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drbd: remove ->this_bdev

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DRBD keeps a block device open just to get and set the capacity from
it.  Switch to primarily using the disk capacity as intended by the
block layer, and sync it to the bdev using revalidate_disk_size.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2020-09-25 18:06:17 +02:00
committed by Jens Axboe
parent 76cffccd60
commit 155bd9d1ab
7 changed files with 25 additions and 33 deletions
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10
drivers/block/drbd/drbd_nl.c
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@@ -996,7 +996,7 @@ drbd_determine_dev_size(struct drbd_device *device, enum dds_flags flags, struct
goto err_out;
}
if (drbd_get_capacity(device->this_bdev) != size ||
if (get_capacity(device->vdisk) != size ||
drbd_bm_capacity(device) != size) {
int err;
err = drbd_bm_resize(device, size, !(flags & DDSF_NO_RESYNC));
@@ -1933,8 +1933,7 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
/* Make sure the new disk is big enough
* (we may currently be R_PRIMARY with no local disk...) */
if (drbd_get_max_capacity(nbc) <
drbd_get_capacity(device->this_bdev)) {
if (drbd_get_max_capacity(nbc) < get_capacity(device->vdisk)) {
retcode = ERR_DISK_TOO_SMALL;
goto fail;
}
@@ -3377,7 +3376,7 @@ static void device_to_statistics(struct device_statistics *s,
s->dev_disk_flags = md->flags;
put_ldev(device);
}
s->dev_size = drbd_get_capacity(device->this_bdev);
s->dev_size = get_capacity(device->vdisk);
s->dev_read = device->read_cnt;
s->dev_write = device->writ_cnt;
s->dev_al_writes = device->al_writ_cnt;
@@ -3817,8 +3816,7 @@ static int nla_put_status_info(struct sk_buff *skb, struct drbd_device *device,
if (nla_put_u32(skb, T_sib_reason, sib ? sib->sib_reason : SIB_GET_STATUS_REPLY) ||
nla_put_u32(skb, T_current_state, device->state.i) ||
nla_put_u64_0pad(skb, T_ed_uuid, device->ed_uuid) ||
nla_put_u64_0pad(skb, T_capacity,
drbd_get_capacity(device->this_bdev)) ||
nla_put_u64_0pad(skb, T_capacity, get_capacity(device->vdisk)) ||
nla_put_u64_0pad(skb, T_send_cnt, device->send_cnt) ||
nla_put_u64_0pad(skb, T_recv_cnt, device->recv_cnt) ||
nla_put_u64_0pad(skb, T_read_cnt, device->read_cnt) ||