diff options
Diffstat (limited to 'fs/btrfs/volumes.c')
| -rw-r--r-- | fs/btrfs/volumes.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 361a66e2c179..27a14f1c5a7c 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1848,6 +1848,27 @@ void btrfs_rm_dev_replace_srcdev(struct btrfs_fs_info *fs_info, } call_rcu(&srcdev->rcu, free_device); + + /* + * unless fs_devices is seed fs, num_devices shouldn't go + * zero + */ + BUG_ON(!fs_devices->num_devices && !fs_devices->seeding); + + /* if this is no devs we rather delete the fs_devices */ + if (!fs_devices->num_devices) { + struct btrfs_fs_devices *tmp_fs_devices; + + tmp_fs_devices = fs_info->fs_devices; + while (tmp_fs_devices) { + if (tmp_fs_devices->seed == fs_devices) { + tmp_fs_devices->seed = fs_devices->seed; + break; + } + tmp_fs_devices = tmp_fs_devices->seed; + } + fs_devices->seed = NULL; + } } void btrfs_destroy_dev_replace_tgtdev(struct btrfs_fs_info *fs_info, |