On August 28, 2001 05:36 am, Marcelo Tosatti wrote:
> Linus,
>
> I just noticed that the new page_launder() logic has a big bad problem.
>
> The window to find and free previously written out pages by page_launder()
> is the amount of writeable pages on the inactive dirty list.
>
> We'll keep writing out dirty pages (as long as they are available) even if
> have a ton of cleaned pages: its just that we don't see them because we
> scan a small piece of the inactive dirty list each time.
>
> That obviously did not happen with the full scan behaviour.
>
> With asynchronous i_dirty->i_clean movement (moving a cleaned page to the
> clean list at the IO completion handler. Please don't consider that for
> 2.4 :)) this would not happen, too.
Or we could have parallel lists for dirty and clean.
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This archive was generated by hypermail 2b29 : Fri Aug 31 2001 - 21:00:30 EST