Re: [v4 PATCH] mm: introduce arg_lock to protect arg_start|end and env_start|end in mm_struct

[Cyrill Gorcunov]

On Wed, Apr 18, 2018 at 11:03:14AM +0200, Michal Hocko wrote:
> > > 
> > > What about something like the following?
> > > "
> > > arg_lock protects concurent updates but we still need mmap_sem for read
> > > to exclude races with do_brk.
> > > "
> > > Acked-by: Michal Hocko <mhocko@xxxxxxxx>
> > 
> > Yes, thanks! Andrew, could you slightly update the changelog please?
> 
> No, I meant it to be a comment in the _code_.

Ah, I see. Then small patch on top should do the trick.