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Change xl_hash_vacuum_one_page.ntuples from int to uint16.
author Amit Kapila <akapila@postgresql.org>
2023年2月27日 03:02:45 +0000 (08:32 +0530)
committer Amit Kapila <akapila@postgresql.org>
2023年2月27日 03:02:45 +0000 (08:32 +0530)
This will create two bytes of padding space in xl_hash_vacuum_one_page which
can be used for future patches. This makes the datatype of
xl_hash_vacuum_one_page.ntuples same as gistxlogDelete.ntodelete which is
advisable as both are used for the same purpose.

Author: Bertrand Drouvot
Reviewed-by: Nathan Bossart
Discussion: https://postgr.es/m/b0e20c40-cb7a-fc1c-c607-2a78dac5021e@gmail.com

src/include/access/hash_xlog.h patch | blob | blame | history
src/include/access/xlog_internal.h patch | blob | blame | history

diff --git a/src/include/access/hash_xlog.h b/src/include/access/hash_xlog.h
index a2f0f392133f54f4af7e0158372c2dd73b1c0845..9894ab9afee20161198f18b97c5e4397ec61078d 100644 (file)
--- a/src/include/access/hash_xlog.h
+++ b/src/include/access/hash_xlog.h
@@ -251,13 +251,13 @@ typedef struct xl_hash_init_bitmap_page
typedef struct xl_hash_vacuum_one_page
{
TransactionId snapshotConflictHorizon;
- int ntuples;
+ uint16 ntuples;
/* TARGET OFFSET NUMBERS FOLLOW AT THE END */
} xl_hash_vacuum_one_page;
#define SizeOfHashVacuumOnePage \
- (offsetof(xl_hash_vacuum_one_page, ntuples) + sizeof(int))
+ (offsetof(xl_hash_vacuum_one_page, ntuples) + sizeof(uint16))
extern void hash_redo(XLogReaderState *record);
extern void hash_desc(StringInfo buf, XLogReaderState *record);
diff --git a/src/include/access/xlog_internal.h b/src/include/access/xlog_internal.h
index 59fc7bc105dbb22439e28c41a25a50fb89578af7..8edae7bb079e1138359df61f0267082cd5ebc5b6 100644 (file)
--- a/src/include/access/xlog_internal.h
+++ b/src/include/access/xlog_internal.h
@@ -31,7 +31,7 @@
/*
* Each page of XLOG file has a header like this:
*/
-#define XLOG_PAGE_MAGIC 0xD111 /* can be used as WAL version indicator */
+#define XLOG_PAGE_MAGIC 0xD112 /* can be used as WAL version indicator */
typedef struct XLogPageHeaderData
{
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