On Thu 06-04-17 13:16:24, David Rientjes wrote:
> We got need_resched() warnings in swap_cgroup_swapoff() because
> swap_cgroup_ctrl[type].length is particularly large.
> 
> Reschedule when needed.
> 
> Signed-off-by: David Rientjes <[email protected]>

Acked-by: Michal Hocko <[email protected]>

> ---
>  mm/swap_cgroup.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/mm/swap_cgroup.c b/mm/swap_cgroup.c
> --- a/mm/swap_cgroup.c
> +++ b/mm/swap_cgroup.c
> @@ -201,6 +201,8 @@ void swap_cgroup_swapoff(int type)
>                       struct page *page = map[i];
>                       if (page)
>                               __free_page(page);
> +                     if (!(i % SWAP_CLUSTER_MAX))
> +                             cond_resched();
>               }
>               vfree(map);
>       }
> 
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-- 
Michal Hocko
SUSE Labs

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