linux-kernel - Re: [RFC PATCH] mm/mbind: Introduce process_mbind() syscall for external memory binding

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Message-ID: <CAEZ6=UPDPyJ=gq7U50scPM7CUSc8mutJoTodeN6fPdd1YzzxVA@mail.gmail.com>
Date:   Wed, 22 Nov 2023 17:57:00 -0600
From:   Vinicius Petrucci <vpetrucci@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-mm@...r.kernel.org, linux-cxl@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-api@...r.kernel.org, minchan@...nel.org,
        dave.hansen@...ux.intel.com, x86@...nel.org,
        Jonathan.Cameron@...wei.com, aneesh.kumar@...ux.ibm.com,
        ying.huang@...el.com, dan.j.williams@...el.com,
        hezhongkun.hzk@...edance.com, fvdl@...gle.com, surenb@...gle.com,
        rientjes@...gle.com, hannes@...xchg.org, mhocko@...e.com,
        Hasan.Maruf@....com, jgroves@...ron.com, ravis.opensrc@...ron.com,
        sthanneeru@...ron.com, emirakhur@...ron.com,
        vtavarespetr@...ron.com, Gregory Price <gregory.price@...verge.com>
Subject: Re: [RFC PATCH] mm/mbind: Introduce process_mbind() syscall for
 external memory binding

On Wed, Nov 22, 2023 at 3:39 PM Andrew Morton <akpm@...ux-foundation.org> wrote:
> I'm having deja vu.  Not 10 minutes ago, Gregory sent out a patchset
> which does the same thing.
>
> https://lkml.kernel.org/r/20231122211200.31620-1-gregory.price@memverge.com
>

Certainly, it appears that we were addressing the same matter but
approaching it from different perspectives or discussions.
And we hastened to submit our RFCs before the Thanksgiving break. :-)

The patch I sent originated from the thread, and the subsequent
discussion commenced with the 'pidfd_set_mempolicy' RFC, possibly
influenced by the 'process_madvise.'
Specifically, the concept of a 'process_mbind()' syscall was suggested
by Frank van der Linden (Google):
https://lkml.kernel.org/linux-mm/Y0WEbCqJHjnqsg8n@dhcp22.suse.cz/T/#m950f26bdd6ce494b20ba170cc1f6db85e1924e8e

I would appreciate it if others could kindly evaluate what appears to
be the suitable course of action moving forward.

Thank you!