software raid priority (systemtap)

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I'd like to know on which priority software raid works (level 1 if it matters). So I wrote simple systemtap script to do the job, but I'm not sure if I have done it correctly.

[root@asus-ux21e ~]# cat raid.stp
probe module("raid1").function("*") {
printf( "name: %s | prio: %d | nice: %d\n", task_execname(task_current()), task_prio(task_current()), task_nice(task_current()));
}

Could anyone review it, and tell me on which priority software raid works?

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