cpumask: use mm_cpumask() wrapper: um

Makes code futureproof against the impending change to mm->cpu_vm_mask.

It's also a chance to use the new cpumask_ ops which take a pointer
(the older ones are deprecated, but there's no hurry for arch code).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/arch/um/include/asm/mmu_context.h b/arch/um/include/asm/mmu_context.h
index 54f42e8..34d8130 100644 (file)
--- a/arch/um/include/asm/mmu_context.h
+++ b/arch/um/include/asm/mmu_context.h
@@ -35,8 +35,8 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
        unsigned cpu = smp_processor_id();
 
        if(prev != next){
-               cpu_clear(cpu, prev->cpu_vm_mask);
-               cpu_set(cpu, next->cpu_vm_mask);
+               cpumask_clear_cpu(cpu, mm_cpumask(prev));
+               cpumask_set_cpu(cpu, mm_cpumask(next));
                if(next != &init_mm)
                        __switch_mm(&next->context.id);
        }