diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h
index 59d4fc7..59488f2 100644
--- a/include/linux/fdtable.h
+++ b/include/linux/fdtable.h
@@ -123,6 +123,8 @@
 		      unsigned start, unsigned end, unsigned flags);
 extern void __fd_install(struct files_struct *files,
 		      unsigned int fd, struct file *file);
+extern int __close_fd(struct files_struct *files,
+		      unsigned int fd);
 
 extern struct kmem_cache *files_cachep;