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Fix xl_heap_lock WAL record field's data type.

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Make xl_heap_lock's infobits_set field of type uint8, not int8.  Using
int8 isn't appropriate given that the field just holds status bits.
This fixes an oversight in commit 0ac5ad5134.

In passing rename the nearby TransactionId field to "xmax" to make
things consistency with related records, such as xl_heap_lock_updated.

Deliberately avoid a bump in XLOG_PAGE_MAGIC.  No backpatch, either.

Author: Peter Geoghegan <pg@bowt.ie>
Discussion: https://postgr.es/m/CAH2-WzkCd3kOS8b7Rfxw7Mh1_6jvX=Nzo-CWR1VBTiOtVZkWHA@mail.gmail.com
This commit is contained in:
Peter Geoghegan 2023-04-11 14:07:54 -07:00
parent 57411c82ce
commit e944063294
3 changed files with 8 additions and 8 deletions
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6
src/backend/access/heap/heapam.c
View File

@ -3567,7 +3567,7 @@ l2:
XLogRegisterBuffer(0, buffer, REGBUF_STANDARD);
xlrec.offnum = ItemPointerGetOffsetNumber(&oldtup.t_self);
xlrec.locking_xid = xmax_lock_old_tuple;
xlrec.xmax = xmax_lock_old_tuple;
xlrec.infobits_set = compute_infobits(oldtup.t_data->t_infomask,
oldtup.t_data->t_infomask2);
xlrec.flags =
@ -4777,7 +4777,7 @@ failed:
XLogRegisterBuffer(0, *buffer, REGBUF_STANDARD);
xlrec.offnum = ItemPointerGetOffsetNumber(&tuple->t_self);
xlrec.locking_xid = xid;
xlrec.xmax = xid;
xlrec.infobits_set = compute_infobits(new_infomask,
tuple->t_data->t_infomask2);
xlrec.flags = cleared_all_frozen ? XLH_LOCK_ALL_FROZEN_CLEARED : 0;
@ -9848,7 +9848,7 @@ heap_xlog_lock(XLogReaderState *record)
BufferGetBlockNumber(buffer),
offnum);
}
HeapTupleHeaderSetXmax(htup, xlrec->locking_xid);
HeapTupleHeaderSetXmax(htup, xlrec->xmax);
HeapTupleHeaderSetCmax(htup, FirstCommandId, false);
PageSetLSN(page, lsn);
MarkBufferDirty(buffer);

4
src/backend/access/rmgrdesc/heapdesc.c
View File

@ -139,8 +139,8 @@ heap_desc(StringInfo buf, XLogReaderState *record)
{
xl_heap_lock *xlrec = (xl_heap_lock *) rec;
appendStringInfo(buf, "off: %u, xid: %u, flags: 0x%02X",
xlrec->offnum, xlrec->locking_xid, xlrec->flags);
appendStringInfo(buf, "off: %u, xmax: %u, flags: 0x%02X",
xlrec->offnum, xlrec->xmax, xlrec->flags);
out_infobits(buf, xlrec->infobits_set);
}
else if (info == XLOG_HEAP_INPLACE)

6
src/include/access/heapam_xlog.h
View File

@ -279,13 +279,13 @@ typedef struct xl_heap_vacuum
/* This is what we need to know about lock */
typedef struct xl_heap_lock
{
TransactionId locking_xid; /* might be a MultiXactId not xid */
TransactionId xmax; /* might be a MultiXactId */
OffsetNumber offnum; /* locked tuple's offset on page */
int8 infobits_set; /* infomask and infomask2 bits to set */
uint8 infobits_set; /* infomask and infomask2 bits to set */
uint8 flags; /* XLH_LOCK_* flag bits */
} xl_heap_lock;
#define SizeOfHeapLock (offsetof(xl_heap_lock, flags) + sizeof(int8))
#define SizeOfHeapLock (offsetof(xl_heap_lock, flags) + sizeof(uint8))
/* This is what we need to know about locking an updated version of a row */
typedef struct xl_heap_lock_updated