Clean open flags in raw mode

default.c

@@ -84,6 +84,7 @@ int fastwriter_default_open(fastwriter_t *fw, const char *name, fastwriter_flags
 #ifdef SYNC_MODE
 	ctx->sync_mode = 0;
 #endif /* SYNC_MODE */
+	open_flags &= ~(O_CREAT|O_NOATIME|O_LARGEFILE);
     } else if (!strcmp(fs, "ext4")) {
 	ctx->wr_block = EXT4_WRITEBLOCK;
 	ctx->pa_block = EXT4_PREALLOCATE;