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[RFC,03/21] nbd: use lib tagset init helper

Message ID 20221005032257.80681-4-kch@nvidia.com (mailing list archive)
State New, archived
Headers show
Series block: add and use init tagset helper | expand

Commit Message

Chaitanya Kulkarni Oct. 5, 2022, 3:22 a.m. UTC 
Use the block layer helper to initialize the common fields of tag_set
such as blk_mq_ops, number of h/w queues, queue depth, command size,
numa_node, timeout, BLK_MQ_F_XXX flags, driver data. This initialization
is spread all over the block drivers. This avoids the code repetation of
the inialization code of the tag set in current block drivers and any
future ones.

Signed-off-by: Chaitanya Kulkarni <kch@nvidia.com>
---
 drivers/block/nbd.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)
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Patch

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 2a2a1d996a57..01be68d1f722 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1749,14 +1749,9 @@  static struct nbd_device *nbd_dev_add(int index, unsigned int refs)
 	if (!nbd)
 		goto out;
 
-	nbd->tag_set.ops = &nbd_mq_ops;
-	nbd->tag_set.nr_hw_queues = 1;
-	nbd->tag_set.queue_depth = 128;
-	nbd->tag_set.numa_node = NUMA_NO_NODE;
-	nbd->tag_set.cmd_size = sizeof(struct nbd_cmd);
-	nbd->tag_set.flags = BLK_MQ_F_SHOULD_MERGE |
-		BLK_MQ_F_BLOCKING;
-	nbd->tag_set.driver_data = nbd;
+	blk_mq_init_tag_set(&nbd->tag_set, &nbd_mq_ops, 1, 128,
+			sizeof(struct nbd_cmd), NUMA_NO_NODE, 0,
+			BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING, nbd);
 	INIT_WORK(&nbd->remove_work, nbd_dev_remove_work);
 	nbd->backend = NULL;