is_racy_timestamp  352 read-cache.c   	if (!changed && is_racy_timestamp(istate, ce)) {
is_racy_timestamp 1952 read-cache.c   		if (is_racy_timestamp(istate, ce))
is_racy_timestamp 2017 read-cache.c   		if (!ce_uptodate(ce) && is_racy_timestamp(istate, ce))