Seeding devices are not supposed to change any more.
Signed-off-by: Liu Bo <liubo2...@cn.fujitsu.com>
---
fs/btrfs/ioctl.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index f056469..ec2245d 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1303,6 +1303,13 @@ static noinline int btrfs_ioctl_resize(struct btrfs_root
*root,
ret = -EINVAL;
goto out_free;
}
+ if (device->fs_devices && device->fs_devices->seeding) {
+ printk(KERN_INFO "btrfs: resizer unable to apply on "
+ "seeding device %s\n", device->name);
+ ret = -EACCES;
+ goto out_free;
+ }
+
if (!strcmp(sizestr, "max"))
new_size = device->bdev->bd_inode->i_size;
else {
--
1.6.5.2
--
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