diff --git a/fs/ext4/ext4_common.h b/fs/ext4/ext4_common.h
index 5fa1719..48fd2ac 100644
--- a/fs/ext4/ext4_common.h
+++ b/fs/ext4/ext4_common.h
@@ -50,8 +50,8 @@
 
 int ext4fs_read_inode(struct ext2_data *data, int ino,
 		      struct ext2_inode *inode);
-int ext4fs_read_file(struct ext2fs_node *node, int pos,
-		unsigned int len, char *buf);
+int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, loff_t len,
+		     char *buf, loff_t *actread);
 int ext4fs_find_file(const char *path, struct ext2fs_node *rootnode,
 			struct ext2fs_node **foundnode, int expecttype);
 int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name,