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

Jaya Kumar
2007-02-17T09:47:57Z

On 1/12/07, Nick Piggin <nickpiggin@yahoo.com.au> 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.

Thanks,
jaya