Hi Peng, please do not add another different ioctl. I would much prefer to bring the yscall forward. Alternatively please follow the btrfs ioctl, which XFS has been picking up as well. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html