diff options
| -rw-r--r-- | fs/btrfs/disk-io.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index e532892431f4..e53a5bb85670 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1754,11 +1754,18 @@ static void backup_super_roots(struct btrfs_fs_info *info) btrfs_set_backup_extent_root_level(root_backup, btrfs_header_level(info->extent_root->node)); - btrfs_set_backup_fs_root(root_backup, info->fs_root->node->start); - btrfs_set_backup_fs_root_gen(root_backup, + /* + * we might commit during log recovery, which happens before we set + * the fs_root. Make sure it is valid before we fill it in. + */ + if (info->fs_root && info->fs_root->node) { + btrfs_set_backup_fs_root(root_backup, + info->fs_root->node->start); + btrfs_set_backup_fs_root_gen(root_backup, btrfs_header_generation(info->fs_root->node)); - btrfs_set_backup_fs_root_level(root_backup, + btrfs_set_backup_fs_root_level(root_backup, btrfs_header_level(info->fs_root->node)); + } btrfs_set_backup_dev_root(root_backup, info->dev_root->node->start); btrfs_set_backup_dev_root_gen(root_backup, |