vmemmap: warn about page_structs with remote distance
David Rientjes [Thu, 6 Nov 2008 20:53:31 +0000 (12:53 -0800)]
It's insufficient to simply compare node ids when warning about offnode
page_structs since it's possible to still have local affinity.

Acked-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/sparse-vmemmap.c

index a91b5f8..a13ea64 100644 (file)
@@ -64,7 +64,7 @@ void __meminit vmemmap_verify(pte_t *pte, int node,
        unsigned long pfn = pte_pfn(*pte);
        int actual_node = early_pfn_to_nid(pfn);
 
-       if (actual_node != node)
+       if (node_distance(actual_node, node) > LOCAL_DISTANCE)
                printk(KERN_WARNING "[%lx-%lx] potential offnode "
                        "page_structs\n", start, end - 1);
 }