> Hi, KOSAKI. > > On Tue, Aug 31, 2010 at 9:56 AM, KOSAKI Motohiro > <kosaki.motohiro@xxxxxxxxxxxxxx> wrote: > >> diff --git a/mm/vmscan.c b/mm/vmscan.c > >> index 1b145e6..0b8a3ce 100644 > >> --- a/mm/vmscan.c > >> +++ b/mm/vmscan.c > >> @@ -1747,7 +1747,7 @@ static void shrink_zone(int priority, struct zone *zone, > >> * Even if we did not try to evict anon pages at all, we want to > >> * rebalance the anon lru active/inactive ratio. > >> */ > >> - if (inactive_anon_is_low(zone, sc) && nr_swap_pages > 0) > >> + if (nr_swap_pges > 0 && inactive_anon_is_low(zone, sc)) > > > > Sorry, I don't find any difference. What is your intention? > > > > My intention is that smart gcc can compile out inactive_anon_is_low > call in case of non swap configurable system. Do you really check it on your gcc? nr_swap_pages is not file scope variable, it's global variable. afaik, current gcc's link time optimization is not so cool. Do you have a disassemble list? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href