diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index a6e300732ec7dfb10cebba3141cd2790cee9875a..fc4b5cdb6c2dced24ab297cf14a16066fc70d676 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -637,8 +637,7 @@ typedef struct pglist_data {
 #if defined(CONFIG_MEMORY_HOTPLUG) || defined(CONFIG_DEFERRED_STRUCT_PAGE_INIT)
 	/*
 	 * Must be held any time you expect node_start_pfn, node_present_pages
-	 * or node_spanned_pages stay constant.  Holding this will also
-	 * guarantee that any pfn_valid() stays that way.
+	 * or node_spanned_pages stay constant.
 	 *
 	 * pgdat_resize_lock() and pgdat_resize_unlock() are provided to
 	 * manipulate node_size_lock without checking for CONFIG_MEMORY_HOTPLUG
diff --git a/mm/sparse.c b/mm/sparse.c
index 691544a2814cd5a664516e6058df2d7b161965f7..7323a03fbc39ca9a39a5e885562bd8df2177c269 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -685,7 +685,6 @@ int __meminit sparse_add_one_section(struct pglist_data *pgdat,
 	struct mem_section *ms;
 	struct page *memmap;
 	unsigned long *usemap;
-	unsigned long flags;
 	int ret;
 
 	/*
@@ -705,8 +704,6 @@ int __meminit sparse_add_one_section(struct pglist_data *pgdat,
 		return -ENOMEM;
 	}
 
-	pgdat_resize_lock(pgdat, &flags);
-
 	ms = __pfn_to_section(start_pfn);
 	if (ms->section_mem_map & SECTION_MARKED_PRESENT) {
 		ret = -EEXIST;
@@ -723,7 +720,6 @@ int __meminit sparse_add_one_section(struct pglist_data *pgdat,
 	sparse_init_one_section(ms, section_nr, memmap, usemap);
 
 out:
-	pgdat_resize_unlock(pgdat, &flags);
 	if (ret < 0) {
 		kfree(usemap);
 		__kfree_section_memmap(memmap, altmap);
@@ -794,10 +790,8 @@ void sparse_remove_one_section(struct zone *zone, struct mem_section *ms,
 		unsigned long map_offset, struct vmem_altmap *altmap)
 {
 	struct page *memmap = NULL;
-	unsigned long *usemap = NULL, flags;
-	struct pglist_data *pgdat = zone->zone_pgdat;
+	unsigned long *usemap = NULL;
 
-	pgdat_resize_lock(pgdat, &flags);
 	if (ms->section_mem_map) {
 		usemap = ms->pageblock_flags;
 		memmap = sparse_decode_mem_map(ms->section_mem_map,
@@ -805,7 +799,6 @@ void sparse_remove_one_section(struct zone *zone, struct mem_section *ms,
 		ms->section_mem_map = 0;
 		ms->pageblock_flags = NULL;
 	}
-	pgdat_resize_unlock(pgdat, &flags);
 
 	clear_hwpoisoned_pages(memmap + map_offset,
 			PAGES_PER_SECTION - map_offset);