Patched against 2.6.19 leads to:
mm/vmscan.c: In function `shrink_pvma_scan_ptes':
mm/vmscan.c:1340: too many arguments to function `page_remove_rmap'
So changed
page_remove_rmap(series.pages[i], vma);
to
page_remove_rmap(series.pages[i]);
I've worked on 2.6.19, but when update to 2.6.20-rc5, the function is changed.
But your patch doesn't offer any swap-performance improvement for both swsusp
or tmpfs. Swap-in is still half speed of Swap-out.
Current Linux page allocation fairly provides pages for every process, since
swap daemon only is started when memory is low, so when it starts to scan
active_list, the private pages of processes are messed up with each other,
vmscan.c:shrink_list() is the only approach to attach disk swap page to page on
active_list, as the result, all private pages lost their affinity on swap
partition. I will give a testlater...
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