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null_blk: cleanup null_gendisk_register

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Use a saner size calculation, and do a trivial cleanup on the zone
revalidation to prepare to future changes.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2019-12-03 10:39:02 +01:00 committed by Jens Axboe
parent 5c4bd1f40c
commit 979d54475e
1 changed files with 5 additions and 6 deletions
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11
drivers/block/null_blk_main.c
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@ -1559,14 +1559,14 @@ static int init_driver_queues(struct nullb *nullb)
static int null_gendisk_register(struct nullb *nullb) static int null_gendisk_register(struct nullb *nullb)
{ {
sector_t size = ((sector_t)nullb->dev->size * SZ_1M) >> SECTOR_SHIFT;
struct gendisk *disk; struct gendisk *disk;
sector_t size; int ret;
disk = nullb->disk = alloc_disk_node(1, nullb->dev->home_node); disk = nullb->disk = alloc_disk_node(1, nullb->dev->home_node);
if (!disk) if (!disk)
return -ENOMEM; return -ENOMEM;
size = (sector_t)nullb->dev->size * 1024 * 1024ULL; set_capacity(disk, size);
set_capacity(disk, size >> 9);
disk->flags |= GENHD_FL_EXT_DEVT | GENHD_FL_SUPPRESS_PARTITION_INFO; disk->flags |= GENHD_FL_EXT_DEVT | GENHD_FL_SUPPRESS_PARTITION_INFO;
disk->major = null_major; disk->major = null_major;
@ -1577,9 +1577,8 @@ static int null_gendisk_register(struct nullb *nullb)
strncpy(disk->disk_name, nullb->disk_name, DISK_NAME_LEN); strncpy(disk->disk_name, nullb->disk_name, DISK_NAME_LEN);
if (nullb->dev->zoned) { if (nullb->dev->zoned) {
int ret = blk_revalidate_disk_zones(disk); ret = blk_revalidate_disk_zones(disk);
if (ret)
if (ret != 0)
return ret; return ret;
} }