Modify XLogInsert API to make callers specify whether pages to be backed
Tom Lane <tgl@sss.pgh.pa.us>
Modify XLogInsert API to make callers specify whether pages to be backed up have the standard layout with unused space between pd_lower and pd_upper. When this is set, XLogInsert will omit the unused space without bothering to scan it to see if it's zero. That saves time in XLogInsert, and also allows reversion of my earlier patch to make PageRepairFragmentation et al explicitly re-zero freed space. Per suggestion by Heikki Linnakangas.
Files
| Path | Change | +/− |
|---|---|---|
| src/backend/access/heap/heapam.c | modified | +22 −14 |
| src/backend/access/nbtree/nbtinsert.c | modified | +11 −9 |
| src/backend/access/nbtree/nbtpage.c | modified | +14 −10 |
| src/backend/access/nbtree/nbtsort.c | modified | +3 −3 |
| src/backend/access/transam/clog.c | modified | +2 −2 |
| src/backend/access/transam/xact.c | modified | +10 −10 |
| src/backend/access/transam/xlog.c | modified | +67 −51 |
| src/backend/commands/dbcommands.c | modified | +3 −3 |
| src/backend/commands/sequence.c | modified | +9 −9 |
| src/backend/commands/tablecmds.c | modified | +3 −3 |
| src/backend/commands/tablespace.c | modified | +4 −4 |
| src/backend/storage/page/bufpage.c | modified | +5 −24 |
| src/backend/storage/smgr/smgr.c | modified | +3 −3 |
| src/include/access/xlog.h | modified | +29 −11 |