Re: [PATCH] [4/4] SLAB: Fix node add timer race in cache_reap
From: Andi Kleen
Date: Fri Feb 26 2010 - 06:41:48 EST
On Thu, Feb 25, 2010 at 12:30:26PM -0600, Christoph Lameter wrote:
> On Thu, 25 Feb 2010, David Rientjes wrote:
>
> > I don't see how memory hotadd with a new node being onlined could have
> > worked fine before since slab lacked any memory hotplug notifier until
> > Andi just added it.
>
> AFAICR The cpu notifier took on that role in the past.
The problem is that slab already allocates inside the notifier
and then some state wasn't set up.
> If what you say is true then memory hotplug has never worked before.
> Kamesan?
Memory hotplug with node add never quite worked on x86 before,
for various reasons not related to slab.
-Andi
--
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/