MDS_BITMAPBYTES
mdsp->mds_bitmap = kmem_zalloc(MDS_BITMAPBYTES(mdsp), KM_SLEEP);
mdsp->mds_bitmap_retired = kmem_zalloc(MDS_BITMAPBYTES(mdsp),
kmem_free(mdsp->mds_bitmap_retired, MDS_BITMAPBYTES(mdsp));
kmem_free(mdsp->mds_bitmap, MDS_BITMAPBYTES(mdsp));