Re: [patch 1/2] mm, memcg: avoid oom notification when current needsaccess to memory reserves

[David Rientjes]

On Tue, 10 Dec 2013, Michal Hocko wrote:

> > What exactly would you like to see?
> 
> How often do you see PF_EXITING tasks which haven't been killed causing
> a pointless notification? Because fatal_signal_pending and TIF_MEMDIE
> cases are already handled because we bypass charges in those cases (except
> for user OOM killer killed tasks which don't get TIF_MEMDIE and that
> should be fixed).
> 

Triggering a pointless notification with PF_EXITING is rare, yet one 
pointless notification can be avoided with the patch.  Additionally, it 
also avoids a pointless notification for a racing SIGKILL.
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