Messages in this thread | | | Date | Tue, 30 Jun 2009 08:47:35 +0800 | From | Shaohua Li <> | Subject | Re: + memory-hotplug-alloc-page-from-other-node-in-memory-online.patch added to -mm tree |
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On Tue, Jun 30, 2009 at 06:07:16AM +0800, Christoph Lameter wrote: > On Mon, 29 Jun 2009, akpm@linux-foundation.org wrote: > > > To initialize hotadded node, some pages are allocated. At that time, the > > node hasn't memory, this makes the allocation always fail. In such case, > > let's allocate pages from other nodes. > > Thats bad. Could you populate the buddy list with some large pages from > the beginning of the node instead of doing this special casing? The > vmemmap and other stuff really should come from the node that is added. > Otherwise off node memory accesses will occur constantly for processors on > that node. Ok, this is preferred. But the node hasn't any memory present at that time, let me check how could we do it.
Thanks, Shaohua
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