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authorNick Piggin <npiggin@suse.de>2006-03-22 03:08:00 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-22 10:53:57 -0500
commit674539115cc88473f623581e1d53c0e2ecef2179 (patch)
tree7a32501091d7370ff4387df68804f918a089c631 /include/linux/page-flags.h
parent4c84cacfa424264f7ad5287298d3ea4a3e935278 (diff)
[PATCH] mm: less atomic ops
In the page release paths, we can be sure that nobody will mess with our page->flags because the refcount has dropped to 0. So no need for atomic operations here. 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 'include/linux/page-flags.h')
-rw-r--r--include/linux/page-flags.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 5d1e7bd85107..da71d63df465 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -242,10 +242,12 @@ extern void __mod_page_state_offset(unsigned long offset, unsigned long delta);
242#define PageLRU(page) test_bit(PG_lru, &(page)->flags) 242#define PageLRU(page) test_bit(PG_lru, &(page)->flags)
243#define SetPageLRU(page) set_bit(PG_lru, &(page)->flags) 243#define SetPageLRU(page) set_bit(PG_lru, &(page)->flags)
244#define ClearPageLRU(page) clear_bit(PG_lru, &(page)->flags) 244#define ClearPageLRU(page) clear_bit(PG_lru, &(page)->flags)
245#define __ClearPageLRU(page) __clear_bit(PG_lru, &(page)->flags)
245 246
246#define PageActive(page) test_bit(PG_active, &(page)->flags) 247#define PageActive(page) test_bit(PG_active, &(page)->flags)
247#define SetPageActive(page) set_bit(PG_active, &(page)->flags) 248#define SetPageActive(page) set_bit(PG_active, &(page)->flags)
248#define ClearPageActive(page) clear_bit(PG_active, &(page)->flags) 249#define ClearPageActive(page) clear_bit(PG_active, &(page)->flags)
250#define __ClearPageActive(page) __clear_bit(PG_active, &(page)->flags)
249 251
250#define PageSlab(page) test_bit(PG_slab, &(page)->flags) 252#define PageSlab(page) test_bit(PG_slab, &(page)->flags)
251#define SetPageSlab(page) set_bit(PG_slab, &(page)->flags) 253#define SetPageSlab(page) set_bit(PG_slab, &(page)->flags)