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authorChristoph Hellwig <hch@lst.de>2020-11-16 17:57:01 +0300
committerJens Axboe <axboe@kernel.dk>2020-11-16 18:34:14 +0300
commit2ebcabf3dba50f61850efec9a331bd061c6333e0 (patch)
tree580d924fb6bc06d1dd94d7fd6cc3d900bc7cd886 /drivers/block/nbd.c
parentdcbddf541f18e367ac9cdad8e223d382cd303161 (diff)
downloadlinux-2ebcabf3dba50f61850efec9a331bd061c6333e0.tar.xz
nbd: use set_capacity_and_notify
Use set_capacity_and_notify to update the disk and block device sizes and send a RESIZE uevent to userspace. Note that blktests relies on uevents being sent also for updates that did not change the device size, so the explicit kobject_uevent remains for that case. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/nbd.c')
-rw-r--r--drivers/block/nbd.c15
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 7478a5e02bc1..45b0423ef2c5 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -299,8 +299,6 @@ static void nbd_size_clear(struct nbd_device *nbd)
static int nbd_set_size(struct nbd_device *nbd, loff_t bytesize,
loff_t blksize)
{
- struct block_device *bdev;
-
if (!blksize)
blksize = NBD_DEF_BLKSIZE;
if (blksize < 512 || blksize > PAGE_SIZE || !is_power_of_2(blksize))
@@ -320,16 +318,9 @@ static int nbd_set_size(struct nbd_device *nbd, loff_t bytesize,
blk_queue_logical_block_size(nbd->disk->queue, blksize);
blk_queue_physical_block_size(nbd->disk->queue, blksize);
- set_capacity(nbd->disk, bytesize >> 9);
- bdev = bdget_disk(nbd->disk, 0);
- if (bdev) {
- if (bdev->bd_disk)
- bd_set_nr_sectors(bdev, bytesize >> 9);
- else
- set_bit(GD_NEED_PART_SCAN, &nbd->disk->state);
- bdput(bdev);
- }
- kobject_uevent(&nbd_to_dev(nbd)->kobj, KOBJ_CHANGE);
+ set_bit(GD_NEED_PART_SCAN, &nbd->disk->state);
+ if (!set_capacity_and_notify(nbd->disk, bytesize >> 9))
+ kobject_uevent(&nbd_to_dev(nbd)->kobj, KOBJ_CHANGE);
return 0;
}