Messages in this thread | | | Date | Wed, 3 Feb 2016 15:57:51 -0800 (PST) | From | David Rientjes <> | Subject | Re: [PATCH 2/5] oom reaper: handle mlocked pages |
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On Wed, 3 Feb 2016, Michal Hocko wrote:
> From: Michal Hocko <mhocko@suse.com> > > __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 and reduce the amount > of reclaimed memory. This is safe from the semantic point of view > because try_to_unmap_one during rmap walk would keep tell the reclaim > to cull the page back and mlock it again. > > munlock_vma_pages_all is also safe to be called from the oom reaper > context because it doesn't sit on any locks but mmap_sem (for read). > > Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: David Rientjes <rientjes@google.com>
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