linux-kernel - Re: [PATCH 1/2] memcg: dirty pages accounting and limiting infrastructure

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Message-Id: <20100224090958.ddca8ff1.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Wed, 24 Feb 2010 09:09:58 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Andrea Righi <arighi@...eler.com>
Cc:	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org,
	Suleiman Souhlal <suleiman@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Vivek Goyal <vgoyal@...hat.com>
Subject: Re: [PATCH 1/2] memcg: dirty pages accounting and limiting
 infrastructure

On Tue, 23 Feb 2010 10:28:53 +0100
Andrea Righi <arighi@...eler.com> wrote:

> On Mon, Feb 22, 2010 at 09:44:42PM +0530, Balbir Singh wrote:
> [snip]
> > > +void mem_cgroup_charge_dirty(struct page *page,
> > > +			enum zone_stat_item idx, int charge)
> > > +{
> > > +	struct mem_cgroup *mem;
> > > +	struct mem_cgroup_stat_cpu *cpustat;
> > > +	unsigned long flags;
> > > +	int cpu;
> > > +
> > > +	if (mem_cgroup_disabled())
> > > +		return;
> > > +	/* Translate the zone_stat_item into a mem_cgroup_stat_index */
> > > +	switch (idx) {
> > > +	case NR_FILE_DIRTY:
> > > +		idx = MEM_CGROUP_STAT_FILE_DIRTY;
> > > +		break;
> > > +	case NR_WRITEBACK:
> > > +		idx = MEM_CGROUP_STAT_WRITEBACK;
> > > +		break;
> > > +	case NR_WRITEBACK_TEMP:
> > > +		idx = MEM_CGROUP_STAT_WRITEBACK_TEMP;
> > > +		break;
> > > +	case NR_UNSTABLE_NFS:
> > > +		idx = MEM_CGROUP_STAT_UNSTABLE_NFS;
> > > +		break;
> > > +	default:
> > > +		return;
> > > +	}
> > > +	/* Charge the memory cgroup statistics */
> > > +	mem = get_mem_cgroup_from_page(page);
> > > +	if (!mem) {
> > > +		mem = root_mem_cgroup;
> > > +		css_get(&mem->css);
> > > +	}
> > > +
> > > +	local_irq_save(flags);
> > > +	cpu = get_cpu();
> > 
> > Kamezawa is in the process of changing these, so you might want to
> > look at and integrate with those patches when they are ready.
> 
> OK, I'll rebase the patch to -mm. Are those changes already included in
> mmotm?
> 
yes.

-Kame

> Thanks,
> -Andrea

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