git.postgresql.org Git - postgresql.git/commitdiff

diff --git a/src/backend/access/nbtree/nbtsearch.c b/src/backend/access/nbtree/nbtsearch.c

index 472ce06f1908ee0c8dec4e38470ba971d27d4943..6b2f464aa04816d822cdd32fa9e5b1d420d03ab1 100644 (file)

--- a/src/backend/access/nbtree/nbtsearch.c

+++ b/src/backend/access/nbtree/nbtsearch.c

* scan. A seized=false caller's blkno can never be assumed to be the page

* that must be read next during a parallel scan, though. We must figure that

* part out for ourselves by seizing the scan (the correct page to read might

- * already be beyond the seized=false caller's blkno during a parallel scan).

+ * already be beyond the seized=false caller's blkno during a parallel scan,

+ * unless blkno/so->currPos.nextPage/so->currPos.prevPage is already P_NONE,

+ * or unless so->currPos.moreRight/so->currPos.moreLeft is already unset).

*

* On success exit, so->currPos is updated to contain data from the next

* interesting page, and we return true. We hold a pin on the buffer on

BTScanOpaque so = (BTScanOpaque) scan->opaque;

Assert(so->currPos.currPage == lastcurrblkno || seized);

+ Assert(!(blkno == P_NONE && seized));

Assert(!BTScanPosIsPinned(so->currPos));

/*