LOP_NOSLEEP
LOP_NEWORDER | LOP_NOSLEEP, file, line, NULL);
WITNESS_LOCK(&rm->lock_object, LOP_NOSLEEP, file, line);
(flags & LOP_NOSLEEP) == 0 &&
(flags & LOP_NOSLEEP) == 0 &&
(flags & LOP_NOSLEEP) == 0 &&
(flags & LOP_NOSLEEP) == 0)) {
if ((lock->lo_flags & LO_SLEEPABLE) != 0 && (flags & LOP_NOSLEEP) == 0)