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Rev 5270 Rev 6082
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	struct rcu_head rcu;
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	struct rcu_head rcu;
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	struct list_head cb_list;
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	struct list_head cb_list;
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	spinlock_t *lock;
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	spinlock_t *lock;
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	unsigned context, seqno;
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	unsigned context, seqno;
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	unsigned long flags;
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	unsigned long flags;
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//   ktime_t timestamp;
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	ktime_t timestamp;
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	int status;
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	int status;
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};
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};
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enum fence_flag_bits {
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enum fence_flag_bits {
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	return false;
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	return false;
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}
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}
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/**
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 * fence_is_later - return if f1 is chronologically later than f2
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 * @f1:	[in]	the first fence from the same context
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 * @f2:	[in]	the second fence from the same context
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 *
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 * Returns true if f1 is chronologically later than f2. Both fences must be
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 * from the same context, since a seqno is not re-used across contexts.
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 */
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static inline bool fence_is_later(struct fence *f1, struct fence *f2)
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{
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	if (WARN_ON(f1->context != f2->context))
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		return false;
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	return f1->seqno - f2->seqno < INT_MAX;
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}
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/**
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/**
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 * fence_later - return the chronologically later fence
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 * fence_later - return the chronologically later fence
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 * @f1:	[in]	the first fence from the same context
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 * @f1:	[in]	the first fence from the same context
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 * @f2:	[in]	the second fence from the same context
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 * @f2:	[in]	the second fence from the same context
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	/*
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	/*
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	 * can't check just FENCE_FLAG_SIGNALED_BIT here, it may never have been
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	 * can't check just FENCE_FLAG_SIGNALED_BIT here, it may never have been
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	 * set if enable_signaling wasn't called, and enabling that here is
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	 * set if enable_signaling wasn't called, and enabling that here is
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	 * overkill.
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	 * overkill.
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	 */
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	 */
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	if (f2->seqno - f1->seqno <= INT_MAX)
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		return fence_is_signaled(f2) ? NULL : f2;
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	if (fence_is_later(f1, f2))
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	else
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		return fence_is_signaled(f1) ? NULL : f1;
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		return fence_is_signaled(f1) ? NULL : f1;
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	else
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		return fence_is_signaled(f2) ? NULL : f2;
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}
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}
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signed long fence_wait_timeout(struct fence *, bool intr, signed long timeout);
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signed long fence_wait_timeout(struct fence *, bool intr, signed long timeout);
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signed long fence_wait_any_timeout(struct fence **fences, uint32_t count,
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				   bool intr, signed long timeout);
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/**
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/**
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 * fence_wait - sleep until the fence gets signaled
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 * fence_wait - sleep until the fence gets signaled