diff --git a/fs/internal.h b/fs/internal.h
index 2be46ea..b649565 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -121,7 +121,7 @@
  */
 extern void inode_wb_list_del(struct inode *inode);
 
-extern int get_nr_dirty_inodes(void);
+extern long get_nr_dirty_inodes(void);
 extern void evict_inodes(struct super_block *);
 extern int invalidate_inodes(struct super_block *, bool);