linux-kernel - Re: [PATCH 5/5] mm/hotplug: export try_online

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Message-ID: <20190617065921.GV3436@hirez.programming.kicks-ass.net>
Date:   Mon, 17 Jun 2019 08:59:21 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Alastair D'Silva <alastair@....ibm.com>
Cc:     alastair@...ilva.org, Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>,
        Oscar Salvador <osalvador@...e.com>,
        Michal Hocko <mhocko@...e.com>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        Wei Yang <richard.weiyang@...il.com>,
        Arun KS <arunks@...eaurora.org>, Qian Cai <cai@....pw>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Jiri Kosina <jkosina@...e.cz>,
        Mukesh Ojha <mojha@...eaurora.org>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Baoquan He <bhe@...hat.com>,
        Logan Gunthorpe <logang@...tatee.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] mm/hotplug: export try_online_node

On Mon, Jun 17, 2019 at 02:36:31PM +1000, Alastair D'Silva wrote:
> From: Alastair D'Silva <alastair@...ilva.org>
> 
> If an external driver module supplies physical memory and needs to expose

Why would you ever want to allow a module to do such a thing?