diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 261182468ea24d99521cacc95c765114b90eb1b0..b24275914bda101aeb306bc9bc1a79126fc33559 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -477,7 +477,7 @@ static struct inode *hugetlbfs_get_root(struct super_block *sb,
  * annotation because huge_pmd_share() does an allocation under
  * i_mmap_mutex.
  */
-struct lock_class_key hugetlbfs_i_mmap_mutex_key;
+static struct lock_class_key hugetlbfs_i_mmap_mutex_key;
 
 static struct inode *hugetlbfs_get_inode(struct super_block *sb,
 					struct inode *dir,