diff --git a/mm/internal.h b/mm/internal.h
index a25424a24e0ce5..83c65f28cf6c84 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -201,7 +201,12 @@ static inline int mlocked_vma_newpage(struct vm_area_struct *vma,
 		return 0;
 
 	if (!TestSetPageMlocked(page)) {
-		mod_zone_page_state(page_zone(page), NR_MLOCK,
+		/*
+		 * We use the irq-unsafe __mod_zone_page_stat because
+		 * this counter is not modified from interrupt context, and the
+		 * pte lock is held(spinlock), which implies preemtion disabled.
+		 */
+		__mod_zone_page_state(page_zone(page), NR_MLOCK,
 				    hpage_nr_pages(page));
 		count_vm_event(UNEVICTABLE_PGMLOCKED);
 	}
diff --git a/mm/rmap.c b/mm/rmap.c
index 46c572745229c3..3d678aa4a2df9e 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -982,6 +982,11 @@ void do_page_add_anon_rmap(struct page *page,
 {
 	int first = atomic_inc_and_test(&page->_mapcount);
 	if (first) {
+		/*
+		 * We use the irq-unsafe __{inc|mod}_zone_page_stat because
+		 * these counters are not modified in interrupt context, and
+		 * pte lock(a spinlock) is held, which implies preemtion disabled.
+		 */
 		if (PageTransHuge(page))
 			__inc_zone_page_state(page,
 					      NR_ANON_TRANSPARENT_HUGEPAGES);
@@ -1073,6 +1078,11 @@ void page_remove_rmap(struct page *page)
 	/*
 	 * Hugepages are not counted in NR_ANON_PAGES nor NR_FILE_MAPPED
 	 * and not charged by memcg for now.
+	 *
+	 * We use the irq-unsafe __{inc|mod}_zone_page_stat because
+	 * these counters are not modified in interrupt context, and
+	 * these counters are not modified in interrupt context, and
+	 * pte lock(a spinlock) is held, which implies preemtion disabled.
 	 */
 	if (unlikely(PageHuge(page)))
 		goto out;
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 376bd2d2148247..b37bd49bfd55e2 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -207,7 +207,9 @@ void set_pgdat_percpu_threshold(pg_data_t *pgdat,
 }
 
 /*
- * For use when we know that interrupts are disabled.
+ * For use when we know that interrupts are disabled,
+ * or when we know that preemption is disabled and that
+ * particular counter cannot be updated from interrupt context.
  */
 void __mod_zone_page_state(struct zone *zone, enum zone_stat_item item,
 				int delta)