diff mbox series

[3/9] brd: pass queue_limits to blk_mq_alloc_disk

Message ID 20240215071055.2201424-4-hch@lst.de (mailing list archive)
State Handled Elsewhere, archived
Headers show
Series [1/9] block: pass a queue_limits argument to blk_alloc_disk | expand

Commit Message

Christoph Hellwig Feb. 15, 2024, 7:10 a.m. UTC 
Pass the queue limits directly to blk_alloc_disk instead of setting them
one at a time.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/block/brd.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

Comments

Chaitanya Kulkarni Feb. 17, 2024, 12:42 a.m. UTC | #1 
On 2/14/24 23:10, Christoph Hellwig wrote:
> Pass the queue limits directly to blk_alloc_disk instead of setting them
> one at a time.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>   

Looks good.

Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>

-ck
diff mbox series

Patch

diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index 689a3c0c31f8b4..e322cef6596bfa 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -318,6 +318,16 @@  static int brd_alloc(int i)
 	struct gendisk *disk;
 	char buf[DISK_NAME_LEN];
 	int err = -ENOMEM;
+	struct queue_limits lim = {
+		/*
+		 * This is so fdisk will align partitions on 4k, because of
+		 * direct_access API needing 4k alignment, returning a PFN
+		 * (This is only a problem on very small devices <= 4M,
+		 *  otherwise fdisk will align on 1M. Regardless this call
+		 *  is harmless)
+		 */
+		.physical_block_size	= PAGE_SIZE,
+	};
 
 	list_for_each_entry(brd, &brd_devices, brd_list)
 		if (brd->brd_number == i)
@@ -335,7 +345,7 @@  static int brd_alloc(int i)
 		debugfs_create_u64(buf, 0444, brd_debugfs_dir,
 				&brd->brd_nr_pages);
 
-	disk = brd->brd_disk = blk_alloc_disk(NULL, NUMA_NO_NODE);
+	disk = brd->brd_disk = blk_alloc_disk(&lim, NUMA_NO_NODE);
 	if (IS_ERR(disk)) {
 		err = PTR_ERR(disk);
 		goto out_free_dev;
@@ -348,15 +358,6 @@  static int brd_alloc(int i)
 	strscpy(disk->disk_name, buf, DISK_NAME_LEN);
 	set_capacity(disk, rd_size * 2);
 	
-	/*
-	 * This is so fdisk will align partitions on 4k, because of
-	 * direct_access API needing 4k alignment, returning a PFN
-	 * (This is only a problem on very small devices <= 4M,
-	 *  otherwise fdisk will align on 1M. Regardless this call
-	 *  is harmless)
-	 */
-	blk_queue_physical_block_size(disk->queue, PAGE_SIZE);
-
 	/* Tell the block layer that this is not a rotational device */
 	blk_queue_flag_set(QUEUE_FLAG_NONROT, disk->queue);
 	blk_queue_flag_set(QUEUE_FLAG_SYNCHRONOUS, disk->queue);