Re: [PATCH 3/5] mm: Implement IO-less balance_dirty_pages()

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On Fri, 2011-02-04 at 14:09 +0100, Peter Zijlstra wrote:
> 
> You can do that by keeping ->bw_to_write in task_struct and normalize it
> by the estimated bdi bandwidth (patch 5), that way, when you next
> increment it it will turn out to be lower and the wait will be shorter.

The down-side is of course that time will leak from the system on exit,
since its impossible to map back to a bdi.

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