[PATCH] setscheduler fix

From: Joe Korty <joe.korty@ccur.com>

task_running(rq,p) is equivalent to (rq->curr == p) only for some
architectures.

kernel/sched.c

@@ -2184,7 +2184,7 @@ static int setscheduler(pid_t pid, int policy, struct sched_param __user *param)
 		 * our priority decreased, or if we are not currently running on
 		 * this runqueue and our priority is higher than the current's
 		 */
-		if (rq->curr == p) {
+		if (task_running(rq, p)) {
 			if (p->prio > oldprio)
 				resched_task(rq->curr);
 		} else if (p->prio < rq->curr->prio)