diff mbox series

[13/13] block: enable polling by default if a poll map is initalized

Message ID 20181129191310.9795-14-hch@lst.de (mailing list archive)
State New, archived
Headers show
Series [01/13] block: move queues types to the block layer | expand

Commit Message

Christoph Hellwig Nov. 29, 2018, 7:13 p.m. UTC 
If the user did setup polling in the driver we should not require
another know in the block layer to enable it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 block/blk-mq.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 9c90c5038d07..a550a00ac00c 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2811,6 +2811,8 @@  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);