提交 f205b2fe 编写于 作者: N Nick Piggin 提交者: Linus Torvalds

[PATCH] mm: slab less atomics

Atomic operation removal from slab
Signed-off-by: NNick Piggin <npiggin@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 5e9dace8
......@@ -250,10 +250,8 @@ extern void __mod_page_state_offset(unsigned long offset, unsigned long delta);
#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)
#define ClearPageSlab(page) clear_bit(PG_slab, &(page)->flags)
#define TestClearPageSlab(page) test_and_clear_bit(PG_slab, &(page)->flags)
#define TestSetPageSlab(page) test_and_set_bit(PG_slab, &(page)->flags)
#define __SetPageSlab(page) __set_bit(PG_slab, &(page)->flags)
#define __ClearPageSlab(page) __clear_bit(PG_slab, &(page)->flags)
#ifdef CONFIG_HIGHMEM
#define PageHighMem(page) is_highmem(page_zone(page))
......
......@@ -1402,7 +1402,7 @@ static void *kmem_getpages(struct kmem_cache *cachep, gfp_t flags, int nodeid)
atomic_add(i, &slab_reclaim_pages);
add_page_state(nr_slab, i);
while (i--) {
SetPageSlab(page);
__SetPageSlab(page);
page++;
}
return addr;
......@@ -1418,8 +1418,8 @@ static void kmem_freepages(struct kmem_cache *cachep, void *addr)
const unsigned long nr_freed = i;
while (i--) {
if (!TestClearPageSlab(page))
BUG();
BUG_ON(!PageSlab(page));
__ClearPageSlab(page);
page++;
}
sub_page_state(nr_slab, nr_freed);
......
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