[PATCH] Remove set_fs() in stop_machine()

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From: Brian Gerst <bgerst@didntduck.org>

Call sched_setscheduler() directly instead.
Signed-off-by: NBrian Gerst <bgerst@didntduck.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

kernel/stop_machine.c

@@ -87,13 +87,9 @@ static int stop_machine(void)
 {
 	int i, ret = 0;
 	struct sched_param param = { .sched_priority = MAX_RT_PRIO-1 };
-	mm_segment_t old_fs = get_fs();
 
 	/* One high-prio thread per cpu.  We'll do this one. */
-	set_fs(KERNEL_DS);
-	sys_sched_setscheduler(current->pid, SCHED_FIFO,
-				(struct sched_param __user *)&param);
-	set_fs(old_fs);
+	sched_setscheduler(current, SCHED_FIFO, &param);
 
 	atomic_set(&stopmachine_thread_ack, 0);
 	stopmachine_num_threads = 0;