Re: [PATCH] mm/oom_kill.c: don't kill TASK_UNINTERRUPTIBLE tasks
From: David Rientjes
Date: Mon Sep 21 2015 - 19:08:48 EST
On Sat, 19 Sep 2015, Michal Hocko wrote:
> Nack to this. TASK_UNINTERRUPTIBLE should be time constrained/bounded
> state. Using it as an oom victim criteria makes the victim selection
> less deterministic which is undesirable. As much as I am aware of
> potential issues with the current implementation, making the behavior
> more random doesn't really help.
>
Agreed, we can't avoid killing a process simply because it is in D state,
this isn't an indication that the process will not be able to exit and in
the worst case could panic the system if all other processes cannot be oom
killed.
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