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mm: introduce zone_reclaim struct

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Add zone_reclam_stat struct for later enhancement.

A later patch uses this.  This patch doesn't any behavior change (yet).

Reviewed-by: KAMEZAWA Hiroyuki <[email protected]>
Signed-off-by: KOSAKI Motohiro <[email protected]>
Acked-by: Rik van Riel <[email protected]>
Cc: Balbir Singh <[email protected]>
Cc: Daisuke Nishimura <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: KOSAKI Motohiro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
KOSAKI Motohiro 2009-01-07 18:08:15 -08:00 • committed by Linus Torvalds
commit 6e9015716a
4 changed files with 56 additions and 35 deletions
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12
mm/swap.c
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@ -157,6 +157,7 @@ void rotate_reclaimable_page(struct page *page)
void activate_page(struct page *page)
{
struct zone *zone = page_zone(page);
struct zone_reclaim_stat *reclaim_stat = &zone->reclaim_stat;
spin_lock_irq(&zone->lru_lock);
if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) {
@ -169,8 +170,8 @@ void activate_page(struct page *page)
add_page_to_lru_list(zone, page, lru);
__count_vm_event(PGACTIVATE);
zone->recent_rotated[!!file]++;
zone->recent_scanned[!!file]++;
reclaim_stat->recent_rotated[!!file]++;
reclaim_stat->recent_scanned[!!file]++;
}
spin_unlock_irq(&zone->lru_lock);
}
@ -385,6 +386,8 @@ void ____pagevec_lru_add(struct pagevec *pvec, enum lru_list lru)
{
int i;
struct zone *zone = NULL;
struct zone_reclaim_stat *reclaim_stat = NULL;
VM_BUG_ON(is_unevictable_lru(lru));
for (i = 0; i < pagevec_count(pvec); i++) {
@ -396,6 +399,7 @@ void ____pagevec_lru_add(struct pagevec *pvec, enum lru_list lru)
if (zone)
spin_unlock_irq(&zone->lru_lock);
zone = pagezone;
reclaim_stat = &zone->reclaim_stat;
spin_lock_irq(&zone->lru_lock);
}
VM_BUG_ON(PageActive(page));
@ -403,10 +407,10 @@ void ____pagevec_lru_add(struct pagevec *pvec, enum lru_list lru)
VM_BUG_ON(PageLRU(page));
SetPageLRU(page);
file = is_file_lru(lru);
zone->recent_scanned[file]++;
reclaim_stat->recent_scanned[file]++;
if (is_active_lru(lru)) {
SetPageActive(page);
zone->recent_rotated[file]++;
reclaim_stat->recent_rotated[file]++;
}
add_page_to_lru_list(zone, page, lru);
}