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-rw-r--r--include/linux/mmzone.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index d294b57a4016..ee9f7b74e613 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -435,7 +435,6 @@ extern struct pglist_data contig_page_data;
#define NODE_DATA(nid) (&contig_page_data)
#define NODE_MEM_MAP(nid) mem_map
#define MAX_NODES_SHIFT 1
-#define pfn_to_nid(pfn) (0)
#else /* CONFIG_NEED_MULTIPLE_NODES */
@@ -470,6 +469,10 @@ extern struct pglist_data contig_page_data;
#define early_pfn_to_nid(nid) (0UL)
#endif
+#ifdef CONFIG_FLATMEM
+#define pfn_to_nid(pfn) (0)
+#endif
+
#define pfn_to_section_nr(pfn) ((pfn) >> PFN_SECTION_SHIFT)
#define section_nr_to_pfn(sec) ((sec) << PFN_SECTION_SHIFT)
@@ -594,6 +597,8 @@ static inline int pfn_valid(unsigned long pfn)
*/
#ifdef CONFIG_NUMA
#define pfn_to_nid early_pfn_to_nid
+#else
+#define pfn_to_nid(pfn) (0)
#endif
#define early_pfn_valid(pfn) pfn_valid(pfn)