abd_get_offset_size
abd_t *abd_get_offset_size(abd_t *, size_t, size_t);
abd_get_offset_size((abd_t *)good_data,
rm->rm_col[x].rc_abd = abd_get_offset_size(
good = abd_get_offset_size(rm->rm_col[c].rc_gdata, 0,
good = abd_get_offset_size((abd_t *)good_data, offset,
abd_t *tmp = abd_get_offset_size(rm->rm_abd_copy, offset,
rm->rm_col[c].rc_abd = abd_get_offset_size(zio->io_abd, 0,
rm->rm_col[c].rc_abd = abd_get_offset_size(zio->io_abd, off,