On Sat 28-05-16 17:16:05, Tetsuo Handa wrote:
> Commit e2fe14564d3316d1 ("oom_reaper: close race with exiting task")
> reduced frequency of needlessly selecting next OOM victim, but was
> calling mmput_async() when atomic_inc_not_zero() failed.
>
> Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
> Cc: Michal Hocko <mhocko@xxxxxxxx>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Thanks!
> ---
> mm/oom_kill.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/mm/oom_kill.c b/mm/oom_kill.c
> index dfb1ab6..0d781b8 100644
> --- a/mm/oom_kill.c
> +++ b/mm/oom_kill.c
> @@ -478,6 +478,7 @@ static bool __oom_reap_task(struct task_struct *tsk)
> mm = p->mm;
> if (!atomic_inc_not_zero(&mm->mm_users)) {
> task_unlock(p);
> + mm = NULL;
> goto unlock_oom;
> }
>
> --
> 1.8.3.1
>
--
Michal Hocko
SUSE Labs
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