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Btrfs: fix resize a readonly device

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We should not resize a readonly device, fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
This commit is contained in:
Miao Xie
2012-12-21 09:19:51 +00:00
committed by Josef Bacik
parent 5c39da5b6c
commit dba60f3f5d
1 changed files with 4 additions and 2 deletions
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6
fs/btrfs/ioctl.c
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@@ -1362,6 +1362,7 @@ static noinline int btrfs_ioctl_resize(struct file *file,
printk(KERN_INFO "btrfs: resizing devid %llu\n", printk(KERN_INFO "btrfs: resizing devid %llu\n",
(unsigned long long)devid); (unsigned long long)devid);
} }
device = btrfs_find_device(root->fs_info, devid, NULL, NULL); device = btrfs_find_device(root->fs_info, devid, NULL, NULL);
if (!device) { if (!device) {
printk(KERN_INFO "btrfs: resizer unable to find device %llu\n", printk(KERN_INFO "btrfs: resizer unable to find device %llu\n",
@@ -1369,9 +1370,10 @@ static noinline int btrfs_ioctl_resize(struct file *file,
ret = -EINVAL; ret = -EINVAL;
goto out_free; goto out_free;
} }
if (device->fs_devices && device->fs_devices->seeding) {
if (!device->writeable) {
printk(KERN_INFO "btrfs: resizer unable to apply on " printk(KERN_INFO "btrfs: resizer unable to apply on "
"seeding device %llu\n", "readonly device %llu\n",
(unsigned long long)devid); (unsigned long long)devid);
ret = -EINVAL; ret = -EINVAL;
goto out_free; goto out_free;