SYNC_STATE
unlock_dev(SYNC_STATE);
unlock_dev(SYNC_STATE);
assert(flag == SYNC_STATE || flag == CACHE_STATE);
if (flag == SYNC_STATE) {
if (flag == SYNC_STATE) {
if (flag == SYNC_STATE) {
unlock_dev(SYNC_STATE);
unlock_dev(SYNC_STATE);
unlock_dev(SYNC_STATE);