Symbol: PGO_NOWAIT
sys/uvm/uvm_vnode.c
1076
PGO_SYNCIO|PGO_NOWAIT, UIO_READ);
sys/uvm/uvm_vnode.c
1138
int lkflags = (flags & PGO_NOWAIT) ? LK_NOWAIT : 0;
sys/uvm/uvm_vnode.c
1276
KASSERT(flags & PGO_NOWAIT);