From: Nick Piggin <piggin@cyberone.com.au>
If refill_inactive_zone() is running in its dont-reclaim-mapped-memory mode
we are tossing away the referenced infomation on active mapped pages.
So put that info back if we're not going to deactivate the page.
---
mm/vmscan.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff -puN mm/vmscan.c~vm-refill_inactive-preserve-referenced mm/vmscan.c
--- 25/mm/vmscan.c~vm-refill_inactive-preserve-referenced 2004-02-28 23:37:56.000000000 -0800
+++ 25-akpm/mm/vmscan.c 2004-02-28 23:37:56.000000000 -0800
@@ -664,17 +664,17 @@ refill_inactive_zone(struct zone *zone,
page = list_entry(l_hold.prev, struct page, lru);
list_del(&page->lru);
if (page_mapped(page)) {
- pte_chain_lock(page);
- if (page_mapped(page) && page_referenced(page)) {
- pte_chain_unlock(page);
+ if (!reclaim_mapped) {
list_add(&page->lru, &l_active);
continue;
}
- pte_chain_unlock(page);
- if (!reclaim_mapped) {
+ pte_chain_lock(page);
+ if (page_referenced(page)) {
+ pte_chain_unlock(page);
list_add(&page->lru, &l_active);
continue;
}
+ pte_chain_unlock(page);
}
/*
* FIXME: need to consider page_count(page) here if/when we
_