Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [PATCH, RFC] RCU : OOM avoidance and lower latency | Date | Fri, 6 Jan 2006 13:58:41 +0100 |
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On Friday 06 January 2006 11:17, Eric Dumazet wrote:
> > I assume that if a CPU queued 10.000 items in its RCU queue, then the > oldest entry cannot still be in use by another CPU. This might sounds as a > violation of RCU rules, (I'm not an RCU expert) but seems quite reasonable.
I don't think it's a good assumption. Another CPU might be stuck in a long running interrupt, and still have a reference in the code running below the interrupt handler.
And in general letting correctness depend on magic numbers like this is very nasty.
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