Messages in this thread | | | Date | Wed, 31 Jan 2001 00:16:43 -0200 (BRST) | From | Marcelo Tosatti <> | Subject | Re: [PATCH] 2.4.1 find_page_nolock fixes |
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On Tue, 30 Jan 2001, Rik van Riel wrote:
> Hi Linus, > > the patch below contains 3 small changes to mm/filemap.c: > > 1. replace the aging in __find_page_nolock() with setting > PageReferenced(), otherwise a large number of small > reads from (or writes to) a page can drive up the page > age unfairly > > 2. remove the wakeup of kswapd from __find_page_nolock(), > the wakeup condition is complex and leaving out the > wakeup has no influence on any workload I tested in > the last few weeks > > 3. add a __find_page_simple(), which is like __find_page_nolock() > but only needs 2 arguments and doesn't touch the page ... this > can be used by IO clustering and other things that really don't > want to influence page aging, removing the 3rd argument also > keeps things simple
The swapin readahead still makes the page referenced bit set, and it should not as we discussed previously.
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