Don't fsync() files when --no-sync is specified

Michael Paquier

src/bin/pg_basebackup/walmethods.c

@@ -611,6 +611,9 @@ tar_sync(Walfile f)
 	Assert(f != NULL);
 	tar_clear_error();
 
+	if (!tar_data->sync)
+		return 0;
+
 	/*
 	 * Always sync the whole tarfile, because that's all we can do. This makes
 	 * no sense on compressed files, so just ignore those.
@@ -842,6 +845,7 @@ tar_finish(void)
 #endif
 
 	/* sync the empty blocks as well, since they're after the last file */
+	if (tar_data->sync)
 		fsync(tar_data->fd);
 
 	if (close(tar_data->fd) != 0)