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Add new function log_newpage_buffer.

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When I implemented the ginbuildempty() function as part of
implementing unlogged tables, I falsified the note in the header
comment for log_newpage.  Although we could fix that up by changing
the comment, it seems cleaner to add a new function which is
specifically intended to handle this case.  So do that.
This commit is contained in:
Robert Haas
2012-06-14 10:11:16 -04:00
parent a475c60367
commit 6cd015bea3
3 changed files with 54 additions and 13 deletions
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12
src/backend/access/gin/gininsert.c
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@ -520,20 +520,14 @@ ginbuildempty(PG_FUNCTION_ARGS)
ReadBufferExtended(index, INIT_FORKNUM, P_NEW, RBM_NORMAL, NULL);
LockBuffer(RootBuffer, BUFFER_LOCK_EXCLUSIVE);
/* Initialize both pages, mark them dirty, unlock and release buffer. */
/* Initialize and xlog metabuffer and root buffer. */
START_CRIT_SECTION();
GinInitMetabuffer(MetaBuffer);
MarkBufferDirty(MetaBuffer);
log_newpage_buffer(MetaBuffer);
GinInitBuffer(RootBuffer, GIN_LEAF);
MarkBufferDirty(RootBuffer);
/* XLOG the new pages */
log_newpage(&index->rd_smgr->smgr_rnode.node, INIT_FORKNUM,
BufferGetBlockNumber(MetaBuffer),
BufferGetPage(MetaBuffer));
log_newpage(&index->rd_smgr->smgr_rnode.node, INIT_FORKNUM,
BufferGetBlockNumber(RootBuffer),
BufferGetPage(RootBuffer));
log_newpage_buffer(RootBuffer);
END_CRIT_SECTION();
/* Unlock and release the buffers. */