Steven, please pick the following three patches which address the CPU hotplug nightmare on RT. I still hate them, but we want to have that addressed in the stable series. Aside of that there are the outstanding issues with btrfs and io unplug. The missing spin_lock_init() fix should reach you via mainline stable updates. Mike and Chris are looking into that interesting locking features. The io unplug thing stays mysterious, but as I just wrote in that thread, my patch to address it is fundamentally wrong. :( I'm off for a week of vacation, so do not expect any further updates from my side. If Mike and Chris come up with an agreed solution for the locking issue, please pick it up yourself. Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html