FDATASYNC
fflags = FDATASYNC;
fsync_range(fd, FDATASYNC, doff, dlen);
fsync_range(biop->bio_fd, FDATASYNC,
int fsflags = FDATASYNC;
if (fsync_range(fd_seed, FDATASYNC|FDISKSYNC, 0, 0) == -1) {
if (fsync_range(fd_old, FDATASYNC|FDISKSYNC, 0, 0) == -1)
if (((flags & (FDATASYNC | FFILESYNC)) == 0) ||
((~flags & (FDATASYNC | FFILESYNC)) == 0)) {
if (flags & FDATASYNC)