2011/6/24 Michal Hocko [off-list ref]:

Sorry, forgot to send my
Reviewed-by: Michal Hocko <redacted>

Thanks.

I still have concerns about this way to handle the issue. See the follow
up discussion in other thread (https://lkml.org/lkml/2011/6/23/135).

Anyway I think that we do not have many other options to handle this.
Either we unlock, charge, lock&restes or we preallocate, fault in

I agree.

Or am I missing some other ways how to do it? What do others think about
these approaches?

Yes, I'd like to hear other mm specialists' suggestion. and I'll think
other way, again.
Anyway, memory reclaim with holding a lock_page() can cause big latency
or starvation especially when memcg is used. It's better to avoid it.

Thanks,
-Kame

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