make dmapool code use __set_current_state()

Signed-off-by: Arjan van de Ven <arjan@Linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/base/dmapool.c

@@ -302,7 +302,7 @@ restart:
 		if (mem_flags & __GFP_WAIT) {
 			DECLARE_WAITQUEUE (wait, current);
 
-			current->state = TASK_INTERRUPTIBLE;
+			__set_current_state(TASK_INTERRUPTIBLE);
 			add_wait_queue (&pool->waitq, &wait);
 			spin_unlock_irqrestore (&pool->lock, flags);