Back-patch fix to ensure pg_clog updates are not only written but sync'ed

before we consider the checkpoint to be done.

diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index a5f168cbf7f2f1f6910f4b883c7e0bc3979fb440..be67fd91030a38f8bd6b87601dcc52b3f8065df3 100644 (file)
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -3052,12 +3052,10 @@ CreateCheckPoint(bool shutdown, bool force)
 
        /*
         * Having constructed the checkpoint record, ensure all shmem disk
-        * buffers are flushed to disk.
+        * buffers and commit-log buffers are flushed to disk.
         */
-       FlushBufferPool();
-
-       /* And commit-log buffers, too */
        CheckPointCLOG();
+       FlushBufferPool();
 
        /*
         * Now insert the checkpoint record into XLOG.