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Don't include unused space in LOG_NEWPAGE records.

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This is the same trick we use when taking a full page image of a buffer
passed to XLogInsert.
This commit is contained in:
Heikki Linnakangas
2013-12-04 00:10:47 +02:00
parent 22122c83f1
commit 9e857436ef
11 changed files with 109 additions and 62 deletions
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10
src/include/access/heapam_xlog.h
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@ -198,10 +198,12 @@ typedef struct xl_heap_newpage
RelFileNode node;
ForkNumber forknum;
BlockNumber blkno; /* location of new page */
/* entire page contents follow at end of record */
uint16 hole_offset; /* number of bytes before "hole" */
uint16 hole_length; /* number of bytes in "hole" */
/* entire page contents (minus the hole) follow at end of record */
} xl_heap_newpage;
#define SizeOfHeapNewpage (offsetof(xl_heap_newpage, blkno) + sizeof(BlockNumber))
#define SizeOfHeapNewpage (offsetof(xl_heap_newpage, hole_length) + sizeof(uint16))
/* flags for infobits_set */
#define XLHL_XMAX_IS_MULTI 0x01
@ -282,7 +284,7 @@ extern XLogRecPtr log_heap_freeze(Relation reln, Buffer buffer,
extern XLogRecPtr log_heap_visible(RelFileNode rnode, Buffer heap_buffer,
Buffer vm_buffer, TransactionId cutoff_xid);
extern XLogRecPtr log_newpage(RelFileNode *rnode, ForkNumber forkNum,
BlockNumber blk, Page page);
extern XLogRecPtr log_newpage_buffer(Buffer buffer);
BlockNumber blk, Page page, bool page_std);
extern XLogRecPtr log_newpage_buffer(Buffer buffer, bool page_std);
#endif /* HEAPAM_XLOG_H */