
The comment implies that a single retry is sufficient to avoid spurious checksum failures, but in fact no number of retries is sufficient for that purpose. Update the comment accordingly. Patch by me, reviewed by Michael Paquier. Discussion: http://postgr.es/m/CA+TgmoZ_fFAoU6mrHt9QBs+dcYhN6yXenGTTMRebZNhtwPwHyg@mail.gmail.com