mm: replace __get_cpu_var uses with this_cpu_ptr

Replace places where __get_cpu_var() is used for an address calculation
with this_cpu_ptr().

Signed-off-by: Christoph Lameter <cl@linux.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index bf233b2..ddaf70b 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1496,7 +1496,7 @@
 	if (!addr)
 		return;
 	if (unlikely(in_interrupt())) {
-		struct vfree_deferred *p = &__get_cpu_var(vfree_deferred);
+		struct vfree_deferred *p = this_cpu_ptr(&vfree_deferred);
 		if (llist_add((struct llist_node *)addr, &p->list))
 			schedule_work(&p->wq);
 	} else