glusterfsd/src/glusterfsd.c:215
        {"use-readdirp", ARGP_FUSE_USE_READDIRP_KEY, "BOOL", OPTION_ARG_OPTIONAL,
         "Use readdirp mode in fuse kernel module"
         " [default: \"off\"]"},


glusterfsd/src/glusterfsd.c:1077
        case ARGP_FUSE_USE_READDIRP_KEY:
                if (!arg)
                        arg = "yes";


The default should be yes anyway, so just need to fix the text in line 217

Even better would be to have these kind of options and their help text come from each translator's volume_options struct so changes don't come from multiple places. Perhaps that struct should be in include files?