MAX_IOVEC          40 test/datatype/large_data.c     struct iovec iov[MAX_IOVEC];
MAX_IOVEC          41 test/datatype/large_data.c     uint32_t iov_count = MAX_IOVEC, i;
MAX_IOVEC          64 test/datatype/large_data.c         iov_count = MAX_IOVEC;  /* number of available iov */