REQ_F_LINK_TIMEOUT
if (head->flags & REQ_F_LINK_TIMEOUT) {
#define IO_DISARM_MASK (REQ_F_ARM_LTIMEOUT | REQ_F_LINK_TIMEOUT | REQ_F_FAIL)
req->flags |= REQ_F_LINK_TIMEOUT;
if (req->flags & REQ_F_LINK_TIMEOUT) {
} else if (req->flags & REQ_F_LINK_TIMEOUT) {