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.
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This archive was generated by hypermail 2b29 : Fri Aug 31 2001 - 21:00:27 EST