CMP_BUFFER_SIZE
static char task_vma_output[CMP_BUFFER_SIZE];
static char proc_maps_output[CMP_BUFFER_SIZE];
while (len < CMP_BUFFER_SIZE) {
MIN(read_size, CMP_BUFFER_SIZE - len));
err = read_fd_into_buffer(proc_maps_fd, proc_maps_output, CMP_BUFFER_SIZE);
err = read_fd_into_buffer(iter_fd, task_vma_output, CMP_BUFFER_SIZE);