linux-kernel - Re: [tip:core/urgent] futex: Update woken requeued futex_q lock

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Message-ID: <20090809205611.GA23276@elte.hu>
Date:	Sun, 9 Aug 2009 22:56:11 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	mingo@...hat.com, hpa@...or.com, dvhltc@...ibm.com,
	linux-kernel@...r.kernel.org, jkacur@...hat.com,
	johnstul@...ibm.com, peterz@...radead.org, dino@...ibm.com,
	rostedt@...dmis.org, stable@...nel.org, tglx@...utronix.de
Cc:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:core/urgent] futex: Update woken requeued futex_q lock_ptr


* tip-bot for Darren Hart <dvhltc@...ibm.com> wrote:

> @@ -1030,6 +1034,11 @@ void requeue_pi_wake_futex(struct futex_q *q, union futex_key *key)
>  	WARN_ON(!q->rt_waiter);
>  	q->rt_waiter = NULL;
>  
> +	q->lock_ptr = &hb->lock;
> +#ifdef CONFIG_DEBUG_PI_LIST
> +	q->list.plist.slock = &hb->lock;
> +#endif
> +
>  	wake_up_state(q->task, TASK_NORMAL);
>  }
>  

-tip testing found a build error with v2 of the patch:

kernel/futex.c: In function ‘requeue_pi_wake_futex’:
kernel/futex.c:1039: error: ‘struct plist_head’ has no member named ‘slock’

	Ingo
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