diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 96f7701..baacc369 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -96,6 +96,15 @@
 	stats->write_char	= p->wchar;
 	stats->read_syscalls	= p->syscr;
 	stats->write_syscalls	= p->syscw;
+#ifdef CONFIG_TASK_IO_ACCOUNTING
+	stats->read_bytes	= p->ioac.read_bytes;
+	stats->write_bytes	= p->ioac.write_bytes;
+	stats->cancelled_write_bytes = p->ioac.cancelled_write_bytes;
+#else
+	stats->read_bytes	= 0;
+	stats->write_bytes	= 0;
+	stats->cancelled_write_bytes = 0;
+#endif
 }
 #undef KB
 #undef MB