Tejun Heo wrote:
>   One trick we can do is to reserve the initial chunk in non-vmalloc
>   area so that at least the static cpu ones and whatever gets
>   allocated in the first chunk is served by regular large page
>   mappings.  Given that those are most frequent visited ones, this
>   could be a nice compromise - no noticeable penalty for usual cases
>   yet allowing scalability for unusual cases.  If this is something
>   which can be agreed on, I'll pursue this.

I've given more thought to this and it actually will solve most of
issues for non-NUMA but it can't be done for NUMA.  Any better ideas?

Thanks.

-- 
tejun