From 6544d229bf433b755e77800002e078e54cd9b42b Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 2 Dec 2018 17:46:28 +0100 Subject: [PATCH] block: enable polling by default if a poll map is initalized If the user did setup polling in the driver we should not require another know in the block layer to enable it. Reviewed-by: Sagi Grimberg Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- block/blk-mq.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/block/blk-mq.c b/block/blk-mq.c index 50d529602e05..eabc7fcd96db 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2826,6 +2826,8 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set, q->tag_set = set; q->queue_flags |= QUEUE_FLAG_MQ_DEFAULT; + if (set->nr_maps > HCTX_TYPE_POLL) + blk_queue_flag_set(QUEUE_FLAG_POLL, q); if (!(set->flags & BLK_MQ_F_SG_MERGE)) blk_queue_flag_set(QUEUE_FLAG_NO_SG_MERGE, q);