From d961d39e762d8d4501d50e6de8e456b9a721a0eb Mon Sep 17 00:00:00 2001
From: Konstantin Knizhnik <knizhnik@garret.ru>
Date: Wed, 23 Jul 2025 16:01:56 +0300
Subject: [PATCH] Update pgxn/neon/relperst_cache.c

Co-authored-by: Heikki Linnakangas <heikki@neon.tech>
---
 pgxn/neon/relperst_cache.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pgxn/neon/relperst_cache.c b/pgxn/neon/relperst_cache.c
index a4d059cbfb..8b728dcba6 100644
--- a/pgxn/neon/relperst_cache.c
+++ b/pgxn/neon/relperst_cache.c
@@ -63,8 +63,10 @@ static HTAB *relperst_hash;
 static int	relperst_hash_size = DEFAULT_RELPERST_HASH_SIZE;
 static NeonRelPersistenceHashControl* relperst_ctl;
 
+/* Protects unlogged build completing while another backend is writing to it */ 
 LWLockId finish_unlogged_build_lock;
-LWLockId relperst_hash_lock;
+/* Protects 'relperst_hash' */
+static LWLockId relperst_hash_lock;
 
 /*
  * Shared memory registration