Hi Johan, > This patch set converts the LTK and IRK lists to use RCU which > eliminates the need to always hold the hdev lock while accessing these > lists. This helps us fix more lockdep warnings arising from hdev locking > in smp.c. > > What this patch set doesn't fix is the general problem of the SMP > context holding references to list entries without any guarantee that > those references stay valid if some other thread goes and removes the > entries. For this the proper fix would probably be to introduce kref for > the entries to ensure that external references stay valid. However, > since that requires considerably more code it's better to first merge > most lists into a single "remote device info" list that's protected both > by kref and RCU. > > Johan > > ---------------------------------------------------------------- > Johan Hedberg (4): > Bluetooth: Convert LTK list to RCU > Bluetooth: Convert IRK list to RCU > Bluetooth: Remove unnecessary hdev locking in smp.c > Bluetooth: Add debug logs to help track locking issues > > include/net/bluetooth/hci_core.h | 2 + > net/bluetooth/hci_core.c | 88 ++++++++++++++++++++++---------------- > net/bluetooth/hci_event.c | 4 +- > net/bluetooth/l2cap_core.c | 3 +- > net/bluetooth/l2cap_sock.c | 10 ++++- > net/bluetooth/smp.c | 27 ++++-------- > 6 files changed, 75 insertions(+), 59 deletions(-) all 4 patches have been applied to bluetooth-next tree. Regards Marcel -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
