CACHE_READ_ALLOCATE
this_leaf->attributes |= CACHE_READ_ALLOCATE;
CACHE_READ_ALLOCATE | CACHE_WRITE_ALLOCATE;
if ((ci_attr & CACHE_READ_ALLOCATE) && (ci_attr & CACHE_WRITE_ALLOCATE))
else if (ci_attr & CACHE_READ_ALLOCATE)
(CACHE_READ_ALLOCATE | CACHE_WRITE_ALLOCATE)