On Thu, 2006-05-18 at 14:50 +0900, Yasunori Goto wrote:
> + if (new_pgdat) {
> + ret = register_one_node(nid);
> + /*
> + * If sysfs file of new node can't create, cpu on the node
> + * can't be hot-added. There is no rollback way now.
> + * So, check by BUG_ON() to catch it reluctantly..
> + */
> + BUG_ON(ret);
> + }
How about we register the node in sysfs _before_ it is
set_node_online()'d? Effectively an empty node with no memory and no
CPUs. It might be a wee bit confusing to any user tools watching the
NUMA sysfs stuff, but I think it beats a BUG().
-- Dave
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