On Tue, 13 Feb 2007 09:29:49 +0100 Andi Kleen <[EMAIL PROTECTED]> wrote:
> > > In my understanding, a "node" is a block of cpu, memory, devices. > > and there could be cpu-only-node, memory-only-node, device-only-node... > > The trouble with this is that you'll need to harden large parts > of code against these. Especially a NULL pgdat is something quite > dangerous. You could make it a dummy empty pgdat, but just assigning it > nearby seems easier. Ah...It seems I didn't explain enough. Now, memorly-less-node has its own pgdat, for its own zonelist. All *online* node has its own NODA_DATA(nid). NOD_DATA(nid) is always valid pointer if a node is online. NODE_DATA(nid)->present_pages can be 0 even if a node is online, I call this as memory-less-node. Thanks, -Kame - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
