On Sun, Feb 21, 2010 at 01:38:28PM -0800, David Rientjes wrote:
> On Sun, 21 Feb 2010, Andrea Righi wrote:
>
> > diff --git a/mm/page-writeback.c b/mm/page-writeback.c
> > index 0b19943..c9ff1cd 100644
> > --- a/mm/page-writeback.c
> > +++ b/mm/page-writeback.c
> > @@ -137,10 +137,11 @@ static struct prop_descriptor vm_dirties;
> > */
> > static int calc_period_shift(void)
> > {
> > - unsigned long dirty_total;
> > + unsigned long dirty_total, dirty_bytes;
> >
> > - if (vm_dirty_bytes)
> > - dirty_total = vm_dirty_bytes / PAGE_SIZE;
> > + dirty_bytes = mem_cgroup_dirty_bytes();
> > + if (dirty_bytes)
> > + dirty_total = dirty_bytes / PAGE_SIZE;
> > else
> > dirty_total = (vm_dirty_ratio * determine_dirtyable_memory()) /
> > 100;
>
> This needs a comment since mem_cgroup_dirty_bytes() doesn't imply that it
> is responsible for returning the global vm_dirty_bytes when that's
> actually what it does (both for CONFIG_CGROUP_MEM_RES_CTRL=n and root
> cgroup).
Fair enough.
Thanks,
-Andrea
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