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Date:   Wed, 30 Jun 2021 17:45:13 -0400
From:   Johannes Weiner <hannes@cmpxchg.org>
To:     Suren Baghdasaryan <surenb@google.com>
Cc:     Andy Lutomirski <luto@kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Michal Hocko <mhocko@kernel.org>,
        Michal Hocko <mhocko@suse.com>,
        David Rientjes <rientjes@google.com>,
        Matthew Wilcox <willy@infradead.org>,
        Roman Gushchin <guro@fb.com>, Rik van Riel <riel@surriel.com>,
        Minchan Kim <minchan@kernel.org>,
        Christian Brauner <christian@brauner.io>,
        Christoph Hellwig <hch@infradead.org>,
        Oleg Nesterov <oleg@redhat.com>,
        David Hildenbrand <david@redhat.com>,
        Jann Horn <jannh@google.com>,
        Shakeel Butt <shakeelb@google.com>,
        Tim Murray <timmurray@google.com>,
        Linux API <linux-api@vger.kernel.org>,
        Linux-MM <linux-mm@kvack.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Android Kernel Team <kernel-team@android.com>
Subject: Re: [PATCH 1/1] mm: introduce process_reap system call
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References: <20210623192822.3072029-1-surenb@google.com>
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On Wed, Jun 30, 2021 at 11:51:36AM -0700, Suren Baghdasaryan wrote:
> On Wed, Jun 30, 2021 at 11:26 AM Andy Lutomirski <luto@kernel.org> wrote:
> > Also, please consider removing all mention of the word "reap" from the
> > user API.  For better or for worse, "reap" in UNIX refers to what
> > happens when a dead task gets wait()ed.  I sincerely wish I could go
> > back in time and gently encourage whomever invented that particular
> > abomination to change their mind, but my time machine doesn't work.
> 
> I see. Thanks for the note. How about process_mem_release() and
> replacing reap with release everywhere?

I don't quite understand the objection. This syscall works on tasks
that are at the end of their life, right? Isn't something like
process_mreap() establishing exactly the mental link we want here?
Release is less descriptive for what this thing is to be used for.