diff --git a/include/linux/fs.h b/include/linux/fs.h
index d883aa1..ede84fa 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2345,6 +2345,8 @@
 extern ssize_t simple_read_from_buffer(void __user *to, size_t count,
 			loff_t *ppos, const void *from, size_t available);
 
+extern int simple_fsync(struct file *, struct dentry *, int);
+
 #ifdef CONFIG_MIGRATION
 extern int buffer_migrate_page(struct address_space *,
 				struct page *, struct page *);