From 3524ef32ebe1534e2dcccd8740046bbc17f9ae12 Mon Sep 17 00:00:00 2001
From: Minglei Jin <mljin@taosdata.com>
Date: Fri, 8 Sep 2023 09:28:08 +0800
Subject: [PATCH] tdb/pcache: not free page if already on free list

---
 source/libs/tdb/src/db/tdbPCache.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/source/libs/tdb/src/db/tdbPCache.c b/source/libs/tdb/src/db/tdbPCache.c
index f157810cdc..54baee350a 100644
--- a/source/libs/tdb/src/db/tdbPCache.c
+++ b/source/libs/tdb/src/db/tdbPCache.c
@@ -229,9 +229,15 @@ void tdbPCacheInvalidatePage(SPCache *pCache, SPager *pPager, SPgno pgno) {
   }
 
   if (pPage) {
-    tdbPCachePinPage(pCache, pPage);
+    bool moveToFreeList = false;
+    if (pPage->pLruNext) {
+      tdbPCachePinPage(pCache, pPage);
+      moveToFreeList = true;
+    }
     tdbPCacheRemovePageFromHash(pCache, pPage);
-    tdbPCacheFreePage(pCache, pPage);
+    if (moveToFreeList) {
+      tdbPCacheFreePage(pCache, pPage);
+    }
   }
 }