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authorNick Piggin <npiggin@suse.de>2006-03-22 00:08:00 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-22 07:53:57 -0800
commit674539115cc88473f623581e1d53c0e2ecef2179 (patch)
tree7a32501091d7370ff4387df68804f918a089c631 /include
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')
-rw-r--r--include/linux/mm_inline.h2
-rw-r--r--include/linux/page-flags.h2
2 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index 8ac854f7f19..3b6723dfaff 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -32,7 +32,7 @@ del_page_from_lru(struct zone *zone, struct page *page)
{
list_del(&page->lru);
if (PageActive(page)) {
- ClearPageActive(page);
+ __ClearPageActive(page);
zone->nr_active--;
} else {
zone->nr_inactive--;
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 5d1e7bd8510..da71d63df46 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);
#define PageLRU(page) test_bit(PG_lru, &(page)->flags)
#define SetPageLRU(page) set_bit(PG_lru, &(page)->flags)
#define ClearPageLRU(page) clear_bit(PG_lru, &(page)->flags)
+#define __ClearPageLRU(page) __clear_bit(PG_lru, &(page)->flags)
#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 __ClearPageActive(page) __clear_bit(PG_active, &(page)->flags)
#define PageSlab(page) test_bit(PG_slab, &(page)->flags)
#define SetPageSlab(page) set_bit(PG_slab, &(page)->flags)