diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c
index 386c585320e..f684e339007 100644
--- a/src/backend/storage/buffer/bufmgr.c
+++ b/src/backend/storage/buffer/bufmgr.c
@@ -483,7 +483,8 @@ ReadBuffer_common(SMgrRelation smgr, bool isLocalBuf, ForkNumber forkNum,
 	 * (Note that we cannot use LockBuffer() of LockBufferForCleanup() here,
 	 * because they assert that the buffer is already valid.)
 	 */
-	if (mode == RBM_ZERO_AND_LOCK || mode == RBM_ZERO_AND_CLEANUP_LOCK)
+	if ((mode == RBM_ZERO_AND_LOCK || mode == RBM_ZERO_AND_CLEANUP_LOCK) &&
+		!isLocalBuf)
 		LWLockAcquire(bufHdr->content_lock, LW_EXCLUSIVE);
 
 	if (isLocalBuf)