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Diffstat (limited to 'fs/btrfs/volumes.c')
| -rw-r--r-- | fs/btrfs/volumes.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 306547b51a13..e084218c09d2 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3429,6 +3429,32 @@ int btrfs_cancel_balance(struct btrfs_fs_info *fs_info) return 0; } +int btrfs_create_uuid_tree(struct btrfs_fs_info *fs_info) +{ + struct btrfs_trans_handle *trans; + struct btrfs_root *tree_root = fs_info->tree_root; + struct btrfs_root *uuid_root; + + /* + * 1 - root node + * 1 - root item + */ + trans = btrfs_start_transaction(tree_root, 2); + if (IS_ERR(trans)) + return PTR_ERR(trans); + + uuid_root = btrfs_create_tree(trans, fs_info, + BTRFS_UUID_TREE_OBJECTID); + if (IS_ERR(uuid_root)) { + btrfs_abort_transaction(trans, tree_root, + PTR_ERR(uuid_root)); + return PTR_ERR(uuid_root); + } + + fs_info->uuid_root = uuid_root; + + return btrfs_commit_transaction(trans, tree_root); +} /* * shrinking a device means finding all of the device extents past * the new size, and then following the back refs to the chunks. |