Re: [PATCH v5 2/6] mm/cma: introduce new zone, ZONE_CMA
From: Aneesh Kumar K.V
Date: Tue Aug 30 2016 - 08:41:11 EST
"Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx> writes:
>> static inline void check_highest_zone(enum zone_type k)
>> - if (k > policy_zone && k != ZONE_MOVABLE)
>> + if (k > policy_zone && k != ZONE_MOVABLE && !is_zone_cma_idx(k))
>> policy_zone = k;
> Should we apply policy to allocation from ZONE CMA ?. CMA reserve
> happens early and may mostly come from one node. Do we want the
> CMA allocation to fail if we use mbind(MPOL_BIND) with a node mask not
> including that node on which CMA is reserved, considering CMA memory is
> going to be used for special purpose.
Looking at this again, I guess CMA alloc is not going to depend on
memory policy, but this is for other movable allocation ?