[PATCH 15/15] rbd: switch to blk-mq
From: Hannes Reinecke <hare@suse.de>
Date: 2020-01-31 10:38:19
Also in:
ceph-devel
Subsystem:
block layer, rados block device (rbd), the rest · Maintainers:
Jens Axboe, Ilya Dryomov, Linus Torvalds
Allocate one queue per CPU and get a performance boost from higher parallelism. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/block/rbd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index cc3e5116fe58..dc3b44177fea 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c@@ -5094,7 +5094,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev) rbd_dev->tag_set.queue_depth = rbd_dev->opts->queue_depth; rbd_dev->tag_set.numa_node = NUMA_NO_NODE; rbd_dev->tag_set.flags = BLK_MQ_F_SHOULD_MERGE; - rbd_dev->tag_set.nr_hw_queues = 1; + rbd_dev->tag_set.nr_hw_queues = num_present_cpus(); rbd_dev->tag_set.cmd_size = sizeof(struct rbd_img_request); err = blk_mq_alloc_tag_set(&rbd_dev->tag_set);
--
2.16.4