[PATCH] PPC64 Disable preemption in flush_tlb_pending

The preempt debug stuff found a place where we were using
smp_processor_id() without having preemption disabled, in
flush_tlb_pending.  This patch fixes it by using get_cpu_var and
put_cpu_var instead of the __get_cpu_var variant.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-ppc64/tlbflush.h

@@ -32,10 +32,11 @@ extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch);
 
 static inline void flush_tlb_pending(void)
 {
-	struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
+	struct ppc64_tlb_batch *batch = &get_cpu_var(ppc64_tlb_batch);
 
 	if (batch->index)
 		__flush_tlb_pending(batch);
+	put_cpu_var(ppc64_tlb_batch);
 }
 
 #define flush_tlb_mm(mm)			flush_tlb_pending()