MR_LD_CACHE_READ_AHEAD
#define MR_LD_CACHE_POLICY_READ_AHEAD_ALWAYS MR_LD_CACHE_READ_AHEAD
(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_AHEAD ?
policy = MR_LD_CACHE_READ_AHEAD;
policy = MR_LD_CACHE_READ_AHEAD |
stage_cache_setting(props, policy, MR_LD_CACHE_READ_AHEAD |
props.default_cache_policy & MR_LD_CACHE_READ_AHEAD ?