diff options
Diffstat (limited to 'src/backend/storage/lmgr/predicate.c')
| -rw-r--r-- | src/backend/storage/lmgr/predicate.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/backend/storage/lmgr/predicate.c b/src/backend/storage/lmgr/predicate.c index aa657fab579..700c0db9278 100644 --- a/src/backend/storage/lmgr/predicate.c +++ b/src/backend/storage/lmgr/predicate.c @@ -3366,9 +3366,10 @@ XidIsConcurrent(TransactionId xid) * If the transactions overlap (i.e., they cannot see each other's writes), * then we have a conflict out. * - * This function should be called just about anywhere in heapam.c that a - * tuple has been read. There is currently no known reason to call this - * function from an index AM. + * This function should be called just about anywhere in heapam.c where a + * tuple has been read. The caller must hold at least a shared lock on the + * buffer, because this function might set hint bits on the tuple. There is + * currently no known reason to call this function from an index AM. */ void CheckForSerializableConflictOut(const bool visible, const Relation relation, |