diff --git a/include/linux/taskstats.h b/include/linux/taskstats.h
index 15c64037be1bedc601414ebf16787f8e24b7b009..3fced4798255101b1ec8f19aeb5905cb449bc8d2 100644
--- a/include/linux/taskstats.h
+++ b/include/linux/taskstats.h
@@ -31,7 +31,7 @@
  */
 
 
-#define TASKSTATS_VERSION	2
+#define TASKSTATS_VERSION	3
 #define TS_COMM_LEN		32	/* should be >= TASK_COMM_LEN
 					 * in linux/sched.h */
 
@@ -140,6 +140,12 @@ struct taskstats {
 	__u64	read_syscalls;		/* read syscalls */
 	__u64	write_syscalls;		/* write syscalls */
 	/* Extended accounting fields end */
+
+#define TASKSTATS_HAS_IO_ACCOUNTING
+	/* Per-task storage I/O accounting starts */
+	__u64	read_bytes;		/* bytes of read I/O */
+	__u64	write_bytes;		/* bytes of write I/O */
+	__u64	cancelled_write_bytes;	/* bytes of cancelled write I/O */
 };
 
 
diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 96f77013d3f038ea03b688c448e2ef69a77aee06..baacc36914152271e01343e5a4de233e7b8780ba 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -96,6 +96,15 @@ void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
 	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