| From: | "Pavan Deolasee" <pavan(dot)deolasee(at)gmail(dot)com> |
|---|---|
| To: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: visibility maps |
| Date: | 2008-12-05 07:25:17 |
| Message-ID: | 2e78013d0812042325y72ac4f0eg27718a0b673c8ef4@mail.gmail.com |
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| Lists: | pgsql-hackers |
/*
* Size of the bitmap on each visibility map page, in bytes. There's no
* extra headers, so the whole page minus except for the standard page
header
* is used for the bitmap.
*/
#define MAPSIZE (BLCKSZ - SizeOfPageHeaderData)
ISTM that we should MAXALIGN the SizeOfPageHeaderData to compute MAPSIZE.
PageGetContents() works that way and I believe that's the right thing to do.
Thanks,
Pavan
--
Pavan Deolasee
EnterpriseDB http://www.enterprisedb.com
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