Hi Mike, This RFC patch-set expands on your recently proposed cluster API changes to add rbd_tcm COMPARE AND WRITE support.
Rather than offloading the entire COMPARE AND WRITE operation to the cluster back-end, these changes extend on the existing local semaphore usage, to additionally take an RBD COMPARE AND WRITE device lock. RBD device lock acquisition is handled via a newly added rbd_tcm workqueue. I'd appreciate feedback on the overall direction of these changes. Cheers, David -- drivers/block/Kconfig | 3 +- drivers/block/rbd.h | 3 + drivers/block/rbd_main.c | 26 ++-- drivers/block/rbd_tcm.c | 208 +++++++++++++++++++++++++++ drivers/target/target_core_sbc.c | 28 +++- include/target/target_core_cluster.h | 4 + 6 files changed, 253 insertions(+), 19 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
