Re: [PATCH 2/2] Drivers: hv: balloon: Support 2M page allocationsfor ballooning

From: Michal Hocko
Date: Mon Mar 18 2013 - 06:53:13 EST

On Sat 16-03-13 14:42:05, K. Y. Srinivasan wrote:
> While ballooning memory out of the guest, attempt 2M allocations first.
> If 2M allocations fail, then go for 4K allocations. In cases where we
> have performed 2M allocations, split this 2M page so that we can free this
> page at 4K granularity (when the host returns the memory).

Maybe I am missing something but what is the advantage of 2M allocation
when you split it up immediately so you are not using it as a huge page?

Michal Hocko
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