FFILESYNC
ffi->fsync_flags = (flags & FFILESYNC) ? 0 : 1;
fflags = FFILESYNC;
if (((flags & (FDATASYNC | FFILESYNC)) == 0) ||
((~flags & (FDATASYNC | FFILESYNC)) == 0)) {
if (fsync_range(offtab->ot_fd, (FFILESYNC | FDISKSYNC),
if (fsync_range(S->cloop2_fd, (FFILESYNC | FDISKSYNC), 0, S->offset)