Re: [patch 3/7 -mm] oom: select task from tasklist for mempolicy ooms

Rik van Riel
2010-02-10T22:48:16Z

On 02/10/2010 11:32 AM, David Rientjes wrote:
> The oom killer presently kills current whenever there is no more memory
> free or reclaimable on its mempolicy's nodes. There is no guarantee that
> current is a memory-hogging task or that killing it will free any
> substantial amount of memory, however.
>
> In such situations, it is better to scan the tasklist for nodes that are
> allowed to allocate on current's set of nodes and kill the task with the
> highest badness() score. This ensures that the most memory-hogging task,
> or the one configured by the user with /proc/pid/oom_adj, is always
> selected in such scenarios.
>
> Signed-off-by: David Rientjes<rientjes@google.com>

Acked-by: Rik van Riel <riel@redhat.com>

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