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>
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@ -1125,6 +1125,8 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
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NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,
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-pages);
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__ClearPageSlab(page);
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reset_page_mapcount(page);
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__free_pages(page, s->order);
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}
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@ -1154,8 +1156,6 @@ static void discard_slab(struct kmem_cache *s, struct page *page)
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struct kmem_cache_node *n = get_node(s, page_to_nid(page));
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atomic_long_dec(&n->nr_slabs);
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reset_page_mapcount(page);
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__ClearPageSlab(page);
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free_slab(s, page);
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}
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