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Btrfs: disallow some operations on the device replace target device

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This patch adds some code to disallow operations on the device that
is used as the target for the device replace operation.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Stefan Behrens
2012-11-05 18:29:28 +01:00
committed by Josef Bacik
parent 5ac00addc7
commit 63a212abc2
7 changed files with 54 additions and 18 deletions
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3
fs/btrfs/super.c
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@@ -1354,7 +1354,8 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
min_stripe_size = BTRFS_STRIPE_LEN;
list_for_each_entry(device, &fs_devices->devices, dev_list) {
if (!device->in_fs_metadata || !device->bdev)
if (!device->in_fs_metadata || !device->bdev ||
device->is_tgtdev_for_dev_replace)
continue;
avail_space = device->total_bytes - device->bytes_used;