sbitmap: allocate wait queues on a specific node

The original bt_alloc() we converted from was using kzalloc(), not
kzalloc_node(), to allocate the wait queues. This was probably an
oversight, so fix it for sbitmap_queue_init_node().
Signed-off-by: NOmar Sandoval <osandov@fb.com>
Signed-off-by: NJens Axboe <axboe@fb.com>

lib/sbitmap.c

@@ -208,7 +208,7 @@ int sbitmap_queue_init_node(struct sbitmap_queue *sbq, unsigned int depth,
 	sbq->wake_batch = sbq_calc_wake_batch(depth);
 	atomic_set(&sbq->wake_index, 0);
 
-	sbq->ws = kzalloc(SBQ_WAIT_QUEUES * sizeof(*sbq->ws), flags);
+	sbq->ws = kzalloc_node(SBQ_WAIT_QUEUES * sizeof(*sbq->ws), flags, node);
 	if (!sbq->ws) {
 		sbitmap_free(&sbq->sb);
 		return -ENOMEM;