Re: [v8 1/4] mm, oom: refactor the oom_kill_process() function

From: David Rientjes
Date: Mon Sep 11 2017 - 16:51:26 EST

On Mon, 11 Sep 2017, Roman Gushchin wrote:

> The oom_kill_process() function consists of two logical parts:
> the first one is responsible for considering task's children as
> a potential victim and printing the debug information.
> The second half is responsible for sending SIGKILL to all
> tasks sharing the mm struct with the given victim.
> This commit splits the oom_kill_process() function with
> an intention to re-use the the second half: __oom_kill_process().
> The cgroup-aware OOM killer will kill multiple tasks
> belonging to the victim cgroup. We don't need to print
> the debug information for the each task, as well as play
> with task selection (considering task's children),
> so we can't use the existing oom_kill_process().
> Signed-off-by: Roman Gushchin <guro@xxxxxx>
> Cc: Michal Hocko <mhocko@xxxxxxxxxx>
> Cc: Vladimir Davydov <>
> Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
> Cc: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
> Cc: David Rientjes <rientjes@xxxxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: Tejun Heo <tj@xxxxxxxxxx>
> Cc: kernel-team@xxxxxx
> Cc: cgroups@xxxxxxxxxxxxxxx
> Cc: linux-doc@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: linux-mm@xxxxxxxxx

Acked-by: David Rientjes <rientjes@xxxxxxxxxx>