Re: [PATCH v8 3/3] mm: reinititalise user and admin reserves ifmemory is added or removed

[Andrew Morton]

On Mon, 8 Apr 2013 15:07:38 -0400 Andrew Shewmaker <agshew@xxxxxxxxx> wrote:

> This patch alters the admin and user reserves of the previous patches 
> in this series when memory is added or removed.
> 
> If memory is added and the reserves have been eliminated or increased above
> the default max, then we'll trust the admin.
> 
> If memory is removed and there isn't enough free memory, then we
> need to reset the reserves.
> 
> Otherwise keep the reserve set by the admin.
> 
> The reserve reset code is the same as the reserve initialization code.
> 
> Does this sound reasonable to other people? I figured that hot removal
> with too large of memory in the reserves was the most important case 
> to get right.
> 
> I tested hot addition and removal by triggering it via sysfs. The reserves 
> shrunk when they were set high and memory was removed. They were reset 
> higher when memory was added again.

I have added your Signed-off-by: to my copy of this patch.
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