[PATCH 0/6] memcg: hierarchy updates (v4)

[KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>]

Hi, this is memcg hierarchy series v4. but I changed the title.
Thank you for many replies to v3. 

This is against 2.6.26-rc5-mm3. 

I rearranged the patch stack and much amount of codes are rewritten.
I think I answers most of advices in this version. If I misses, please
point out again, sorry. 

Balbir, I'd like to write a generic infrastructure to allow me and you to
implement what we want. So, please check patches in the view, 
how res_counter is used and whether my codes can have a bad effect to
what you want or not.

Changelog:
 - rearranged patch stack.
 - "limit change" handling is divided.
 - moves basic res_counter handling to res_counter from memcg.

Short description of patches.
 - [1/6] ...a callback for change-of-limit support to res_counter.
 - [2/6] ...make use of change-of-limit support in memcg.
 - [3/6] ...a special case of implicit change-of-limit at rmdir()
 - [4/6] ...a hierarchy support infrastructure for res_counter.
 - [5/6] ...HARDWALL hierarchy support in res_counter.
 - [6/6] ...HARDWALL hierarhcy in memcg.

It seems rc5-mm3 needs more test and I  will not be able to answer e-mail quickly.
please check when you have free time ;)

Anyway, I'd like to push [1/6] and [2/6] , at first. Others will be scheduled
later.

Thanks,
-Kame




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