diff --git a/arch/x86/mm/mm_internal.h b/arch/x86/mm/mm_internal.h
index dc79ac121774..6b563a118891 100644
--- a/arch/x86/mm/mm_internal.h
+++ b/arch/x86/mm/mm_internal.h
@@ -14,4 +14,6 @@ unsigned long kernel_physical_mapping_init(unsigned long start,
 					     unsigned long page_size_mask);
 void zone_sizes_init(void);
 
+extern int after_bootmem;
+
 #endif	/* __X86_MM_INTERNAL_H */
diff --git a/include/linux/mm.h b/include/linux/mm.h
index bcaab4e6fe91..64d5271a3d36 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1355,7 +1355,6 @@ extern void __init mmap_init(void);
 extern void show_mem(unsigned int flags);
 extern void si_meminfo(struct sysinfo * val);
 extern void si_meminfo_node(struct sysinfo *val, int nid);
-extern int after_bootmem;
 
 extern __printf(3, 4)
 void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...);