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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 | 674539115cc88473f623581e1d53c0e2ecef2179 (patch) | |
| tree | 7a32501091d7370ff4387df68804f918a089c631 /include | |
| parent | 4c84cacfa424264f7ad5287298d3ea4a3e935278 (diff) | |
| download | blackbird-op-linux-674539115cc88473f623581e1d53c0e2ecef2179.tar.gz blackbird-op-linux-674539115cc88473f623581e1d53c0e2ecef2179.zip | |
[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.h | 2 | ||||
| -rw-r--r-- | include/linux/page-flags.h | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h index 8ac854f7f190..3b6723dfaff3 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 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); #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) |
