# Re: \[PATCH v3 1/2\] mm: introduce process\_mrelease system call

- From: Shakeel Butt \<hidden\>
- Date: 2021-07-23 13:41:11 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2021/07/1455974
- Thread: https://ratatoskr.run/linux-api/2021/07/1455552/t.md

```text
On Thu, Jul 22, 2021 at 11:20 PM Michal Hocko [ref] wrote:
>
> On Thu 22-07-21 21:47:56, Suren Baghdasaryan wrote:
> > On Thu, Jul 22, 2021, 7:04 PM Shakeel Butt [ref] wrote:
> >
> > > On Thu, Jul 22, 2021 at 6:14 PM Suren Baghdasaryan [ref]
> > > wrote:
> > > >
> > > [...]
> > > > +
> > > > +       mmap_read_lock(mm);
> > >
> > > How about mmap_read_trylock(mm) and return -EAGAIN on failure?
> > >
> >
> > That sounds like a good idea. Thanks! I'll add that in the next respin.
>
> Why is that a good idea? Can you do anything meaningful about the
> failure other than immediately retry the syscall and hope for the best?
>

Yes we can. Based on the situation/impact we can select more victims.
```