Re: [2.6.20][PATCH] fix mempolicy error check on a system with memory-less-node

On Wed, 7 Feb 2007 12:32:36 +0100
Andi Kleen <[email protected]> wrote:

> 
> > How for_each_online_node(nid) works ? it can handle alias-nid ?
> > 
> > ==
> > 	for_each_online_node(nid) {
> > 		pgdat = NODE_DATA(nid);
> > ==
> > This code never accesses pgdat_for_A twice ?
> 
> It would. If there's a problem it could be changed to walk the pgdat lists instead,
> but at least when x86-64 still did it there wasn't.
> 

Thank you for discussion. 

I'll try another hot-fix just for this NULL pointer access problem,
which is not invasive and not costly.

Thanks,
-Kame


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• References:
  • [2.6.20][PATCH] fix mempolicy error check on a system with memory-less-node
    • From: KAMEZAWA Hiroyuki <[email protected]>
  • Re: [2.6.20][PATCH] fix mempolicy error check on a system with memory-less-node
    • From: Andi Kleen <[email protected]>
  • Re: [2.6.20][PATCH] fix mempolicy error check on a system with memory-less-node
    • From: KAMEZAWA Hiroyuki <[email protected]>
  • Re: [2.6.20][PATCH] fix mempolicy error check on a system with memory-less-node
    • From: Andi Kleen <[email protected]>

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