NFSWRITE_UNSTABLE
iomode = NFSWRITE_UNSTABLE;
if (!error && iomode == NFSWRITE_UNSTABLE) {
iomode = NFSWRITE_UNSTABLE;
commit == NFSWRITE_UNSTABLE)
commit == NFSWRITE_UNSTABLE)
if (stable == NFSWRITE_UNSTABLE)
if (stable == NFSWRITE_UNSTABLE && nfs_async == 0)