linux-kernel - Re: [PATCH v2] prctl: Get private anonymous memory region name

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Message-ID: <20231126135644.GA7199@redhat.com>
Date:   Sun, 26 Nov 2023 14:56:44 +0100
From:   Oleg Nesterov <oleg@...hat.com>
To:     Rong Tao <rtoax@...mail.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Kees Cook <keescook@...omium.org>,
        Florent Revest <revest@...omium.org>,
        David Hildenbrand <david@...hat.com>,
        Josh Triplett <josh@...htriplett.org>,
        Andy Chiu <andy.chiu@...ive.com>,
        Joey Gouly <joey.gouly@....com>,
        Stefan Roesch <shr@...kernel.io>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Ondrej Mosnacek <omosnace@...hat.com>,
        Miguel Ojeda <ojeda@...nel.org>,
        "open list:MEMORY MANAGEMENT" <linux-mm@...ck.org>,
        open list <linux-kernel@...r.kernel.org>, rongtao@...tc.cn
Subject: Re: [PATCH v2] prctl: Get private anonymous memory region name

On 11/26, Rong Tao wrote:
>
> then the PR_GET_VMA interface should be provided accordingly,
> which is necessary, as the userspace program usually wants to know what
> VMA name it has configured for the anonymous page.

I don't really understand the use-case for PR_GET_VMA ...

But the patch looks reasonable and correct to me.

Reviewed-by: Oleg Nesterov <oleg@...hat.com>