MR_LD_CACHE_READ_ADAPTIVE
(MR_LD_CACHE_READ_AHEAD | MR_LD_CACHE_READ_ADAPTIVE)
if (changes & (MR_LD_CACHE_READ_AHEAD | MR_LD_CACHE_READ_ADAPTIVE))
(policy & MR_LD_CACHE_READ_ADAPTIVE ?
MR_LD_CACHE_READ_ADAPTIVE;
MR_LD_CACHE_READ_ADAPTIVE);
(props.default_cache_policy & MR_LD_CACHE_READ_ADAPTIVE ?