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SubjectRe: [PATCH -mm][preview] memcg: a patch series for next [0/9]
On Wed, 20 Aug 2008 09:00:50 +0530
Balbir Singh <balbir@linux.vnet.ibm.com> wrote:

> KAMEZAWA Hiroyuki wrote:
> > Hi,
> >
> > This post is for showing what I'm trying now.
> >
> > This patch set is for memory resource controller.
> > 4 purposes here.
> > - improve performance of memcg.
> > - remove lock_page_cgroup()
> > - making page_cgroup->flags to be atomic_ops.
> > - support mem+swap controller.
> >
> > But this is still under test and the series is not well organised.
> > and base tree is old. (2.6.27-rc1-mm1) I'll rebase this set to newer mmtom tree.
> >
> > Maybe this set have some troubles/objections but I think the direction is not bad.
> >
> > Patch description. (patch ordering is bad. I'll fix in the next post.)
> >
> > [1/9] ... private_counter ...replace res_counter with my own counter.
> > This is for supporting mem+swap controller.
> > (And I think memcg has a bit different characteristics from other
> > users of res_counter....)
> >
> > [2/9] ... change-order-uncharge ...
> > This patch is for making it easy to handle swap-cache.
> >
> > [3/9] ... atomic_flags
> > This patch changes operations for page_cgroup->flags to be atomic_ops.
> >
> > [4/9] ... delayed freeing.
> > delaying to free page_cgroup at uncharge.
> >
> > [5/9] ... RCU freeing of page_cgroup
> > free page_cgroup by RCU.
> >
> > [6/9] ... lockress page cgroup.
> > remove lock_page_cgroup() and use RCU semantics.
> >
> > [7/9] ... add preftech
> > add prefetch() macro
> >
> > [8/9] ... mem+swap controller base.
> > introduce mem+swap controller. A bit big patch....but have tons of TODO.
> > and have troubles. (it seems it's difficult to cause OOM killer.)
> >
> > [9/9] ... mem+swap controller control files.
> > add mem+swap controller's control files.
> >
> > I'd like to push patch [2,3,4,5,6,7] first.
> >
>
> I took a quick look at the patches, patch 1 seemed not so clear, why can't we
> enhance or fix resource counters? I'll review/test the patches tonight.
>
patch 1 is for patch 8. (patch order is too bad.)
please ignore this version. this is just a preview.(Sorry)

I'm now writing easier-to-read one,

thanks,
-kame





> --
> Balbir
>



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