Question re: Howison et al Lustre mdc_config tuning recommendations

Good day,

I decided to try some metadata caching parameters related to the
discussion on pages 3-4 of Howison et al
The paper gives sample code as follows in Figure 5:

    H5AC_cache_config_t mdc_config;
    hid_t file_id;
    file_id = H5Fopen("file.h5", H5ACC_RDWR, H5P_DEFAULT);
    mdc_config.version = H5AC__CURR_CACHE_CONFIG_VERSION;
    H5Pget_mdc_config(file_id, &mdc_config)
    mdc_config.evictions_enabled = 0 /* FALSE */;
    mdc_config.incr_mode = H5C_incr__off;
    mdc_config.decr_mode = H5C_decr__off;
    H5Pset_mdc_config(file_id, &mdc_config);

Attempting to directly implement this fails. Modifying the above so
the H5Pget_mdc_config/H5Pset_mdc_config operates on a file access
property list succeeds. However, I saw runtime errors like

HDF5-DIAG: Error detected in HDF5 (1.8.5-patch1) MPI-process 2:
  #000: H5Pfapl.c line 1354 in H5Pset_mdc_config(): invalid metadata
cache configuration
    major: Invalid arguments to routine
    minor: Bad value
  #001: H5AC.c line 2665 in H5AC_validate_config(): Can't disable
evictions while auto-resize is enabled.
    major: Invalid arguments to routine
    minor: Bad value

which I've remedied by glancing at H5AC.c:2665 and then adding the statement

    mdc_config.flash_incr_mode = H5C_flash_incr__off;

to the code block above. Is this modification in the spirit of what
Howison et al. suggests? Or is using H5C_flash_incr__off asking for
trouble in ways that the paper does not discuss?

Thanks for your time,