diff --git a/mm/readahead.c b/mm/readahead.c
index 133b6d5..a224182 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -210,6 +210,7 @@
 	if (unlikely(!mapping->a_ops->readpage && !mapping->a_ops->readpages))
 		return -EINVAL;
 
+	nr_to_read = max_sane_readahead(nr_to_read);
 	while (nr_to_read) {
 		int err;