On Wed 06-01-16 16:42:55, Michal Hocko wrote:
> Anonymous mappings
> are not visible by any other process so doing a munlock before unmap
> is safe to do from the semantic point of view.
I was too conservative here. I have completely forgoten about the lazy
mlock handling during try_to_unmap which
From: Michal Hocko
__oom_reap_vmas current skips over all mlocked vmas because they need
a special treatment before they are unmapped. This is primarily done
for simplicity. There is no reason to skip over them for all mappings
though and reduce the amount of reclaimed memory. Anonymous mappings
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