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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/extent-tree.c
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@@ -7468,7 +7468,8 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr)
* check to make sure we can actually find a chunk with enough
* space to fit our block group in.
*/
if (device->total_bytes > device->bytes_used + min_free) {
if (device->total_bytes > device->bytes_used + min_free &&
!device->is_tgtdev_for_dev_replace) {
ret = find_free_dev_extent(device, min_free,
&dev_offset, NULL);
if (!ret)