Re: [PATCH RFCv2 6/6] memory-hotplug.txt: Add some details about locking internals

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To: David Hildenbrand <david@xxxxxxxxxx>, "linux-mm@xxxxxxxxx" <linux-mm@xxxxxxxxx>
Subject: Re: [PATCH RFCv2 6/6] memory-hotplug.txt: Add some details about locking internals
From: Pasha Tatashin <Pavel.Tatashin@xxxxxxxxxxxxx>
Date: Thu, 30 Aug 2018 19:38:43 +0000
Accept-language: en-US
Cc: "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-doc@xxxxxxxxxxxxxxx" <linux-doc@xxxxxxxxxxxxxxx>, "linuxppc-dev@xxxxxxxxxxxxxxxx" <linuxppc-dev@xxxxxxxxxxxxxxxx>, "linux-acpi@xxxxxxxxxxxxxxx" <linux-acpi@xxxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, "devel@xxxxxxxxxxxxxxxxxxxxxx" <devel@xxxxxxxxxxxxxxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
In-reply-to: <20180821104418.12710-7-david@redhat.com>
References: <20180821104418.12710-1-david@redhat.com> <20180821104418.12710-7-david@redhat.com>

Reviewed-by: Pavel Tatashin <pavel.tatashin@xxxxxxxxxxxxx>

On 8/21/18 6:44 AM, David Hildenbrand wrote:
> Let's document the magic a bit, especially why device_hotplug_lock is
> required when adding/removing memory and how it all play together with
> requests to online/offline memory from user space.
>

References:
- [PATCH RFCv2 0/6] mm: online/offline_pages called w.o. mem_hotplug_lock
  - From: David Hildenbrand
- [PATCH RFCv2 6/6] memory-hotplug.txt: Add some details about locking internals
  - From: David Hildenbrand

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