Re: [PATCH/RFC 2.6.20-rc4 1/1] fbdev,mm: hecuba/E-Ink fbdev driver

From: Jaya Kumar
Date: Sat Feb 17 2007 - 04:48:17 EST

On 1/12/07, Nick Piggin <nickpiggin@xxxxxxxxxxxx> wrote:
Jaya Kumar wrote:
> - write so get page_mkwrite where we add this page to a list
> - also schedules a workqueue task to be run after a delay
> - app continues writing to that page with no additional cost
> - the workqueue task comes in and unmaps the pages on the list, then
> completes the work associated with updating the framebuffer

Have you thought about implementing a traditional write-back cache using
the dirty bits, rather than unmapping the page?

Ah, sorry, I erred in my description. I'm not unmapping pages, I'm
calling page_mkclean which uses the dirty bits.

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