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-rw-r--r--block/blk-mq.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 9c1c1544bac3..6847f014606b 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2438,6 +2438,9 @@ static void blk_mq_map_swqueue(struct request_queue *q)
ctx = per_cpu_ptr(q->queue_ctx, i);
for (j = 0; j < set->nr_maps; j++) {
+ if (!set->map[j].nr_queues)
+ continue;
+
hctx = blk_mq_map_queue_type(q, j, i);
/*