On Mon 28-01-13 09:33:49, Tang Chen wrote:

On 01/25/2013 09:17 PM, Michal Hocko wrote:

quoted

On Wed 23-01-13 06:29:31, Simon Jeons wrote:

quoted

On Tue, 2013-01-22 at 19:42 +0800, Tang Chen wrote:

quoted

Here are some bug fix patches for physical memory hot-remove. All these
patches are based on the latest -mm tree.
git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.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.
http://git.kernel.org/?p=linux/kernel/git/mhocko/mm.git;a=summary

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. :)

Well, the mirror tree gets updated when Andrew releases mmotm and quite
often even when mmots is released.
All patches in the mm section are applied.

In http://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git akpm,
I can find the following commit.

commit deed0460e01b3968f2cf46fb94851936535b7e0d
Author: Tang Chen [off-list ref]
Date:   Sat Jan 19 11:07:13 2013 +1100

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


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

That one is in my mirror tree as f48bf999 (memory-hotplug: do not
allocate pdgat if it was not freed when offline.).
-- 
Michal Hocko
SUSE Labs