* broadcast messages that have been lost since the
* last call.
* @msg_size: Filled by the kernel with the actual message size. This
- * mirrors the 'size' member of the message stored at
- * @offset, but allows callers to access it without mapping
- * their pool. By using @msg_size and @offset, you can map
- * only the message itself, not the whole pool.
+ * is the full size of the slice placed at @offset. It
+ * includes the memory used for the kdbus_msg object, but
+ * also for all appended VECs. By using @msg_size and
+ * @offset, you can map a single message, instead of
+ * mapping the whole pool.
*
* This struct is used with the KDBUS_CMD_MSG_RECV ioctl.
*/