// Store initial compaction state.
	wasCompacted := into.Compacted

	for {
		select {
		case <-done:
			return ctx.Err()
		default:
		}
		var abandonedChildren dataUsageHashMap
		if !into.Compacted {
			abandonedChildren = f.oldCache.findChildrenCopy(thisHash)
		}

		// If there are lifecycle rules for the prefix.
		_, prefix := path2BucketObjectWithBasePath(f.root, folder.name)