Re: [PATCH 2/5] writeback: dirty position control

[Peter Zijlstra]

On Mon, 2011-08-08 at 22:11 +0800, Wu Fengguang wrote:
> It's actually dead code because (origin < limit) should never happen.
> I feel so good being able to drop 5 more lines of code :) 

OK, but that leaves me trying to figure out what origin is, and why its
4 * thresh.

I'm having a horrible time understanding this stuff.
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