diff options
Diffstat (limited to 'src/backend/access/brin/brin_revmap.c')
| -rw-r--r-- | src/backend/access/brin/brin_revmap.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/backend/access/brin/brin_revmap.c b/src/backend/access/brin/brin_revmap.c index 22f2076887e..5a88574bf6e 100644 --- a/src/backend/access/brin/brin_revmap.c +++ b/src/backend/access/brin/brin_revmap.c @@ -615,7 +615,7 @@ revmap_physical_extend(BrinRevmap *revmap) /* * Ok, we have now locked the metapage and the target block. Re-initialize - * it as a revmap page. + * the target block as a revmap page, and update the metapage. */ START_CRIT_SECTION(); @@ -624,6 +624,17 @@ revmap_physical_extend(BrinRevmap *revmap) MarkBufferDirty(buf); metadata->lastRevmapPage = mapBlk; + + /* + * 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. (We must do this here because pre-v11 versions of PG did not + * set the metapage's pd_lower correctly, so a pg_upgraded index might + * contain the wrong value.) + */ + ((PageHeader) metapage)->pd_lower = + ((char *) metadata + sizeof(BrinMetaPageData)) - (char *) metapage; + MarkBufferDirty(revmap->rm_metaBuf); if (RelationNeedsWAL(revmap->rm_irel)) @@ -635,7 +646,7 @@ revmap_physical_extend(BrinRevmap *revmap) XLogBeginInsert(); XLogRegisterData((char *) &xlrec, SizeOfBrinRevmapExtend); - XLogRegisterBuffer(0, revmap->rm_metaBuf, 0); + XLogRegisterBuffer(0, revmap->rm_metaBuf, REGBUF_STANDARD); XLogRegisterBuffer(1, buf, REGBUF_WILL_INIT); |