Messages in this thread | | | Date | Thu, 27 Jul 2017 16:18:01 +0200 | From | Michal Hocko <> | Subject | Re: [PATCH 2/2] mm: replace TIF_MEMDIE checks by tsk_is_oom_victim |
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On Thu 27-07-17 23:01:05, Tetsuo Handa wrote: > Michal Hocko wrote: > > diff --git a/mm/memcontrol.c b/mm/memcontrol.c > > index 544d47e5cbbd..86a48affb938 100644 > > --- a/mm/memcontrol.c > > +++ b/mm/memcontrol.c > > @@ -1896,7 +1896,7 @@ static int try_charge(struct mem_cgroup *memcg, gfp_t gfp_mask, > > * bypass the last charges so that they can exit quickly and > > * free their memory. > > */ > > - if (unlikely(test_thread_flag(TIF_MEMDIE) || > > + if (unlikely(tsk_is_oom_victim(current) || > > fatal_signal_pending(current) || > > current->flags & PF_EXITING)) > > goto force; > > Did we check http://lkml.kernel.org/r/20160909140508.GO4844@dhcp22.suse.cz ?
I will double check.
> > diff --git a/mm/oom_kill.c b/mm/oom_kill.c > > index c9f3569a76c7..65cc2f9aaa05 100644 > > --- a/mm/oom_kill.c > > +++ b/mm/oom_kill.c > > @@ -483,7 +483,7 @@ static bool __oom_reap_task_mm(struct task_struct *tsk, struct mm_struct *mm) > > * [...] > > * out_of_memory > > * select_bad_process > > - * # no TIF_MEMDIE task selects new victim > > + * # no TIF_MEMDIE, selects new victim > > * unmap_page_range # frees some memory > > */ > > mutex_lock(&oom_lock); > > This comment is wrong. No MMF_OOM_SKIP mm selects new victim.
This hunk shouldn't make it to the patch.
-- Michal Hocko SUSE Labs
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