diff --git a/mm/internal.h b/mm/internal.h
index da6b9b2..3314f79 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -353,3 +353,5 @@
 extern unsigned long vm_mmap_pgoff(struct file *, unsigned long,
         unsigned long, unsigned long,
         unsigned long, unsigned long);
+
+extern void set_pageblock_order(void);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 94fc475..6c7e3bd 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4304,7 +4304,7 @@
 #ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE
 
 /* Initialise the number of pages represented by NR_PAGEBLOCK_BITS */
-static inline void __init set_pageblock_order(void)
+void __init set_pageblock_order(void)
 {
 	unsigned int order;
 
@@ -4332,7 +4332,7 @@
  * include/linux/pageblock-flags.h for the values of pageblock_order based on
  * the kernel config
  */
-static inline void set_pageblock_order(void)
+void __init set_pageblock_order(void)
 {
 }
 
diff --git a/mm/sparse.c b/mm/sparse.c
index c7bb952..950981f 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -493,6 +493,9 @@
 	struct page **map_map;
 #endif
 
+	/* Setup pageblock_order for HUGETLB_PAGE_SIZE_VARIABLE */
+	set_pageblock_order();
+
 	/*
 	 * map is using big page (aka 2M in x86 64 bit)
 	 * usemap is less one page (aka 24 bytes)