INVALID_WRITESET_ROOT
md->writesets[0].md.root = INVALID_WRITESET_ROOT;
md->writesets[1].md.root = INVALID_WRITESET_ROOT;
md->current_writeset->md.root = INVALID_WRITESET_ROOT;
if (md->current_writeset->md.root != INVALID_WRITESET_ROOT) {
if (md->current_writeset->md.root != INVALID_WRITESET_ROOT) {