Re: [RFC][BUGFIX][PATCH 0/2] transhuge-memcg: some fixes (Re: Transparent Hugepage Support #25)

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On Fri, 18 Jun 2010 03:08:40 +0200, Andrea Arcangeli <aarcange@xxxxxxxxxx> wrote:
> On Wed, Jun 02, 2010 at 02:44:38PM +0900, Daisuke Nishimura wrote:
> > These are trial patches to fix the problem(based on THP-25).
> > 
> > [1/2] is a simple bug fix, and can be folded into "memcg compound(commit d16259c1
> > at the http://git.kernel.org/?p=linux/kernel/git/andrea/aa.git)".
> > [2/2] is a main patch.
> > 
> > Unfortunately, there seems to be some problems left, so I'm digging it and
> > need more tests.
> > Any comments are welcome.
> 
> Both are included in -26, but like you said there are problems
> left... are you willing to fix those too?
Will do if necessary, but hmm, I heard from KAMEZAWA-san that he has already sent
some patches to fix the similar problems on RHEL6, and I prefer his fixes to mine.
Should I(or KAMEZAWA-san?) forward port his patches onto current aa.git ?

> There's some slight
> difference in the code here and there that makes the fixes not so
> portable across releases (uncharge as param of move_account which
> wasn't there before as an example...).
> 
Agreed. And I think you'll see some extra changes of memcg in 2.6.36...
Any way, I'll do some test in both RHEL6 and aa.git when I have a time,
and feel free to tell me if you have any troubles in back/forward porting
memcg's fixes.


Thanks,
Daisuke Nishimura.

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