diff --git a/mm/filemap.c b/mm/filemap.c
index 5357fcc..4eb958c 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1332,7 +1332,7 @@
 	struct file_ra_state *ra = &file->f_ra;
 	struct inode *inode = mapping->host;
 	struct page *page;
-	unsigned long size;
+	pgoff_t size;
 	int did_readaround = 0;
 	int ret = 0;