DIAG_TRANSFER_LIMIT
alloc_nbytes = min_t(unsigned int, nbytes, DIAG_TRANSFER_LIMIT);
nbytes = min_t(int, remaining_bytes, DIAG_TRANSFER_LIMIT);
.src_sz_max = DIAG_TRANSFER_LIMIT,
alloc_nbytes = min_t(unsigned int, nbytes, DIAG_TRANSFER_LIMIT);
DIAG_TRANSFER_LIMIT);