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-rw-r--r--include/asm-x86_64/mmzone.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/include/asm-x86_64/mmzone.h b/include/asm-x86_64/mmzone.h
index 8d48dc7e43a..69baaa8a3ce 100644
--- a/include/asm-x86_64/mmzone.h
+++ b/include/asm-x86_64/mmzone.h
@@ -17,16 +17,15 @@
/* Simple perfect hash to map physical addresses to node numbers */
extern int memnode_shift;
extern u8 memnodemap[NODEMAPSIZE];
-extern int maxnode;
extern struct pglist_data *node_data[];
static inline __attribute__((pure)) int phys_to_nid(unsigned long addr)
{
- int nid;
+ unsigned nid;
VIRTUAL_BUG_ON((addr >> memnode_shift) >= NODEMAPSIZE);
nid = memnodemap[addr >> memnode_shift];
- VIRTUAL_BUG_ON(nid > maxnode);
+ VIRTUAL_BUG_ON(nid >= MAX_NUMNODES || !node_data[nid]);
return nid;
}