diff options
Diffstat (limited to 'src/backend/access/brin/brin_pageops.c')
| -rw-r--r-- | src/backend/access/brin/brin_pageops.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/backend/access/brin/brin_pageops.c b/src/backend/access/brin/brin_pageops.c index b0f86f3663..09db5c6f8f 100644 --- a/src/backend/access/brin/brin_pageops.c +++ b/src/backend/access/brin/brin_pageops.c @@ -476,7 +476,7 @@ brin_page_init(Page page, uint16 type) } /* - * Initialize a new BRIN index' metapage. + * Initialize a new BRIN index's metapage. */ void brin_metapage_init(Page page, BlockNumber pagesPerRange, uint16 version) @@ -497,6 +497,14 @@ brin_metapage_init(Page page, BlockNumber pagesPerRange, uint16 version) * revmap page to be created when the index is. */ metadata->lastRevmapPage = 0; + + /* + * Set pd_lower just past the end of the metadata. This is essential, + * because without doing so, metadata will be lost if xlog.c compresses + * the page. + */ + ((PageHeader) page)->pd_lower = + ((char *) metadata + sizeof(BrinMetaPageData)) - (char *) page; } /* |