Re: Linux 2.6.25-rc2

[Pekka Enberg]

Hi Mathieu,

On Feb 19, 2008 4:02 PM, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx> wrote:
> - stat(c, ALLOC_FASTPATH); seems to be using a var++, therefore
>   indicating it is not reentrant if IRQs are disabled. Since those are
>   only stats, I guess it's ok, but still weird.

What is not re-entrant?

On Feb 19, 2008 4:02 PM, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx> wrote:
> Since this shows mostly with network card drivers, I think the most
> plausible cause would be an IRQ nesting over kmem_cache_alloc_node and
> calling it.

Yes, this can happen. Are you saying it is not safe to be in the
lockless path when an IRQ triggers?
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