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Make lazy_vacuum_heap_rel match lazy_scan_heap.

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Make lazy_vacuum_heap_rel variable names match those from lazy_scan_heap
where that makes sense.

Extracted from a larger patch to deal with issues with how vacuumlazy.c
sets pages all-frozen.

Author: Peter Geoghegan <pg@bowt.ie>
Discussion: https://postgr.es/m/CAH2-WznuNGSzF8v6OsgjaC5aYsb3cZ6HW6MLm30X0d65cmSH6A@mail.gmail.com
This commit is contained in:
Peter Geoghegan 2023-01-11 18:45:32 -08:00
parent 8c233cf86b
commit d30b499997
1 changed files with 8 additions and 16 deletions
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24
src/backend/access/heap/vacuumlazy.c
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@ -2388,8 +2388,8 @@ lazy_vacuum_all_indexes(LVRelState *vacrel)
static void
lazy_vacuum_heap_rel(LVRelState *vacrel)
{
int index;
BlockNumber vacuumed_pages;
int index = 0;
BlockNumber vacuumed_pages = 0;
Buffer vmbuffer = InvalidBuffer;
LVSavedErrInfo saved_err_info;
@ -2406,42 +2406,34 @@ lazy_vacuum_heap_rel(LVRelState *vacrel)
VACUUM_ERRCB_PHASE_VACUUM_HEAP,
InvalidBlockNumber, InvalidOffsetNumber);
vacuumed_pages = 0;
index = 0;
while (index < vacrel->dead_items->num_items)
{
BlockNumber tblk;
BlockNumber blkno;
Buffer buf;
Page page;
Size freespace;
vacuum_delay_point();
tblk = ItemPointerGetBlockNumber(&vacrel->dead_items->items[index]);
vacrel->blkno = tblk;
buf = ReadBufferExtended(vacrel->rel, MAIN_FORKNUM, tblk, RBM_NORMAL,
blkno = ItemPointerGetBlockNumber(&vacrel->dead_items->items[index]);
vacrel->blkno = blkno;
buf = ReadBufferExtended(vacrel->rel, MAIN_FORKNUM, blkno, RBM_NORMAL,
vacrel->bstrategy);
LockBuffer(buf, BUFFER_LOCK_EXCLUSIVE);
index = lazy_vacuum_heap_page(vacrel, tblk, buf, index, &vmbuffer);
index = lazy_vacuum_heap_page(vacrel, blkno, buf, index, &vmbuffer);
/* Now that we've vacuumed the page, record its available space */
page = BufferGetPage(buf);
freespace = PageGetHeapFreeSpace(page);
UnlockReleaseBuffer(buf);
RecordPageWithFreeSpace(vacrel->rel, tblk, freespace);
RecordPageWithFreeSpace(vacrel->rel, blkno, freespace);
vacuumed_pages++;
}
/* Clear the block number information */
vacrel->blkno = InvalidBlockNumber;
if (BufferIsValid(vmbuffer))
{
ReleaseBuffer(vmbuffer);
vmbuffer = InvalidBuffer;
}
/*
* We set all LP_DEAD items from the first heap pass to LP_UNUSED during