cpumask: avoid deprecated function in mm/slab.c

These days we use cpumask_empty() which takes a pointer.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Christoph Lameter <cl@linux-foundation.org>
---
 mm/slab.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/slab.c b/mm/slab.c
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1120,7 +1120,7 @@ static void __cpuinit cpuup_canceled(lon
 		if (nc)
 			free_block(cachep, nc->entry, nc->avail, node);
 
-		if (!cpus_empty(*mask)) {
+		if (!cpumask_empty(mask)) {
 			spin_unlock_irq(&l3->list_lock);
 			goto free_array_cache;
 		}