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    SubjectRe: [BUGFIX][PATCH] oom-kill: fix NUMA consraint check with nodemask v3
    On Wed, 11 Nov 2009, KOSAKI Motohiro wrote:

    > Linux doesn't support 1K nodes. (and only SGI huge machine use 512 nodes)
    >

    I know for a fact that it does on x86 if you adjust CONFIG_NODES_SHIFT,
    I've booted kernels all the way back to 2.6.18 with 1K nodes.

    > At least, NODEMASK_ALLOC should make more cleaner interface. current one
    > and struct nodemask_scratch are pretty ugly.
    >

    I agree, I haven't been a fan of nodemask_scratch because I think its use
    case is pretty limited, but I do advocate using NODEMASK_ALLOC() when deep
    in the stack. We've made sure that most of the mempolicy code does that
    where manipulating nodemasks is common in -mm.


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