diff --git a/mm/slub.c b/mm/slub.c
index ac836d3..bccfb6a 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1219,7 +1219,7 @@
 
 static __always_inline void slab_unlock(struct page *page)
 {
-	bit_spin_unlock(PG_locked, &page->flags);
+	__bit_spin_unlock(PG_locked, &page->flags);
 }
 
 static __always_inline int slab_trylock(struct page *page)