Re: [PATCH] keys: Discard key spinlock and use RCU for key payload [try #3]

From: David Howells
Date: Thu Mar 10 2005 - 08:06:11 EST

David Howells <dhowells@xxxxxxxxxx> wrote:

> > What's with the preempt_enable()/disable() added to __key_link()? It's not
> > obvious what is being protected from what, and why.
> Ummm... Yes... They're probably not necessary. A wmb() may be required after
> the klist->nkeys++ to commit to memory the fact there's now an extra key link
> available, but I'm not sure that it's necessary.

I should perhaps be using smp_wmb() not wmb().

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