From e8a6becff7499b3a96a3e1ecd662e879092c03ae Mon Sep 17 00:00:00 2001
From: Andrew Kane <andrew@ankane.org>
Date: Wed, 2 Aug 2023 22:06:52 -0700
Subject: [PATCH] Added entry level to metapage [skip ci]

---
 src/hnsw.h      | 1 +
 src/hnswutils.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/src/hnsw.h b/src/hnsw.h
index cde1686..0313f1d 100644
--- a/src/hnsw.h
+++ b/src/hnsw.h
@@ -168,6 +168,7 @@ typedef struct HnswMetaPageData
 	uint32		efConstruction;
 	BlockNumber entryBlkno;
 	OffsetNumber entryOffno;
+	int16		entryLevel;
 	BlockNumber insertPage;
 }			HnswMetaPageData;
 
diff --git a/src/hnswutils.c b/src/hnswutils.c
index 20b040e..6603289 100644
--- a/src/hnswutils.c
+++ b/src/hnswutils.c
@@ -919,11 +919,13 @@ UpdateMetaPage(Relation index, bool updateEntry, HnswElement entryPoint, BlockNu
 		{
 			metap->entryBlkno = InvalidBlockNumber;
 			metap->entryOffno = InvalidOffsetNumber;
+			metap->entryLevel = -1;
 		}
 		else
 		{
 			metap->entryBlkno = entryPoint->blkno;
 			metap->entryOffno = entryPoint->offno;
+			metap->entryLevel = entryPoint->level;
 		}
 	}