diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/access/heap/heapam.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/backend/access/heap/heapam.c b/src/backend/access/heap/heapam.c index 17950d482c1..b2d19016e76 100644 --- a/src/backend/access/heap/heapam.c +++ b/src/backend/access/heap/heapam.c @@ -2645,13 +2645,16 @@ l2: * visible while we were busy locking the buffer, or during some subsequent * window during which we had it unlocked, we'll have to unlock and * re-lock, to avoid holding the buffer lock across an I/O. That's a bit - * unfortunate, but hopefully shouldn't happen often. + * unfortunate, esepecially since we'll now have to recheck whether the + * tuple has been locked or updated under us, but hopefully it won't + * happen very often. */ if (vmbuffer == InvalidBuffer && PageIsAllVisible(page)) { LockBuffer(buffer, BUFFER_LOCK_UNLOCK); visibilitymap_pin(relation, block, &vmbuffer); LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE); + goto l2; } /* |