diff --git a/src/gausskernel/process/postmaster/pagewriter.cpp b/src/gausskernel/process/postmaster/pagewriter.cpp
index 5c2cd512d..4d5b125bd 100755
--- a/src/gausskernel/process/postmaster/pagewriter.cpp
+++ b/src/gausskernel/process/postmaster/pagewriter.cpp
@@ -1217,8 +1217,8 @@ static void HandlePageWriterMainInterrupts()
     }
 
     if (t_thrd.pagewriter_cxt.sync_requested) {
-        t_thrd.pagewriter_cxt.sync_requested = false;
         PageWriterSyncWithAbsorption();
+        t_thrd.pagewriter_cxt.sync_requested = false;
     }
 
     /* main thread should finally exit. */