On Fri, Feb 14, 2014 at 12:53 PM, Patrick Walton <pwal...@mozilla.com>wrote:

> For the first concern, I realized that pages like that are going to be
> sequential no matter what we do, of course, because of the way parallel
> tree traversals work. So never mind there. The O(n^2) update of overflow
> areas still concerns me though.
>

In Gecko we have the OverflowChangedTracker to avoid this. I presume it can
be parallelized.

Rob
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