From c5e9b487504aeb4451267f9e7f990db7bc0a275e Mon Sep 17 00:00:00 2001
From: "Anton A. Melnikov" <a.melnikov@postgrespro.ru>
Date: Fri, 7 Feb 2025 02:57:34 +0300
Subject: [PATCH] Mark buffer dirty for FSM pages that were newly inited. E.g.
 after zeroing damaged pages.

---
 src/backend/storage/freespace/freespace.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/backend/storage/freespace/freespace.c b/src/backend/storage/freespace/freespace.c
index 4773a9cc65e6..a6479977c6d5 100644
--- a/src/backend/storage/freespace/freespace.c
+++ b/src/backend/storage/freespace/freespace.c
@@ -614,7 +614,10 @@ fsm_readbuf(Relation rel, FSMAddress addr, bool extend)
 	{
 		LockBuffer(buf, BUFFER_LOCK_EXCLUSIVE);
 		if (PageIsNew(BufferGetPage(buf)))
+		{
 			PageInit(BufferGetPage(buf), BLCKSZ, 0);
+			MarkBufferDirty(buf);
+		}
 		LockBuffer(buf, BUFFER_LOCK_UNLOCK);
 	}
 	return buf;