From: Robert Haas <rhaas@postgresql.org>
Date: Wed, 22 Sep 2021 20:43:23 +0000 (-0400)
Subject: fix buffer lock mode
X-Git-Url: http://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=2dcdfc08b8a09fdde7fc699ac30fa3a47df94b4f;p=users%2Frhaas%2Fpostgres.git

fix buffer lock mode
---

diff --git a/src/backend/access/conveyor/conveyor.c b/src/backend/access/conveyor/conveyor.c
index 7cdaf12b3e..e6e0450ab7 100644
--- a/src/backend/access/conveyor/conveyor.c
+++ b/src/backend/access/conveyor/conveyor.c
@@ -378,7 +378,7 @@ ConveyorBeltGetNewPage(ConveyorBelt *cb, CBPageNo *pageno)
 		 */
 		if (insert_state == CBM_INSERT_OK)
 		{
-			buffer = ConveyorBeltRead(cb, next_blkno, BUFFER_LOCK_SHARE);
+			buffer = ConveyorBeltRead(cb, next_blkno, BUFFER_LOCK_EXCLUSIVE);
 			if (PageIsNew(BufferGetPage(buffer)))
 			{
 				/*