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| author | Nick Piggin <npiggin@suse.de> | 2006-03-22 00:08:00 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 07:53:57 -0800 |
| commit | 4c84cacfa424264f7ad5287298d3ea4a3e935278 (patch) | |
| tree | 8cefe97dfd0cdfbdebe5636ccc68b14ab3ae1207 | |
| parent | 8d438f96d2b8eade6cbcd8adfc22dae6f5cbd6c0 (diff) | |
| download | lwn-4c84cacfa424264f7ad5287298d3ea4a3e935278.tar.gz lwn-4c84cacfa424264f7ad5287298d3ea4a3e935278.zip | |
[PATCH] mm: PageActive no testset
PG_active 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>
| -rw-r--r-- | include/linux/page-flags.h | 2 | ||||
| -rw-r--r-- | mm/swap.c | 4 | ||||
| -rw-r--r-- | mm/vmscan.c | 5 |
3 files changed, 5 insertions, 6 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 58856c823f8b..5d1e7bd85107 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -246,8 +246,6 @@ extern void __mod_page_state_offset(unsigned long offset, unsigned long delta); #define PageActive(page) test_bit(PG_active, &(page)->flags) #define SetPageActive(page) set_bit(PG_active, &(page)->flags) #define ClearPageActive(page) clear_bit(PG_active, &(page)->flags) -#define TestClearPageActive(page) test_and_clear_bit(PG_active, &(page)->flags) -#define TestSetPageActive(page) test_and_set_bit(PG_active, &(page)->flags) #define PageSlab(page) test_bit(PG_slab, &(page)->flags) #define SetPageSlab(page) set_bit(PG_slab, &(page)->flags) diff --git a/mm/swap.c b/mm/swap.c index 985324ee9368..cf88226cf96d 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -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) diff --git a/mm/vmscan.c b/mm/vmscan.c index 40fb37828e8c..8e477b1a4838 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -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)) { |