Andi Kleen a écrit :
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.
I agree Andi, I posted a 2nd version of the patch with no more assumptions.
Eric
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