On Tue, Apr 24, 2018 at 02:54:15PM +0100, Roman Gushchin wrote:
> From: Roman Gushchin <[email protected]>
> Date: Tue, 24 Apr 2018 14:44:14 +0100
> Subject: [PATCH] mm: ignore memory.min of abandoned memory cgroups
> 
> If a cgroup has no associated tasks, invoking the OOM killer
> won't help release any memory, so respecting the memory.min
> can lead to an infinite OOM loop or system stall.
> 
> Let's ignore memory.min of unpopulated cgroups.

Good point, this makes sense.

> Signed-off-by: Roman Gushchin <[email protected]>
> Cc: Johannes Weiner <[email protected]>
> Cc: Michal Hocko <[email protected]>
> Cc: Vladimir Davydov <[email protected]>
> Cc: Tejun Heo <[email protected]>

Acked-by: Johannes Weiner <[email protected]>

> @@ -2549,8 +2549,11 @@ static bool shrink_node(pg_data_t *pgdat, struct 
> scan_control *sc)
>                               /*
>                                * Hard protection.
>                                * If there is no reclaimable memory, OOM.
> +                              * Abandoned cgroups are loosing protection,

                                                         losing

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