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| author | Peter Geoghegan <pg@bowt.ie> | 2020-12-30 17:21:39 -0800 |
|---|---|---|
| committer | Peter Geoghegan <pg@bowt.ie> | 2020-12-30 17:21:39 -0800 |
| commit | 5f95664e191974d275381577db87858cc121e0f4 (patch) | |
| tree | 1e93652d71ee9b65d1ee32093179d37de7160ee9 /src/backend | |
| parent | 4f70e0910ec875e34b645116e7b565e5bce28c3f (diff) | |
| download | postgresql-5f95664e191974d275381577db87858cc121e0f4.tar.gz postgresql-5f95664e191974d275381577db87858cc121e0f4.zip | |
Get heap page max offset with buffer lock held.
On further reflection it seems better to call PageGetMaxOffsetNumber()
after acquiring a buffer lock on the page. This shouldn't really
matter, but doing it this way is cleaner.
Follow-up to commit 42288174.
Backpatch: 12-, just like commit 42288174
Diffstat (limited to 'src/backend')
| -rw-r--r-- | src/backend/access/heap/heapam.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/backend/access/heap/heapam.c b/src/backend/access/heap/heapam.c index 4db3f2507ff..1e2536c70e7 100644 --- a/src/backend/access/heap/heapam.c +++ b/src/backend/access/heap/heapam.c @@ -7084,10 +7084,10 @@ heap_compute_xid_horizon_for_tuples(Relation rel, xid_horizon_prefetch_buffer(rel, &prefetch_state, 1); #endif + LockBuffer(buf, BUFFER_LOCK_SHARE); + page = BufferGetPage(buf); maxoff = PageGetMaxOffsetNumber(page); - - LockBuffer(buf, BUFFER_LOCK_SHARE); } /* |