[05/17] nbd: pass queue_limits to blk_mq_alloc_disk

Commit Message

Christoph Hellwig Feb. 15, 2024, 7:02 a.m. UTC

Pass the few limits nbd imposes directly to blk_mq_alloc_disk instead
of setting them one at a time.

Signed-off-by: Christoph Hellwig <[e-mail]>
---
 drivers/block/nbd.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

Patch

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 30ae3cc12e7787..1038311462d083 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1783,6 +1783,12 @@  static const struct blk_mq_ops nbd_mq_ops = {
 
 static struct nbd_device *nbd_dev_add(int index, unsigned int refs)
 {
+	struct queue_limits lim = {
+		.max_hw_sectors		= 65536,
+		.max_user_sectors	= 256,
+		.max_segments		= USHRT_MAX,
+		.max_segment_size	= UINT_MAX,
+	};
 	struct nbd_device *nbd;
 	struct gendisk *disk;
 	int err = -ENOMEM;
@@ -1823,7 +1829,7 @@  static struct nbd_device *nbd_dev_add(int index, unsigned int refs)
 	if (err < 0)
 		goto out_free_tags;
 
-	disk = blk_mq_alloc_disk(&nbd->tag_set, NULL, NULL);
+	disk = blk_mq_alloc_disk(&nbd->tag_set, &lim, NULL);
 	if (IS_ERR(disk)) {
 		err = PTR_ERR(disk);
 		goto out_free_idr;
@@ -1843,11 +1849,6 @@  static struct nbd_device *nbd_dev_add(int index, unsigned int refs)
 	 * Tell the block layer that we are not a rotational device
 	 */
 	blk_queue_flag_set(QUEUE_FLAG_NONROT, disk->queue);
-	blk_queue_max_discard_sectors(disk->queue, 0);
-	blk_queue_max_segment_size(disk->queue, UINT_MAX);
-	blk_queue_max_segments(disk->queue, USHRT_MAX);
-	blk_queue_max_hw_sectors(disk->queue, 65536);
-	disk->queue->limits.max_sectors = 256;
 
 	mutex_init(&nbd->config_lock);
 	refcount_set(&nbd->config_refs, 0);