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SubjectRe: [PATCH Bug fix 0/5] Bug fix for physical memory hot-remove.
On 01/25/2013 09:17 PM, Michal Hocko wrote:
> On Wed 23-01-13 06:29:31, Simon Jeons wrote:
>> On Tue, 2013-01-22 at 19:42 +0800, Tang Chen wrote:
>>> Here are some bug fix patches for physical memory hot-remove. All these
>>> patches are based on the latest -mm tree.
>>> git:// akpm
>>> And patch1 and patch3 are very important.
>>> patch1: free compound pages when freeing memmap, otherwise the kernel
>>> will panic the next time memory is hot-added.
>>> patch3: the old way of freeing pagetable pages was wrong. We should never
>>> split larger pages into small ones.
>> Hi Tang,
>> I remember your big physical memory hot-remove patchset has already
>> merged by Andrew, but where I can find it? Could you give me git tree
>> address?
> Andrew tree is also mirrored into a git tree.
> It contains only Memory management patches on top of the last major
> release (since-.X.Y branch).

Hi Michal,

I'm not sure I got your meaning. :)

In akpm,
I can find the following commit.

commit deed0460e01b3968f2cf46fb94851936535b7e0d
Author: Tang Chen <>
Date: Sat Jan 19 11:07:13 2013 +1100

memory-hotplug: do not allocate pgdat if it was not freed when

This is one of memory hot-remove patches. Please try to update the
mirror tree,
and try to find the above commit.

Thanks. :)

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