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    SubjectRe: [RFC mm][PATCH 4/5] add a lowmem check function
    On Thu, 10 Dec 2009 11:59:11 -0600 (CST)
    Christoph Lameter <> wrote:

    > On Thu, 10 Dec 2009, KAMEZAWA Hiroyuki wrote:
    > > This patch adds an integer lowmem_zone, which is initialized to -1.
    > > If zone_idx(zone) <= lowmem_zone, the zone is lowmem.
    > There is already a policy_zone in mempolicy.h. lowmem is if the zone
    > number is lower than policy_zone. Can we avoid adding another zone
    > limiter?
    My previous version (one month ago) does that. In this set, I tried to use
    unified approach for all CONFIG_NUMA/HIGHMEM/flat ones.

    Hmm, How about adding following kind of patch after this

    #define policy_zone (lowmem_zone + 1)

    and remove policy_zone ? I think the name of "policy_zone" implies
    "this is for mempolicy, NUMA" and don't think good name for generic use.


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