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authorNick Piggin <npiggin@suse.de>2006-03-22 00:07:59 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-22 07:53:56 -0800
commit8d438f96d2b8eade6cbcd8adfc22dae6f5cbd6c0 (patch)
tree5248caf52ed9ba1dbb172d9e3bd3216c97ab3b84 /mm/swap.c
parent46453a6e194a8c55fe6cf3dc8e1c4f24e2abc013 (diff)
downloadop-kernel-dev-8d438f96d2b8eade6cbcd8adfc22dae6f5cbd6c0.zip
op-kernel-dev-8d438f96d2b8eade6cbcd8adfc22dae6f5cbd6c0.tar.gz
[PATCH] mm: PageLRU no testset
PG_lru is protected by zone->lru_lock. It does not need TestSet/TestClear operations. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/swap.c')
-rw-r--r--mm/swap.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/mm/swap.c b/mm/swap.c
index 3045a0f..985324e 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -214,8 +214,8 @@ void fastcall __page_cache_release(struct page *page)
struct zone *zone = page_zone(page);
spin_lock_irqsave(&zone->lru_lock, flags);
- if (!TestClearPageLRU(page))
- BUG();
+ BUG_ON(!PageLRU(page));
+ ClearPageLRU(page);
del_page_from_lru(zone, page);
spin_unlock_irqrestore(&zone->lru_lock, flags);
}
@@ -265,8 +265,8 @@ void release_pages(struct page **pages, int nr, int cold)
zone = pagezone;
spin_lock_irq(&zone->lru_lock);
}
- if (!TestClearPageLRU(page))
- BUG();
+ BUG_ON(!PageLRU(page));
+ ClearPageLRU(page);
del_page_from_lru(zone, page);
}
@@ -345,8 +345,8 @@ void __pagevec_lru_add(struct pagevec *pvec)
zone = pagezone;
spin_lock_irq(&zone->lru_lock);
}
- if (TestSetPageLRU(page))
- BUG();
+ BUG_ON(PageLRU(page));
+ SetPageLRU(page);
add_page_to_inactive_list(zone, page);
}
if (zone)
@@ -372,8 +372,8 @@ void __pagevec_lru_add_active(struct pagevec *pvec)
zone = pagezone;
spin_lock_irq(&zone->lru_lock);
}
- if (TestSetPageLRU(page))
- BUG();
+ BUG_ON(PageLRU(page));
+ SetPageLRU(page);
if (TestSetPageActive(page))
BUG();
add_page_to_active_list(zone, page);
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