On Tue, 20 Mar 2007, Andi Kleen wrote: > > > Is it possible virt_to_slab(objp)->nodeid being different from > > > pfn_to_nid(objp) ? > > > > It is possible the page allocator falls back to another node than > > requested. We would need to check that this never occurs. > > The only way to ensure that would be to set a strict mempolicy. > But I'm not sure that's a good idea -- after all you don't want > to fail an allocation in this case. > > But pfn_to_nid on the object like proposed by Eric should work anyways. > But I'm not sure the tables used for that will be more often cache hot > than the slab.
We usually use page_to_nid(). Sure this will determine the node the object resides on. But this may not be the node on which the slab is tracked since there may have been a fallback at alloc time. - 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/