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SubjectRe: [patch -mmotm] oom: only oom kill exiting tasks with attached memory
On Sun, Jun 7, 2009 at 3:42 AM, David Rientjes<> wrote:
> When a task is chosen for oom kill and is found to be PF_EXITING,
> __oom_kill_task() is called to elevate the task's timeslice and give it
> access to memory reserves so that it may quickly exit.
> This privilege is unnecessary, however, if the task has already detached
> its mm.  Although its possible for the mm to become detached later since
> task_lock() is not held, __oom_kill_task() will simply be a no-op in such
> circumstances.
> Subsequently, it is no longer necessary to warn about killing mm-less
> tasks since it is a no-op.
> Cc: Rik van Riel <>
> Signed-off-by: David Rientjes <>

Seems like a good change to make. Did you encounter this situation on
a real machine?

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