diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 69827ee..f1a90ff 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -2017,6 +2017,8 @@
 void f2fs_destroy_extent_tree(struct inode *);
 bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
 void f2fs_update_extent_cache(struct dnode_of_data *);
+void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
+						pgoff_t, block_t, unsigned int);
 void init_extent_cache_info(struct f2fs_sb_info *);
 int __init create_extent_cache(void);
 void destroy_extent_cache(void);