On Thu 27-07-17 11:03:55, Michal Hocko wrote: > Hi, > this is a part of a larger series I posted back in Oct last year [1]. I > have dropped patch 3 because it was incorrect and patch 4 is not > applicable without it. > > The primary reason to apply patch 1 is to remove a risk of the complete > memory depletion by oom victims. While this is a theoretical risk right > now there is a demand for memcg aware oom killer which might kill all > processes inside a memcg which can be a lot of tasks. That would make > the risk quite real. > > This issue is addressed by limiting access to memory reserves. We no > longer use TIF_MEMDIE to grant the access and use tsk_is_oom_victim > instead. See Patch 1 for more details. Patch 2 is a trivial follow up > cleanup. > > I would still like to get rid of TIF_MEMDIE completely but I do not have > time to do it now and it is not a pressing issue. > > [1] http://lkml.kernel.org/r/20161004090009.7974-1-mho...@kernel.org
Are there any more comments/questions? I will resubmit if not. -- Michal Hocko SUSE Labs
