#define xfs_buf_timer_centisecs xfs_params.xfs_buf_timer.val
#define xfs_buf_age_centisecs xfs_params.xfs_buf_age.val
#define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val
-#define xfs_rotorstep xfs_params.rotorstep.val
#define current_cpu() smp_processor_id()
#define current_pid() (current->pid)