uatomic_add(&buf->commit_count[oldidx].cc, padding_size);
commit_count = uatomic_read(&buf->commit_count[oldidx].cc);
ltt_check_deliver(chan, buf, offsets->old - 1, commit_count, oldidx);
uatomic_add(&buf->commit_count[oldidx].cc, padding_size);
commit_count = uatomic_read(&buf->commit_count[oldidx].cc);
ltt_check_deliver(chan, buf, offsets->old - 1, commit_count, oldidx);