From c1cb353108fcc2f24521089de26664861e52f9c5 Mon Sep 17 00:00:00 2001
From: Takayuki Tsunakawa <tsunakawa.takay@fujitsu.com>
Date: Fri, 12 Mar 2021 14:17:34 +0900
Subject: [PATCH v1] Fix overflow when counting the number of buffers to
 invalidate

---
 src/backend/storage/buffer/bufmgr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c
index 4c1d5ec..5aa7b9e 100644
--- a/src/backend/storage/buffer/bufmgr.c
+++ b/src/backend/storage/buffer/bufmgr.c
@@ -2987,7 +2987,7 @@ DropRelFileNodeBuffers(SMgrRelation smgr_reln, ForkNumber *forkNum,
 	int			j;
 	RelFileNodeBackend rnode;
 	BlockNumber nForkBlock[MAX_FORKNUM];
-	BlockNumber nBlocksToInvalidate = 0;
+	uint64 		nBlocksToInvalidate = 0;
 
 	rnode = smgr_reln->smgr_rnode;
 
@@ -3111,7 +3111,7 @@ DropRelFileNodesAllBuffers(SMgrRelation *smgr_reln, int nnodes)
 	int			n = 0;
 	SMgrRelation *rels;
 	BlockNumber (*block)[MAX_FORKNUM + 1];
-	BlockNumber nBlocksToInvalidate = 0;
+	uint64 		nBlocksToInvalidate = 0;
 	RelFileNode *nodes;
 	bool		cached = true;
 	bool		use_bsearch;
-- 
2.10.1