diff --git a/include/linux/fs.h b/include/linux/fs.h
index cdf9495..0169ed3 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1429,6 +1429,11 @@
 	 */
 	char __rcu *s_options;
 	const struct dentry_operations *s_d_op; /* default d_op for dentries */
+
+	/*
+	 * Saved pool identifier for cleancache (-1 means none)
+	 */
+	int cleancache_poolid;
 };
 
 extern struct timespec current_fs_time(struct super_block *sb);