Re: [PATCH] Fix the issue that lowmemkiller fell into a cycle that try to kill a task

[David Rientjes]

On Tue, 23 Sep 2014, 朱辉 wrote:

> > By the way, whether we need to modify out_of_memory() which also
> > try to kill task?
> 
> I am not sure because LMK handle the memory issue early than OOM.
> But I think this issue will not affect OOM because OOM has oom_zonelist_trylock and oom_zonelist_unlock.
> 

The oom killer tries to schedule other processes that exit the oom killer 
without being a victim itself and any process that cannot get the zonelist 
lock will do the same in the page allocator.  The low memory killer case 
is somewhat different.