Re: [PATCH] printk: robustify printk

[David Miller]

From: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Date: Fri, 08 Aug 2008 20:14:28 +0200

> +struct klogd_wakeup_state {
> +	struct rcu_head head;
> +	int pending;
> +};
> +
> +DEFINE_PER_CPU(struct klogd_wakeup_state, kws);

Since there is not RCU_HEAD_INIT() made on these per-cpu objects, this code
is depending upon the fact that currently the RCU head is just initialized
to all zeros.
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