diff options
Diffstat (limited to 'src/backend/executor/nodeModifyTable.c')
| -rw-r--r-- | src/backend/executor/nodeModifyTable.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/backend/executor/nodeModifyTable.c b/src/backend/executor/nodeModifyTable.c index 9d10467303c..05b6e3337f8 100644 --- a/src/backend/executor/nodeModifyTable.c +++ b/src/backend/executor/nodeModifyTable.c @@ -177,6 +177,11 @@ ExecCheckHeapTupleVisible(EState *estate, if (!IsolationUsesXactSnapshot()) return; + /* + * We need buffer pin and lock to call HeapTupleSatisfiesVisibility. + * Caller should be holding pin, but not lock. + */ + LockBuffer(buffer, BUFFER_LOCK_SHARE); if (!HeapTupleSatisfiesVisibility(tuple, estate->es_snapshot, buffer)) { /* @@ -190,6 +195,7 @@ ExecCheckHeapTupleVisible(EState *estate, (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE), errmsg("could not serialize access due to concurrent update"))); } + LockBuffer(buffer, BUFFER_LOCK_UNLOCK); } /* |