From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCH v3 0/2] Invert cpu_hotplug_lock and cpuset_mutex locking order. Date: Mon, 27 Nov 2017 08:48:55 -0800 Message-ID: <20171127164848.GF983427@devbig577.frc2.facebook.com> References: <20171115103742.xt7muaq2dfrs2cyd@hirez.programming.kicks-ass.net> <1510755615-25906-1-git-send-email-prsood@codeaurora.org> Mime-Version: 1.0 Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=4hiLAB6yUoi1a1MdSO1Sn65Te05tuWzpdCFkmYVhkyQ=; b=TO27g9tl/dkmoKL1B1vQw5Xkdz1jQpFdqf9wybyqzX2k2karT3v/6SJu3utvaHq3FK R6MD1An982nb97nFsCT6nXhscyBM1og1SgLEz77b32cWmJBEA1c8bO6sw639i+bZwmRr FBntsdxTtuu8tMmeshpRBGOfWSwQZQ1yyE0ghbx0rIBfmJUDddeINmTTvPkAhWkAX4RK 9Rn9Lgdh/HlQS5aApJqHZm1XOSInYkJGbyEH3WLjAAOSPdJNICQ3vTHu/qycW87x408s SEDwQa+3idARTcxCs0zUVuwQRZ/ix5D920q4whGSDuYCvzdncKHAx39aJrIVzGekM0bh LAMA== Content-Disposition: inline In-Reply-To: <1510755615-25906-1-git-send-email-prsood@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Prateek Sood Cc: peterz@infradead.org, longman@redhat.com, lizefan@huawei.com, mingo@kernel.org, boqun.feng@gmail.com, tglx@linutronix.de, cgroups@vger.kernel.org, sramana@codeaurora.org, linux-kernel@vger.kernel.org, clingutla@codeaurora.org On Wed, Nov 15, 2017 at 07:50:13PM +0530, Prateek Sood wrote: > This patch does following > 1- Remove circular dependency deadlock by inverting order of > cpu_hotplug_lock and cpuset_mutex. > 2- Make cpuset_hotplug_workfn() synchronous for cpu hotplug path. > For memory hotplug path it still gets queued as a work item. > > Prateek Sood (2): > cgroup/cpuset: remove circular dependency deadlock > cpuset: Make cpuset hotplug synchronous Applied to cgroup/for-4.15-fixes. Thanks. -- tejun