ref: 7ffe9c7f4214be8ae5e1e0357585b2df0c05cf41
dir: /sys/src/libthread/ioflush.c/
#include <u.h> #include <libc.h> #include <thread.h> #include "threadimpl.h" long _ioflush(va_list *) { return 0; } int ioflush(Ioproc *io) { return iocall(io, _ioflush); }