diff --git a/fs/f2fs/extent_cache.c b/fs/f2fs/extent_cache.c
index a8b9aa29908ddb3f890a0b444e6a762927fb440f..63068b75b1bd4949ba3e456a55688871800b6c98 100644
--- a/fs/f2fs/extent_cache.c
+++ b/fs/f2fs/extent_cache.c
@@ -394,7 +394,7 @@ static struct extent_node *__insert_extent_tree(struct f2fs_sb_info *sbi,
 	return en;
 }
 
-unsigned int f2fs_update_extent_tree_range(struct inode *inode,
+static unsigned int f2fs_update_extent_tree_range(struct inode *inode,
 				pgoff_t fofs, block_t blkaddr, unsigned int len)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);