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authorChristoph Hellwig <hch@lst.de>2018-12-02 19:46:28 +0300
committerJens Axboe <axboe@kernel.dk>2018-12-04 21:38:19 +0300
commit6544d229bf433b755e77800002e078e54cd9b42b (patch)
treed4c1008a4d1b50e9d085f65af4e17fcee4677491 /block/blk-mq.c
parent376f7ef8bfeaee3993c2e85df1bbaa06725b9342 (diff)
downloadlinux-6544d229bf433b755e77800002e078e54cd9b42b.tar.xz
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 <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.c')
-rw-r--r--block/blk-mq.c2
1 files changed, 2 insertions, 0 deletions
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);