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[PATCH] mm: PageActive no testset

Browse source 
PG_active is protected by zone->lru_lock, it does not need TestSet/TestClear
operations.

Signed-off-by: Nick Piggin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Nick Piggin 2006-03-22 00:08:00 -08:00 • committed by Linus Torvalds
commit 4c84cacfa4
3 changed files with 5 additions and 6 deletions
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4
mm/swap.c
View file

@ -374,8 +374,8 @@ void __pagevec_lru_add_active(struct pagevec *pvec)
}
BUG_ON(PageLRU(page));
SetPageLRU(page);
if (TestSetPageActive(page))
BUG();
BUG_ON(PageActive(page));
SetPageActive(page);
add_page_to_active_list(zone, page);
}
if (zone)

5
mm/vmscan.c
View file

@ -1280,8 +1280,9 @@ refill_inactive_zone(struct zone *zone, struct scan_control *sc)
prefetchw_prev_lru_page(page, &l_inactive, flags);
BUG_ON(PageLRU(page));
SetPageLRU(page);
if (!TestClearPageActive(page))
BUG();
BUG_ON(!PageActive(page));
ClearPageActive(page);
list_move(&page->lru, &zone->inactive_list);
pgmoved++;
if (!pagevec_add(&pvec, page)) {