Re: [PATCH] writeback: prevent bandwidth calculation overflow

[Wu Fengguang]

On Fri, Nov 19, 2010 at 12:02:01AM +0800, Peter Zijlstra wrote:
> On Thu, 2010-11-18 at 23:44 +0800, Wu Fengguang wrote:
> > +               pause = HZ * pages_dirtied / (bw + 1);
> 
> Shouldn't that be using something like div64_u64 ?

OK, but a dumb question: gcc cannot handle this implicitly?

Thanks,
Fengguang
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