slab: fix for_each_kmem_cache_node()
Fix a bug (discovered with kmemcheck) in for_each_kmem_cache_node(). The for loop reads the array "node" before verifying that the index is within the range. This results in kmemcheck warning. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Reviewed-by: Pekka Enberg <penberg@kernel.org> Acked-by: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -338,8 +338,8 @@ static inline struct kmem_cache_node *get_node(struct kmem_cache *s, int node)
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* a kmem_cache_node structure allocated (which is true for all online nodes)
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*/
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#define for_each_kmem_cache_node(__s, __node, __n) \
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for (__node = 0; __n = get_node(__s, __node), __node < nr_node_ids; __node++) \
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if (__n)
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for (__node = 0; __node < nr_node_ids; __node++) \
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if ((__n = get_node(__s, __node)))
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#endif
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