UMI_MAX_BUCKET
if (ump->um_bucket != NULL && mallocsz <= UMI_MAX_BUCKET)
size_t maxalloc = UMI_MAX_BUCKET;
mi.um_bucket = mdb_zalloc((UMI_MAX_BUCKET + 1) * sizeof (*mi.um_bucket),
mdb_zalloc((UMI_MAX_BUCKET + 1) * sizeof (*mi.um_bucket),