It seems the same issue as I ran into some time ago. Check the following thread on why it happens and how to get out of it.
http://thread.gmane.org/gmane.comp.file-systems.btrfs/3996/focus=4003 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
