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slub: Move map/flag clearing to __free_slab 

__free_slab does some diagnostics. The resetting of mapcount etc
in discard_slab() can interfere with debug processing. So move
the reset immediately before the page is freed.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
This commit is contained in:
Christoph Lameter 2008-04-14 18:52:18 +03:00 committed by Pekka Enberg
parent 50ef37b96c
commit 49bd5221ce
1 changed files with 2 additions and 2 deletions
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4
mm/slub.c
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@ -1125,6 +1125,8 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,
-pages);
__ClearPageSlab(page);
reset_page_mapcount(page);
__free_pages(page, s->order);
}
@ -1154,8 +1156,6 @@ static void discard_slab(struct kmem_cache *s, struct page *page)
struct kmem_cache_node *n = get_node(s, page_to_nid(page));
atomic_long_dec(&n->nr_slabs);
reset_page_mapcount(page);
__ClearPageSlab(page);
free_slab(s, page);
}