diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 02cf30bd01cd..d51c2087c498 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5651,16 +5651,6 @@ void __init sparse_memory_present_with_active_regions(int nid)
 	unsigned long start_pfn, end_pfn;
 	int i, this_nid;
 
-#ifdef CONFIG_SPARSEMEM_EXTREME
-	if (!mem_section) {
-		unsigned long size, align;
-
-		size = sizeof(struct mem_section) * NR_SECTION_ROOTS;
-		align = 1 << (INTERNODE_CACHE_SHIFT);
-		mem_section = memblock_virt_alloc(size, align);
-	}
-#endif
-
 	for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, &this_nid)
 		memory_present(this_nid, start_pfn, end_pfn);
 }
diff --git a/mm/sparse.c b/mm/sparse.c
index 044138852baf..60805abf98af 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -207,6 +207,16 @@ void __init memory_present(int nid, unsigned long start, unsigned long end)
 {
 	unsigned long pfn;
 
+#ifdef CONFIG_SPARSEMEM_EXTREME
+	if (unlikely(!mem_section)) {
+		unsigned long size, align;
+
+		size = sizeof(struct mem_section) * NR_SECTION_ROOTS;
+		align = 1 << (INTERNODE_CACHE_SHIFT);
+		mem_section = memblock_virt_alloc(size, align);
+	}
+#endif
+
 	start &= PAGE_SECTION_MASK;
 	mminit_validate_memmodel_limits(&start, &end);
 	for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION) {