mirrors/postgres
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Get heap page max offset with buffer lock held.

Browse Source 
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
This commit is contained in:
Peter Geoghegan 2020-12-30 17:21:42 -08:00
parent 4228817449
commit 32d6287d2e
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/backend/access/heap/heapam.c
View File

@ -7075,10 +7075,10 @@ heap_compute_xid_horizon_for_tuples(Relation rel,
xid_horizon_prefetch_buffer(rel, &prefetch_state, 1); xid_horizon_prefetch_buffer(rel, &prefetch_state, 1);
#endif #endif
LockBuffer(buf, BUFFER_LOCK_SHARE);
page = BufferGetPage(buf); page = BufferGetPage(buf);
maxoff = PageGetMaxOffsetNumber(page); maxoff = PageGetMaxOffsetNumber(page);
LockBuffer(buf, BUFFER_LOCK_SHARE);
} }
/* /*