diff --git a/src/common/backend/utils/misc/guc/guc_storage.cpp b/src/common/backend/utils/misc/guc/guc_storage.cpp
index e5bc80c3e..2f3957d44 100755
--- a/src/common/backend/utils/misc/guc/guc_storage.cpp
+++ b/src/common/backend/utils/misc/guc/guc_storage.cpp
@@ -1020,7 +1020,7 @@ static void InitStorageConfigureNamesBool()
             NULL},
 
         {{"ss_enable_aio",
-            PGC_SIGHUP,
+            PGC_POSTMASTER,
             NODE_SINGLENODE,
             SHARED_STORAGE_OPTIONS,
             gettext_noop("Whether use dss aio"),
@@ -1029,7 +1029,7 @@ static void InitStorageConfigureNamesBool()
             &g_instance.attr.attr_storage.dms_attr.enable_dss_aio,
             true,
             NULL,
-            assign_ss_enable_aio,
+            NULL,
             NULL},
 
 #ifdef USE_ASSERT_CHECKING
@@ -5878,11 +5878,6 @@ static bool check_ss_enable_ssl(bool *newval, void **extra, GucSource source)
     return true;
 }
 
-static void assign_ss_enable_aio(bool newval, void *extra)
-{
-    g_instance.attr.attr_storage.dms_attr.enable_dss_aio = newval;
-}
-
 #ifdef USE_ASSERT_CHECKING
 static void assign_ss_enable_verify_page(bool newval, void *extra)
 {
diff --git a/src/gausskernel/storage/buffer/bufmgr.cpp b/src/gausskernel/storage/buffer/bufmgr.cpp
index d41c78bc8..a607390d1 100644
--- a/src/gausskernel/storage/buffer/bufmgr.cpp
+++ b/src/gausskernel/storage/buffer/bufmgr.cpp
@@ -4785,7 +4785,7 @@ void FlushBuffer(void *buf, SMgrRelation reln, ReadBufferMethod flushmethod, boo
         SegFlushCheckDiskLSN(spc, fakenode, bufferinfo.blockinfo.forknum, bufdesc->extra->seg_blockno, bufToWrite);
 #endif
 
-        if (ENABLE_DMS && t_thrd.role == PAGEWRITER_THREAD && ENABLE_DSS_AIO) {
+        if (ENABLE_DMS && (t_thrd.role == PAGEWRITER_THREAD) && ENABLE_DSS_AIO) {
             int thread_id = t_thrd.pagewriter_cxt.pagewriter_id;
             PageWriterProc *pgwr = &g_instance.ckpt_cxt_ctl->pgwr_procs.writer_proc[thread_id];
             DSSAioCxt *aio_cxt = &pgwr->aio_cxt;