linux-kernel - Re: [RFC]: userspace memory reaping

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Message-ID: <20201103093550.GE21990@dhcp22.suse.cz>
Date:   Tue, 3 Nov 2020 10:35:50 +0100
From:   Michal Hocko <mhocko@...e.com>
To:     Suren Baghdasaryan <surenb@...gle.com>
Cc:     linux-api@...r.kernel.org, linux-mm <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Rientjes <rientjes@...gle.com>,
        Matthew Wilcox <willy@...radead.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Roman Gushchin <guro@...com>, Rik van Riel <riel@...riel.com>,
        Minchan Kim <minchan@...nel.org>,
        Christian Brauner <christian@...uner.io>,
        Oleg Nesterov <oleg@...hat.com>,
        Tim Murray <timmurray@...gle.com>,
        kernel-team <kernel-team@...roid.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Mel Gorman <mgorman@...hsingularity.net>
Subject: Re: [RFC]: userspace memory reaping

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...
-- 
Michal Hocko
SUSE Labs