REQ_OP_LAST
BUILD_BUG_ON((__force u32)REQ_OP_LAST >= (1 << REQ_OP_BITS));
return REQ_OP_LAST;
if (*op == REQ_OP_LAST)
enum req_op op = REQ_OP_LAST;
if (op == REQ_OP_LAST)
return REQ_OP_LAST;
if (op == REQ_OP_LAST) {