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
SUSE Labs
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/