Re: [RFC]: userspace memory reaping

[Minchan Kim]

On Tue, Nov 03, 2020 at 10:35:50AM +0100, Michal Hocko wrote:
> On Mon 02-11-20 12:29:24, Suren Baghdasaryan wrote:
> [...]
> > To follow up on this. Should I post an RFC implementing SIGKILL_SYNC
> > which in addition to sending a kill signal would also reap the
> > victim's mm in the context of the caller? Maybe having some code will
> > get the discussion moving forward?
> 
> Yeah, having a code, even preliminary, might help here. This definitely
> needs a good to go from process management people as that proper is land
> full of surprises...

Just to remind a idea I suggested to reuse existing concept

    fd = pidfd_open(victim process)
    fdatasync(fd);
    close(fd);