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| author | Peter Geoghegan <pg@bowt.ie> | 2020-01-02 18:30:25 -0800 |
|---|---|---|
| committer | Peter Geoghegan <pg@bowt.ie> | 2020-01-02 18:30:25 -0800 |
| commit | 0c41c83d8ff44ed8f9753885e2c11b3277babcce (patch) | |
| tree | 4e97a5c29d4856c4997f0705120bebe836cc7864 | |
| parent | 90d7f6604b6ed2dcedee2884c3b01541600515cb (diff) | |
| download | postgresql-0c41c83d8ff44ed8f9753885e2c11b3277babcce.tar.gz postgresql-0c41c83d8ff44ed8f9753885e2c11b3277babcce.zip | |
Clear up btree_xlog_split() alignment comment.
Adjust a comment that describes how alignment of the new left page high
key works in btree_xlog_split(), the nbtree page split REDO routine.
The wording used before commit 2c03216d831 is much clearer, so go back
to that.
| -rw-r--r-- | src/backend/access/nbtree/nbtxlog.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/backend/access/nbtree/nbtxlog.c b/src/backend/access/nbtree/nbtxlog.c index 5eca4ab2727..e1c37491485 100644 --- a/src/backend/access/nbtree/nbtxlog.c +++ b/src/backend/access/nbtree/nbtxlog.c @@ -281,7 +281,11 @@ btree_xlog_split(bool onleft, XLogReaderState *record) datalen -= newitemsz; } - /* Extract left hikey and its size (assuming 16-bit alignment) */ + /* + * Extract left hikey and its size. We assume that 16-bit alignment + * is enough to apply IndexTupleSize (since it's fetching from a + * uint16 field). + */ left_hikey = (IndexTuple) datapos; left_hikeysz = MAXALIGN(IndexTupleSize(left_hikey)); datapos += left_hikeysz; |