diff --git a/mm/sparse.c b/mm/sparse.c
index 6b5fb76..66f0fd9 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -796,8 +796,10 @@
 void sparse_remove_one_section(struct zone *zone, struct mem_section *ms)
 {
 	struct page *memmap = NULL;
-	unsigned long *usemap = NULL;
+	unsigned long *usemap = NULL, flags;
+	struct pglist_data *pgdat = zone->zone_pgdat;
 
+	pgdat_resize_lock(pgdat, &flags);
 	if (ms->section_mem_map) {
 		usemap = ms->pageblock_flags;
 		memmap = sparse_decode_mem_map(ms->section_mem_map,
@@ -805,6 +807,7 @@
 		ms->section_mem_map = 0;
 		ms->pageblock_flags = NULL;
 	}
+	pgdat_resize_unlock(pgdat, &flags);
 
 	clear_hwpoisoned_pages(memmap, PAGES_PER_SECTION);
 	free_section_usemap(memmap, usemap);