linux-kernel - Re: [patch 3/7] mm: make page writeback obey cpuset constraints

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Date:	Tue, 28 Oct 2008 12:16:50 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Peter Zijlstra <peterz@...radead.org>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Nick Piggin <npiggin@...e.de>, Paul Menage <menage@...gle.com>,
	Derek Fults <dfults@....com>, linux-kernel@...r.kernel.org
Subject: Re: [patch 3/7] mm: make page writeback obey cpuset constraints

On Tue, 28 Oct 2008, Peter Zijlstra wrote:

> > +int cpuset_populate_dirty_limits(struct dirty_limits *dl,
> > +				 unsigned long *dirtyable_memory,
> > +				 unsigned long *nr_mapped,
> > +				 const nodemask_t *nodes)
> > +{
> > +	int node;
> > +
> > +	if (likely(!nodes || nodes_subset(node_online_map, *nodes)))
> > +		return 0;
> > +	for_each_node_mask(node, *nodes) {
> > +		if (!node_online(node))
> > +			continue;
> > +		dl->nr_dirty += node_page_state(node, NR_FILE_DIRTY);
> > +		dl->nr_unstable += node_page_state(node, NR_UNSTABLE_NFS);
> > +		dl->nr_writeback += node_page_state(node, NR_WRITEBACK);
> > +		dirtyable_memory +=
> 
> *dirtyable_memory perhaps?
> 

Indeed, fixed.

> > +			node_page_state(node, NR_ACTIVE_ANON) +
> > +			node_page_state(node, NR_ACTIVE_FILE) +
> > +			node_page_state(node, NR_INACTIVE_ANON) +
> > +			node_page_state(node, NR_INACTIVE_FILE) +
> > +			node_page_state(node, NR_FREE_PAGES);
> > +		nr_mapped +=
> 
> idem?
> 

Likewise.
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