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Date:   Tue, 18 Dec 2018 11:39:57 -0800
From:   Davidlohr Bueso <dave@stgolabs.net>
To:     Waiman Long <longman@redhat.com>
Cc:     Peter Zijlstra <peterz@infradead.org>,
        Yongji Xie <elohimes@gmail.com>, mingo@redhat.com,
        will.deacon@arm.com, linux-kernel@vger.kernel.org,
        Xie Yongji <xieyongji@baidu.com>, zhangyu31@baidu.com,
        liuqi16@baidu.com, yuanlinsi01@baidu.com, nixun@baidu.com,
        lilin24@baidu.com, andrea.parri@amarulasolutions.com
Subject: Re: [PATCH v2] sched/wake_q: Reduce reference counting for special
 users
Message-ID: <20181218193957.cjx34nn5tku2eaps@linux-r8p5>
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On Tue, 18 Dec 2018, Davidlohr Bueso wrote:
>+void wake_q_add_safe(struct wake_q_head *head, struct task_struct *task)
>+{
>+	if (!__wake_q_add(head, task))
>+		get_task_struct(task);

*sigh* and this should be put().