[PATCH v6 00/15] memory-hotplug: hot-remove physical memory

Andrew Morton akpm at linux-foundation.org
Thu Jan 10 10:33:24 EST 2013

On Wed, 9 Jan 2013 17:32:24 +0800
Tang Chen <tangchen at cn.fujitsu.com> wrote:

> This patch-set aims to implement physical memory hot-removing.

As you were on th patch delivery path, all of these patches should have
your Signed-off-by:.  But some were missing it.  I fixed this in my
copy of the patches.

I suspect this patchset adds a significant amount of code which will
not be used if CONFIG_MEMORY_HOTPLUG=n.  "[PATCH v6 06/15]
memory-hotplug: implement register_page_bootmem_info_section of
sparse-vmemmap", for example.  This is not a good thing, so please go
through the patchset (in fact, go through all the memhotplug code) and
let's see if we can reduce the bloat for CONFIG_MEMORY_HOTPLUG=n

This needn't be done immediately - it would be OK by me if you were to
defer this exercise until all the new memhotplug code is largely in
place.  But please, let's do it.

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