-6b1c66c662emr1322604eaf.28.1787882556695; Thu, 27 Aug 2026 19:02:36 -0700 (PDT) Received: from [192.168.1.150] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id 006d021491bc7-6b1ce35c529sm204469eaf.13.2026.08.27.19.02.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 27 Aug 2026 19:02:35 -0700 (PDT) Message-ID: Date: Thu, 27 Aug 2026 20:02:34 -0600 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 6.6.y] io_uring/io-wq: fix worker accounting when canceling creation callbacks To: Sasha Levin , stable@vger.kernel.org Cc: asml.silence@gmail.com, vrazdan@openai.com, krisman@suse.de, io-uring@vger.kernel.org, gregkh@linuxfoundation.org, Vishnu Razdan via B4 Relay References: <20260825-stable-io-wq-6-6-y-v1-1-c9f890168485@openai.com> <20260827-stable-daily-0011-io-wq-6-6@kernel.org> Content-Language: en-US From: Jens Axboe In-Reply-To: <20260827-stable-daily-0011-io-wq-6-6@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 8/27/26 7:46 PM, Sasha Levin wrote: >> Decrement nr_workers only when the canceled callback is not >> create_worker_cb(). Continuation callbacks still release their reserved >> slot, and both callback types retain the existing running-count, >> reference-count, and create-state cleanup. >> >> [ Backport: retain the existing wq->lock protecting worker accounting. ] > > Queued for 6.6, thanks. > > I also used this patch for 6.12. Thanks for doing this - and I'm assuming the AUTOSEL stuff is both adapting patches so they apply, and pulling in prerequisites? If so, I love it, imho this is exactly what it should be doing. Helps maintainers out a lot. -- Jens Axboe