diff --git a/fs/internal.h b/fs/internal.h
index b29c46e..ae47c48 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -135,3 +135,8 @@
 extern int get_nr_dirty_inodes(void);
 extern void evict_inodes(struct super_block *);
 extern int invalidate_inodes(struct super_block *, bool);
+
+/*
+ * dcache.c
+ */
+extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);